From 24bb55371a5d8d81b23521ebdfcde68f0035697c Mon Sep 17 00:00:00 2001 From: Bent Bisballe Nyeng Date: Sun, 20 Sep 2015 11:36:22 +0200 Subject: Basic project based on DrumGizmo. --- plugingui/Makefile.am | 61 + plugingui/Makefile.am.plugingui | 50 + plugingui/Makefile.mingw32 | 67 + plugingui/application.cc | 66 + plugingui/application.h | 52 + plugingui/button.cc | 157 + plugingui/button.h | 80 + plugingui/checkbox.cc | 115 + plugingui/checkbox.h | 69 + plugingui/colour.cc | 63 + plugingui/colour.h | 51 + plugingui/combobox.cc | 231 + plugingui/combobox.h | 73 + plugingui/directory.cc | 443 ++ plugingui/directory.h | 93 + plugingui/eventhandler.cc | 194 + plugingui/eventhandler.h | 62 + plugingui/filebrowser.cc | 268 + plugingui/filebrowser.h | 75 + plugingui/font.cc | 131 + plugingui/font.h | 63 + plugingui/guievent.h | 141 + plugingui/image.cc | 119 + plugingui/image.h | 59 + plugingui/knob.cc | 188 + plugingui/knob.h | 80 + plugingui/label.cc | 57 + plugingui/label.h | 51 + plugingui/led.cc | 106 + plugingui/led.h | 56 + plugingui/lineedit.cc | 239 + plugingui/lineedit.h | 86 + plugingui/listbox.cc | 123 + plugingui/listbox.h | 68 + plugingui/listboxbasic.cc | 334 ++ plugingui/listboxbasic.h | 101 + plugingui/listboxthin.cc | 118 + plugingui/listboxthin.h | 67 + plugingui/lodepng/lodepng.cpp | 6260 ++++++++++++++++++++++++ plugingui/lodepng/lodepng.h | 1716 +++++++ plugingui/nativewindow.h | 57 + plugingui/nativewindow_pugl.cc | 212 + plugingui/nativewindow_pugl.h | 72 + plugingui/nativewindow_win32.cc | 400 ++ plugingui/nativewindow_win32.h | 71 + plugingui/nativewindow_x11.cc | 388 ++ plugingui/nativewindow_x11.h | 72 + plugingui/notifier.h | 149 + plugingui/painter.cc | 488 ++ plugingui/painter.h | 97 + plugingui/pixelbuffer.cc | 180 + plugingui/pixelbuffer.h | 91 + plugingui/pluginconfig.cc | 63 + plugingui/pluginconfig.h | 44 + plugingui/plugingui.cc | 539 ++ plugingui/plugingui.h | 107 + plugingui/progressbar.cc | 108 + plugingui/progressbar.h | 71 + plugingui/rcgen.cc | 71 + plugingui/resource.cc | 119 + plugingui/resource.h | 53 + plugingui/resource_data.cc | 3583 ++++++++++++++ plugingui/resource_data.h | 38 + plugingui/resources/bg.png | Bin 0 -> 1123 bytes plugingui/resources/createrc.sh | 2 + plugingui/resources/font.png | Bin 0 -> 4945 bytes plugingui/resources/fontemboss.png | Bin 0 -> 10710 bytes plugingui/resources/knob.png | Bin 0 -> 3597 bytes plugingui/resources/logo.png | Bin 0 -> 14190 bytes plugingui/resources/png_error | Bin 0 -> 2608 bytes plugingui/resources/progress_back_c.png | Bin 0 -> 188 bytes plugingui/resources/progress_back_l.png | Bin 0 -> 321 bytes plugingui/resources/progress_back_r.png | Bin 0 -> 311 bytes plugingui/resources/progress_front_blue_c.png | Bin 0 -> 219 bytes plugingui/resources/progress_front_blue_l.png | Bin 0 -> 240 bytes plugingui/resources/progress_front_blue_r.png | Bin 0 -> 245 bytes plugingui/resources/progress_front_green_c.png | Bin 0 -> 215 bytes plugingui/resources/progress_front_green_l.png | Bin 0 -> 241 bytes plugingui/resources/progress_front_green_r.png | Bin 0 -> 241 bytes plugingui/resources/progress_front_red_c.png | Bin 0 -> 209 bytes plugingui/resources/progress_front_red_l.png | Bin 0 -> 229 bytes plugingui/resources/progress_front_red_r.png | Bin 0 -> 229 bytes plugingui/resources/pushbutton_b.png | Bin 0 -> 205 bytes plugingui/resources/pushbutton_bl.png | Bin 0 -> 396 bytes plugingui/resources/pushbutton_br.png | Bin 0 -> 388 bytes plugingui/resources/pushbutton_c.png | Bin 0 -> 188 bytes plugingui/resources/pushbutton_l.png | Bin 0 -> 258 bytes plugingui/resources/pushbutton_r.png | Bin 0 -> 256 bytes plugingui/resources/pushbutton_t.png | Bin 0 -> 192 bytes plugingui/resources/pushbutton_tl.png | Bin 0 -> 307 bytes plugingui/resources/pushbutton_tr.png | Bin 0 -> 326 bytes plugingui/resources/pushbuttondown_b.png | Bin 0 -> 197 bytes plugingui/resources/pushbuttondown_bl.png | Bin 0 -> 340 bytes plugingui/resources/pushbuttondown_br.png | Bin 0 -> 338 bytes plugingui/resources/pushbuttondown_c.png | Bin 0 -> 188 bytes plugingui/resources/pushbuttondown_l.png | Bin 0 -> 237 bytes plugingui/resources/pushbuttondown_r.png | Bin 0 -> 234 bytes plugingui/resources/pushbuttondown_t.png | Bin 0 -> 190 bytes plugingui/resources/pushbuttondown_tl.png | Bin 0 -> 312 bytes plugingui/resources/pushbuttondown_tr.png | Bin 0 -> 336 bytes plugingui/resources/switch_back_off.png | Bin 0 -> 2263 bytes plugingui/resources/switch_back_on.png | Bin 0 -> 2504 bytes plugingui/resources/switch_front.png | Bin 0 -> 1776 bytes plugingui/resources/thinlistbox_b.png | Bin 0 -> 165 bytes plugingui/resources/thinlistbox_bl.png | Bin 0 -> 165 bytes plugingui/resources/thinlistbox_br.png | Bin 0 -> 165 bytes plugingui/resources/thinlistbox_c.png | Bin 0 -> 165 bytes plugingui/resources/thinlistbox_l.png | Bin 0 -> 165 bytes plugingui/resources/thinlistbox_r.png | Bin 0 -> 165 bytes plugingui/resources/thinlistbox_t.png | Bin 0 -> 165 bytes plugingui/resources/thinlistbox_t_blue.png | Bin 0 -> 165 bytes plugingui/resources/thinlistbox_tl.png | Bin 0 -> 165 bytes plugingui/resources/thinlistbox_tr.png | Bin 0 -> 165 bytes plugingui/resources/vertline.png | Bin 0 -> 170 bytes plugingui/resources/widget_b.png | Bin 0 -> 192 bytes plugingui/resources/widget_bl.png | Bin 0 -> 297 bytes plugingui/resources/widget_br.png | Bin 0 -> 285 bytes plugingui/resources/widget_c.png | Bin 0 -> 165 bytes plugingui/resources/widget_l.png | Bin 0 -> 433 bytes plugingui/resources/widget_r.png | Bin 0 -> 421 bytes plugingui/resources/widget_t.png | Bin 0 -> 187 bytes plugingui/resources/widget_tl.png | Bin 0 -> 246 bytes plugingui/resources/widget_tr.png | Bin 0 -> 253 bytes plugingui/scrollbar.cc | 185 + plugingui/scrollbar.h | 75 + plugingui/signal.cc | 478 ++ plugingui/slider.cc | 158 + plugingui/slider.h | 70 + plugingui/test.cc | 172 + plugingui/tester.cc | 50 + plugingui/verticalline.cc | 41 + plugingui/verticalline.h | 48 + plugingui/widget.cc | 189 + plugingui/widget.h | 97 + plugingui/window.cc | 245 + plugingui/window.h | 105 + 136 files changed, 21421 insertions(+) create mode 100644 plugingui/Makefile.am create mode 100644 plugingui/Makefile.am.plugingui create mode 100644 plugingui/Makefile.mingw32 create mode 100644 plugingui/application.cc create mode 100644 plugingui/application.h create mode 100644 plugingui/button.cc create mode 100644 plugingui/button.h create mode 100644 plugingui/checkbox.cc create mode 100644 plugingui/checkbox.h create mode 100644 plugingui/colour.cc create mode 100644 plugingui/colour.h create mode 100644 plugingui/combobox.cc create mode 100644 plugingui/combobox.h create mode 100644 plugingui/directory.cc create mode 100644 plugingui/directory.h create mode 100644 plugingui/eventhandler.cc create mode 100644 plugingui/eventhandler.h create mode 100644 plugingui/filebrowser.cc create mode 100644 plugingui/filebrowser.h create mode 100644 plugingui/font.cc create mode 100644 plugingui/font.h create mode 100644 plugingui/guievent.h create mode 100644 plugingui/image.cc create mode 100644 plugingui/image.h create mode 100644 plugingui/knob.cc create mode 100644 plugingui/knob.h create mode 100644 plugingui/label.cc create mode 100644 plugingui/label.h create mode 100644 plugingui/led.cc create mode 100644 plugingui/led.h create mode 100644 plugingui/lineedit.cc create mode 100644 plugingui/lineedit.h create mode 100644 plugingui/listbox.cc create mode 100644 plugingui/listbox.h create mode 100644 plugingui/listboxbasic.cc create mode 100644 plugingui/listboxbasic.h create mode 100644 plugingui/listboxthin.cc create mode 100644 plugingui/listboxthin.h create mode 100644 plugingui/lodepng/lodepng.cpp create mode 100644 plugingui/lodepng/lodepng.h create mode 100644 plugingui/nativewindow.h create mode 100644 plugingui/nativewindow_pugl.cc create mode 100644 plugingui/nativewindow_pugl.h create mode 100644 plugingui/nativewindow_win32.cc create mode 100644 plugingui/nativewindow_win32.h create mode 100644 plugingui/nativewindow_x11.cc create mode 100644 plugingui/nativewindow_x11.h create mode 100644 plugingui/notifier.h create mode 100644 plugingui/painter.cc create mode 100644 plugingui/painter.h create mode 100644 plugingui/pixelbuffer.cc create mode 100644 plugingui/pixelbuffer.h create mode 100644 plugingui/pluginconfig.cc create mode 100644 plugingui/pluginconfig.h create mode 100644 plugingui/plugingui.cc create mode 100644 plugingui/plugingui.h create mode 100644 plugingui/progressbar.cc create mode 100644 plugingui/progressbar.h create mode 100644 plugingui/rcgen.cc create mode 100644 plugingui/resource.cc create mode 100644 plugingui/resource.h create mode 100644 plugingui/resource_data.cc create mode 100644 plugingui/resource_data.h create mode 100644 plugingui/resources/bg.png create mode 100755 plugingui/resources/createrc.sh create mode 100644 plugingui/resources/font.png create mode 100644 plugingui/resources/fontemboss.png create mode 100644 plugingui/resources/knob.png create mode 100644 plugingui/resources/logo.png create mode 100644 plugingui/resources/png_error create mode 100644 plugingui/resources/progress_back_c.png create mode 100644 plugingui/resources/progress_back_l.png create mode 100644 plugingui/resources/progress_back_r.png create mode 100644 plugingui/resources/progress_front_blue_c.png create mode 100644 plugingui/resources/progress_front_blue_l.png create mode 100644 plugingui/resources/progress_front_blue_r.png create mode 100644 plugingui/resources/progress_front_green_c.png create mode 100644 plugingui/resources/progress_front_green_l.png create mode 100644 plugingui/resources/progress_front_green_r.png create mode 100644 plugingui/resources/progress_front_red_c.png create mode 100644 plugingui/resources/progress_front_red_l.png create mode 100644 plugingui/resources/progress_front_red_r.png create mode 100644 plugingui/resources/pushbutton_b.png create mode 100644 plugingui/resources/pushbutton_bl.png create mode 100644 plugingui/resources/pushbutton_br.png create mode 100644 plugingui/resources/pushbutton_c.png create mode 100644 plugingui/resources/pushbutton_l.png create mode 100644 plugingui/resources/pushbutton_r.png create mode 100644 plugingui/resources/pushbutton_t.png create mode 100644 plugingui/resources/pushbutton_tl.png create mode 100644 plugingui/resources/pushbutton_tr.png create mode 100644 plugingui/resources/pushbuttondown_b.png create mode 100644 plugingui/resources/pushbuttondown_bl.png create mode 100644 plugingui/resources/pushbuttondown_br.png create mode 100644 plugingui/resources/pushbuttondown_c.png create mode 100644 plugingui/resources/pushbuttondown_l.png create mode 100644 plugingui/resources/pushbuttondown_r.png create mode 100644 plugingui/resources/pushbuttondown_t.png create mode 100644 plugingui/resources/pushbuttondown_tl.png create mode 100644 plugingui/resources/pushbuttondown_tr.png create mode 100644 plugingui/resources/switch_back_off.png create mode 100644 plugingui/resources/switch_back_on.png create mode 100644 plugingui/resources/switch_front.png create mode 100644 plugingui/resources/thinlistbox_b.png create mode 100644 plugingui/resources/thinlistbox_bl.png create mode 100644 plugingui/resources/thinlistbox_br.png create mode 100644 plugingui/resources/thinlistbox_c.png create mode 100644 plugingui/resources/thinlistbox_l.png create mode 100644 plugingui/resources/thinlistbox_r.png create mode 100644 plugingui/resources/thinlistbox_t.png create mode 100644 plugingui/resources/thinlistbox_t_blue.png create mode 100644 plugingui/resources/thinlistbox_tl.png create mode 100644 plugingui/resources/thinlistbox_tr.png create mode 100644 plugingui/resources/vertline.png create mode 100644 plugingui/resources/widget_b.png create mode 100644 plugingui/resources/widget_bl.png create mode 100644 plugingui/resources/widget_br.png create mode 100644 plugingui/resources/widget_c.png create mode 100644 plugingui/resources/widget_l.png create mode 100644 plugingui/resources/widget_r.png create mode 100644 plugingui/resources/widget_t.png create mode 100644 plugingui/resources/widget_tl.png create mode 100644 plugingui/resources/widget_tr.png create mode 100644 plugingui/scrollbar.cc create mode 100644 plugingui/scrollbar.h create mode 100644 plugingui/signal.cc create mode 100644 plugingui/slider.cc create mode 100644 plugingui/slider.h create mode 100644 plugingui/test.cc create mode 100644 plugingui/tester.cc create mode 100644 plugingui/verticalline.cc create mode 100644 plugingui/verticalline.h create mode 100644 plugingui/widget.cc create mode 100644 plugingui/widget.h create mode 100644 plugingui/window.cc create mode 100644 plugingui/window.h (limited to 'plugingui') diff --git a/plugingui/Makefile.am b/plugingui/Makefile.am new file mode 100644 index 0000000..00b0881 --- /dev/null +++ b/plugingui/Makefile.am @@ -0,0 +1,61 @@ +noinst_PROGRAMS = plugingui rcgen + +include Makefile.am.plugingui +#include $(top_srcdir)/src/Makefile.am.drumgizmo + +plugingui_LDADD = $(SNDFILE_LIBS) $(PTHREAD_LIBS) $(EXPAT_LIBS) \ + -ldl $(PLUGIN_GUI_LIBS) + +plugingui_CXXFLAGS = $(SNDFILE_CXXFLAGS) $(PTHREAD_CFLAGS) $(EXPAT_CFLAGS) \ + -I$(top_srcdir)/include $(PLUGIN_GUI_CFLAGS) -I$(top_srcdir)/src \ + -DSTANDALONE -DUSE_THREAD + +plugingui_CFLAGS = $(plugingui_CXXFLAGS) + +plugingui_SOURCES = \ + $(PLUGIN_GUI_SOURCES) \ + $(top_srcdir)/src/configfile.cc \ + $(top_srcdir)/src/thread.cc \ + $(top_srcdir)/src/semaphore.cc \ + $(top_srcdir)/src/mutex.cc \ + $(top_srcdir)/src/messagehandler.cc \ + $(top_srcdir)/src/messagereceiver.cc + +rcgen_SOURCES = rcgen.cc + +EXTRA_DIST = \ + button.h \ + checkbox.h \ + colour.h \ + combobox.h \ + directory.h \ + eventhandler.h \ + filebrowser.h \ + font.h \ + guievent.h \ + image.h \ + knob.h \ + label.h \ + led.h \ + lineedit.h \ + listbox.h \ + listboxbasic.h \ + listboxthin.h \ + nativewindow.h \ + nativewindow.h \ + nativewindow_win32.h \ + nativewindow_x11.h \ + painter.h \ + pixelbuffer.h \ + pluginconfig.h \ + plugingui.h \ + progressbar.h \ + resource.h \ + resource_data.h \ + scrollbar.h \ + slider.h \ + verticalline.h \ + widget.h \ + window.h \ + lodepng/lodepng.h + diff --git a/plugingui/Makefile.am.plugingui b/plugingui/Makefile.am.plugingui new file mode 100644 index 0000000..cb7a79f --- /dev/null +++ b/plugingui/Makefile.am.plugingui @@ -0,0 +1,50 @@ + +puglsources = + +PLUGIN_GUI_SOURCES = \ + $(top_srcdir)/hugin/hugin.c \ + $(top_srcdir)/hugin/hugin_syslog.c \ + $(puglsources) \ + $(top_srcdir)/plugingui/nativewindow_x11.cc \ + $(top_srcdir)/plugingui/nativewindow_win32.cc \ + $(top_srcdir)/plugingui/application.cc \ + $(top_srcdir)/plugingui/plugingui.cc \ + $(top_srcdir)/plugingui/label.cc \ + $(top_srcdir)/plugingui/eventhandler.cc \ + $(top_srcdir)/plugingui/font.cc \ + $(top_srcdir)/plugingui/window.cc \ + $(top_srcdir)/plugingui/widget.cc \ + $(top_srcdir)/plugingui/colour.cc \ + $(top_srcdir)/plugingui/painter.cc \ + $(top_srcdir)/plugingui/button.cc \ + $(top_srcdir)/plugingui/pixelbuffer.cc \ + $(top_srcdir)/plugingui/lineedit.cc \ + $(top_srcdir)/plugingui/led.cc \ + $(top_srcdir)/plugingui/checkbox.cc \ + $(top_srcdir)/plugingui/slider.cc \ + $(top_srcdir)/plugingui/scrollbar.cc \ + $(top_srcdir)/plugingui/listbox.cc \ + $(top_srcdir)/plugingui/listboxthin.cc \ + $(top_srcdir)/plugingui/listboxbasic.cc \ + $(top_srcdir)/plugingui/knob.cc \ + $(top_srcdir)/plugingui/filebrowser.cc \ + $(top_srcdir)/plugingui/directory.cc \ + $(top_srcdir)/plugingui/pluginconfig.cc \ + $(top_srcdir)/plugingui/image.cc \ + $(top_srcdir)/plugingui/combobox.cc \ + $(top_srcdir)/plugingui/progressbar.cc \ + $(top_srcdir)/plugingui/verticalline.cc \ + $(top_srcdir)/plugingui/resource.cc \ + $(top_srcdir)/plugingui/resource_data.cc \ + $(top_srcdir)/plugingui/lodepng/lodepng.cpp + +PLUGIN_GUI_LIBS = $(GUI_LIBS) $(PTHREAD_LIBS) $(ZLIB_LIBS) + +PLUGIN_GUI_CFLAGS = $(GUI_CFLAGS) $(ZLIB_CFLAGS) -I$(top_srcdir)/hugin \ + -DWITH_HUG_SYSLOG -DWITH_HUG_MUTEX $(PTHREAD_CFLAGS) \ + -I$(top_srcdir)/pugl/pugl \ + -DLODEPNG_NO_COMPILE_ENCODER \ + -DLODEPNG_NO_COMPILE_DISK \ + -DLODEPNG_NO_COMPILE_ANCILLARY_CHUNKS \ + -DLODEPNG_NO_COMPILE_ERROR_TEXT \ + -DLODEPNG_NO_COMPILE_CPP diff --git a/plugingui/Makefile.mingw32 b/plugingui/Makefile.mingw32 new file mode 100644 index 0000000..b16535b --- /dev/null +++ b/plugingui/Makefile.mingw32 @@ -0,0 +1,67 @@ +top_srcdir=.. +include Makefile.am.plugingui + +CFLAGS=-DSTANDALONE -DWIN32 -DUSE_THREAD ${PLUGIN_GUI_CFLAGS} \ + -I$(top_srcdir)/src -I/local/include +LDFLAGS=-mconsole -lgdi32 -lsetupapi -lws2_32 -L/local/lib -lz -pthread + +C_SOURCES = \ + $(top_srcdir)/hugin/hugin.c \ + $(top_srcdir)/hugin/hugin_syslog.c + +CXX_SOURCES = \ + $(top_srcdir)/plugingui/nativewindow_x11.cc \ + $(top_srcdir)/plugingui/nativewindow_win32.cc \ + $(top_srcdir)/plugingui/plugingui.cc \ + $(top_srcdir)/plugingui/pluginconfig.cc \ + $(top_srcdir)/plugingui/label.cc \ + $(top_srcdir)/plugingui/eventhandler.cc \ + $(top_srcdir)/plugingui/font.cc \ + $(top_srcdir)/plugingui/window.cc \ + $(top_srcdir)/plugingui/widget.cc \ + $(top_srcdir)/plugingui/colour.cc \ + $(top_srcdir)/plugingui/painter.cc \ + $(top_srcdir)/plugingui/button.cc \ + $(top_srcdir)/plugingui/pixelbuffer.cc \ + $(top_srcdir)/plugingui/lineedit.cc \ + $(top_srcdir)/plugingui/led.cc \ + $(top_srcdir)/plugingui/checkbox.cc \ + $(top_srcdir)/plugingui/slider.cc \ + $(top_srcdir)/plugingui/listbox.cc \ + $(top_srcdir)/plugingui/verticalline.cc \ + $(top_srcdir)/plugingui/listboxthin.cc \ + $(top_srcdir)/plugingui/listboxbasic.cc \ + $(top_srcdir)/plugingui/filebrowser.cc \ + $(top_srcdir)/plugingui/directory.cc \ + $(top_srcdir)/plugingui/knob.cc \ + $(top_srcdir)/plugingui/combobox.cc \ + $(top_srcdir)/plugingui/image.cc \ + $(top_srcdir)/plugingui/scrollbar.cc \ + $(top_srcdir)/plugingui/progressbar.cc \ + $(top_srcdir)/plugingui/resource.cc \ + $(top_srcdir)/plugingui/resource_data.cc \ + $(top_srcdir)/plugingui/lodepng/lodepng.cpp \ + $(top_srcdir)/src/thread.cc \ + $(top_srcdir)/src/semaphore.cc \ + $(top_srcdir)/src/mutex.cc \ + $(top_srcdir)/src/messagehandler.cc \ + $(top_srcdir)/src/messagereceiver.cc + +OBJECTS=$(CXX_SOURCES:.cc=.o) $(C_SOURCES:.c=.o) +#OBJECTS=$(PLUGIN_GUI_SOURCES:.cc=.o) + +#$(PLUGIN_GUI_SOURCES:.c=.o) + +all: $(CXX_SOURCES) $(C_SOURCES) plugingui.exe + +plugingui.exe: $(OBJECTS) + g++ -static -static-libgcc $(OBJECTS) $(LDFLAGS) $(CFLAGS) -o $@ + +%.o: %.cc + g++ -g -static -static-libgcc -O2 -c $(CFLAGS) $< -o $@ + +%.o: %.c + gcc -g -static -static-libgcc -O2 -c $(CFLAGS) $< -o $@ + +clean: + rm -rf $(OBJECTS) plugingui.exe diff --git a/plugingui/application.cc b/plugingui/application.cc new file mode 100644 index 0000000..8ff8246 --- /dev/null +++ b/plugingui/application.cc @@ -0,0 +1,66 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * application.cc + * + * Thu Sep 3 18:22:15 CEST 2015 + * Copyright 2015 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "application.h" + +#ifdef WIN32 +#define WIN32_LEAN_AND_MEAN +#include +#else +#include +#endif + +namespace GUI { + +Application::Application() + : running(true) +{ +} + +void Application::run() +{ + Thread::run(); +} + +void Application::thread_main() +{ + onInit(); + + while(running) { +#ifdef WIN32 + SleepEx(50, FALSE); +#else + usleep(50000); +#endif/*WIN32*/ + + // window->eventHandler()->processEvents(); + //handleMessages(); + } + + onTerminate(); +} + +} // GUI:: diff --git a/plugingui/application.h b/plugingui/application.h new file mode 100644 index 0000000..3fd0fbb --- /dev/null +++ b/plugingui/application.h @@ -0,0 +1,52 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * application.h + * + * Thu Sep 3 18:22:15 CEST 2015 + * Copyright 2015 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#pragma once + +#include + +namespace GUI { + +class Application : public Thread { +public: + Application(); + + void run(); + +protected: + //! This is called before the message loop is started. + virtual void onInit() {} + + //! This is called after message loop has finished. + virtual void onTerminate() {} + +private: + void thread_main(); + + volatile bool running; +}; + +} // GUI:: diff --git a/plugingui/button.cc b/plugingui/button.cc new file mode 100644 index 0000000..c316ef3 --- /dev/null +++ b/plugingui/button.cc @@ -0,0 +1,157 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * button.cc + * + * Sun Oct 9 13:01:56 CEST 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "button.h" + +#include "painter.h" + +#include +#include + +GUI::Button::Button(Widget *parent) + : GUI::Widget(parent) +{ + box_up.topLeft = new Image(":pushbutton_tl.png"); + box_up.top = new Image(":pushbutton_t.png"); + box_up.topRight = new Image(":pushbutton_tr.png"); + box_up.left = new Image(":pushbutton_l.png"); + box_up.right = new Image(":pushbutton_r.png"); + box_up.bottomLeft = new Image(":pushbutton_bl.png"); + box_up.bottom = new Image(":pushbutton_b.png"); + box_up.bottomRight = new Image(":pushbutton_br.png"); + box_up.center = new Image(":pushbutton_c.png"); + + box_down.topLeft = new Image(":pushbuttondown_tl.png"); + box_down.top = new Image(":pushbuttondown_t.png"); + box_down.topRight = new Image(":pushbuttondown_tr.png"); + box_down.left = new Image(":pushbuttondown_l.png"); + box_down.right = new Image(":pushbuttondown_r.png"); + box_down.bottomLeft = new Image(":pushbuttondown_bl.png"); + box_down.bottom = new Image(":pushbuttondown_b.png"); + box_down.bottomRight = new Image(":pushbuttondown_br.png"); + box_down.center = new Image(":pushbuttondown_c.png"); + + draw_state = up; + button_state = up; + + handler = NULL; + ptr = NULL; +} + +void GUI::Button::registerClickHandler(void (*handler)(void *), void *ptr) +{ + this->handler = handler; + this->ptr = ptr; +} + +void GUI::Button::buttonEvent(ButtonEvent *e) +{ + if(e->direction == 1) { + draw_state = down; + button_state = down; + in_button = true; + repaintEvent(NULL); + } + if(e->direction == -1) { + draw_state = up; + button_state = up; + repaintEvent(NULL); + if(in_button) { + clicked(); + if(handler) handler(ptr); + } + } +} + +void GUI::Button::repaintEvent(GUI::RepaintEvent *e) +{ + Painter p(this); + + p.clear(); + + int w = width(); + int h = height(); + if(w == 0 || h == 0) return; + + switch(draw_state) { + case up: + p.drawBox(0, 0, &box_up, w, h); + break; + case down: + p.drawBox(0, 0, &box_down, w, h); + break; + } + + Font font(":fontemboss.png"); + p.setColour(Colour(0.1)); + p.drawText(width()/2-(text.length()*3)+(draw_state==up?0:1), + height()/2+5+1+(draw_state==up?0:1), font, text, true); +} + +void GUI::Button::setText(std::string text) +{ + this->text = text; + repaintEvent(NULL); +} + +void GUI::Button::mouseLeaveEvent() +{ + in_button = false; + if(button_state == down) { + draw_state = up; + repaintEvent(NULL); + } +} + +void GUI::Button::mouseEnterEvent() +{ + in_button = true; + if(button_state == down) { + draw_state = down; + repaintEvent(NULL); + } +} + +void GUI::Button::mouseMoveEvent(MouseMoveEvent *e) +{ +} + +#ifdef TEST_BUTTON +//Additional dependency files +//deps: +//Required cflags (autoconf vars may be used) +//cflags: +//Required link options (autoconf vars may be used) +//libs: +#include "test.h" + +TEST_BEGIN; + +// TODO: Put some testcode here (see test.h for usable macros). + +TEST_END; + +#endif/*TEST_BUTTON*/ diff --git a/plugingui/button.h b/plugingui/button.h new file mode 100644 index 0000000..682dfa2 --- /dev/null +++ b/plugingui/button.h @@ -0,0 +1,80 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * button.h + * + * Sun Oct 9 13:01:56 CEST 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#ifndef __DRUMGIZMO_BUTTON_H__ +#define __DRUMGIZMO_BUTTON_H__ + +#include + +#include "widget.h" +#include "painter.h" + +namespace GUI { + +class Button : public Widget { +public: + Button(Widget *parent); + + bool isFocusable() { return true; } + bool catchMouse() { return true; } + + void setText(std::string text); + + void registerClickHandler(void (*handler)(void *), void *ptr); + + //protected: + virtual void clicked() {} + + virtual void repaintEvent(RepaintEvent *e); + virtual void buttonEvent(ButtonEvent *e); + + virtual void mouseLeaveEvent(); + virtual void mouseEnterEvent(); + virtual void mouseMoveEvent(MouseMoveEvent *e); + +private: + bool in_button; + + Painter::Box box_up; + Painter::Box box_down; + + typedef enum { + up, + down + } state_t; + + std::string text; + + state_t draw_state; + state_t button_state; + + void (*handler)(void *); + void *ptr; +}; + +}; + +#endif/*__DRUMGIZMO_BUTTON_H__*/ diff --git a/plugingui/checkbox.cc b/plugingui/checkbox.cc new file mode 100644 index 0000000..ec0456f --- /dev/null +++ b/plugingui/checkbox.cc @@ -0,0 +1,115 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * checkbox.cc + * + * Sat Nov 26 15:07:44 CET 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "checkbox.h" + +#include "painter.h" + +#include + +namespace GUI { + +CheckBox::CheckBox(Widget *parent) + : Widget(parent) + , bg_on(":switch_back_on.png") + , bg_off(":switch_back_off.png") + , knob(":switch_front.png") + , state(false) + , middle(false) +{ +} + +void CheckBox::buttonEvent(ButtonEvent *e) +{ + if(e->direction == -1 || e->doubleclick) { + middle = false; + internalSetChecked(!state); + } else { + middle = true; + } + + repaintEvent(NULL); +} + +void CheckBox::setText(std::string text) +{ + _text = text; + repaintEvent(NULL); +} + +void CheckBox::keyEvent(KeyEvent *e) +{ + if(e->keycode == KeyEvent::KEY_CHARACTER && e->text == " ") { + if(e->direction == -1) { + middle = false; + internalSetChecked(!state); + } else { + middle = true; + } + + repaintEvent(NULL); + } +} + +void CheckBox::repaintEvent(RepaintEvent *e) +{ + Painter p(this); + + p.clear(); + + if(state) { + p.drawImage(0, (knob.height() - bg_on.height()) / 2, &bg_on); + if(middle) p.drawImage((bg_on.width() - knob.width()) / 2 + 1, 0, &knob); + else p.drawImage(bg_on.width() - 40 + 2, 0, &knob); + } else { + p.drawImage(0, (knob.height() - bg_off.height()) / 2, &bg_off); + if(middle) p.drawImage((bg_on.width() - knob.width()) / 2 + 1, 0, &knob); + else p.drawImage(0, 0, &knob); + } +} + +bool CheckBox::checked() +{ + return state; +} + +void CheckBox::setChecked(bool c) +{ + internalSetChecked(c); +} + +void CheckBox::internalSetChecked(bool checked) +{ + if(checked == state) { + return; + } + + state = checked; + stateChangedNotifier.notify(state); + repaintEvent(NULL); +} + +} // GUI:: diff --git a/plugingui/checkbox.h b/plugingui/checkbox.h new file mode 100644 index 0000000..8dd3821 --- /dev/null +++ b/plugingui/checkbox.h @@ -0,0 +1,69 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * checkbox.h + * + * Sat Nov 26 15:07:44 CET 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#pragma once + +#include "widget.h" +#include "image.h" +#include "notifier.h" + +namespace GUI { + +class CheckBox : public Widget { +public: + CheckBox(Widget *parent); + + void setText(std::string text); + + bool isFocusable() override { return true; } + + bool checked(); + void setChecked(bool checked); + + Notifier stateChangedNotifier; + +protected: + virtual void clicked() {} + + // From Widget: + virtual void repaintEvent(RepaintEvent *e) override; + virtual void buttonEvent(ButtonEvent *e) override; + virtual void keyEvent(KeyEvent *e) override; + +private: + void internalSetChecked(bool checked); + + Image bg_on; + Image bg_off; + Image knob; + + bool state; + bool middle; + + std::string _text; +}; + +} // GUI:: diff --git a/plugingui/colour.cc b/plugingui/colour.cc new file mode 100644 index 0000000..943011b --- /dev/null +++ b/plugingui/colour.cc @@ -0,0 +1,63 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * colour.cc + * + * Fri Oct 14 09:38:28 CEST 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "colour.h" + +GUI::Colour::Colour() +{ + red = blue = green = alpha = 1.0; +} + +GUI::Colour::Colour(float grey, float a) +{ + red = green = blue = grey; + alpha = a; +} + +GUI::Colour::Colour(float r, float g, float b, float a) +{ + red = r; + green = g; + blue = b; + alpha = a; +} + +#ifdef TEST_COLOUR +//Additional dependency files +//deps: +//Required cflags (autoconf vars may be used) +//cflags: +//Required link options (autoconf vars may be used) +//libs: +#include "test.h" + +TEST_BEGIN; + +// TODO: Put some testcode here (see test.h for usable macros). + +TEST_END; + +#endif/*TEST_COLOUR*/ diff --git a/plugingui/colour.h b/plugingui/colour.h new file mode 100644 index 0000000..92ec99e --- /dev/null +++ b/plugingui/colour.h @@ -0,0 +1,51 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * colour.h + * + * Fri Oct 14 09:38:28 CEST 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#ifndef __DRUMGIZMO_COLOUR_H__ +#define __DRUMGIZMO_COLOUR_H__ + +namespace GUI { + +class Colour { +public: + Colour(); + + Colour(float grey, float alpha = 1.0); + + Colour(float red, + float green, + float blue, + float alpha = 1.0); + + float red; + float green; + float blue; + float alpha; +}; + +}; + +#endif/*__DRUMGIZMO_COLOUR_H__*/ diff --git a/plugingui/combobox.cc b/plugingui/combobox.cc new file mode 100644 index 0000000..4637282 --- /dev/null +++ b/plugingui/combobox.cc @@ -0,0 +1,231 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * combobox.cc + * + * Sun Mar 10 19:04:50 CET 2013 + * Copyright 2013 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "combobox.h" + +#include "painter.h" +#include "font.h" + +#include + +#define BORDER 10 + +void listboxSelectHandler(void *ptr) +{ + GUI::ComboBox *c = (GUI::ComboBox*)ptr; + GUI::ButtonEvent e; + e.direction = 1; + c->buttonEvent(&e); +} + +GUI::ComboBox::ComboBox(GUI::Widget *parent) + : GUI::Widget(parent) +{ + handler = NULL; + ptr = NULL; + + box.topLeft = new Image(":widget_tl.png"); + box.top = new Image(":widget_t.png"); + box.topRight = new Image(":widget_tr.png"); + box.left = new Image(":widget_l.png"); + box.right = new Image(":widget_r.png"); + box.bottomLeft = new Image(":widget_bl.png"); + box.bottom = new Image(":widget_b.png"); + box.bottomRight = new Image(":widget_br.png"); + box.center = new Image(":widget_c.png"); + + listbox = new GUI::ListBoxThin(parent); + listbox->registerSelectHandler(listboxSelectHandler, this); + listbox->registerClickHandler(listboxSelectHandler, this); + listbox->hide(); +} + +GUI::ComboBox::~ComboBox() +{ +} + +void GUI::ComboBox::addItem(std::string name, std::string value) +{ + listbox->addItem(name, value); +} + +void GUI::ComboBox::clear() +{ + listbox->clear(); + repaintEvent(NULL); +} + +bool GUI::ComboBox::selectItem(int index) +{ + listbox->selectItem(index); + repaintEvent(NULL); + return true; +} + +std::string GUI::ComboBox::selectedName() +{ + return listbox->selectedName(); +} + +std::string GUI::ComboBox::selectedValue() +{ + return listbox->selectedValue(); +} + +void GUI::ComboBox::registerValueChangedHandler(void (*handler)(void *), + void *ptr) +{ + this->handler = handler; + this->ptr = ptr; +} + +static void drawArrow(GUI::Painter &p, int x, int y, int w, int h) +{ + p.drawLine(x, y, x+(w/2), y+h); + p.drawLine(x+(w/2), y+h, x+w, y); + + y++; + p.drawLine(x, y, x+(w/2), y+h); + p.drawLine(x+(w/2), y+h, x+w, y); +} + +void GUI::ComboBox::repaintEvent(GUI::RepaintEvent *e) +{ + Painter p(this); + + p.clear(); + + std::string _text = selectedName(); + + int w = width(); + int h = height(); + if(w == 0 || h == 0) return; + p.drawBox(0, 0, &box, w, h); + + p.setColour(GUI::Colour(183.0/255.0, 219.0/255.0 , 255.0/255.0, 1)); + p.drawText(BORDER - 4 + 3, height()/2+5 + 1 + 1, font, _text); + + // p.setColour(Colour(1, 1, 1)); + // p.drawText(BORDER - 4, (height()+font.textHeight()) / 2 + 1, font, _text); + + //int n = height() / 2; + + // p.drawLine(width() - n - 6, 1 + 6, width() - 1 - 6, 1 + 6); + { + int w = 10; + int h = 6; + drawArrow(p, width() - 6 - 4 - w, (height() - h) / 2, w, h); + p.drawLine(width() - 6 - 4 - w - 4, 7, + width() - 6 - 4 - w - 4, height() - 8); + } +} + +void GUI::ComboBox::scrollEvent(ScrollEvent *e) +{ + /* + scroll_offset += e->delta; + if(scroll_offset < 0) scroll_offset = 0; + if(scroll_offset > (items.size() - 1)) + scroll_offset = (items.size() - 1); + repaintEvent(NULL); + */ +} + +void GUI::ComboBox::keyEvent(GUI::KeyEvent *e) +{ + if(e->direction != -1) return; + + /* + switch(e->keycode) { + case GUI::KeyEvent::KEY_UP: + { + selected--; + if(selected < 0) selected = 0; + if(selected < scroll_offset) { + scroll_offset = selected; + if(scroll_offset < 0) scroll_offset = 0; + } + } + break; + case GUI::KeyEvent::KEY_DOWN: + { + // Number of items that can be displayed at a time. + int numitems = height() / (font.textHeight() + padding); + + selected++; + if(selected > (items.size() - 1)) + selected = (items.size() - 1); + if(selected > (scroll_offset + numitems - 1)) { + scroll_offset = selected - numitems + 1; + if(scroll_offset > (items.size() - 1)) + scroll_offset = (items.size() - 1); + } + } + break; + case GUI::KeyEvent::KEY_HOME: + selected = 0; + break; + case GUI::KeyEvent::KEY_END: + selected = items.size() - 1; + break; + default: + break; + } + + repaintEvent(NULL); + */ +} + +void GUI::ComboBox::buttonEvent(ButtonEvent *e) +{ + if(e->direction != 1) return; + + if(!listbox->visible()) { + listbox->resize(width() - 10, 100); + listbox->move(x() + 5, y() + height() - 7); + } else { + if(handler) handler(ptr); + } + + listbox->setVisible(!listbox->visible()); +} + +#ifdef TEST_COMBOBOX +//Additional dependency files +//deps: +//Required cflags (autoconf vars may be used) +//cflags: +//Required link options (autoconf vars may be used) +//libs: +#include "test.h" + +TEST_BEGIN; + +// TODO: Put some testcode here (see test.h for usable macros). + +TEST_END; + +#endif/*TEST_COMBOBOX*/ diff --git a/plugingui/combobox.h b/plugingui/combobox.h new file mode 100644 index 0000000..bc4ae38 --- /dev/null +++ b/plugingui/combobox.h @@ -0,0 +1,73 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * combobox.h + * + * Sun Mar 10 19:04:50 CET 2013 + * Copyright 2013 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#ifndef __DRUMGIZMO_COMBOBOX_H__ +#define __DRUMGIZMO_COMBOBOX_H__ + +#include +#include + +#include "widget.h" +#include "font.h" +#include "listboxthin.h" +#include "painter.h" + +namespace GUI { + +class ComboBox : public Widget { +public: + ComboBox(Widget *parent); + ~ComboBox(); + + bool isFocusable() { return true; } + + void addItem(std::string name, std::string value); + + void clear(); + bool selectItem(int index); + std::string selectedName(); + std::string selectedValue(); + + void registerValueChangedHandler(void (*handler)(void *), void *ptr); + + virtual void repaintEvent(RepaintEvent *e); + virtual void buttonEvent(ButtonEvent *e); + virtual void scrollEvent(ScrollEvent *e); + virtual void keyEvent(KeyEvent *e); + +private: + Painter::Box box; + + GUI::Font font; + GUI::ListBoxThin *listbox; + + void (*handler)(void *); + void *ptr; +}; + +}; + +#endif/*__DRUMGIZMO_COMBOBOX_H__*/ diff --git a/plugingui/directory.cc b/plugingui/directory.cc new file mode 100644 index 0000000..1465c86 --- /dev/null +++ b/plugingui/directory.cc @@ -0,0 +1,443 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * directory.cc + * + * Tue Apr 23 22:01:07 CEST 2013 + * Copyright 2013 Jonas Suhr Christensen + * jsc@umbraculum.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "directory.h" + +#include +#include +#include +#include +#include +#include + +#ifdef WIN32 +#include +#include +#endif + +#include + +#define DRUMKIT_SUFFIX ".xml" + +// http://en.wikipedia.org/wiki/Path_(computing) +#ifdef WIN32 + #define SEP "\\" +#else + #define SEP "/" +#endif + +Directory::Directory(std::string path) +{ + setPath(path); +} + +Directory::~Directory() +{ +} + +std::string Directory::seperator() +{ + return SEP; +} + +void Directory::setPath(std::string path) +{ + DEBUG(directory, "Setting path to '%s'\n", path.c_str()); + this->_path = cleanPath(path); + refresh(); +} + +size_t Directory::count() +{ + return _files.size(); +} + +void Directory::refresh() +{ + _files = listFiles(_path, DIRECTORY_HIDDEN); +// _files = listFiles(_path); +} + +bool Directory::cd(std::string dir) +{ + //TODO: Should this return true or false? + if(dir.empty() || dir == ".") return true; + + DEBUG(directory, "Changing to '%s'\n", dir.c_str()); + if(exists(_path + SEP + dir)) { + std::string path = _path + SEP + dir; + setPath(path); + refresh(); + return true; + } else { + return false; + } +} + +bool Directory::cdUp() +{ + return this->cd(".."); +} + +std::string Directory::path() +{ + return cleanPath(_path); +} + +Directory::EntryList Directory::entryList() +{ + return _files; +} + +#define MAX_FILE_LENGTH 1024 +std::string Directory::cwd() { + char path[MAX_FILE_LENGTH]; + char* c = getcwd(path, MAX_FILE_LENGTH); + + if(c) return c; + else return ""; +} + +std::string Directory::cleanPath(std::string path) +{ + DEBUG(directory, "Cleaning path '%s'\n", path.c_str()); + + Directory::Path pathlst = parsePath(path); + return Directory::pathToStr(pathlst); +} + +Directory::EntryList Directory::listFiles(std::string path, unsigned char filter) +{ + DEBUG(directory, "Listing files in '%s'\n", path.c_str()); + + Directory::EntryList entries; + DIR *dir = opendir(path.c_str()); + if(!dir) { + DEBUG(directory, "Couldn't open directory '%s\n", path.c_str()); + return entries; + } + + std::vector directories; + std::vector files; + + struct dirent *entry; + while((entry = readdir(dir)) != NULL) { + std::string name = entry->d_name; + if(name == ".") continue; + + if(Directory::isRoot(path) && name == "..") continue; + + unsigned char entryinfo = 0; + if(isHidden(path + SEP + name)) { + entryinfo |= DIRECTORY_HIDDEN; + } + + std::string entrypath = path; + entrypath += SEP; + entrypath += entry->d_name; + if(Directory::isDir(entrypath)) { + if(!(entryinfo && filter)) { + if(name == "..") directories.push_back(entry->d_name); + else directories.push_back(std::string(SEP) + entry->d_name); + } + } + else { + int drumkit_suffix_length = strlen(DRUMKIT_SUFFIX); + if((int)name.size() < drumkit_suffix_length) continue; + if(name.substr(name.length() - drumkit_suffix_length, + drumkit_suffix_length) != DRUMKIT_SUFFIX) { + continue; + } + + +// if(!(entryinfo && filter)) { + files.push_back(entry->d_name); +// } + } + } + + +#ifdef WIN32 + DEBUG(directory, "Root is %s\n", Directory::root(path).c_str()); + DEBUG(directory, "Current path %s is root? %d", path.c_str(), Directory::isRoot(path)); +if(Directory::isRoot(path)) entries.push_back(".."); +#endif + + // sort + for(int x = 0; x < (int)directories.size(); x++) { + for(int y = 0; y < (int)directories.size(); y++) { + if(directories[x] < directories[y]) { + + std::string tmp = directories[x]; + directories[x] = directories[y]; + directories[y] = tmp; + } + } + } + + for(int x = 0; x < (int)files.size(); x++) { + for(int y = 0; y < (int)files.size(); y++) { + if(files[x] < files[y]) { + + std::string tmp = files[x]; + files[x] = files[y]; + files[y] = tmp; + } + } + } + + + for(std::vector::iterator it = directories.begin(); it != directories.end(); it++) { + entries.push_back(*it); + } + + for(std::vector::iterator it = files.begin(); it != files.end(); it++) { + entries.push_back(*it); + } + + + return entries; +} + +bool Directory::isRoot(std::string path) +{ +#ifdef WIN32 + std::transform(path.begin(), path.end(), path.begin(), ::tolower); + std::string root_str = Directory::root(path); + std::transform(root_str.begin(), root_str.end(), root_str.begin(), ::tolower); + // TODO: This is not a correct root calculation, but works with partitions + if(path.size() == 2) { + if(path == root_str) return true; + else return false; + } else if (path.size() == 3) { + if(path == root_str + SEP) return true; + return false; + } else { + return false; + } +#else + if(path == SEP) return true; + else return false; +#endif +} + +std::string Directory::root() +{ + return root(cwd()); +} + +std::string Directory::root(std::string path) +{ +#ifdef WIN32 + if(path.size() < 2) { + return "c:"; // just something default when input is bad + } else { + return path.substr(0, 2); + } +#else + return SEP; +#endif +} + +Directory::DriveList Directory::drives() +{ + Directory::DriveList drives; +#ifdef WIN32 + unsigned int d = GetLogicalDrives(); + for(int i = 0; i < 32; i++) { + if(d & (1 << i)) { + drive_t drive; + char name[] = "x:"; + name[0] = i + 'a'; + + drive.name = name; + drive.number = i; + drives.push_back(drive); + } + } +#endif + return drives; +} + +bool Directory::isDir() +{ + return isDir(_path); +} + +bool Directory::isDir(std::string path) +{ + DEBUG(directory, "Is '%s' a directory?\n", path.c_str()); + struct stat st; + if(stat(path.c_str(), &st) == 0) { + if((st.st_mode & S_IFDIR) != 0) { + DEBUG(directory, "\t...yes!\n"); + return true; + } + } + DEBUG(directory, "\t...no!\n"); + return false; +} + +bool Directory::fileExists(std::string filename) +{ + return !isDir(_path + SEP + filename); +} + +bool Directory::exists(std::string path) +{ + struct stat st; + if(stat(path.c_str(), &st) == 0) { + return true; + } else { + return false; + } +} + +bool Directory::isHidden(std::string path) +{ + DEBUG(directory, "Is '%s' hidden?\n", path.c_str()); +#ifdef WIN32 + // We dont want to filter out '..' pointing to root of a partition + unsigned pos = path.find_last_of("/\\"); + std::string entry = path.substr(pos+1); + if(entry == "..") { + return false; + } + + DWORD fattribs = GetFileAttributes(path.c_str()); + if(fattribs & FILE_ATTRIBUTE_HIDDEN) { + DEBUG(directory, "\t...yes!\n"); + return true; + } + else if(fattribs & FILE_ATTRIBUTE_SYSTEM) { + DEBUG(directory, "\t...yes!\n"); + return true; + } + else { + DEBUG(directory, "\t...no!\n"); + return false; + } +#else + unsigned pos = path.find_last_of("/\\"); + std::string entry = path.substr(pos+1); + if(entry.size() > 1 && + entry.at(0) == '.' && + entry.at(1) != '.') { + DEBUG(directory, "\t...yes!\n"); + return true; + } + else { + DEBUG(directory, "\t...no!\n"); + return false; + } +#endif +} + +Directory::Path Directory::parsePath(std::string path_str) +{ + //TODO: Handle "." input and propably other special cases + + DEBUG(directory, "Parsing path '%s'", path_str.c_str()); + Directory::Path path; + + std::string current_char; + std::string prev_char; + std::string dir; + for(size_t c = 0; c < path_str.size(); c++) { + current_char = path_str.at(c); + + if(current_char == SEP) { + if(prev_char == SEP) { + dir.clear(); + prev_char = current_char; + continue; + } else if(prev_char == ".") { + prev_char = current_char; + continue; + } + + if(!dir.empty()) path.push_back(dir); + dir.clear(); + continue; + } else if(current_char == ".") { + if(prev_char == ".") { + dir.clear(); + if(!path.empty()) path.pop_back(); + continue; + } + } + + dir += current_char; + prev_char = current_char; + } + + if(!dir.empty()) path.push_back(dir); + + return path; +} + +std::string Directory::pathToStr(Directory::Path& path) +{ + std::string cleaned_path; + DEBUG(directory, "Number of directories in path is %d\n", (int)path.size()); + + for(Directory::Path::iterator it = path.begin(); + it != path.end(); it++) { + std::string dir = *it; + DEBUG(directory, "\tDir '%s'\n", dir.c_str()); +#ifdef WIN32 + if(it != path.begin()) cleaned_path += SEP; + cleaned_path += dir; +#else + cleaned_path += SEP + dir; +#endif + } + + DEBUG(directory, "Cleaned path '%s'\n", cleaned_path.c_str()); + + if(cleaned_path.empty()) { + cleaned_path = Directory::root(); +#ifdef WIN32 + cleaned_path += SEP; +#endif + } + +#ifdef WIN32 + if(cleaned_path.size() == 2) cleaned_path += SEP; +#endif + + return cleaned_path; +} + +std::string Directory::pathDirectory(std::string filepath) +{ + if(Directory::isDir(filepath)) return filepath; + + Directory::Path path = parsePath(filepath); + if(path.size() > 0) path.pop_back(); + + return Directory::pathToStr(path); +} diff --git a/plugingui/directory.h b/plugingui/directory.h new file mode 100644 index 0000000..04ed3e7 --- /dev/null +++ b/plugingui/directory.h @@ -0,0 +1,93 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * directory.h + * + * Tue Apr 23 22:01:07 CEST 2013 + * Copyright 2013 Jonas Suhr Christensen + * jsc@umbraculum.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#ifndef __DRUMGIZMO_DIRECTORY_H__ +#define __DRUMGIZMO_DIRECTORY_H__ + +#include +#include + +#include + +#include +#include +#include + +#define DIRECTORY_HIDDEN 1 + +class Directory { + + public: + typedef struct drive { + int number; + std::string name; + } drive_t; + + typedef std::list EntryList; + typedef std::list DriveList; + + Directory(std::string path); + ~Directory(); + + std::string seperator(); + + size_t count(); + void refresh(); + std::string path(); + bool cdUp(); + bool cd(std::string dir); + bool isDir(); + void setPath(std::string path); + bool fileExists(std::string file); + + // Add filter, ie. directories or files only + EntryList entryList(); + + //void setSorting(); + + static std::string cwd(); + static std::string root(); + static std::string root(std::string path); + static std::string cleanPath(std::string path); + static Directory::EntryList listFiles(std::string path, unsigned char filter = 0); + static bool isRoot(std::string path); + static Directory::DriveList drives(); + static bool isDir(std::string path); + static bool isHidden(std::string entry); + static bool exists(std::string path); + static std::string pathDirectory(std::string filepath); + + private: + std::string _path; + EntryList _files; + DriveList _drives; + + typedef std::list Path; + static Path parsePath(std::string path); + static std::string pathToStr(Path &path); +}; + +#endif/*__DRUMGIZMO_DIRECTORY_H__*/ diff --git a/plugingui/eventhandler.cc b/plugingui/eventhandler.cc new file mode 100644 index 0000000..cec5fab --- /dev/null +++ b/plugingui/eventhandler.cc @@ -0,0 +1,194 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * eventhandler.cc + * + * Sun Oct 9 18:58:29 CEST 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "eventhandler.h" + +#include "window.h" +#include "painter.h" + +GUI::EventHandler::EventHandler(GUI::NativeWindow *n, GUI::Window *w) +{ + native = n; + window = w; + + last_click = 0; + last_was_dbl_click = false; +} + +bool GUI::EventHandler::hasEvent() +{ + return native->hasEvent(); +} + +GUI::Event *GUI::EventHandler::getNextEvent() +{ + return native->getNextEvent(); +} + +void GUI::EventHandler::registerCloseHandler(void (*handler)(void *), void *ptr) +{ + this->closeHandler = handler; + this->closeHandlerPtr = ptr; +} + +void GUI::EventHandler::processEvents() +{ + while(hasEvent()) { + Painter p(window); // Make sure we only redraw buffer one time. + + Event *event = getNextEvent(); + + if(event == NULL) continue; + + // Widget *widget = gctx->widgets[event->window_id]; + switch(event->type()) { + case Event::Repaint: + // window->repaint((RepaintEvent*)event); + window->redraw(); + break; + case Event::Resize: + { + // window->repaint((RepaintEvent*)event) + ResizeEvent *re = (ResizeEvent*)event; + if(re->width != window->width() || re->height != window->height()) { + window->resized(re->width, re->height); + //window->repaint_r(NULL); + } + } + break; + case Event::MouseMove: + { + MouseMoveEvent *me = (MouseMoveEvent*)event; + + Widget *w = window->find(me->x, me->y); + Widget *oldw = window->mouseFocus(); + if(w != oldw) { + // Send focus leave to oldw + if(oldw) oldw->mouseLeaveEvent(); + // Send focus enter to w + if(w) w->mouseEnterEvent(); + + window->setMouseFocus(w); + } + + if(window->buttonDownFocus()) { + Widget *w = window->buttonDownFocus(); + /* + if(me->x < w->x()) me->x = w->x(); + if(me->x > w->x() + w->width()) me->x = w->x() + w->width(); + if(me->y < w->y()) me->y = w->y(); + if(me->y > w->y() + w->height()) me->y = w->y() + w->height(); + */ + me->x -= w->windowX(); + me->y -= w->windowY(); + + window->buttonDownFocus()->mouseMoveEvent(me); + break; + } + + if(w) { + me->x -= w->windowX(); + me->y -= w->windowY(); + w->mouseMoveEvent(me); + } + } + break; + case Event::Button: + { + if(last_was_dbl_click) { + last_was_dbl_click = false; + continue; + } + ButtonEvent *be = (ButtonEvent *)event; + + last_was_dbl_click = be->doubleclick; + + Widget *w = window->find(be->x, be->y); + + if(window->buttonDownFocus()) { + if(be->direction == -1) { + Widget *w = window->buttonDownFocus(); + /* + if(be->x < w->x()) be->x = w->x(); + if(be->x > w->x() + w->width()) be->x = w->x() + w->width(); + if(be->y < w->y()) be->y = w->y(); + if(be->y > w->y() + w->height()) be->y = w->y() + w->height(); + */ + be->x -= w->windowX(); + be->y -= w->windowY(); + + w->buttonEvent(be); + break; + } else { + window->setButtonDownFocus(NULL); + } + } + + if(w) { + be->x -= w->windowX(); + be->y -= w->windowY(); + + w->buttonEvent(be); + + if(be->direction == 1) { + if(w->catchMouse()) window->setButtonDownFocus(w); + } + + if(w->isFocusable()) window->setKeyboardFocus(w); + } + } + break; + case Event::Scroll: + { + ScrollEvent *se = (ScrollEvent *)event; + + Widget *w = window->find(se->x, se->y); + + //printf("scroller (%d,%d) %p\n", se->x, se->y, w); + + if(w) { + se->x -= w->windowX(); + se->y -= w->windowY(); + + w->scrollEvent(se); + } + } + break; + case Event::Key: + // window->key((KeyEvent*)event); + // lineedit->keyEvent((KeyEvent*)event); + if(window->keyboardFocus()) + window->keyboardFocus()->keyEvent((KeyEvent*)event); + break; + case Event::Close: + if(closeHandler) closeHandler(closeHandlerPtr); + //delete window; + //window = NULL; + break; + } + delete event; + } +} diff --git a/plugingui/eventhandler.h b/plugingui/eventhandler.h new file mode 100644 index 0000000..028418d --- /dev/null +++ b/plugingui/eventhandler.h @@ -0,0 +1,62 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * eventhandler.h + * + * Sun Oct 9 18:58:29 CEST 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#ifndef __DRUMGIZMO_EVENTHANDLER_H__ +#define __DRUMGIZMO_EVENTHANDLER_H__ + +#include "guievent.h" +#include "nativewindow.h" +//#include "window.h" + +namespace GUI { +class Window; + +class EventHandler { +public: + EventHandler(NativeWindow *native, Window *window); + + void processEvents(); + + bool hasEvent(); + Event *getNextEvent(); + + void registerCloseHandler(void (*handler)(void *), void *ptr); + +private: + Window *window; + int last_click; + void (*closeHandler)(void *); + void *closeHandlerPtr; + + // Used to ignore mouse button release after a double click. + bool last_was_dbl_click; + + NativeWindow *native; +}; + +}; + +#endif/*__DRUMGIZMO_EVENTHANDLER_H__*/ diff --git a/plugingui/filebrowser.cc b/plugingui/filebrowser.cc new file mode 100644 index 0000000..f025c25 --- /dev/null +++ b/plugingui/filebrowser.cc @@ -0,0 +1,268 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * filebrowser.cc + * + * Mon Feb 25 21:09:44 CET 2013 + * Copyright 2013 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "filebrowser.h" + +#include "painter.h" +#include "button.h" + +#include "directory.h" + +#include +#include +#include + +#include +#include +#include + +#include + +#ifdef __MINGW32__ +#include +#endif + +struct GUI::FileBrowser::private_data { + GUI::LineEdit *lineedit; + GUI::ListBox *listbox; + void (*filesel_handler)(void *, std::string); + void *ptr; + Directory *dir; +#ifdef WIN32 + bool above_root; + bool in_root; +#endif +}; + +static void cancel(void *ptr) +{ + GUI::FileBrowser *fp = (GUI::FileBrowser *)ptr; + fp->hide(); +} + +static void changeDir(void *ptr) +{ + struct GUI::FileBrowser::private_data *prv = + (struct GUI::FileBrowser::private_data *) ptr; + + GUI::ListBox *lb = prv->listbox; + GUI::LineEdit *le = prv->lineedit; + std::string value = lb->selectedValue(); + Directory* dir = prv->dir; + +// if(!Directory::isDir(dir->path() + dir->seperator())) { +// return; +// } + + lb->clear(); + + INFO(filebrowser, "Changing path to '%s'\n", + (dir->path() + dir->seperator() + value).c_str()); + +#ifdef WIN32 + if(prv->above_root && !value.empty()) { + dir->setPath(value + dir->seperator()); + value.clear(); + prv->above_root = false; + } +#endif + + if(value.empty() && !dir->isDir() && Directory::exists(dir->path())) { + DEBUG(filebrowser, "Selecting file '%s'\n", dir->path().c_str()); + if(prv->filesel_handler) prv->filesel_handler(prv->ptr, dir->path().c_str()); + return; + } + + if(!value.empty() && dir->fileExists(value)) { + std::string file = dir->path() + dir->seperator() + value; + DEBUG(filebrowser, "Selecting file '%s'\n", file.c_str()); + if(prv->filesel_handler) prv->filesel_handler(prv->ptr, file); + return; + } + + std::vector items; + +#ifdef WIN32 + if(Directory::isRoot(dir->path()) && value == "..") { + DEBUG(filebrowser, "Showing partitions...\n"); + Directory::DriveList entries = dir->drives(); + for(Directory::DriveList::iterator it = entries.begin(); + it != entries.end(); it++) { + GUI::ListBoxBasic::Item item; + std::string name = (*it).name; + item.name = name; + item.value = name; + items.push_back(item); + } + prv->above_root = true; + } else { +#endif + + if(!value.empty() && !dir->cd(value)) { + DEBUG(filebrowser, "Error changing to '%s'\n", + (dir->path() + dir->seperator() + value).c_str()); + return; + } + + Directory::EntryList entries = dir->entryList(); + + if(entries.empty()) { + dir->cdUp(); + entries = dir->entryList(); + } + + DEBUG(filebrowser, "Setting path of lineedit to %s\n", + dir->path().c_str()); + le->setText(dir->path()); + + for(Directory::EntryList::iterator it = entries.begin(); + it != entries.end(); it++) { + GUI::ListBoxBasic::Item item; + std::string name = *it; + item.name = name; + item.value = name; + items.push_back(item); + } +#ifdef WIN32 + } +#endif + lb->addItems(items); +} + +static void handleKeyEvent(void *ptr) { + struct GUI::FileBrowser::private_data *prv = + (struct GUI::FileBrowser::private_data *) ptr; + + GUI::ListBox *lb = prv->listbox; + lb->clearSelectedValue(); + GUI::LineEdit *le = prv->lineedit; + + std::string value = le->text(); + if(value.size() > 1 && value[0] == '@') { + DEBUG(filebrowser, "Selecting ref-file '%s'\n", value.c_str()); + if(prv->filesel_handler) { + prv->filesel_handler(prv->ptr, value); + } + return; + } + + prv->dir->setPath(le->text()); + changeDir(ptr); +} + +GUI::FileBrowser::FileBrowser(GUI::Widget *parent) + : GUI::Widget(parent), + lbl_path(this), lineedit(this), listbox(this), btn_sel(this), btn_esc(this), + back(":bg.png") +{ + prv = new struct GUI::FileBrowser::private_data(); + prv->filesel_handler = NULL; + + prv->dir = new Directory(Directory::cwd()); +#ifdef WIN32 + prv->above_root = false; +#endif + + lbl_path.setText("Path:"); + +// lineedit.setReadOnly(true); + prv->lineedit = &lineedit; + prv->lineedit->registerEnterPressedHandler(handleKeyEvent, prv); + + prv->listbox = &listbox; + listbox.registerSelectHandler(changeDir, prv); + + btn_sel.setText("Select"); + btn_sel.registerClickHandler(changeDir, prv); + + btn_esc.setText("Cancel"); + btn_esc.registerClickHandler(cancel, this); + + changeDir(prv); + + resize(200, 190); +} + +GUI::FileBrowser::~FileBrowser() +{ + // delete prv->listbox; + delete prv; +} + +void GUI::FileBrowser::setPath(std::string path) +{ + INFO(filebrowser, "Setting path to '%s'\n", path.c_str()); + if(path.empty()) path = Directory::cwd(); + + prv->dir->setPath(Directory::pathDirectory(path)); + prv->listbox->clear(); + + changeDir(prv); +} + +void GUI::FileBrowser::resize(int w, int h) +{ + GUI::Widget::resize(w,h); + + int offset = 0; + int brd = 5; // border + int btn_h = 30; + + offset += brd; + + lbl_path.move(0, offset); + lineedit.move(60, offset); + + offset += btn_h; + + lbl_path.resize(60, btn_h); + lineedit.resize(w - 60 - brd, btn_h); + + offset += brd; + + listbox.move(brd, offset); + listbox.resize(w - 1 - 2*brd, h - btn_h - 2*brd - offset); + + btn_esc.move(brd, h - btn_h - brd); + btn_esc.resize((w - 1 - 2*brd) / 2 - brd / 2, btn_h); + + btn_sel.move(brd + w / 2 - brd / 2, h - btn_h - brd); + btn_sel.resize((w - 1 - 2*brd) / 2, btn_h); +} + +void GUI::FileBrowser::registerFileSelectHandler(void (*handler)(void *, + std::string), + void *ptr) +{ + prv->filesel_handler = handler; + prv->ptr = ptr; +} + +void GUI::FileBrowser::repaintEvent(GUI::RepaintEvent *e) +{ + Painter p(this); + p.drawImageStretched(0,0, &back, width(), height()); +} diff --git a/plugingui/filebrowser.h b/plugingui/filebrowser.h new file mode 100644 index 0000000..6583b53 --- /dev/null +++ b/plugingui/filebrowser.h @@ -0,0 +1,75 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * filebrowser.h + * + * Mon Feb 25 21:09:43 CET 2013 + * Copyright 2013 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#ifndef __DRUMGIZMO_FILEBROWSER_H__ +#define __DRUMGIZMO_FILEBROWSER_H__ + +#include "widget.h" + +#include "button.h" +#include "listbox.h" +#include "lineedit.h" +#include "label.h" +#include "image.h" +#include "directory.h" + +namespace GUI { + +class FileBrowser : public Widget { +public: + struct private_data; + + FileBrowser(Widget *parent); + ~FileBrowser(); + + void setPath(std::string path); + + bool isFocusable() { return true; } + + void registerFileSelectHandler(void (*handler)(void *, std::string), + void *ptr); + + virtual void repaintEvent(RepaintEvent *e); + + virtual void resize(int w, int h); + +private: + struct private_data *prv; + + GUI::Label lbl_path; + GUI::LineEdit lineedit; + + GUI::ListBox listbox; + + GUI::Button btn_sel; + GUI::Button btn_esc; + + Image back; +}; + +}; + +#endif/*__DRUMGIZMO_FILEBROWSER_H__*/ diff --git a/plugingui/font.cc b/plugingui/font.cc new file mode 100644 index 0000000..828286c --- /dev/null +++ b/plugingui/font.cc @@ -0,0 +1,131 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * font.cc + * + * Sat Nov 12 11:13:41 CET 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "font.h" + +#ifdef X11 +#include +#endif/*X11*/ + +GUI::Font::Font(std::string fontfile) + : img_font(fontfile) +{ + int px = 0; + int c; + for(c = 0; c < 255 && px < (int)img_font.width(); c++) { + character_offset[c] = px + 1; + character_pre_bias[c] = 0; + character_post_bias[c] = 0; + if(c > 0) { + character_width[c - 1] = + character_offset[c] - character_offset[c - 1] - 1; + } + px++; + GUI::Colour c; + while(px < (int)img_font.width()) { + c = img_font.getPixel(px, 0); + // Find next purple pixel in top row: + if(c.red == 1 && c.green == 0 && c.blue == 1 && c.alpha == 1) break; + px++; + } + } + c++; + character_width[c - 1] = character_offset[c] - character_offset[c - 1] - 1; +} + +void GUI::Font::setFace(std::string face) +{ + face = face; +} + +std::string GUI::Font::face() +{ + return "";//face; +} + +void GUI::Font::setSize(size_t points) +{ + points = points; +} + +size_t GUI::Font::size() +{ + return 0; +} + +size_t GUI::Font::textWidth(std::string text) +{ + size_t len = 0; + + for(size_t i = 0; i < text.length(); i++) { + unsigned int cha = text[i]; + len += character_width[(char)cha] + 1 + character_post_bias[(char)cha]; + } + + return len; +} + +size_t GUI::Font::textHeight(std::string text) +{ + return img_font.height(); +} + +GUI::PixelBufferAlpha *GUI::Font::render(std::string text) +{ + int border = 1; + PixelBufferAlpha *pb = + new PixelBufferAlpha(textWidth(text), textHeight(text)); + + int x_offset = 0; + for(size_t i = 0; i < text.length(); i++) { + unsigned int cha = text[i]; + for(size_t x = 0; x < character_width[(char)cha]; x++) { + for(size_t y = 0; y < img_font.height(); y++) { + Colour c = img_font.getPixel(x + (character_offset[(char)cha]), y); + pb->setPixel(x + x_offset + character_pre_bias[(char)cha], y, + c.red * 255, c.green * 255, c.blue * 255, c.alpha * 255); + } + } + x_offset += character_width[(char)cha] + border + + character_post_bias[(char)cha]; + } + + return pb; +} + +#ifdef TEST_FONT +//deps: +//cflags: +//libs: +#include "test.h" + +TEST_BEGIN; + +// TODO: Put some testcode here (see test.h for usable macros). + +TEST_END; + +#endif/*TEST_FONT*/ diff --git a/plugingui/font.h b/plugingui/font.h new file mode 100644 index 0000000..b47fbde --- /dev/null +++ b/plugingui/font.h @@ -0,0 +1,63 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * font.h + * + * Sat Nov 12 11:13:41 CET 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#ifndef __DRUMGIZMO_FONT_H__ +#define __DRUMGIZMO_FONT_H__ + +#include +#include + +#include "pixelbuffer.h" +#include "image.h" + +namespace GUI { + +class Font { +public: + Font(std::string fontfile = ":font.png"); + + void setFace(std::string face); + std::string face(); + + void setSize(size_t points); + size_t size(); + + size_t textWidth(std::string text); + size_t textHeight(std::string text = ""); + + PixelBufferAlpha *render(std::string text); + +private: + Image img_font; + + std::map character_offset; + std::map character_width; + std::map character_pre_bias; + std::map character_post_bias; +}; + +}; +#endif/*__DRUMGIZMO_FONT_H__*/ diff --git a/plugingui/guievent.h b/plugingui/guievent.h new file mode 100644 index 0000000..4732101 --- /dev/null +++ b/plugingui/guievent.h @@ -0,0 +1,141 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * event.h + * + * Sun Oct 9 16:11:47 CEST 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#ifndef __DRUMGIZMO_GUI_EVENT_H__ +#define __DRUMGIZMO_GUI_EVENT_H__ + +#include + +#include + +#ifdef X11 +#include +#include +#endif/*X11*/ + +namespace GUI { + +class Event { +public: + typedef enum { + MouseMove, + Repaint, + Button, + Scroll, + Key, + Close, + Resize + } Type; + virtual ~Event() {} + + virtual Type type() = 0; + +#ifdef X11 + ::Window window_id; +#endif/*X11*/ +}; + +class MouseMoveEvent : public Event { +public: + Type type() { return MouseMove; } + + int x; + int y; +}; + +class ButtonEvent : public Event { +public: + Type type() { return Button; } + + int x; + int y; + + int direction; + int button; + int doubleclick; +}; + +class ScrollEvent : public Event { +public: + Type type() { return Scroll; } + + int x; + int y; + + int delta; +}; + +class RepaintEvent : public Event { +public: + Type type() { return Repaint; } + + int x; + int y; + size_t width; + size_t height; +}; + +class KeyEvent : public Event { +public: + Type type() { return Key; } + + int direction; + int keycode; + std::string text; + + enum { + KEY_UNKNOWN =-1, + KEY_LEFT = 1, + KEY_RIGHT = 2, + KEY_UP = 3, + KEY_DOWN = 4, + KEY_DELETE = 5, + KEY_BACKSPACE = 6, + KEY_HOME = 7, + KEY_END = 8, + KEY_PGDOWN = 9, + KEY_PGUP = 10, + KEY_ENTER = 11, + KEY_CHARACTER = 0xffff // character data is stored in 'text' + }; +}; + +class CloseEvent : public Event { +public: + Type type() { return Close; } +}; + +class ResizeEvent : public Event { +public: + Type type() { return Resize; } + + size_t width; + size_t height; +}; + +}; + +#endif/*__DRUMGIZMO_GUI_EVENT_H__*/ diff --git a/plugingui/image.cc b/plugingui/image.cc new file mode 100644 index 0000000..65b8242 --- /dev/null +++ b/plugingui/image.cc @@ -0,0 +1,119 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * image.cc + * + * Sat Mar 16 15:05:09 CET 2013 + * Copyright 2013 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "image.h" + +#include +#include +#include +#include +#include +#include + +#include + +#include "resource.h" +// http://blog.hammerian.net/2009/reading-png-images-from-memory/ + +#include "lodepng/lodepng.h" + +GUI::Image::Image(const char* data, size_t size) +{ + load(data, size); +} + +GUI::Image::Image(std::string filename) +{ + GUI::Resource rc(filename); + load(rc.data(), rc.size()); +} + +GUI::Image::~Image() +{ + free(image_data); +} + +void GUI::Image::setError(int err) +{ + GUI::Resource rc(":png_error"); + + const unsigned char *p = (const unsigned char *)rc.data(); + + uint32_t iw, ih; + + memcpy(&iw, p, sizeof(uint32_t)); p += sizeof(uint32_t); + memcpy(&ih, p, sizeof(uint32_t)); p += sizeof(uint32_t); + + w = iw; + h = ih; + + DEBUG(image, "w:%d, h:%d\n", (int)w, (int)h); + + image_data = (unsigned char*)malloc(rc.size() - 8); + memcpy(image_data, p, rc.size() - 8); +} + +void GUI::Image::load(const char* data, size_t size) +{ + //unsigned lodepng_decode32(unsigned char** out, unsigned* w, unsigned* h, + // const unsigned char* in, size_t insize); + unsigned iw, ih; + unsigned res = lodepng_decode32((unsigned char**)&image_data, &iw, &ih, + (const unsigned char*)data, size); + w = iw; + h = ih; + + if(res != 0) { + ERR(image, "[read_png_file] Error during init_io"); + setError(3); + return; + } +} + +size_t GUI::Image::width() +{ + return w; +} + +size_t GUI::Image::height() +{ + return h; +} + +GUI::Colour GUI::Image::getPixel(size_t x, size_t y) +{ + if(x > width() || y > height()) return GUI::Colour(0,0,0,0); + unsigned char *ptr = &image_data[(x + y * width()) * 4]; + float r = ptr[0]; + float g = ptr[1]; + float b = ptr[2]; + float a = ptr[3]; + GUI::Colour c(r / 255.0, + g / 255.0, + b / 255.0, + a / 255.0); + return c; +} diff --git a/plugingui/image.h b/plugingui/image.h new file mode 100644 index 0000000..cec1518 --- /dev/null +++ b/plugingui/image.h @@ -0,0 +1,59 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * image.h + * + * Sat Mar 16 15:05:08 CET 2013 + * Copyright 2013 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#ifndef __DRUMGIZMO_IMAGE_H__ +#define __DRUMGIZMO_IMAGE_H__ + +#include + +#include "colour.h" +#include "resource.h" + +namespace GUI { + +class Image { +public: + Image(const char* data, size_t size); + Image(std::string filename); + ~Image(); + + size_t width(); + size_t height(); + + Colour getPixel(size_t x, size_t y); + +private: + void setError(int err); + + void load(const char* data, size_t size); + + size_t w, h; + unsigned char *image_data; +}; + +}; + +#endif/*__DRUMGIZMO_IMAGE_H__*/ diff --git a/plugingui/knob.cc b/plugingui/knob.cc new file mode 100644 index 0000000..b843106 --- /dev/null +++ b/plugingui/knob.cc @@ -0,0 +1,188 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * knob.cc + * + * Thu Feb 28 07:37:27 CET 2013 + * Copyright 2013 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "knob.h" + +#include "painter.h" + +#include +#include + +// M_PI is not defined in math.h if __STRICT_ANSI__ is defined. +#ifdef __STRICT_ANSI__ +#undef __STRICT_ANSI__ +#endif +#include + +namespace GUI { + +Knob::Knob(Widget *parent) + : Widget(parent) + , img_knob(":knob.png") +{ + state = up; + + maximum = 1.0; + minimum = 0.0; + + currentValue = minimum; + + mouse_offset_x = 0; +} + +void Knob::setValue(float value) +{ + internalSetValue(value); +} + +float Knob::value() +{ + return currentValue; +} + +void Knob::scrollEvent(ScrollEvent *e) +{ + float value = currentValue - (e->delta / 200.0); + internalSetValue(value); +} + +void Knob::mouseMoveEvent(MouseMoveEvent *e) +{ + if(state == down) { + if(mouse_offset_x == (e->x + -1 * e->y)) { + return; + } + + float dval = mouse_offset_x - (e->x + -1 * e->y); + float value = currentValue - (dval / 300.0); + + internalSetValue(value); + + mouse_offset_x = e->x + -1 * e->y; + } +} + +void Knob::keyEvent(KeyEvent *e) +{ + if(e->direction != -1) { + return; + } + + float value = currentValue; + switch(e->keycode) { + case KeyEvent::KEY_UP: + value += 0.01; + break; + case KeyEvent::KEY_DOWN: + value -= 0.01; + break; + case KeyEvent::KEY_RIGHT: + value += 0.01; + break; + case KeyEvent::KEY_LEFT: + value -= 0.01; + break; + case KeyEvent::KEY_HOME: + value = 0; + break; + case KeyEvent::KEY_END: + value = 1; + break; + default: + break; + } + + internalSetValue(value); +} + +void Knob::buttonEvent(ButtonEvent *e) +{ + if(e->direction == 1) { + state = down; + mouse_offset_x = e->x + -1*e->y; + } + if(e->direction == -1) { + state = up; + mouse_offset_x = e->x + -1*e->y; + clicked(); + } +} + +void Knob::repaintEvent(RepaintEvent *e) +{ + int diameter = (width()>height()?height():width()); + int radius = diameter / 2; + int center_x = width() / 2; + int center_y = height() / 2; + + Painter p(this); + + p.clear(); + p.drawImageStretched(0, 0, &img_knob, diameter, diameter); + + char buf[64]; + sprintf(buf, "%.2f", currentValue * maximum); + Font font; + p.drawText(center_x - font.textWidth(buf) / 2 + 1, + center_y + font.textHeight(buf) / 2 + 1, font, buf); + + // Make it start from 20% and stop at 80% + double padval = currentValue * 0.8 + 0.1; + + double from_x = sin((-1 * padval + 1) * 2 * M_PI) * radius * 0.6; + double from_y = cos((-1 * padval + 1) * 2 * M_PI) * radius * 0.6; + + double to_x = sin((-1 * padval + 1) * 2 * M_PI) * radius * 0.8; + double to_y = cos((-1 * padval + 1) * 2 * M_PI) * radius * 0.8; + + // Draw "fat" line by drawing 9 lines with moved start/ending points. + p.setColour(Colour(1, 0, 0, 1)); + for(int _x = -1; _x < 2; _x++) { + for(int _y = -1; _y < 2; _y++) { + p.drawLine(from_x + center_x + _x, + from_y + center_y + _y, + to_x + center_x + _x, + to_y + center_y + _y); + + } + } +} + +void Knob::internalSetValue(float value) +{ + if(value < minimum) value = minimum; + if(value > maximum) value = maximum; + + if(value == currentValue) { + return; + } + + currentValue = value; + valueChangedNotifier.notify(currentValue); + repaintEvent(NULL); +} + +} // GUI:: diff --git a/plugingui/knob.h b/plugingui/knob.h new file mode 100644 index 0000000..da03710 --- /dev/null +++ b/plugingui/knob.h @@ -0,0 +1,80 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * knob.h + * + * Thu Feb 28 07:37:27 CET 2013 + * Copyright 2013 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#pragma once + +#include "widget.h" + +#include "image.h" + +#include "notifier.h" + +namespace GUI { + +class Knob : public Widget { +public: + Knob(Widget *parent); + + bool catchMouse() override { return true; } + bool isFocusable() override { return true; } + + void setValue(float value); + float value(); + + Notifier valueChangedNotifier; // (float newValue) + +protected: + virtual void clicked() {} + + // From Widget: + virtual void repaintEvent(RepaintEvent *e) override; + virtual void buttonEvent(ButtonEvent *e) override; + virtual void mouseMoveEvent(MouseMoveEvent *e) override; + virtual void scrollEvent(ScrollEvent *e) override; + virtual void keyEvent(KeyEvent *e) override; + +private: + //! Sets the internal value and sends out the changed notification. + void internalSetValue(float value); + + typedef enum { + up, + down + } state_t; + + state_t state; + + float currentValue; + float maximum; + float minimum; + + Image img_knob; + + int mouse_offset_x; +}; + +} // GUI:: + diff --git a/plugingui/label.cc b/plugingui/label.cc new file mode 100644 index 0000000..be37d82 --- /dev/null +++ b/plugingui/label.cc @@ -0,0 +1,57 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * label.cc + * + * Sun Oct 9 13:02:18 CEST 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "label.h" + +#include "painter.h" +#include "guievent.h" + +namespace GUI { + +Label::Label(GUI::Widget *parent) + : Widget(parent) +{ +} + +void Label::setText(std::string text) +{ + _text = text; + repaintEvent(NULL); +} + +void Label::repaintEvent(GUI::RepaintEvent *e) +{ + Painter p(this); + + p.clear(); + + p.setColour(Colour(1)); + + Font font(":fontemboss.png"); + p.drawText(10, (height() + font.textHeight()) / 2, font, _text, true); +} + +} // GUI:: diff --git a/plugingui/label.h b/plugingui/label.h new file mode 100644 index 0000000..707cdb1 --- /dev/null +++ b/plugingui/label.h @@ -0,0 +1,51 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * label.h + * + * Sun Oct 9 13:02:17 CEST 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#pragma once + +#include "widget.h" + +#include + +namespace GUI { + +class RepaintEvent; + +class Label : public Widget { +public: + Label(Widget *parent); + + void setText(std::string text); + +protected: + // From Widget: + virtual void repaintEvent(RepaintEvent *e) override; + +private: + std::string _text; +}; + +} // GUI:: diff --git a/plugingui/led.cc b/plugingui/led.cc new file mode 100644 index 0000000..d26a0de --- /dev/null +++ b/plugingui/led.cc @@ -0,0 +1,106 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * led.cc + * + * Sat Oct 15 19:12:33 CEST 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "led.h" + +#include "painter.h" + +GUI::LED::LED(Widget *parent) + : GUI::Widget(parent) +{ + state = off; +} + +void GUI::LED::setState(GUI::LED::state_t state) +{ + if(this->state != state) { + this->state = state; + repaintEvent(NULL); + } +} + +void GUI::LED::repaintEvent(GUI::RepaintEvent *e) +{ + size_t h = height() - 1; + size_t w = width() - 1; + + Painter p(this); + float alpha = 0.9; + switch(state) { + case red: + p.setColour(Colour(1, 0, 0,alpha)); + break; + case green: + p.setColour(Colour(0, 1, 0, alpha)); + break; + case blue: + p.setColour(Colour(0, 0, 1, alpha)); + break; + case off: + p.setColour(Colour(0.2, 0.2, 0.2, alpha)); + break; + } + + size_t size = w / 2; + if(h / 2 < size) size = h / 2; + p.drawFilledCircle(w/2, h/2, size); + + switch(state) { + case red: + p.setColour(Colour(0.4, 0, 0,alpha)); + break; + case green: + p.setColour(Colour(0, 0.4, 0, alpha)); + break; + case blue: + p.setColour(Colour(0, 0, 0.4, alpha)); + break; + case off: + p.setColour(Colour(0.1, 0.1, 0.1, alpha)); + break; + } + p.drawCircle(w/2, h/2, size); + + p.setColour(Colour(1,alpha)); + p.drawFilledCircle(w/3, h/3, size / 6); +} + +#ifdef TEST_LED +//Additional dependency files +//deps: +//Required cflags (autoconf vars may be used) +//cflags: +//Required link options (autoconf vars may be used) +//libs: +#include "test.h" + +TEST_BEGIN; + +// TODO: Put some testcode here (see test.h for usable macros). + +TEST_END; + +#endif/*TEST_LED*/ diff --git a/plugingui/led.h b/plugingui/led.h new file mode 100644 index 0000000..7bbd59a --- /dev/null +++ b/plugingui/led.h @@ -0,0 +1,56 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * led.h + * + * Sat Oct 15 19:12:33 CEST 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#ifndef __DRUMGIZMO_LED_H__ +#define __DRUMGIZMO_LED_H__ + +#include "widget.h" + +namespace GUI { + +class LED : public Widget { +public: + typedef enum { + red, + green, + blue, + off + } state_t; + + LED(Widget *parent); + + void setState(state_t state); + + //protected: + void repaintEvent(RepaintEvent *e); + +private: + state_t state; +}; + +}; + +#endif/*__DRUMGIZMO_LED_H__*/ diff --git a/plugingui/lineedit.cc b/plugingui/lineedit.cc new file mode 100644 index 0000000..5e1eb9b --- /dev/null +++ b/plugingui/lineedit.cc @@ -0,0 +1,239 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * lineedit.cc + * + * Sun Oct 9 13:01:52 CEST 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "lineedit.h" + +#include + +#include "window.h" + +#include + +#include + +#define BORDER 10 + +GUI::LineEdit::LineEdit(Widget *parent) + : GUI::Widget(parent) +{ + pos = 0; + offsetpos = 0; + setReadOnly(false); + + box.topLeft = new Image(":widget_tl.png"); + box.top = new Image(":widget_t.png"); + box.topRight = new Image(":widget_tr.png"); + box.left = new Image(":widget_l.png"); + box.right = new Image(":widget_r.png"); + box.bottomLeft = new Image(":widget_bl.png"); + box.bottom = new Image(":widget_b.png"); + box.bottomRight = new Image(":widget_br.png"); + box.center = new Image(":widget_c.png"); + + handler = NULL; +} + +void GUI::LineEdit::registerEnterPressedHandler(void (*handler)(void *), void *ptr) +{ + this->handler = handler; + this->ptr = ptr; +} + +void GUI::LineEdit::setReadOnly(bool ro) +{ + readonly = ro; +} + +bool GUI::LineEdit::readOnly() +{ + return readonly; +} + +void GUI::LineEdit::setText(std::string text) +{ + _text = text; + pos = text.size(); + + repaintEvent(NULL); + textChanged(); +} + +std::string GUI::LineEdit::text() +{ + return _text; +} + +void GUI::LineEdit::buttonEvent(ButtonEvent *e) +{ + if(readOnly()) return; + + + if(e->direction == 1) { + for(int i = 0; i < (int)_visibletext.length(); i++) { + if(e->x < (int)(font.textWidth(_visibletext.substr(0, i)) + BORDER)) { + pos = i + offsetpos; + break; + } + } + repaintEvent(NULL); + } +} + +void GUI::LineEdit::keyEvent(GUI::KeyEvent *e) +{ + if(readOnly()) return; + + bool change = false; + + if(e->direction == -1) { + + if(e->keycode == GUI::KeyEvent::KEY_LEFT) { + if(pos) pos--; + if(offsetpos >= pos) walkstate = WALK_LEFT; + + } else if(e->keycode == GUI::KeyEvent::KEY_HOME) { + pos = 0; + + } else if(e->keycode == GUI::KeyEvent::KEY_END) { + pos = _text.length(); + + } else if(e->keycode == GUI::KeyEvent::KEY_RIGHT) { + if(pos < _text.length()) pos++; + if(offsetpos + _visibletext.length() <= pos && + pos < _text.length()) walkstate = WALK_RIGHT; + + } else if(e->keycode == GUI::KeyEvent::KEY_DELETE) { + if(pos < _text.length()) { + std::string t = _text.substr(0, pos); + t += _text.substr(pos + 1, std::string::npos); + _text = t; + change = true; + } + + } else if(e->keycode == GUI::KeyEvent::KEY_BACKSPACE) { + if(pos > 0) { + std::string t = _text.substr(0, pos - 1); + t += _text.substr(pos, std::string::npos); + _text = t; + pos--; + change = true; + } + + } else if(e->keycode == GUI::KeyEvent::KEY_CHARACTER) { + std::string pre = _text.substr(0, pos); + std::string post = _text.substr(pos, std::string::npos); + _text = pre + e->text + post; + change = true; + pos++; + + } else if(e->keycode == GUI::KeyEvent::KEY_ENTER) { + if(handler) handler(ptr); + } + repaintEvent(NULL); + } + + if(change) textChanged(); +} + +void GUI::LineEdit::repaintEvent(GUI::RepaintEvent *e) +{ + Painter p(this); + + p.clear(); + + int w = width(); + int h = height(); + if(w == 0 || h == 0) return; + p.drawBox(0, 0, &box, w, h); + + p.setColour(GUI::Colour(183.0/255.0, 219.0/255.0 , 255.0/255.0, 1)); + + if(walkstate == WALK_LEFT) { + _visibletext = _text.substr(pos, std::string::npos); + offsetpos = pos; + } + else if(walkstate == WALK_RIGHT) { + int d = (offsetpos < _text.length()) ? 1 : 0; + _visibletext = _text.substr(offsetpos + d); + offsetpos = offsetpos + d; + } + else { + _visibletext = _text; + offsetpos = 0; + } + while(true) { + int textwidth = font.textWidth(_visibletext); + if(textwidth > w - BORDER - 4 + 3) { + if(walkstate == WALK_LEFT) { + _visibletext = _visibletext.substr(0, _visibletext.length()-1); + } + else if(walkstate == WALK_RIGHT) { + _visibletext = _visibletext.substr(0, _visibletext.length()-1); + } + else { + if(offsetpos < pos) { + _visibletext = _visibletext.substr(1); + offsetpos++; + } + else { + _visibletext = _visibletext.substr(0, _visibletext.length() - 1); + } + } + } + else { + break; + } + } + + walkstate = NOOP; + + p.drawText(BORDER - 4 + 3, height()/2+5 + 1 + 1 + 1, font, _visibletext); + + if(readOnly()) return; + + if(hasKeyboardFocus()) { + size_t px = font.textWidth(_visibletext.substr(0, pos - offsetpos)); + p.drawLine(px + BORDER - 1 - 4 + 3, 6, + px + BORDER - 1 - 4 + 3, height() - 7); + } +} + +#ifdef TEST_LINEEDIT +//Additional dependency files +//deps: +//Required cflags (autoconf vars may be used) +//cflags: +//Required link options (autoconf vars may be used) +//libs: +#include "test.h" + +TEST_BEGIN; + +// TODO: Put some testcode here (see test.h for usable macros). + +TEST_END; + +#endif/*TEST_LINEEDIT*/ diff --git a/plugingui/lineedit.h b/plugingui/lineedit.h new file mode 100644 index 0000000..f85e9bd --- /dev/null +++ b/plugingui/lineedit.h @@ -0,0 +1,86 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * lineedit.h + * + * Sun Oct 9 13:01:52 CEST 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#ifndef __DRUMGIZMO_LINEEDIT_H__ +#define __DRUMGIZMO_LINEEDIT_H__ + + +#include + +#include "widget.h" +#include "font.h" +#include "painter.h" + +namespace GUI { + +class LineEdit : public Widget { +public: + LineEdit(Widget *parent); + + bool isFocusable() { return true; } + + std::string text(); + void setText(std::string text); + + void setReadOnly(bool readonly); + bool readOnly(); + + void registerEnterPressedHandler(void (*handler)(void *), void *ptr); + + //protected: + virtual void keyEvent(KeyEvent *e); + virtual void repaintEvent(RepaintEvent *e); + virtual void buttonEvent(ButtonEvent *e); + +protected: + virtual void textChanged() {} + +private: + Painter::Box box; + + Font font; + + std::string _text; + size_t pos; + std::string _visibletext; + size_t offsetpos; + + enum state_t { + NOOP = 0, + WALK_LEFT = 1, + WALK_RIGHT = 2 + }; + state_t walkstate; + + bool readonly; + + void (*handler)(void *); + void *ptr; +}; + +}; + +#endif/*__DRUMGIZMO_LINEEDIT_H__*/ diff --git a/plugingui/listbox.cc b/plugingui/listbox.cc new file mode 100644 index 0000000..ed873b2 --- /dev/null +++ b/plugingui/listbox.cc @@ -0,0 +1,123 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * listbox.cc + * + * Mon Feb 25 21:21:41 CET 2013 + * Copyright 2013 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "listbox.h" + +#include "painter.h" +#include "font.h" + +#include + +GUI::ListBox::ListBox(GUI::Widget *parent) + : GUI::Widget(parent) +{ + box.topLeft = new Image(":widget_tl.png"); + box.top = new Image(":widget_t.png"); + box.topRight = new Image(":widget_tr.png"); + box.left = new Image(":widget_l.png"); + box.right = new Image(":widget_r.png"); + box.bottomLeft = new Image(":widget_bl.png"); + box.bottom = new Image(":widget_b.png"); + box.bottomRight = new Image(":widget_br.png"); + box.center = new Image(":widget_c.png"); + + basic = new GUI::ListBoxBasic(this); + basic->move(box.left->width(), box.top->height()); +} + +GUI::ListBox::~ListBox() +{ +} + +void GUI::ListBox::addItem(std::string name, std::string value) +{ + basic->addItem(name, value); +} + +void GUI::ListBox::addItems(std::vector &items) +{ + basic->addItems(items); +} + +void GUI::ListBox::clear() +{ + basic->clear(); +} + +bool GUI::ListBox::selectItem(int index) +{ + return basic->selectItem(index); +} + +std::string GUI::ListBox::selectedName() +{ + return basic->selectedName(); +} + +std::string GUI::ListBox::selectedValue() +{ + return basic->selectedValue(); +} + +void GUI::ListBox::clearSelectedValue() +{ + basic->clearSelectedValue(); +} + +void GUI::ListBox::registerClickHandler(void (*handler)(void *), void *ptr) +{ + basic->registerClickHandler(handler, ptr); +} + +void GUI::ListBox::registerSelectHandler(void (*handler)(void *), void *ptr) +{ + basic->registerSelectHandler(handler, ptr); +} + +void GUI::ListBox::registerValueChangeHandler(void (*handler)(void *), + void *ptr) +{ + basic->registerValueChangeHandler(handler, ptr); +} + +void GUI::ListBox::repaintEvent(GUI::RepaintEvent *e) +{ + GUI::Painter p(this); + + p.clear(); + + int w = width(); + int h = height(); + if(w == 0 || h == 0) return; + p.drawBox(0, 0, &box, w, h); +} + +void GUI::ListBox::resize(int width, int height) +{ + GUI::Widget::resize(width, height); + basic->resize(width - (box.left->width() + box.right->width()), + height - (box.top->height() + box.bottom->height())); +} diff --git a/plugingui/listbox.h b/plugingui/listbox.h new file mode 100644 index 0000000..c8677e7 --- /dev/null +++ b/plugingui/listbox.h @@ -0,0 +1,68 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * listbox.h + * + * Mon Feb 25 21:21:40 CET 2013 + * Copyright 2013 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#ifndef __DRUMGIZMO_LISTBOX_H__ +#define __DRUMGIZMO_LISTBOX_H__ + +#include +#include + +#include "widget.h" +#include "painter.h" +#include "listboxbasic.h" + +namespace GUI { + +class ListBox : public Widget { +public: + ListBox(Widget *parent); + ~ListBox(); + + void addItem(std::string name, std::string value); + void addItems(std::vector &items); + + void clear(); + bool selectItem(int index); + std::string selectedName(); + std::string selectedValue(); + void clearSelectedValue(); + + void registerSelectHandler(void (*handler)(void *), void *ptr); + void registerClickHandler(void (*handler)(void *), void *ptr); + void registerValueChangeHandler(void (*handler)(void *), void *ptr); + + virtual void repaintEvent(GUI::RepaintEvent *e); + virtual void resize(int w, int h); + +private: + ListBoxBasic *basic; + + Painter::Box box; +}; + +}; + +#endif/*__DRUMGIZMO_LISTBOX_H__*/ diff --git a/plugingui/listboxbasic.cc b/plugingui/listboxbasic.cc new file mode 100644 index 0000000..df7877d --- /dev/null +++ b/plugingui/listboxbasic.cc @@ -0,0 +1,334 @@ + +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * listboxbasic.cc + * + * Thu Apr 4 20:28:10 CEST 2013 + * Copyright 2013 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "listboxbasic.h" + +#include "painter.h" +#include "font.h" + +#include +#include + +void scrolled(void *ptr) +{ + GUI::ListBoxBasic *l = (GUI::ListBoxBasic *)ptr; + l->repaintEvent(NULL); +} + +GUI::ListBoxBasic::ListBoxBasic(GUI::Widget *parent) + : GUI::Widget(parent), scroll(this), bg_img(":widget_c.png") +{ + scroll.move(0,0); + scroll.resize(18, 100); + + scroll.registerValueChangeHandler(scrolled, this); + + padding = 4; + btn_size = 18; + + selected = -1; + marked = -1; + + clk_handler = NULL; + clk_ptr = NULL; + + sel_handler = NULL; + sel_ptr = NULL; + + valch_handler = NULL; + valch_ptr = NULL; +} + +GUI::ListBoxBasic::~ListBoxBasic() +{ +} + +void GUI::ListBoxBasic::setSelection(int index) +{ + selected = index; + if(valch_handler) valch_handler(valch_ptr); +} + +void GUI::ListBoxBasic::addItem(std::string name, std::string value) +{ + std::vector items; + GUI::ListBoxBasic::Item item; + item.name = name; + item.value = value; + items.push_back(item); + addItems(items); +} + +void GUI::ListBoxBasic::addItems(std::vector &is) +{ + // DEBUG(list, "addItems %lu\n", is.size()); + std::vector::iterator i = is.begin(); + while(i != is.end()) { + items.push_back(*i); + i++; + } + +/* + // sort + for(int x = 0; x < (int)items.size(); x++) { + for(int y = 0; y < (int)items.size(); y++) { + if(items[x].name < items[y].name) { + if(x == selected) setSelection(y); + else if(selected == y) setSelection(x); + + GUI::ListBoxBasic::Item tmp = items[x]; + items[x] = items[y]; + items[y] = tmp; + } + } + } +*/ + + if(selected == -1) setSelection((int)items.size() - 1); + setSelection(0); + + int numitems = height() / (font.textHeight() + padding); + scroll.setRange(numitems); + scroll.setMaximum(items.size()); +} + +void GUI::ListBoxBasic::clear() +{ + items.clear(); + setSelection(-1); + scroll.setValue(0); + repaintEvent(NULL); +} + +bool GUI::ListBoxBasic::selectItem(int index) +{ + if(index < 0 || index > (int)items.size() - 1) return false; + setSelection(index); + repaintEvent(NULL); + return true; +} + +std::string GUI::ListBoxBasic::selectedName() +{ + if(selected < 0 || selected > (int)items.size() - 1) return ""; + return items[selected].name; +} + +std::string GUI::ListBoxBasic::selectedValue() +{ + if(selected < 0 || selected > (int)items.size() - 1) return ""; + return items[selected].value; +} + +void GUI::ListBoxBasic::clearSelectedValue() +{ + setSelection(-1); +} + +void GUI::ListBoxBasic::registerClickHandler(void (*handler)(void *), void *ptr) +{ + this->clk_handler = handler; + this->clk_ptr = ptr; +} + +void GUI::ListBoxBasic::registerSelectHandler(void (*handler)(void *), void *ptr) +{ + this->sel_handler = handler; + this->sel_ptr = ptr; +} + +void GUI::ListBoxBasic::registerValueChangeHandler(void (*handler)(void *), + void *ptr) +{ + this->valch_handler = handler; + this->valch_ptr = ptr; +} + +void GUI::ListBoxBasic::repaintEvent(GUI::RepaintEvent *e) +{ + DEBUG(list, "repaint\n"); + GUI::Painter p(this); + + p.clear(); + + int w = width(); + int h = height(); + if(w == 0 || h == 0) return; + + p.drawImageStretched(0, 0, &bg_img, w, h); + + p.setColour(GUI::Colour(183.0/255.0, 219.0/255.0 , 255.0/255.0, 1)); + + int yoffset = padding / 2; + int skip = scroll.value(); + int numitems = height() / (font.textHeight() + padding) + 1; + for(int idx = skip; idx < (int)items.size() && idx < skip + numitems; idx++) { + GUI::ListBoxBasic::Item *i = &items[idx]; + if(idx == selected) { + p.setColour(GUI::Colour(183.0/255.0, 219.0/255.0 , 255.0/255.0, 0.5)); + p.drawFilledRectangle(0, + yoffset - (padding / 2), + width() - 1, + yoffset + (font.textHeight() + 1)); + } + + if(idx == marked) { + p.drawRectangle(0, + yoffset - (padding / 2), + width() - 1, + yoffset + (font.textHeight() + 1)); + } + + p.setColour(GUI::Colour(183.0/255.0, 219.0/255.0 , 255.0/255.0, 1)); + + p.drawText(2, yoffset + font.textHeight(), font, i->name); + yoffset += font.textHeight() + padding; + } +} + +void GUI::ListBoxBasic::scrollEvent(ScrollEvent *e) +{ + scroll.scrollEvent(e); +} + +void GUI::ListBoxBasic::keyEvent(GUI::KeyEvent *e) +{ + if(e->direction != -1) return; + + switch(e->keycode) { + case GUI::KeyEvent::KEY_UP: + { + marked--; + if(marked < 0) marked = 0; + + if(marked < scroll.value()) { + scroll.setValue(marked); + } + } + break; + case GUI::KeyEvent::KEY_DOWN: + { + // Number of items that can be displayed at a time. + int numitems = height() / (font.textHeight() + padding); + + marked++; + if(marked > ((int)items.size() - 1)) marked = (int)items.size() - 1; + + if(marked > (scroll.value() + numitems - 1)) { + scroll.setValue(marked - numitems + 1); + } + } + break; + case GUI::KeyEvent::KEY_HOME: + marked = 0; + if(marked < scroll.value()) { + scroll.setValue(marked); + } + break; + case GUI::KeyEvent::KEY_END: + { + // Number of items that can be displayed at a time. + int numitems = height() / (font.textHeight() + padding); + + marked = (int)items.size() - 1; + if(marked > (scroll.value() + numitems - 1)) { + scroll.setValue(marked - numitems + 1); + } + } + break; + case GUI::KeyEvent::KEY_CHARACTER: + if(e->text == " ") { + setSelection(marked); + // if(sel_handler) sel_handler(sel_ptr); + } + break; + case GUI::KeyEvent::KEY_ENTER: + setSelection(marked); + if(sel_handler) sel_handler(sel_ptr); + break; + default: + break; + } + + repaintEvent(NULL); +} + +void GUI::ListBoxBasic::buttonEvent(ButtonEvent *e) +{ + if(e->x > ((int)width() - btn_size) && e->y < ((int)width() - 1)) { + if(e->y > 0 && e->y < btn_size) { + if(e->direction == -1) return; + scroll.setValue(scroll.value() - 1); + return; + } + + if(e->y > ((int)height() - btn_size) && e->y < ((int)height() - 1)) { + if(e->direction == -1) return; + scroll.setValue(scroll.value() + 1); + return; + } + } + + if(e->direction == -1) { + int skip = scroll.value(); + size_t yoffset = padding / 2; + for(int idx = skip; idx < (int)items.size(); idx++) { + yoffset += font.textHeight() + padding; + if(e->y < (int)yoffset - (padding / 2)) { + setSelection(idx); + marked = selected; + if(clk_handler) clk_handler(clk_ptr); + break; + } + } + + repaintEvent(NULL); + } + + if(e->direction != -1) { + int skip = scroll.value(); + size_t yoffset = padding / 2; + for(int idx = skip; idx < (int)items.size(); idx++) { + yoffset += font.textHeight() + padding; + if(e->y < (int)yoffset - (padding / 2)) { + marked = idx; + break; + } + } + + repaintEvent(NULL); + } + + if(e->doubleclick && sel_handler) sel_handler(sel_ptr); +} + +void GUI::ListBoxBasic::resize(int w, int h) +{ + GUI::Widget::resize(w,h); + scroll.move(w - scroll.width(), 0); + scroll.resize(scroll.width(), h); +} diff --git a/plugingui/listboxbasic.h b/plugingui/listboxbasic.h new file mode 100644 index 0000000..deb4a67 --- /dev/null +++ b/plugingui/listboxbasic.h @@ -0,0 +1,101 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * listboxbasic.h + * + * Thu Apr 4 20:28:10 CEST 2013 + * Copyright 2013 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#ifndef __DRUMGIZMO_LISTBOXBASIC_H__ +#define __DRUMGIZMO_LISTBOXBASIC_H__ + +#include +#include + +#include "widget.h" +#include "font.h" +#include "painter.h" + +#include "scrollbar.h" + +namespace GUI { + +class ListBoxBasic : public Widget { +public: + class Item { + public: + std::string name; + std::string value; + }; + + ListBoxBasic(Widget *parent); + ~ListBoxBasic(); + + bool isFocusable() { return true; } + + void addItem(std::string name, std::string value); + void addItems(std::vector &items); + + void clear(); + bool selectItem(int index); + std::string selectedName(); + std::string selectedValue(); + + void clearSelectedValue(); + + void registerSelectHandler(void (*handler)(void *), void *ptr); + void registerClickHandler(void (*handler)(void *), void *ptr); + void registerValueChangeHandler(void (*handler)(void *), void *ptr); + + virtual void repaintEvent(RepaintEvent *e); + virtual void buttonEvent(ButtonEvent *e); + virtual void scrollEvent(ScrollEvent *e); + virtual void keyEvent(KeyEvent *e); + virtual void resize(int w, int h); + +private: + ScrollBar scroll; + + Image bg_img; + + void setSelection(int index); + + std::vector items; + + int selected; + int marked; + GUI::Font font; + int padding; + int btn_size; + + void (*sel_handler)(void *); + void *sel_ptr; + + void (*clk_handler)(void *); + void *clk_ptr; + + void (*valch_handler)(void *); + void *valch_ptr; +}; + +}; + +#endif/*__DRUMGIZMO_LISTBOXBASIC_H__*/ diff --git a/plugingui/listboxthin.cc b/plugingui/listboxthin.cc new file mode 100644 index 0000000..3f0fbc6 --- /dev/null +++ b/plugingui/listboxthin.cc @@ -0,0 +1,118 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * listboxthin.cc + * + * Sun Apr 7 19:39:36 CEST 2013 + * Copyright 2013 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "listboxthin.h" + +#include "painter.h" +#include "font.h" + +#include + +GUI::ListBoxThin::ListBoxThin(GUI::Widget *parent) + : GUI::Widget(parent) +{ + box.topLeft = new Image(":thinlistbox_tl.png"); + box.top = new Image(":thinlistbox_t.png"); + box.topRight = new Image(":thinlistbox_tr.png"); + box.left = new Image(":thinlistbox_l.png"); + box.right = new Image(":thinlistbox_r.png"); + box.bottomLeft = new Image(":thinlistbox_bl.png"); + box.bottom = new Image(":thinlistbox_b.png"); + box.bottomRight = new Image(":thinlistbox_br.png"); + box.center = new Image(":thinlistbox_c.png"); + + basic = new GUI::ListBoxBasic(this); + basic->move(box.left->width(), box.top->height()); +} + +GUI::ListBoxThin::~ListBoxThin() +{ +} + +void GUI::ListBoxThin::addItem(std::string name, std::string value) +{ + basic->addItem(name, value); +} + +void GUI::ListBoxThin::addItems(std::vector &items) +{ + basic->addItems(items); +} + +void GUI::ListBoxThin::clear() +{ + basic->clear(); +} + +bool GUI::ListBoxThin::selectItem(int index) +{ + return basic->selectItem(index); +} + +std::string GUI::ListBoxThin::selectedName() +{ + return basic->selectedName(); +} + +std::string GUI::ListBoxThin::selectedValue() +{ + return basic->selectedValue(); +} + +void GUI::ListBoxThin::registerClickHandler(void (*handler)(void *), void *ptr) +{ + basic->registerClickHandler(handler, ptr); +} + +void GUI::ListBoxThin::registerSelectHandler(void (*handler)(void *), void *ptr) +{ + basic->registerSelectHandler(handler, ptr); +} + +void GUI::ListBoxThin::registerValueChangeHandler(void (*handler)(void *), + void *ptr) +{ + basic->registerValueChangeHandler(handler, ptr); +} + +void GUI::ListBoxThin::repaintEvent(GUI::RepaintEvent *e) +{ + GUI::Painter p(this); + + p.clear(); + + int w = width(); + int h = height(); + if(w == 0 || h == 0) return; + p.drawBox(0, 0, &box, w, h); +} + +void GUI::ListBoxThin::resize(int width, int height) +{ + GUI::Widget::resize(width, height); + basic->resize(width - (box.left->width() + box.right->width()), + height - (box.top->height() + box.bottom->height())); +} diff --git a/plugingui/listboxthin.h b/plugingui/listboxthin.h new file mode 100644 index 0000000..9c5363a --- /dev/null +++ b/plugingui/listboxthin.h @@ -0,0 +1,67 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * listboxthin.h + * + * Sun Apr 7 19:39:35 CEST 2013 + * Copyright 2013 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#ifndef __DRUMGIZMO_LISTBOXTHIN_H__ +#define __DRUMGIZMO_LISTBOXTHIN_H__ + +#include +#include + +#include "widget.h" +#include "painter.h" +#include "listboxbasic.h" + +namespace GUI { + +class ListBoxThin : public Widget { +public: + ListBoxThin(Widget *parent); + ~ListBoxThin(); + + void addItem(std::string name, std::string value); + void addItems(std::vector &items); + + void clear(); + bool selectItem(int index); + std::string selectedName(); + std::string selectedValue(); + + void registerSelectHandler(void (*handler)(void *), void *ptr); + void registerClickHandler(void (*handler)(void *), void *ptr); + void registerValueChangeHandler(void (*handler)(void *), void *ptr); + + virtual void repaintEvent(GUI::RepaintEvent *e); + virtual void resize(int w, int h); + +private: + ListBoxBasic *basic; + + Painter::Box box; +}; + +}; + +#endif/*__DRUMGIZMO_LISTBOXTHIN_H__*/ diff --git a/plugingui/lodepng/lodepng.cpp b/plugingui/lodepng/lodepng.cpp new file mode 100644 index 0000000..e4f35d7 --- /dev/null +++ b/plugingui/lodepng/lodepng.cpp @@ -0,0 +1,6260 @@ +/* +LodePNG version 20131222 + +Copyright (c) 2005-2013 Lode Vandevenne + +This software is provided 'as-is', without any express or implied +warranty. In no event will the authors be held liable for any damages +arising from the use of this software. + +Permission is granted to anyone to use this software for any purpose, +including commercial applications, and to alter it and redistribute it +freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + + 3. This notice may not be removed or altered from any source + distribution. +*/ + +/* +The manual and changelog are in the header file "lodepng.h" +Rename this file to lodepng.cpp to use it for C++, or to lodepng.c to use it for C. +*/ + +#include "lodepng.h" + +#include +#include + +#ifdef LODEPNG_COMPILE_CPP +#include +#endif /*LODEPNG_COMPILE_CPP*/ + +#define VERSION_STRING "20131222" + +/* +This source file is built up in the following large parts. The code sections +with the "LODEPNG_COMPILE_" #defines divide this up further in an intermixed way. +-Tools for C and common code for PNG and Zlib +-C Code for Zlib (huffman, deflate, ...) +-C Code for PNG (file format chunks, adam7, PNG filters, color conversions, ...) +-The C++ wrapper around all of the above +*/ + +/*The malloc, realloc and free functions defined here with "lodepng_" in front +of the name, so that you can easily change them to others related to your +platform if needed. Everything else in the code calls these. Pass +-DLODEPNG_NO_COMPILE_ALLOCATORS to the compiler, or comment out +#define LODEPNG_COMPILE_ALLOCATORS in the header, to disable the ones here and +define them in your own project's source files without needing to change +lodepng source code. Don't forget to remove "static" if you copypaste them +from here.*/ + +#ifdef LODEPNG_COMPILE_ALLOCATORS +static void* lodepng_malloc(size_t size) +{ + return malloc(size); +} + +static void* lodepng_realloc(void* ptr, size_t new_size) +{ + return realloc(ptr, new_size); +} + +static void lodepng_free(void* ptr) +{ + free(ptr); +} +#else /*LODEPNG_COMPILE_ALLOCATORS*/ +void* lodepng_malloc(size_t size); +void* lodepng_realloc(void* ptr, size_t new_size); +void lodepng_free(void* ptr); +#endif /*LODEPNG_COMPILE_ALLOCATORS*/ + +/* ////////////////////////////////////////////////////////////////////////// */ +/* ////////////////////////////////////////////////////////////////////////// */ +/* // Tools for C, and common code for PNG and Zlib. // */ +/* ////////////////////////////////////////////////////////////////////////// */ +/* ////////////////////////////////////////////////////////////////////////// */ + +/* +Often in case of an error a value is assigned to a variable and then it breaks +out of a loop (to go to the cleanup phase of a function). This macro does that. +It makes the error handling code shorter and more readable. + +Example: if(!uivector_resizev(&frequencies_ll, 286, 0)) ERROR_BREAK(83); +*/ +#define CERROR_BREAK(errorvar, code)\ +{\ + errorvar = code;\ + break;\ +} + +/*version of CERROR_BREAK that assumes the common case where the error variable is named "error"*/ +#define ERROR_BREAK(code) CERROR_BREAK(error, code) + +/*Set error var to the error code, and return it.*/ +#define CERROR_RETURN_ERROR(errorvar, code)\ +{\ + errorvar = code;\ + return code;\ +} + +/*Try the code, if it returns error, also return the error.*/ +#define CERROR_TRY_RETURN(call)\ +{\ + unsigned error = call;\ + if(error) return error;\ +} + +/* +About uivector, ucvector and string: +-All of them wrap dynamic arrays or text strings in a similar way. +-LodePNG was originally written in C++. The vectors replace the std::vectors that were used in the C++ version. +-The string tools are made to avoid problems with compilers that declare things like strncat as deprecated. +-They're not used in the interface, only internally in this file as static functions. +-As with many other structs in this file, the init and cleanup functions serve as ctor and dtor. +*/ + +#ifdef LODEPNG_COMPILE_ZLIB +/*dynamic vector of unsigned ints*/ +typedef struct uivector +{ + unsigned* data; + size_t size; /*size in number of unsigned longs*/ + size_t allocsize; /*allocated size in bytes*/ +} uivector; + +static void uivector_cleanup(void* p) +{ + ((uivector*)p)->size = ((uivector*)p)->allocsize = 0; + lodepng_free(((uivector*)p)->data); + ((uivector*)p)->data = NULL; +} + +/*returns 1 if success, 0 if failure ==> nothing done*/ +static unsigned uivector_resize(uivector* p, size_t size) +{ + if(size * sizeof(unsigned) > p->allocsize) + { + size_t newsize = size * sizeof(unsigned) * 2; + void* data = lodepng_realloc(p->data, newsize); + if(data) + { + p->allocsize = newsize; + p->data = (unsigned*)data; + p->size = size; + } + else return 0; + } + else p->size = size; + return 1; +} + +/*resize and give all new elements the value*/ +static unsigned uivector_resizev(uivector* p, size_t size, unsigned value) +{ + size_t oldsize = p->size, i; + if(!uivector_resize(p, size)) return 0; + for(i = oldsize; i < size; i++) p->data[i] = value; + return 1; +} + +static void uivector_init(uivector* p) +{ + p->data = NULL; + p->size = p->allocsize = 0; +} + +#ifdef LODEPNG_COMPILE_ENCODER +/*returns 1 if success, 0 if failure ==> nothing done*/ +static unsigned uivector_push_back(uivector* p, unsigned c) +{ + if(!uivector_resize(p, p->size + 1)) return 0; + p->data[p->size - 1] = c; + return 1; +} + +/*copy q to p, returns 1 if success, 0 if failure ==> nothing done*/ +static unsigned uivector_copy(uivector* p, const uivector* q) +{ + size_t i; + if(!uivector_resize(p, q->size)) return 0; + for(i = 0; i < q->size; i++) p->data[i] = q->data[i]; + return 1; +} +#endif /*LODEPNG_COMPILE_ENCODER*/ +#endif /*LODEPNG_COMPILE_ZLIB*/ + +/* /////////////////////////////////////////////////////////////////////////// */ + +/*dynamic vector of unsigned chars*/ +typedef struct ucvector +{ + unsigned char* data; + size_t size; /*used size*/ + size_t allocsize; /*allocated size*/ +} ucvector; + +/*returns 1 if success, 0 if failure ==> nothing done*/ +static unsigned ucvector_resize(ucvector* p, size_t size) +{ + if(size * sizeof(unsigned char) > p->allocsize) + { + size_t newsize = size * sizeof(unsigned char) * 2; + void* data = lodepng_realloc(p->data, newsize); + if(data) + { + p->allocsize = newsize; + p->data = (unsigned char*)data; + p->size = size; + } + else return 0; /*error: not enough memory*/ + } + else p->size = size; + return 1; +} + +#ifdef LODEPNG_COMPILE_PNG + +static void ucvector_cleanup(void* p) +{ + ((ucvector*)p)->size = ((ucvector*)p)->allocsize = 0; + lodepng_free(((ucvector*)p)->data); + ((ucvector*)p)->data = NULL; +} + +static void ucvector_init(ucvector* p) +{ + p->data = NULL; + p->size = p->allocsize = 0; +} + +#ifdef LODEPNG_COMPILE_DECODER +/*resize and give all new elements the value*/ +static unsigned ucvector_resizev(ucvector* p, size_t size, unsigned char value) +{ + size_t oldsize = p->size, i; + if(!ucvector_resize(p, size)) return 0; + for(i = oldsize; i < size; i++) p->data[i] = value; + return 1; +} +#endif /*LODEPNG_COMPILE_DECODER*/ +#endif /*LODEPNG_COMPILE_PNG*/ + +#ifdef LODEPNG_COMPILE_ZLIB +/*you can both convert from vector to buffer&size and vica versa. If you use +init_buffer to take over a buffer and size, it is not needed to use cleanup*/ +static void ucvector_init_buffer(ucvector* p, unsigned char* buffer, size_t size) +{ + p->data = buffer; + p->allocsize = p->size = size; +} +#endif /*LODEPNG_COMPILE_ZLIB*/ + +#if (defined(LODEPNG_COMPILE_PNG) && defined(LODEPNG_COMPILE_ANCILLARY_CHUNKS)) || defined(LODEPNG_COMPILE_ENCODER) +/*returns 1 if success, 0 if failure ==> nothing done*/ +static unsigned ucvector_push_back(ucvector* p, unsigned char c) +{ + if(!ucvector_resize(p, p->size + 1)) return 0; + p->data[p->size - 1] = c; + return 1; +} +#endif /*defined(LODEPNG_COMPILE_PNG) || defined(LODEPNG_COMPILE_ENCODER)*/ + + +/* ////////////////////////////////////////////////////////////////////////// */ + +#ifdef LODEPNG_COMPILE_PNG +#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS +/*returns 1 if success, 0 if failure ==> nothing done*/ +static unsigned string_resize(char** out, size_t size) +{ + char* data = (char*)lodepng_realloc(*out, size + 1); + if(data) + { + data[size] = 0; /*null termination char*/ + *out = data; + } + return data != 0; +} + +/*init a {char*, size_t} pair for use as string*/ +static void string_init(char** out) +{ + *out = NULL; + string_resize(out, 0); +} + +/*free the above pair again*/ +static void string_cleanup(char** out) +{ + lodepng_free(*out); + *out = NULL; +} + +static void string_set(char** out, const char* in) +{ + size_t insize = strlen(in), i = 0; + if(string_resize(out, insize)) + { + for(i = 0; i < insize; i++) + { + (*out)[i] = in[i]; + } + } +} +#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ +#endif /*LODEPNG_COMPILE_PNG*/ + +/* ////////////////////////////////////////////////////////////////////////// */ + +unsigned lodepng_read32bitInt(const unsigned char* buffer) +{ + return (buffer[0] << 24) | (buffer[1] << 16) | (buffer[2] << 8) | buffer[3]; +} + +#if defined(LODEPNG_COMPILE_PNG) || defined(LODEPNG_COMPILE_ENCODER) +/*buffer must have at least 4 allocated bytes available*/ +static void lodepng_set32bitInt(unsigned char* buffer, unsigned value) +{ + buffer[0] = (unsigned char)((value >> 24) & 0xff); + buffer[1] = (unsigned char)((value >> 16) & 0xff); + buffer[2] = (unsigned char)((value >> 8) & 0xff); + buffer[3] = (unsigned char)((value ) & 0xff); +} +#endif /*defined(LODEPNG_COMPILE_PNG) || defined(LODEPNG_COMPILE_ENCODER)*/ + +#ifdef LODEPNG_COMPILE_ENCODER +static void lodepng_add32bitInt(ucvector* buffer, unsigned value) +{ + ucvector_resize(buffer, buffer->size + 4); /*todo: give error if resize failed*/ + lodepng_set32bitInt(&buffer->data[buffer->size - 4], value); +} +#endif /*LODEPNG_COMPILE_ENCODER*/ + +/* ////////////////////////////////////////////////////////////////////////// */ +/* / File IO / */ +/* ////////////////////////////////////////////////////////////////////////// */ + +#ifdef LODEPNG_COMPILE_DISK + +unsigned lodepng_load_file(unsigned char** out, size_t* outsize, const char* filename) +{ + FILE* file; + long size; + + /*provide some proper output values if error will happen*/ + *out = 0; + *outsize = 0; + + file = fopen(filename, "rb"); + if(!file) return 78; + + /*get filesize:*/ + fseek(file , 0 , SEEK_END); + size = ftell(file); + rewind(file); + + /*read contents of the file into the vector*/ + *outsize = 0; + *out = (unsigned char*)lodepng_malloc((size_t)size); + if(size && (*out)) (*outsize) = fread(*out, 1, (size_t)size, file); + + fclose(file); + if(!(*out) && size) return 83; /*the above malloc failed*/ + return 0; +} + +/*write given buffer to the file, overwriting the file, it doesn't append to it.*/ +unsigned lodepng_save_file(const unsigned char* buffer, size_t buffersize, const char* filename) +{ + FILE* file; + file = fopen(filename, "wb" ); + if(!file) return 79; + fwrite((char*)buffer , 1 , buffersize, file); + fclose(file); + return 0; +} + +#endif /*LODEPNG_COMPILE_DISK*/ + +/* ////////////////////////////////////////////////////////////////////////// */ +/* ////////////////////////////////////////////////////////////////////////// */ +/* // End of common code and tools. Begin of Zlib related code. // */ +/* ////////////////////////////////////////////////////////////////////////// */ +/* ////////////////////////////////////////////////////////////////////////// */ + +#ifdef LODEPNG_COMPILE_ZLIB +#ifdef LODEPNG_COMPILE_ENCODER +/*TODO: this ignores potential out of memory errors*/ +#define addBitToStream(/*size_t**/ bitpointer, /*ucvector**/ bitstream, /*unsigned char*/ bit)\ +{\ + /*add a new byte at the end*/\ + if(((*bitpointer) & 7) == 0) ucvector_push_back(bitstream, (unsigned char)0);\ + /*earlier bit of huffman code is in a lesser significant bit of an earlier byte*/\ + (bitstream->data[bitstream->size - 1]) |= (bit << ((*bitpointer) & 0x7));\ + (*bitpointer)++;\ +} + +static void addBitsToStream(size_t* bitpointer, ucvector* bitstream, unsigned value, size_t nbits) +{ + size_t i; + for(i = 0; i < nbits; i++) addBitToStream(bitpointer, bitstream, (unsigned char)((value >> i) & 1)); +} + +static void addBitsToStreamReversed(size_t* bitpointer, ucvector* bitstream, unsigned value, size_t nbits) +{ + size_t i; + for(i = 0; i < nbits; i++) addBitToStream(bitpointer, bitstream, (unsigned char)((value >> (nbits - 1 - i)) & 1)); +} +#endif /*LODEPNG_COMPILE_ENCODER*/ + +#ifdef LODEPNG_COMPILE_DECODER + +#define READBIT(bitpointer, bitstream) ((bitstream[bitpointer >> 3] >> (bitpointer & 0x7)) & (unsigned char)1) + +static unsigned char readBitFromStream(size_t* bitpointer, const unsigned char* bitstream) +{ + unsigned char result = (unsigned char)(READBIT(*bitpointer, bitstream)); + (*bitpointer)++; + return result; +} + +static unsigned readBitsFromStream(size_t* bitpointer, const unsigned char* bitstream, size_t nbits) +{ + unsigned result = 0, i; + for(i = 0; i < nbits; i++) + { + result += ((unsigned)READBIT(*bitpointer, bitstream)) << i; + (*bitpointer)++; + } + return result; +} +#endif /*LODEPNG_COMPILE_DECODER*/ + +/* ////////////////////////////////////////////////////////////////////////// */ +/* / Deflate - Huffman / */ +/* ////////////////////////////////////////////////////////////////////////// */ + +#define FIRST_LENGTH_CODE_INDEX 257 +#define LAST_LENGTH_CODE_INDEX 285 +/*256 literals, the end code, some length codes, and 2 unused codes*/ +#define NUM_DEFLATE_CODE_SYMBOLS 288 +/*the distance codes have their own symbols, 30 used, 2 unused*/ +#define NUM_DISTANCE_SYMBOLS 32 +/*the code length codes. 0-15: code lengths, 16: copy previous 3-6 times, 17: 3-10 zeros, 18: 11-138 zeros*/ +#define NUM_CODE_LENGTH_CODES 19 + +/*the base lengths represented by codes 257-285*/ +static const unsigned LENGTHBASE[29] + = {3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31, 35, 43, 51, 59, + 67, 83, 99, 115, 131, 163, 195, 227, 258}; + +/*the extra bits used by codes 257-285 (added to base length)*/ +static const unsigned LENGTHEXTRA[29] + = {0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, + 4, 4, 4, 4, 5, 5, 5, 5, 0}; + +/*the base backwards distances (the bits of distance codes appear after length codes and use their own huffman tree)*/ +static const unsigned DISTANCEBASE[30] + = {1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, 257, 385, 513, + 769, 1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577}; + +/*the extra bits of backwards distances (added to base)*/ +static const unsigned DISTANCEEXTRA[30] + = {0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, + 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13}; + +/*the order in which "code length alphabet code lengths" are stored, out of this +the huffman tree of the dynamic huffman tree lengths is generated*/ +static const unsigned CLCL_ORDER[NUM_CODE_LENGTH_CODES] + = {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15}; + +/* ////////////////////////////////////////////////////////////////////////// */ + +/* +Huffman tree struct, containing multiple representations of the tree +*/ +typedef struct HuffmanTree +{ + unsigned* tree2d; + unsigned* tree1d; + unsigned* lengths; /*the lengths of the codes of the 1d-tree*/ + unsigned maxbitlen; /*maximum number of bits a single code can get*/ + unsigned numcodes; /*number of symbols in the alphabet = number of codes*/ +} HuffmanTree; + +/*function used for debug purposes to draw the tree in ascii art with C++*/ +/* +static void HuffmanTree_draw(HuffmanTree* tree) +{ + std::cout << "tree. length: " << tree->numcodes << " maxbitlen: " << tree->maxbitlen << std::endl; + for(size_t i = 0; i < tree->tree1d.size; i++) + { + if(tree->lengths.data[i]) + std::cout << i << " " << tree->tree1d.data[i] << " " << tree->lengths.data[i] << std::endl; + } + std::cout << std::endl; +}*/ + +static void HuffmanTree_init(HuffmanTree* tree) +{ + tree->tree2d = 0; + tree->tree1d = 0; + tree->lengths = 0; +} + +static void HuffmanTree_cleanup(HuffmanTree* tree) +{ + lodepng_free(tree->tree2d); + lodepng_free(tree->tree1d); + lodepng_free(tree->lengths); +} + +/*the tree representation used by the decoder. return value is error*/ +static unsigned HuffmanTree_make2DTree(HuffmanTree* tree) +{ + unsigned nodefilled = 0; /*up to which node it is filled*/ + unsigned treepos = 0; /*position in the tree (1 of the numcodes columns)*/ + unsigned n, i; + + tree->tree2d = (unsigned*)lodepng_malloc(tree->numcodes * 2 * sizeof(unsigned)); + if(!tree->tree2d) return 83; /*alloc fail*/ + + /* + convert tree1d[] to tree2d[][]. In the 2D array, a value of 32767 means + uninited, a value >= numcodes is an address to another bit, a value < numcodes + is a code. The 2 rows are the 2 possible bit values (0 or 1), there are as + many columns as codes - 1. + A good huffmann tree has N * 2 - 1 nodes, of which N - 1 are internal nodes. + Here, the internal nodes are stored (what their 0 and 1 option point to). + There is only memory for such good tree currently, if there are more nodes + (due to too long length codes), error 55 will happen + */ + for(n = 0; n < tree->numcodes * 2; n++) + { + tree->tree2d[n] = 32767; /*32767 here means the tree2d isn't filled there yet*/ + } + + for(n = 0; n < tree->numcodes; n++) /*the codes*/ + { + for(i = 0; i < tree->lengths[n]; i++) /*the bits for this code*/ + { + unsigned char bit = (unsigned char)((tree->tree1d[n] >> (tree->lengths[n] - i - 1)) & 1); + if(treepos > tree->numcodes - 2) return 55; /*oversubscribed, see comment in lodepng_error_text*/ + if(tree->tree2d[2 * treepos + bit] == 32767) /*not yet filled in*/ + { + if(i + 1 == tree->lengths[n]) /*last bit*/ + { + tree->tree2d[2 * treepos + bit] = n; /*put the current code in it*/ + treepos = 0; + } + else + { + /*put address of the next step in here, first that address has to be found of course + (it's just nodefilled + 1)...*/ + nodefilled++; + /*addresses encoded with numcodes added to it*/ + tree->tree2d[2 * treepos + bit] = nodefilled + tree->numcodes; + treepos = nodefilled; + } + } + else treepos = tree->tree2d[2 * treepos + bit] - tree->numcodes; + } + } + + for(n = 0; n < tree->numcodes * 2; n++) + { + if(tree->tree2d[n] == 32767) tree->tree2d[n] = 0; /*remove possible remaining 32767's*/ + } + + return 0; +} + +/* +Second step for the ...makeFromLengths and ...makeFromFrequencies functions. +numcodes, lengths and maxbitlen must already be filled in correctly. return +value is error. +*/ +static unsigned HuffmanTree_makeFromLengths2(HuffmanTree* tree) +{ + uivector blcount; + uivector nextcode; + unsigned bits, n, error = 0; + + uivector_init(&blcount); + uivector_init(&nextcode); + + tree->tree1d = (unsigned*)lodepng_malloc(tree->numcodes * sizeof(unsigned)); + if(!tree->tree1d) error = 83; /*alloc fail*/ + + if(!uivector_resizev(&blcount, tree->maxbitlen + 1, 0) + || !uivector_resizev(&nextcode, tree->maxbitlen + 1, 0)) + error = 83; /*alloc fail*/ + + if(!error) + { + /*step 1: count number of instances of each code length*/ + for(bits = 0; bits < tree->numcodes; bits++) blcount.data[tree->lengths[bits]]++; + /*step 2: generate the nextcode values*/ + for(bits = 1; bits <= tree->maxbitlen; bits++) + { + nextcode.data[bits] = (nextcode.data[bits - 1] + blcount.data[bits - 1]) << 1; + } + /*step 3: generate all the codes*/ + for(n = 0; n < tree->numcodes; n++) + { + if(tree->lengths[n] != 0) tree->tree1d[n] = nextcode.data[tree->lengths[n]]++; + } + } + + uivector_cleanup(&blcount); + uivector_cleanup(&nextcode); + + if(!error) return HuffmanTree_make2DTree(tree); + else return error; +} + +/* +given the code lengths (as stored in the PNG file), generate the tree as defined +by Deflate. maxbitlen is the maximum bits that a code in the tree can have. +return value is error. +*/ +static unsigned HuffmanTree_makeFromLengths(HuffmanTree* tree, const unsigned* bitlen, + size_t numcodes, unsigned maxbitlen) +{ + unsigned i; + tree->lengths = (unsigned*)lodepng_malloc(numcodes * sizeof(unsigned)); + if(!tree->lengths) return 83; /*alloc fail*/ + for(i = 0; i < numcodes; i++) tree->lengths[i] = bitlen[i]; + tree->numcodes = (unsigned)numcodes; /*number of symbols*/ + tree->maxbitlen = maxbitlen; + return HuffmanTree_makeFromLengths2(tree); +} + +#ifdef LODEPNG_COMPILE_ENCODER + +/* +A coin, this is the terminology used for the package-merge algorithm and the +coin collector's problem. This is used to generate the huffman tree. +A coin can be multiple coins (when they're merged) +*/ +typedef struct Coin +{ + uivector symbols; + float weight; /*the sum of all weights in this coin*/ +} Coin; + +static void coin_init(Coin* c) +{ + uivector_init(&c->symbols); +} + +/*argument c is void* so that this dtor can be given as function pointer to the vector resize function*/ +static void coin_cleanup(void* c) +{ + uivector_cleanup(&((Coin*)c)->symbols); +} + +static void coin_copy(Coin* c1, const Coin* c2) +{ + c1->weight = c2->weight; + uivector_copy(&c1->symbols, &c2->symbols); +} + +static void add_coins(Coin* c1, const Coin* c2) +{ + size_t i; + for(i = 0; i < c2->symbols.size; i++) uivector_push_back(&c1->symbols, c2->symbols.data[i]); + c1->weight += c2->weight; +} + +static void init_coins(Coin* coins, size_t num) +{ + size_t i; + for(i = 0; i < num; i++) coin_init(&coins[i]); +} + +static void cleanup_coins(Coin* coins, size_t num) +{ + size_t i; + for(i = 0; i < num; i++) coin_cleanup(&coins[i]); +} + +static int coin_compare(const void* a, const void* b) { + float wa = ((const Coin*)a)->weight; + float wb = ((const Coin*)b)->weight; + return wa > wb ? 1 : wa < wb ? -1 : 0; +} + +static unsigned append_symbol_coins(Coin* coins, const unsigned* frequencies, unsigned numcodes, size_t sum) +{ + unsigned i; + unsigned j = 0; /*index of present symbols*/ + for(i = 0; i < numcodes; i++) + { + if(frequencies[i] != 0) /*only include symbols that are present*/ + { + coins[j].weight = frequencies[i] / (float)sum; + uivector_push_back(&coins[j].symbols, i); + j++; + } + } + return 0; +} + +unsigned lodepng_huffman_code_lengths(unsigned* lengths, const unsigned* frequencies, + size_t numcodes, unsigned maxbitlen) +{ + unsigned i, j; + size_t sum = 0, numpresent = 0; + unsigned error = 0; + Coin* coins; /*the coins of the currently calculated row*/ + Coin* prev_row; /*the previous row of coins*/ + unsigned numcoins; + unsigned coinmem; + + if(numcodes == 0) return 80; /*error: a tree of 0 symbols is not supposed to be made*/ + + for(i = 0; i < numcodes; i++) + { + if(frequencies[i] > 0) + { + numpresent++; + sum += frequencies[i]; + } + } + + for(i = 0; i < numcodes; i++) lengths[i] = 0; + + /*ensure at least two present symbols. There should be at least one symbol + according to RFC 1951 section 3.2.7. To decoders incorrectly require two. To + make these work as well ensure there are at least two symbols. The + Package-Merge code below also doesn't work correctly if there's only one + symbol, it'd give it the theoritical 0 bits but in practice zlib wants 1 bit*/ + if(numpresent == 0) + { + lengths[0] = lengths[1] = 1; /*note that for RFC 1951 section 3.2.7, only lengths[0] = 1 is needed*/ + } + else if(numpresent == 1) + { + for(i = 0; i < numcodes; i++) + { + if(frequencies[i]) + { + lengths[i] = 1; + lengths[i == 0 ? 1 : 0] = 1; + break; + } + } + } + else + { + /*Package-Merge algorithm represented by coin collector's problem + For every symbol, maxbitlen coins will be created*/ + + coinmem = numpresent * 2; /*max amount of coins needed with the current algo*/ + coins = (Coin*)lodepng_malloc(sizeof(Coin) * coinmem); + prev_row = (Coin*)lodepng_malloc(sizeof(Coin) * coinmem); + if(!coins || !prev_row) + { + lodepng_free(coins); + lodepng_free(prev_row); + return 83; /*alloc fail*/ + } + init_coins(coins, coinmem); + init_coins(prev_row, coinmem); + + /*first row, lowest denominator*/ + error = append_symbol_coins(coins, frequencies, numcodes, sum); + numcoins = numpresent; + qsort(coins, numcoins, sizeof(Coin), coin_compare); + if(!error) + { + unsigned numprev = 0; + for(j = 1; j <= maxbitlen && !error; j++) /*each of the remaining rows*/ + { + unsigned tempnum; + Coin* tempcoins; + /*swap prev_row and coins, and their amounts*/ + tempcoins = prev_row; prev_row = coins; coins = tempcoins; + tempnum = numprev; numprev = numcoins; numcoins = tempnum; + + cleanup_coins(coins, numcoins); + init_coins(coins, numcoins); + + numcoins = 0; + + /*fill in the merged coins of the previous row*/ + for(i = 0; i + 1 < numprev; i += 2) + { + /*merge prev_row[i] and prev_row[i + 1] into new coin*/ + Coin* coin = &coins[numcoins++]; + coin_copy(coin, &prev_row[i]); + add_coins(coin, &prev_row[i + 1]); + } + /*fill in all the original symbols again*/ + if(j < maxbitlen) + { + error = append_symbol_coins(coins + numcoins, frequencies, numcodes, sum); + numcoins += numpresent; + } + qsort(coins, numcoins, sizeof(Coin), coin_compare); + } + } + + if(!error) + { + /*calculate the lenghts of each symbol, as the amount of times a coin of each symbol is used*/ + for(i = 0; i < numpresent - 1; i++) + { + Coin* coin = &coins[i]; + for(j = 0; j < coin->symbols.size; j++) lengths[coin->symbols.data[j]]++; + } + } + + cleanup_coins(coins, coinmem); + lodepng_free(coins); + cleanup_coins(prev_row, coinmem); + lodepng_free(prev_row); + } + + return error; +} + +/*Create the Huffman tree given the symbol frequencies*/ +static unsigned HuffmanTree_makeFromFrequencies(HuffmanTree* tree, const unsigned* frequencies, + size_t mincodes, size_t numcodes, unsigned maxbitlen) +{ + unsigned error = 0; + while(!frequencies[numcodes - 1] && numcodes > mincodes) numcodes--; /*trim zeroes*/ + tree->maxbitlen = maxbitlen; + tree->numcodes = (unsigned)numcodes; /*number of symbols*/ + tree->lengths = (unsigned*)lodepng_realloc(tree->lengths, numcodes * sizeof(unsigned)); + if(!tree->lengths) return 83; /*alloc fail*/ + /*initialize all lengths to 0*/ + memset(tree->lengths, 0, numcodes * sizeof(unsigned)); + + error = lodepng_huffman_code_lengths(tree->lengths, frequencies, numcodes, maxbitlen); + if(!error) error = HuffmanTree_makeFromLengths2(tree); + return error; +} + +static unsigned HuffmanTree_getCode(const HuffmanTree* tree, unsigned index) +{ + return tree->tree1d[index]; +} + +static unsigned HuffmanTree_getLength(const HuffmanTree* tree, unsigned index) +{ + return tree->lengths[index]; +} +#endif /*LODEPNG_COMPILE_ENCODER*/ + +/*get the literal and length code tree of a deflated block with fixed tree, as per the deflate specification*/ +static unsigned generateFixedLitLenTree(HuffmanTree* tree) +{ + unsigned i, error = 0; + unsigned* bitlen = (unsigned*)lodepng_malloc(NUM_DEFLATE_CODE_SYMBOLS * sizeof(unsigned)); + if(!bitlen) return 83; /*alloc fail*/ + + /*288 possible codes: 0-255=literals, 256=endcode, 257-285=lengthcodes, 286-287=unused*/ + for(i = 0; i <= 143; i++) bitlen[i] = 8; + for(i = 144; i <= 255; i++) bitlen[i] = 9; + for(i = 256; i <= 279; i++) bitlen[i] = 7; + for(i = 280; i <= 287; i++) bitlen[i] = 8; + + error = HuffmanTree_makeFromLengths(tree, bitlen, NUM_DEFLATE_CODE_SYMBOLS, 15); + + lodepng_free(bitlen); + return error; +} + +/*get the distance code tree of a deflated block with fixed tree, as specified in the deflate specification*/ +static unsigned generateFixedDistanceTree(HuffmanTree* tree) +{ + unsigned i, error = 0; + unsigned* bitlen = (unsigned*)lodepng_malloc(NUM_DISTANCE_SYMBOLS * sizeof(unsigned)); + if(!bitlen) return 83; /*alloc fail*/ + + /*there are 32 distance codes, but 30-31 are unused*/ + for(i = 0; i < NUM_DISTANCE_SYMBOLS; i++) bitlen[i] = 5; + error = HuffmanTree_makeFromLengths(tree, bitlen, NUM_DISTANCE_SYMBOLS, 15); + + lodepng_free(bitlen); + return error; +} + +#ifdef LODEPNG_COMPILE_DECODER + +/* +returns the code, or (unsigned)(-1) if error happened +inbitlength is the length of the complete buffer, in bits (so its byte length times 8) +*/ +static unsigned huffmanDecodeSymbol(const unsigned char* in, size_t* bp, + const HuffmanTree* codetree, size_t inbitlength) +{ + unsigned treepos = 0, ct; + for(;;) + { + if(*bp >= inbitlength) return (unsigned)(-1); /*error: end of input memory reached without endcode*/ + /* + decode the symbol from the tree. The "readBitFromStream" code is inlined in + the expression below because this is the biggest bottleneck while decoding + */ + ct = codetree->tree2d[(treepos << 1) + READBIT(*bp, in)]; + (*bp)++; + if(ct < codetree->numcodes) return ct; /*the symbol is decoded, return it*/ + else treepos = ct - codetree->numcodes; /*symbol not yet decoded, instead move tree position*/ + + if(treepos >= codetree->numcodes) return (unsigned)(-1); /*error: it appeared outside the codetree*/ + } +} +#endif /*LODEPNG_COMPILE_DECODER*/ + +#ifdef LODEPNG_COMPILE_DECODER + +/* ////////////////////////////////////////////////////////////////////////// */ +/* / Inflator (Decompressor) / */ +/* ////////////////////////////////////////////////////////////////////////// */ + +/*get the tree of a deflated block with fixed tree, as specified in the deflate specification*/ +static void getTreeInflateFixed(HuffmanTree* tree_ll, HuffmanTree* tree_d) +{ + /*TODO: check for out of memory errors*/ + generateFixedLitLenTree(tree_ll); + generateFixedDistanceTree(tree_d); +} + +/*get the tree of a deflated block with dynamic tree, the tree itself is also Huffman compressed with a known tree*/ +static unsigned getTreeInflateDynamic(HuffmanTree* tree_ll, HuffmanTree* tree_d, + const unsigned char* in, size_t* bp, size_t inlength) +{ + /*make sure that length values that aren't filled in will be 0, or a wrong tree will be generated*/ + unsigned error = 0; + unsigned n, HLIT, HDIST, HCLEN, i; + size_t inbitlength = inlength * 8; + + /*see comments in deflateDynamic for explanation of the context and these variables, it is analogous*/ + unsigned* bitlen_ll = 0; /*lit,len code lengths*/ + unsigned* bitlen_d = 0; /*dist code lengths*/ + /*code length code lengths ("clcl"), the bit lengths of the huffman tree used to compress bitlen_ll and bitlen_d*/ + unsigned* bitlen_cl = 0; + HuffmanTree tree_cl; /*the code tree for code length codes (the huffman tree for compressed huffman trees)*/ + + if((*bp) >> 3 >= inlength - 2) return 49; /*error: the bit pointer is or will go past the memory*/ + + /*number of literal/length codes + 257. Unlike the spec, the value 257 is added to it here already*/ + HLIT = readBitsFromStream(bp, in, 5) + 257; + /*number of distance codes. Unlike the spec, the value 1 is added to it here already*/ + HDIST = readBitsFromStream(bp, in, 5) + 1; + /*number of code length codes. Unlike the spec, the value 4 is added to it here already*/ + HCLEN = readBitsFromStream(bp, in, 4) + 4; + + HuffmanTree_init(&tree_cl); + + while(!error) + { + /*read the code length codes out of 3 * (amount of code length codes) bits*/ + + bitlen_cl = (unsigned*)lodepng_malloc(NUM_CODE_LENGTH_CODES * sizeof(unsigned)); + if(!bitlen_cl) ERROR_BREAK(83 /*alloc fail*/); + + for(i = 0; i < NUM_CODE_LENGTH_CODES; i++) + { + if(i < HCLEN) bitlen_cl[CLCL_ORDER[i]] = readBitsFromStream(bp, in, 3); + else bitlen_cl[CLCL_ORDER[i]] = 0; /*if not, it must stay 0*/ + } + + error = HuffmanTree_makeFromLengths(&tree_cl, bitlen_cl, NUM_CODE_LENGTH_CODES, 7); + if(error) break; + + /*now we can use this tree to read the lengths for the tree that this function will return*/ + bitlen_ll = (unsigned*)lodepng_malloc(NUM_DEFLATE_CODE_SYMBOLS * sizeof(unsigned)); + bitlen_d = (unsigned*)lodepng_malloc(NUM_DISTANCE_SYMBOLS * sizeof(unsigned)); + if(!bitlen_ll || !bitlen_d) ERROR_BREAK(83 /*alloc fail*/); + for(i = 0; i < NUM_DEFLATE_CODE_SYMBOLS; i++) bitlen_ll[i] = 0; + for(i = 0; i < NUM_DISTANCE_SYMBOLS; i++) bitlen_d[i] = 0; + + /*i is the current symbol we're reading in the part that contains the code lengths of lit/len and dist codes*/ + i = 0; + while(i < HLIT + HDIST) + { + unsigned code = huffmanDecodeSymbol(in, bp, &tree_cl, inbitlength); + if(code <= 15) /*a length code*/ + { + if(i < HLIT) bitlen_ll[i] = code; + else bitlen_d[i - HLIT] = code; + i++; + } + else if(code == 16) /*repeat previous*/ + { + unsigned replength = 3; /*read in the 2 bits that indicate repeat length (3-6)*/ + unsigned value; /*set value to the previous code*/ + + if(*bp >= inbitlength) ERROR_BREAK(50); /*error, bit pointer jumps past memory*/ + if (i == 0) ERROR_BREAK(54); /*can't repeat previous if i is 0*/ + + replength += readBitsFromStream(bp, in, 2); + + if(i < HLIT + 1) value = bitlen_ll[i - 1]; + else value = bitlen_d[i - HLIT - 1]; + /*repeat this value in the next lengths*/ + for(n = 0; n < replength; n++) + { + if(i >= HLIT + HDIST) ERROR_BREAK(13); /*error: i is larger than the amount of codes*/ + if(i < HLIT) bitlen_ll[i] = value; + else bitlen_d[i - HLIT] = value; + i++; + } + } + else if(code == 17) /*repeat "0" 3-10 times*/ + { + unsigned replength = 3; /*read in the bits that indicate repeat length*/ + if(*bp >= inbitlength) ERROR_BREAK(50); /*error, bit pointer jumps past memory*/ + + replength += readBitsFromStream(bp, in, 3); + + /*repeat this value in the next lengths*/ + for(n = 0; n < replength; n++) + { + if(i >= HLIT + HDIST) ERROR_BREAK(14); /*error: i is larger than the amount of codes*/ + + if(i < HLIT) bitlen_ll[i] = 0; + else bitlen_d[i - HLIT] = 0; + i++; + } + } + else if(code == 18) /*repeat "0" 11-138 times*/ + { + unsigned replength = 11; /*read in the bits that indicate repeat length*/ + if(*bp >= inbitlength) ERROR_BREAK(50); /*error, bit pointer jumps past memory*/ + + replength += readBitsFromStream(bp, in, 7); + + /*repeat this value in the next lengths*/ + for(n = 0; n < replength; n++) + { + if(i >= HLIT + HDIST) ERROR_BREAK(15); /*error: i is larger than the amount of codes*/ + + if(i < HLIT) bitlen_ll[i] = 0; + else bitlen_d[i - HLIT] = 0; + i++; + } + } + else /*if(code == (unsigned)(-1))*/ /*huffmanDecodeSymbol returns (unsigned)(-1) in case of error*/ + { + if(code == (unsigned)(-1)) + { + /*return error code 10 or 11 depending on the situation that happened in huffmanDecodeSymbol + (10=no endcode, 11=wrong jump outside of tree)*/ + error = (*bp) > inbitlength ? 10 : 11; + } + else error = 16; /*unexisting code, this can never happen*/ + break; + } + } + if(error) break; + + if(bitlen_ll[256] == 0) ERROR_BREAK(64); /*the length of the end code 256 must be larger than 0*/ + + /*now we've finally got HLIT and HDIST, so generate the code trees, and the function is done*/ + error = HuffmanTree_makeFromLengths(tree_ll, bitlen_ll, NUM_DEFLATE_CODE_SYMBOLS, 15); + if(error) break; + error = HuffmanTree_makeFromLengths(tree_d, bitlen_d, NUM_DISTANCE_SYMBOLS, 15); + + break; /*end of error-while*/ + } + + lodepng_free(bitlen_cl); + lodepng_free(bitlen_ll); + lodepng_free(bitlen_d); + HuffmanTree_cleanup(&tree_cl); + + return error; +} + +/*inflate a block with dynamic of fixed Huffman tree*/ +static unsigned inflateHuffmanBlock(ucvector* out, const unsigned char* in, size_t* bp, + size_t* pos, size_t inlength, unsigned btype) +{ + unsigned error = 0; + HuffmanTree tree_ll; /*the huffman tree for literal and length codes*/ + HuffmanTree tree_d; /*the huffman tree for distance codes*/ + size_t inbitlength = inlength * 8; + + HuffmanTree_init(&tree_ll); + HuffmanTree_init(&tree_d); + + if(btype == 1) getTreeInflateFixed(&tree_ll, &tree_d); + else if(btype == 2) error = getTreeInflateDynamic(&tree_ll, &tree_d, in, bp, inlength); + + while(!error) /*decode all symbols until end reached, breaks at end code*/ + { + /*code_ll is literal, length or end code*/ + unsigned code_ll = huffmanDecodeSymbol(in, bp, &tree_ll, inbitlength); + if(code_ll <= 255) /*literal symbol*/ + { + if((*pos) >= out->size) + { + /*reserve more room at once*/ + if(!ucvector_resize(out, ((*pos) + 1) * 2)) ERROR_BREAK(83 /*alloc fail*/); + } + out->data[(*pos)] = (unsigned char)(code_ll); + (*pos)++; + } + else if(code_ll >= FIRST_LENGTH_CODE_INDEX && code_ll <= LAST_LENGTH_CODE_INDEX) /*length code*/ + { + unsigned code_d, distance; + unsigned numextrabits_l, numextrabits_d; /*extra bits for length and distance*/ + size_t start, forward, backward, length; + + /*part 1: get length base*/ + length = LENGTHBASE[code_ll - FIRST_LENGTH_CODE_INDEX]; + + /*part 2: get extra bits and add the value of that to length*/ + numextrabits_l = LENGTHEXTRA[code_ll - FIRST_LENGTH_CODE_INDEX]; + if(*bp >= inbitlength) ERROR_BREAK(51); /*error, bit pointer will jump past memory*/ + length += readBitsFromStream(bp, in, numextrabits_l); + + /*part 3: get distance code*/ + code_d = huffmanDecodeSymbol(in, bp, &tree_d, inbitlength); + if(code_d > 29) + { + if(code_ll == (unsigned)(-1)) /*huffmanDecodeSymbol returns (unsigned)(-1) in case of error*/ + { + /*return error code 10 or 11 depending on the situation that happened in huffmanDecodeSymbol + (10=no endcode, 11=wrong jump outside of tree)*/ + error = (*bp) > inlength * 8 ? 10 : 11; + } + else error = 18; /*error: invalid distance code (30-31 are never used)*/ + break; + } + distance = DISTANCEBASE[code_d]; + + /*part 4: get extra bits from distance*/ + numextrabits_d = DISTANCEEXTRA[code_d]; + if(*bp >= inbitlength) ERROR_BREAK(51); /*error, bit pointer will jump past memory*/ + + distance += readBitsFromStream(bp, in, numextrabits_d); + + /*part 5: fill in all the out[n] values based on the length and dist*/ + start = (*pos); + if(distance > start) ERROR_BREAK(52); /*too long backward distance*/ + backward = start - distance; + if((*pos) + length >= out->size) + { + /*reserve more room at once*/ + if(!ucvector_resize(out, ((*pos) + length) * 2)) ERROR_BREAK(83 /*alloc fail*/); + } + + for(forward = 0; forward < length; forward++) + { + out->data[(*pos)] = out->data[backward]; + (*pos)++; + backward++; + if(backward >= start) backward = start - distance; + } + } + else if(code_ll == 256) + { + break; /*end code, break the loop*/ + } + else /*if(code == (unsigned)(-1))*/ /*huffmanDecodeSymbol returns (unsigned)(-1) in case of error*/ + { + /*return error code 10 or 11 depending on the situation that happened in huffmanDecodeSymbol + (10=no endcode, 11=wrong jump outside of tree)*/ + error = (*bp) > inlength * 8 ? 10 : 11; + break; + } + } + + HuffmanTree_cleanup(&tree_ll); + HuffmanTree_cleanup(&tree_d); + + return error; +} + +static unsigned inflateNoCompression(ucvector* out, const unsigned char* in, size_t* bp, size_t* pos, size_t inlength) +{ + /*go to first boundary of byte*/ + size_t p; + unsigned LEN, NLEN, n, error = 0; + while(((*bp) & 0x7) != 0) (*bp)++; + p = (*bp) / 8; /*byte position*/ + + /*read LEN (2 bytes) and NLEN (2 bytes)*/ + if(p >= inlength - 4) return 52; /*error, bit pointer will jump past memory*/ + LEN = in[p] + 256 * in[p + 1]; p += 2; + NLEN = in[p] + 256 * in[p + 1]; p += 2; + + /*check if 16-bit NLEN is really the one's complement of LEN*/ + if(LEN + NLEN != 65535) return 21; /*error: NLEN is not one's complement of LEN*/ + + if((*pos) + LEN >= out->size) + { + if(!ucvector_resize(out, (*pos) + LEN)) return 83; /*alloc fail*/ + } + + /*read the literal data: LEN bytes are now stored in the out buffer*/ + if(p + LEN > inlength) return 23; /*error: reading outside of in buffer*/ + for(n = 0; n < LEN; n++) out->data[(*pos)++] = in[p++]; + + (*bp) = p * 8; + + return error; +} + +static unsigned lodepng_inflatev(ucvector* out, + const unsigned char* in, size_t insize, + const LodePNGDecompressSettings* settings) +{ + /*bit pointer in the "in" data, current byte is bp >> 3, current bit is bp & 0x7 (from lsb to msb of the byte)*/ + size_t bp = 0; + unsigned BFINAL = 0; + size_t pos = 0; /*byte position in the out buffer*/ + + unsigned error = 0; + + (void)settings; + + while(!BFINAL) + { + unsigned BTYPE; + if(bp + 2 >= insize * 8) return 52; /*error, bit pointer will jump past memory*/ + BFINAL = readBitFromStream(&bp, in); + BTYPE = 1 * readBitFromStream(&bp, in); + BTYPE += 2 * readBitFromStream(&bp, in); + + if(BTYPE == 3) return 20; /*error: invalid BTYPE*/ + else if(BTYPE == 0) error = inflateNoCompression(out, in, &bp, &pos, insize); /*no compression*/ + else error = inflateHuffmanBlock(out, in, &bp, &pos, insize, BTYPE); /*compression, BTYPE 01 or 10*/ + + if(error) return error; + } + + /*Only now we know the true size of out, resize it to that*/ + if(!ucvector_resize(out, pos)) error = 83; /*alloc fail*/ + + return error; +} + +unsigned lodepng_inflate(unsigned char** out, size_t* outsize, + const unsigned char* in, size_t insize, + const LodePNGDecompressSettings* settings) +{ + unsigned error; + ucvector v; + ucvector_init_buffer(&v, *out, *outsize); + error = lodepng_inflatev(&v, in, insize, settings); + *out = v.data; + *outsize = v.size; + return error; +} + +static unsigned inflate(unsigned char** out, size_t* outsize, + const unsigned char* in, size_t insize, + const LodePNGDecompressSettings* settings) +{ + if(settings->custom_inflate) + { + return settings->custom_inflate(out, outsize, in, insize, settings); + } + else + { + return lodepng_inflate(out, outsize, in, insize, settings); + } +} + +#endif /*LODEPNG_COMPILE_DECODER*/ + +#ifdef LODEPNG_COMPILE_ENCODER + +/* ////////////////////////////////////////////////////////////////////////// */ +/* / Deflator (Compressor) / */ +/* ////////////////////////////////////////////////////////////////////////// */ + +static const size_t MAX_SUPPORTED_DEFLATE_LENGTH = 258; + +/*bitlen is the size in bits of the code*/ +static void addHuffmanSymbol(size_t* bp, ucvector* compressed, unsigned code, unsigned bitlen) +{ + addBitsToStreamReversed(bp, compressed, code, bitlen); +} + +/*search the index in the array, that has the largest value smaller than or equal to the given value, +given array must be sorted (if no value is smaller, it returns the size of the given array)*/ +static size_t searchCodeIndex(const unsigned* array, size_t array_size, size_t value) +{ + /*linear search implementation*/ + /*for(size_t i = 1; i < array_size; i++) if(array[i] > value) return i - 1; + return array_size - 1;*/ + + /*binary search implementation (not that much faster) (precondition: array_size > 0)*/ + size_t left = 1; + size_t right = array_size - 1; + while(left <= right) + { + size_t mid = (left + right) / 2; + if(array[mid] <= value) left = mid + 1; /*the value to find is more to the right*/ + else if(array[mid - 1] > value) right = mid - 1; /*the value to find is more to the left*/ + else return mid - 1; + } + return array_size - 1; +} + +static void addLengthDistance(uivector* values, size_t length, size_t distance) +{ + /*values in encoded vector are those used by deflate: + 0-255: literal bytes + 256: end + 257-285: length/distance pair (length code, followed by extra length bits, distance code, extra distance bits) + 286-287: invalid*/ + + unsigned length_code = (unsigned)searchCodeIndex(LENGTHBASE, 29, length); + unsigned extra_length = (unsigned)(length - LENGTHBASE[length_code]); + unsigned dist_code = (unsigned)searchCodeIndex(DISTANCEBASE, 30, distance); + unsigned extra_distance = (unsigned)(distance - DISTANCEBASE[dist_code]); + + uivector_push_back(values, length_code + FIRST_LENGTH_CODE_INDEX); + uivector_push_back(values, extra_length); + uivector_push_back(values, dist_code); + uivector_push_back(values, extra_distance); +} + +static const unsigned HASH_BIT_MASK = 65535; +static const unsigned HASH_NUM_VALUES = 65536; +static const unsigned HASH_NUM_CHARACTERS = 3; +static const unsigned HASH_SHIFT = 2; +/* +The HASH_NUM_CHARACTERS value is used to make encoding faster by using longer +sequences to generate a hash value from the stream bytes. Setting it to 3 +gives exactly the same compression as the brute force method, since deflate's +run length encoding starts with lengths of 3. Setting it to higher values, +like 6, can make the encoding faster (not always though!), but will cause the +encoding to miss any length between 3 and this value, so that the compression +may be worse (but this can vary too depending on the image, sometimes it is +even a bit better instead). +The HASH_NUM_VALUES is the amount of unique possible hash values that +combinations of bytes can give, the higher it is the more memory is needed, but +if it's too low the advantage of hashing is gone. +*/ + +typedef struct Hash +{ + int* head; /*hash value to head circular pos*/ + int* val; /*circular pos to hash value*/ + /*circular pos to prev circular pos*/ + unsigned short* chain; + unsigned short* zeros; +} Hash; + +static unsigned hash_init(Hash* hash, unsigned windowsize) +{ + unsigned i; + hash->head = (int*)lodepng_malloc(sizeof(int) * HASH_NUM_VALUES); + hash->val = (int*)lodepng_malloc(sizeof(int) * windowsize); + hash->chain = (unsigned short*)lodepng_malloc(sizeof(unsigned short) * windowsize); + hash->zeros = (unsigned short*)lodepng_malloc(sizeof(unsigned short) * windowsize); + + if(!hash->head || !hash->val || !hash->chain || !hash->zeros) return 83; /*alloc fail*/ + + /*initialize hash table*/ + for(i = 0; i < HASH_NUM_VALUES; i++) hash->head[i] = -1; + for(i = 0; i < windowsize; i++) hash->val[i] = -1; + for(i = 0; i < windowsize; i++) hash->chain[i] = i; /*same value as index indicates uninitialized*/ + + return 0; +} + +static void hash_cleanup(Hash* hash) +{ + lodepng_free(hash->head); + lodepng_free(hash->val); + lodepng_free(hash->chain); + lodepng_free(hash->zeros); +} + +static unsigned getHash(const unsigned char* data, size_t size, size_t pos) +{ + unsigned result = 0; + if (HASH_NUM_CHARACTERS == 3 && pos + 2 < size) { + result ^= (data[pos + 0] << (0 * HASH_SHIFT)); + result ^= (data[pos + 1] << (1 * HASH_SHIFT)); + result ^= (data[pos + 2] << (2 * HASH_SHIFT)); + } else { + size_t amount, i; + if(pos >= size) return 0; + amount = HASH_NUM_CHARACTERS; + if(pos + amount >= size) amount = size - pos; + for(i = 0; i < amount; i++) result ^= (data[pos + i] << (i * HASH_SHIFT)); + } + return result & HASH_BIT_MASK; +} + +static unsigned countZeros(const unsigned char* data, size_t size, size_t pos) +{ + const unsigned char* start = data + pos; + const unsigned char* end = start + MAX_SUPPORTED_DEFLATE_LENGTH; + if(end > data + size) end = data + size; + data = start; + while (data != end && *data == 0) data++; + /*subtracting two addresses returned as 32-bit number (max value is MAX_SUPPORTED_DEFLATE_LENGTH)*/ + return (unsigned)(data - start); +} + +/*wpos = pos & (windowsize - 1)*/ +static void updateHashChain(Hash* hash, size_t wpos, int hashval) +{ + hash->val[wpos] = hashval; + if(hash->head[hashval] != -1) hash->chain[wpos] = hash->head[hashval]; + hash->head[hashval] = wpos; +} + +/* +LZ77-encode the data. Return value is error code. The input are raw bytes, the output +is in the form of unsigned integers with codes representing for example literal bytes, or +length/distance pairs. +It uses a hash table technique to let it encode faster. When doing LZ77 encoding, a +sliding window (of windowsize) is used, and all past bytes in that window can be used as +the "dictionary". A brute force search through all possible distances would be slow, and +this hash technique is one out of several ways to speed this up. +*/ +static unsigned encodeLZ77(uivector* out, Hash* hash, + const unsigned char* in, size_t inpos, size_t insize, unsigned windowsize, + unsigned minmatch, unsigned nicematch, unsigned lazymatching) +{ + unsigned pos, i, error = 0; + /*for large window lengths, assume the user wants no compression loss. Otherwise, max hash chain length speedup.*/ + unsigned maxchainlength = windowsize >= 8192 ? windowsize : windowsize / 8; + unsigned maxlazymatch = windowsize >= 8192 ? MAX_SUPPORTED_DEFLATE_LENGTH : 64; + + unsigned usezeros = 1; /*not sure if setting it to false for windowsize < 8192 is better or worse*/ + unsigned numzeros = 0; + + unsigned offset; /*the offset represents the distance in LZ77 terminology*/ + unsigned length; + unsigned lazy = 0; + unsigned lazylength = 0, lazyoffset = 0; + unsigned hashval; + unsigned current_offset, current_length; + const unsigned char *lastptr, *foreptr, *backptr; + unsigned hashpos, prevpos; + + if(windowsize <= 0 || windowsize > 32768) return 60; /*error: windowsize smaller/larger than allowed*/ + if((windowsize & (windowsize - 1)) != 0) return 90; /*error: must be power of two*/ + + if(nicematch > MAX_SUPPORTED_DEFLATE_LENGTH) nicematch = MAX_SUPPORTED_DEFLATE_LENGTH; + + for(pos = inpos; pos < insize; pos++) + { + size_t wpos = pos & (windowsize - 1); /*position for in 'circular' hash buffers*/ + unsigned chainlength = 0; + + hashval = getHash(in, insize, pos); + updateHashChain(hash, wpos, hashval); + + if(usezeros && hashval == 0) + { + if (numzeros == 0) numzeros = countZeros(in, insize, pos); + else if (pos + numzeros >= insize || in[pos + numzeros - 1] != 0) numzeros--; + hash->zeros[wpos] = numzeros; + } + else + { + numzeros = 0; + } + + /*the length and offset found for the current position*/ + length = 0; + offset = 0; + + prevpos = hash->head[hashval]; + hashpos = hash->chain[prevpos]; + + lastptr = &in[insize < pos + MAX_SUPPORTED_DEFLATE_LENGTH ? insize : pos + MAX_SUPPORTED_DEFLATE_LENGTH]; + + /*search for the longest string*/ + for(;;) + { + /*stop when went completely around the circular buffer*/ + if(prevpos < wpos && hashpos > prevpos && hashpos <= wpos) break; + if(prevpos > wpos && (hashpos <= wpos || hashpos > prevpos)) break; + if(chainlength++ >= maxchainlength) break; + + current_offset = hashpos <= wpos ? wpos - hashpos : wpos - hashpos + windowsize; + if(current_offset > 0) + { + /*test the next characters*/ + foreptr = &in[pos]; + backptr = &in[pos - current_offset]; + + /*common case in PNGs is lots of zeros. Quickly skip over them as a speedup*/ + if(usezeros && hashval == 0 && hash->val[hashpos] == 0 /*hashval[hashpos] may be out of date*/) + { + unsigned skip = hash->zeros[hashpos]; + if(skip > numzeros) skip = numzeros; + backptr += skip; + foreptr += skip; + } + + while(foreptr != lastptr && *backptr == *foreptr) /*maximum supported length by deflate is max length*/ + { + ++backptr; + ++foreptr; + } + current_length = (unsigned)(foreptr - &in[pos]); + + if(current_length > length) + { + length = current_length; /*the longest length*/ + offset = current_offset; /*the offset that is related to this longest length*/ + /*jump out once a length of max length is found (speed gain). This also jumps + out if length is MAX_SUPPORTED_DEFLATE_LENGTH*/ + if(current_length >= nicematch) break; + } + } + + if(hashpos == hash->chain[hashpos]) break; + + prevpos = hashpos; + hashpos = hash->chain[hashpos]; + } + + if(lazymatching) + { + if(!lazy && length >= 3 && length <= maxlazymatch && length < MAX_SUPPORTED_DEFLATE_LENGTH) + { + lazy = 1; + lazylength = length; + lazyoffset = offset; + continue; /*try the next byte*/ + } + if(lazy) + { + lazy = 0; + if(pos == 0) ERROR_BREAK(81); + if(length > lazylength + 1) + { + /*push the previous character as literal*/ + if(!uivector_push_back(out, in[pos - 1])) ERROR_BREAK(83 /*alloc fail*/); + } + else + { + length = lazylength; + offset = lazyoffset; + hash->head[hashval] = -1; /*the same hashchain update will be done, this ensures no wrong alteration*/ + pos--; + } + } + } + if(length >= 3 && offset > windowsize) ERROR_BREAK(86 /*too big (or overflown negative) offset*/); + + /*encode it as length/distance pair or literal value*/ + if(length < 3) /*only lengths of 3 or higher are supported as length/distance pair*/ + { + if(!uivector_push_back(out, in[pos])) ERROR_BREAK(83 /*alloc fail*/); + } + else if(length < minmatch || (length == 3 && offset > 4096)) + { + /*compensate for the fact that longer offsets have more extra bits, a + length of only 3 may be not worth it then*/ + if(!uivector_push_back(out, in[pos])) ERROR_BREAK(83 /*alloc fail*/); + } + else + { + addLengthDistance(out, length, offset); + for(i = 1; i < length; i++) + { + pos++; + wpos = pos & (windowsize - 1); + hashval = getHash(in, insize, pos); + updateHashChain(hash, wpos, hashval); + if(usezeros && hashval == 0) + { + if (numzeros == 0) numzeros = countZeros(in, insize, pos); + else if (pos + numzeros >= insize || in[pos + numzeros - 1] != 0) numzeros--; + hash->zeros[wpos] = numzeros; + } + else + { + numzeros = 0; + } + } + } + } /*end of the loop through each character of input*/ + + return error; +} + +/* /////////////////////////////////////////////////////////////////////////// */ + +static unsigned deflateNoCompression(ucvector* out, const unsigned char* data, size_t datasize) +{ + /*non compressed deflate block data: 1 bit BFINAL,2 bits BTYPE,(5 bits): it jumps to start of next byte, + 2 bytes LEN, 2 bytes NLEN, LEN bytes literal DATA*/ + + size_t i, j, numdeflateblocks = (datasize + 65534) / 65535; + unsigned datapos = 0; + for(i = 0; i < numdeflateblocks; i++) + { + unsigned BFINAL, BTYPE, LEN, NLEN; + unsigned char firstbyte; + + BFINAL = (i == numdeflateblocks - 1); + BTYPE = 0; + + firstbyte = (unsigned char)(BFINAL + ((BTYPE & 1) << 1) + ((BTYPE & 2) << 1)); + ucvector_push_back(out, firstbyte); + + LEN = 65535; + if(datasize - datapos < 65535) LEN = (unsigned)datasize - datapos; + NLEN = 65535 - LEN; + + ucvector_push_back(out, (unsigned char)(LEN % 256)); + ucvector_push_back(out, (unsigned char)(LEN / 256)); + ucvector_push_back(out, (unsigned char)(NLEN % 256)); + ucvector_push_back(out, (unsigned char)(NLEN / 256)); + + /*Decompressed data*/ + for(j = 0; j < 65535 && datapos < datasize; j++) + { + ucvector_push_back(out, data[datapos++]); + } + } + + return 0; +} + +/* +write the lz77-encoded data, which has lit, len and dist codes, to compressed stream using huffman trees. +tree_ll: the tree for lit and len codes. +tree_d: the tree for distance codes. +*/ +static void writeLZ77data(size_t* bp, ucvector* out, const uivector* lz77_encoded, + const HuffmanTree* tree_ll, const HuffmanTree* tree_d) +{ + size_t i = 0; + for(i = 0; i < lz77_encoded->size; i++) + { + unsigned val = lz77_encoded->data[i]; + addHuffmanSymbol(bp, out, HuffmanTree_getCode(tree_ll, val), HuffmanTree_getLength(tree_ll, val)); + if(val > 256) /*for a length code, 3 more things have to be added*/ + { + unsigned length_index = val - FIRST_LENGTH_CODE_INDEX; + unsigned n_length_extra_bits = LENGTHEXTRA[length_index]; + unsigned length_extra_bits = lz77_encoded->data[++i]; + + unsigned distance_code = lz77_encoded->data[++i]; + + unsigned distance_index = distance_code; + unsigned n_distance_extra_bits = DISTANCEEXTRA[distance_index]; + unsigned distance_extra_bits = lz77_encoded->data[++i]; + + addBitsToStream(bp, out, length_extra_bits, n_length_extra_bits); + addHuffmanSymbol(bp, out, HuffmanTree_getCode(tree_d, distance_code), + HuffmanTree_getLength(tree_d, distance_code)); + addBitsToStream(bp, out, distance_extra_bits, n_distance_extra_bits); + } + } +} + +/*Deflate for a block of type "dynamic", that is, with freely, optimally, created huffman trees*/ +static unsigned deflateDynamic(ucvector* out, size_t* bp, Hash* hash, + const unsigned char* data, size_t datapos, size_t dataend, + const LodePNGCompressSettings* settings, int final) +{ + unsigned error = 0; + + /* + A block is compressed as follows: The PNG data is lz77 encoded, resulting in + literal bytes and length/distance pairs. This is then huffman compressed with + two huffman trees. One huffman tree is used for the lit and len values ("ll"), + another huffman tree is used for the dist values ("d"). These two trees are + stored using their code lengths, and to compress even more these code lengths + are also run-length encoded and huffman compressed. This gives a huffman tree + of code lengths "cl". The code lenghts used to describe this third tree are + the code length code lengths ("clcl"). + */ + + /*The lz77 encoded data, represented with integers since there will also be length and distance codes in it*/ + uivector lz77_encoded; + HuffmanTree tree_ll; /*tree for lit,len values*/ + HuffmanTree tree_d; /*tree for distance codes*/ + HuffmanTree tree_cl; /*tree for encoding the code lengths representing tree_ll and tree_d*/ + uivector frequencies_ll; /*frequency of lit,len codes*/ + uivector frequencies_d; /*frequency of dist codes*/ + uivector frequencies_cl; /*frequency of code length codes*/ + uivector bitlen_lld; /*lit,len,dist code lenghts (int bits), literally (without repeat codes).*/ + uivector bitlen_lld_e; /*bitlen_lld encoded with repeat codes (this is a rudemtary run length compression)*/ + /*bitlen_cl is the code length code lengths ("clcl"). The bit lengths of codes to represent tree_cl + (these are written as is in the file, it would be crazy to compress these using yet another huffman + tree that needs to be represented by yet another set of code lengths)*/ + uivector bitlen_cl; + size_t datasize = dataend - datapos; + + /* + Due to the huffman compression of huffman tree representations ("two levels"), there are some anologies: + bitlen_lld is to tree_cl what data is to tree_ll and tree_d. + bitlen_lld_e is to bitlen_lld what lz77_encoded is to data. + bitlen_cl is to bitlen_lld_e what bitlen_lld is to lz77_encoded. + */ + + unsigned BFINAL = final; + size_t numcodes_ll, numcodes_d, i; + unsigned HLIT, HDIST, HCLEN; + + uivector_init(&lz77_encoded); + HuffmanTree_init(&tree_ll); + HuffmanTree_init(&tree_d); + HuffmanTree_init(&tree_cl); + uivector_init(&frequencies_ll); + uivector_init(&frequencies_d); + uivector_init(&frequencies_cl); + uivector_init(&bitlen_lld); + uivector_init(&bitlen_lld_e); + uivector_init(&bitlen_cl); + + /*This while loop never loops due to a break at the end, it is here to + allow breaking out of it to the cleanup phase on error conditions.*/ + while(!error) + { + if(settings->use_lz77) + { + error = encodeLZ77(&lz77_encoded, hash, data, datapos, dataend, settings->windowsize, + settings->minmatch, settings->nicematch, settings->lazymatching); + if(error) break; + } + else + { + if(!uivector_resize(&lz77_encoded, datasize)) ERROR_BREAK(83 /*alloc fail*/); + for(i = datapos; i < dataend; i++) lz77_encoded.data[i] = data[i]; /*no LZ77, but still will be Huffman compressed*/ + } + + if(!uivector_resizev(&frequencies_ll, 286, 0)) ERROR_BREAK(83 /*alloc fail*/); + if(!uivector_resizev(&frequencies_d, 30, 0)) ERROR_BREAK(83 /*alloc fail*/); + + /*Count the frequencies of lit, len and dist codes*/ + for(i = 0; i < lz77_encoded.size; i++) + { + unsigned symbol = lz77_encoded.data[i]; + frequencies_ll.data[symbol]++; + if(symbol > 256) + { + unsigned dist = lz77_encoded.data[i + 2]; + frequencies_d.data[dist]++; + i += 3; + } + } + frequencies_ll.data[256] = 1; /*there will be exactly 1 end code, at the end of the block*/ + + /*Make both huffman trees, one for the lit and len codes, one for the dist codes*/ + error = HuffmanTree_makeFromFrequencies(&tree_ll, frequencies_ll.data, 257, frequencies_ll.size, 15); + if(error) break; + /*2, not 1, is chosen for mincodes: some buggy PNG decoders require at least 2 symbols in the dist tree*/ + error = HuffmanTree_makeFromFrequencies(&tree_d, frequencies_d.data, 2, frequencies_d.size, 15); + if(error) break; + + numcodes_ll = tree_ll.numcodes; if(numcodes_ll > 286) numcodes_ll = 286; + numcodes_d = tree_d.numcodes; if(numcodes_d > 30) numcodes_d = 30; + /*store the code lengths of both generated trees in bitlen_lld*/ + for(i = 0; i < numcodes_ll; i++) uivector_push_back(&bitlen_lld, HuffmanTree_getLength(&tree_ll, (unsigned)i)); + for(i = 0; i < numcodes_d; i++) uivector_push_back(&bitlen_lld, HuffmanTree_getLength(&tree_d, (unsigned)i)); + + /*run-length compress bitlen_ldd into bitlen_lld_e by using repeat codes 16 (copy length 3-6 times), + 17 (3-10 zeroes), 18 (11-138 zeroes)*/ + for(i = 0; i < (unsigned)bitlen_lld.size; i++) + { + unsigned j = 0; /*amount of repititions*/ + while(i + j + 1 < (unsigned)bitlen_lld.size && bitlen_lld.data[i + j + 1] == bitlen_lld.data[i]) j++; + + if(bitlen_lld.data[i] == 0 && j >= 2) /*repeat code for zeroes*/ + { + j++; /*include the first zero*/ + if(j <= 10) /*repeat code 17 supports max 10 zeroes*/ + { + uivector_push_back(&bitlen_lld_e, 17); + uivector_push_back(&bitlen_lld_e, j - 3); + } + else /*repeat code 18 supports max 138 zeroes*/ + { + if(j > 138) j = 138; + uivector_push_back(&bitlen_lld_e, 18); + uivector_push_back(&bitlen_lld_e, j - 11); + } + i += (j - 1); + } + else if(j >= 3) /*repeat code for value other than zero*/ + { + size_t k; + unsigned num = j / 6, rest = j % 6; + uivector_push_back(&bitlen_lld_e, bitlen_lld.data[i]); + for(k = 0; k < num; k++) + { + uivector_push_back(&bitlen_lld_e, 16); + uivector_push_back(&bitlen_lld_e, 6 - 3); + } + if(rest >= 3) + { + uivector_push_back(&bitlen_lld_e, 16); + uivector_push_back(&bitlen_lld_e, rest - 3); + } + else j -= rest; + i += j; + } + else /*too short to benefit from repeat code*/ + { + uivector_push_back(&bitlen_lld_e, bitlen_lld.data[i]); + } + } + + /*generate tree_cl, the huffmantree of huffmantrees*/ + + if(!uivector_resizev(&frequencies_cl, NUM_CODE_LENGTH_CODES, 0)) ERROR_BREAK(83 /*alloc fail*/); + for(i = 0; i < bitlen_lld_e.size; i++) + { + frequencies_cl.data[bitlen_lld_e.data[i]]++; + /*after a repeat code come the bits that specify the number of repetitions, + those don't need to be in the frequencies_cl calculation*/ + if(bitlen_lld_e.data[i] >= 16) i++; + } + + error = HuffmanTree_makeFromFrequencies(&tree_cl, frequencies_cl.data, + frequencies_cl.size, frequencies_cl.size, 7); + if(error) break; + + if(!uivector_resize(&bitlen_cl, tree_cl.numcodes)) ERROR_BREAK(83 /*alloc fail*/); + for(i = 0; i < tree_cl.numcodes; i++) + { + /*lenghts of code length tree is in the order as specified by deflate*/ + bitlen_cl.data[i] = HuffmanTree_getLength(&tree_cl, CLCL_ORDER[i]); + } + while(bitlen_cl.data[bitlen_cl.size - 1] == 0 && bitlen_cl.size > 4) + { + /*remove zeros at the end, but minimum size must be 4*/ + if(!uivector_resize(&bitlen_cl, bitlen_cl.size - 1)) ERROR_BREAK(83 /*alloc fail*/); + } + if(error) break; + + /* + Write everything into the output + + After the BFINAL and BTYPE, the dynamic block consists out of the following: + - 5 bits HLIT, 5 bits HDIST, 4 bits HCLEN + - (HCLEN+4)*3 bits code lengths of code length alphabet + - HLIT + 257 code lenghts of lit/length alphabet (encoded using the code length + alphabet, + possible repetition codes 16, 17, 18) + - HDIST + 1 code lengths of distance alphabet (encoded using the code length + alphabet, + possible repetition codes 16, 17, 18) + - compressed data + - 256 (end code) + */ + + /*Write block type*/ + addBitToStream(bp, out, BFINAL); + addBitToStream(bp, out, 0); /*first bit of BTYPE "dynamic"*/ + addBitToStream(bp, out, 1); /*second bit of BTYPE "dynamic"*/ + + /*write the HLIT, HDIST and HCLEN values*/ + HLIT = (unsigned)(numcodes_ll - 257); + HDIST = (unsigned)(numcodes_d - 1); + HCLEN = (unsigned)bitlen_cl.size - 4; + /*trim zeroes for HCLEN. HLIT and HDIST were already trimmed at tree creation*/ + while(!bitlen_cl.data[HCLEN + 4 - 1] && HCLEN > 0) HCLEN--; + addBitsToStream(bp, out, HLIT, 5); + addBitsToStream(bp, out, HDIST, 5); + addBitsToStream(bp, out, HCLEN, 4); + + /*write the code lenghts of the code length alphabet*/ + for(i = 0; i < HCLEN + 4; i++) addBitsToStream(bp, out, bitlen_cl.data[i], 3); + + /*write the lenghts of the lit/len AND the dist alphabet*/ + for(i = 0; i < bitlen_lld_e.size; i++) + { + addHuffmanSymbol(bp, out, HuffmanTree_getCode(&tree_cl, bitlen_lld_e.data[i]), + HuffmanTree_getLength(&tree_cl, bitlen_lld_e.data[i])); + /*extra bits of repeat codes*/ + if(bitlen_lld_e.data[i] == 16) addBitsToStream(bp, out, bitlen_lld_e.data[++i], 2); + else if(bitlen_lld_e.data[i] == 17) addBitsToStream(bp, out, bitlen_lld_e.data[++i], 3); + else if(bitlen_lld_e.data[i] == 18) addBitsToStream(bp, out, bitlen_lld_e.data[++i], 7); + } + + /*write the compressed data symbols*/ + writeLZ77data(bp, out, &lz77_encoded, &tree_ll, &tree_d); + /*error: the length of the end code 256 must be larger than 0*/ + if(HuffmanTree_getLength(&tree_ll, 256) == 0) ERROR_BREAK(64); + + /*write the end code*/ + addHuffmanSymbol(bp, out, HuffmanTree_getCode(&tree_ll, 256), HuffmanTree_getLength(&tree_ll, 256)); + + break; /*end of error-while*/ + } + + /*cleanup*/ + uivector_cleanup(&lz77_encoded); + HuffmanTree_cleanup(&tree_ll); + HuffmanTree_cleanup(&tree_d); + HuffmanTree_cleanup(&tree_cl); + uivector_cleanup(&frequencies_ll); + uivector_cleanup(&frequencies_d); + uivector_cleanup(&frequencies_cl); + uivector_cleanup(&bitlen_lld_e); + uivector_cleanup(&bitlen_lld); + uivector_cleanup(&bitlen_cl); + + return error; +} + +static unsigned deflateFixed(ucvector* out, size_t* bp, Hash* hash, + const unsigned char* data, + size_t datapos, size_t dataend, + const LodePNGCompressSettings* settings, int final) +{ + HuffmanTree tree_ll; /*tree for literal values and length codes*/ + HuffmanTree tree_d; /*tree for distance codes*/ + + unsigned BFINAL = final; + unsigned error = 0; + size_t i; + + HuffmanTree_init(&tree_ll); + HuffmanTree_init(&tree_d); + + generateFixedLitLenTree(&tree_ll); + generateFixedDistanceTree(&tree_d); + + addBitToStream(bp, out, BFINAL); + addBitToStream(bp, out, 1); /*first bit of BTYPE*/ + addBitToStream(bp, out, 0); /*second bit of BTYPE*/ + + if(settings->use_lz77) /*LZ77 encoded*/ + { + uivector lz77_encoded; + uivector_init(&lz77_encoded); + error = encodeLZ77(&lz77_encoded, hash, data, datapos, dataend, settings->windowsize, + settings->minmatch, settings->nicematch, settings->lazymatching); + if(!error) writeLZ77data(bp, out, &lz77_encoded, &tree_ll, &tree_d); + uivector_cleanup(&lz77_encoded); + } + else /*no LZ77, but still will be Huffman compressed*/ + { + for(i = datapos; i < dataend; i++) + { + addHuffmanSymbol(bp, out, HuffmanTree_getCode(&tree_ll, data[i]), HuffmanTree_getLength(&tree_ll, data[i])); + } + } + /*add END code*/ + if(!error) addHuffmanSymbol(bp, out, HuffmanTree_getCode(&tree_ll, 256), HuffmanTree_getLength(&tree_ll, 256)); + + /*cleanup*/ + HuffmanTree_cleanup(&tree_ll); + HuffmanTree_cleanup(&tree_d); + + return error; +} + +static unsigned lodepng_deflatev(ucvector* out, const unsigned char* in, size_t insize, + const LodePNGCompressSettings* settings) +{ + unsigned error = 0; + size_t i, blocksize, numdeflateblocks; + size_t bp = 0; /*the bit pointer*/ + Hash hash; + + if(settings->btype > 2) return 61; + else if(settings->btype == 0) return deflateNoCompression(out, in, insize); + else if(settings->btype == 1) blocksize = insize; + else /*if(settings->btype == 2)*/ + { + blocksize = insize / 8 + 8; + if(blocksize < 65535) blocksize = 65535; + } + + numdeflateblocks = (insize + blocksize - 1) / blocksize; + if(numdeflateblocks == 0) numdeflateblocks = 1; + + error = hash_init(&hash, settings->windowsize); + if(error) return error; + + for(i = 0; i < numdeflateblocks && !error; i++) + { + int final = i == numdeflateblocks - 1; + size_t start = i * blocksize; + size_t end = start + blocksize; + if(end > insize) end = insize; + + if(settings->btype == 1) error = deflateFixed(out, &bp, &hash, in, start, end, settings, final); + else if(settings->btype == 2) error = deflateDynamic(out, &bp, &hash, in, start, end, settings, final); + } + + hash_cleanup(&hash); + + return error; +} + +unsigned lodepng_deflate(unsigned char** out, size_t* outsize, + const unsigned char* in, size_t insize, + const LodePNGCompressSettings* settings) +{ + unsigned error; + ucvector v; + ucvector_init_buffer(&v, *out, *outsize); + error = lodepng_deflatev(&v, in, insize, settings); + *out = v.data; + *outsize = v.size; + return error; +} + +static unsigned deflate(unsigned char** out, size_t* outsize, + const unsigned char* in, size_t insize, + const LodePNGCompressSettings* settings) +{ + if(settings->custom_deflate) + { + return settings->custom_deflate(out, outsize, in, insize, settings); + } + else + { + return lodepng_deflate(out, outsize, in, insize, settings); + } +} + +#endif /*LODEPNG_COMPILE_DECODER*/ + +/* ////////////////////////////////////////////////////////////////////////// */ +/* / Adler32 */ +/* ////////////////////////////////////////////////////////////////////////// */ + +static unsigned update_adler32(unsigned adler, const unsigned char* data, unsigned len) +{ + unsigned s1 = adler & 0xffff; + unsigned s2 = (adler >> 16) & 0xffff; + + while(len > 0) + { + /*at least 5550 sums can be done before the sums overflow, saving a lot of module divisions*/ + unsigned amount = len > 5550 ? 5550 : len; + len -= amount; + while(amount > 0) + { + s1 += (*data++); + s2 += s1; + amount--; + } + s1 %= 65521; + s2 %= 65521; + } + + return (s2 << 16) | s1; +} + +/*Return the adler32 of the bytes data[0..len-1]*/ +static unsigned adler32(const unsigned char* data, unsigned len) +{ + return update_adler32(1L, data, len); +} + +/* ////////////////////////////////////////////////////////////////////////// */ +/* / Zlib / */ +/* ////////////////////////////////////////////////////////////////////////// */ + +#ifdef LODEPNG_COMPILE_DECODER + +unsigned lodepng_zlib_decompress(unsigned char** out, size_t* outsize, const unsigned char* in, + size_t insize, const LodePNGDecompressSettings* settings) +{ + unsigned error = 0; + unsigned CM, CINFO, FDICT; + + if(insize < 2) return 53; /*error, size of zlib data too small*/ + /*read information from zlib header*/ + if((in[0] * 256 + in[1]) % 31 != 0) + { + /*error: 256 * in[0] + in[1] must be a multiple of 31, the FCHECK value is supposed to be made that way*/ + return 24; + } + + CM = in[0] & 15; + CINFO = (in[0] >> 4) & 15; + /*FCHECK = in[1] & 31;*/ /*FCHECK is already tested above*/ + FDICT = (in[1] >> 5) & 1; + /*FLEVEL = (in[1] >> 6) & 3;*/ /*FLEVEL is not used here*/ + + if(CM != 8 || CINFO > 7) + { + /*error: only compression method 8: inflate with sliding window of 32k is supported by the PNG spec*/ + return 25; + } + if(FDICT != 0) + { + /*error: the specification of PNG says about the zlib stream: + "The additional flags shall not specify a preset dictionary."*/ + return 26; + } + + error = inflate(out, outsize, in + 2, insize - 2, settings); + if(error) return error; + + if(!settings->ignore_adler32) + { + unsigned ADLER32 = lodepng_read32bitInt(&in[insize - 4]); + unsigned checksum = adler32(*out, (unsigned)(*outsize)); + if(checksum != ADLER32) return 58; /*error, adler checksum not correct, data must be corrupted*/ + } + + return 0; /*no error*/ +} + +static unsigned zlib_decompress(unsigned char** out, size_t* outsize, const unsigned char* in, + size_t insize, const LodePNGDecompressSettings* settings) +{ + if(settings->custom_zlib) + { + return settings->custom_zlib(out, outsize, in, insize, settings); + } + else + { + return lodepng_zlib_decompress(out, outsize, in, insize, settings); + } +} + +#endif /*LODEPNG_COMPILE_DECODER*/ + +#ifdef LODEPNG_COMPILE_ENCODER + +unsigned lodepng_zlib_compress(unsigned char** out, size_t* outsize, const unsigned char* in, + size_t insize, const LodePNGCompressSettings* settings) +{ + /*initially, *out must be NULL and outsize 0, if you just give some random *out + that's pointing to a non allocated buffer, this'll crash*/ + ucvector outv; + size_t i; + unsigned error; + unsigned char* deflatedata = 0; + size_t deflatesize = 0; + + unsigned ADLER32; + /*zlib data: 1 byte CMF (CM+CINFO), 1 byte FLG, deflate data, 4 byte ADLER32 checksum of the Decompressed data*/ + unsigned CMF = 120; /*0b01111000: CM 8, CINFO 7. With CINFO 7, any window size up to 32768 can be used.*/ + unsigned FLEVEL = 0; + unsigned FDICT = 0; + unsigned CMFFLG = 256 * CMF + FDICT * 32 + FLEVEL * 64; + unsigned FCHECK = 31 - CMFFLG % 31; + CMFFLG += FCHECK; + + /*ucvector-controlled version of the output buffer, for dynamic array*/ + ucvector_init_buffer(&outv, *out, *outsize); + + ucvector_push_back(&outv, (unsigned char)(CMFFLG / 256)); + ucvector_push_back(&outv, (unsigned char)(CMFFLG % 256)); + + error = deflate(&deflatedata, &deflatesize, in, insize, settings); + + if(!error) + { + ADLER32 = adler32(in, (unsigned)insize); + for(i = 0; i < deflatesize; i++) ucvector_push_back(&outv, deflatedata[i]); + lodepng_free(deflatedata); + lodepng_add32bitInt(&outv, ADLER32); + } + + *out = outv.data; + *outsize = outv.size; + + return error; +} + +/* compress using the default or custom zlib function */ +static unsigned zlib_compress(unsigned char** out, size_t* outsize, const unsigned char* in, + size_t insize, const LodePNGCompressSettings* settings) +{ + if(settings->custom_zlib) + { + return settings->custom_zlib(out, outsize, in, insize, settings); + } + else + { + return lodepng_zlib_compress(out, outsize, in, insize, settings); + } +} + +#endif /*LODEPNG_COMPILE_ENCODER*/ + +#else /*no LODEPNG_COMPILE_ZLIB*/ + +#ifdef LODEPNG_COMPILE_DECODER +static unsigned zlib_decompress(unsigned char** out, size_t* outsize, const unsigned char* in, + size_t insize, const LodePNGDecompressSettings* settings) +{ + if (!settings->custom_zlib) return 87; /*no custom zlib function provided */ + return settings->custom_zlib(out, outsize, in, insize, settings); +} +#endif /*LODEPNG_COMPILE_DECODER*/ +#ifdef LODEPNG_COMPILE_ENCODER +static unsigned zlib_compress(unsigned char** out, size_t* outsize, const unsigned char* in, + size_t insize, const LodePNGCompressSettings* settings) +{ + if (!settings->custom_zlib) return 87; /*no custom zlib function provided */ + return settings->custom_zlib(out, outsize, in, insize, settings); +} +#endif /*LODEPNG_COMPILE_ENCODER*/ + +#endif /*LODEPNG_COMPILE_ZLIB*/ + +/* ////////////////////////////////////////////////////////////////////////// */ + +#ifdef LODEPNG_COMPILE_ENCODER + +/*this is a good tradeoff between speed and compression ratio*/ +#define DEFAULT_WINDOWSIZE 2048 + +void lodepng_compress_settings_init(LodePNGCompressSettings* settings) +{ + /*compress with dynamic huffman tree (not in the mathematical sense, just not the predefined one)*/ + settings->btype = 2; + settings->use_lz77 = 1; + settings->windowsize = DEFAULT_WINDOWSIZE; + settings->minmatch = 3; + settings->nicematch = 128; + settings->lazymatching = 1; + + settings->custom_zlib = 0; + settings->custom_deflate = 0; + settings->custom_context = 0; +} + +const LodePNGCompressSettings lodepng_default_compress_settings = {2, 1, DEFAULT_WINDOWSIZE, 3, 128, 1, 0, 0, 0}; + + +#endif /*LODEPNG_COMPILE_ENCODER*/ + +#ifdef LODEPNG_COMPILE_DECODER + +void lodepng_decompress_settings_init(LodePNGDecompressSettings* settings) +{ + settings->ignore_adler32 = 0; + + settings->custom_zlib = 0; + settings->custom_inflate = 0; + settings->custom_context = 0; +} + +const LodePNGDecompressSettings lodepng_default_decompress_settings = {0, 0, 0, 0}; + +#endif /*LODEPNG_COMPILE_DECODER*/ + +/* ////////////////////////////////////////////////////////////////////////// */ +/* ////////////////////////////////////////////////////////////////////////// */ +/* // End of Zlib related code. Begin of PNG related code. // */ +/* ////////////////////////////////////////////////////////////////////////// */ +/* ////////////////////////////////////////////////////////////////////////// */ + +#ifdef LODEPNG_COMPILE_PNG + +/* ////////////////////////////////////////////////////////////////////////// */ +/* / CRC32 / */ +/* ////////////////////////////////////////////////////////////////////////// */ + +/* CRC polynomial: 0xedb88320 */ +static unsigned lodepng_crc32_table[256] = { + 0u, 1996959894u, 3993919788u, 2567524794u, 124634137u, 1886057615u, 3915621685u, 2657392035u, + 249268274u, 2044508324u, 3772115230u, 2547177864u, 162941995u, 2125561021u, 3887607047u, 2428444049u, + 498536548u, 1789927666u, 4089016648u, 2227061214u, 450548861u, 1843258603u, 4107580753u, 2211677639u, + 325883990u, 1684777152u, 4251122042u, 2321926636u, 335633487u, 1661365465u, 4195302755u, 2366115317u, + 997073096u, 1281953886u, 3579855332u, 2724688242u, 1006888145u, 1258607687u, 3524101629u, 2768942443u, + 901097722u, 1119000684u, 3686517206u, 2898065728u, 853044451u, 1172266101u, 3705015759u, 2882616665u, + 651767980u, 1373503546u, 3369554304u, 3218104598u, 565507253u, 1454621731u, 3485111705u, 3099436303u, + 671266974u, 1594198024u, 3322730930u, 2970347812u, 795835527u, 1483230225u, 3244367275u, 3060149565u, + 1994146192u, 31158534u, 2563907772u, 4023717930u, 1907459465u, 112637215u, 2680153253u, 3904427059u, + 2013776290u, 251722036u, 2517215374u, 3775830040u, 2137656763u, 141376813u, 2439277719u, 3865271297u, + 1802195444u, 476864866u, 2238001368u, 4066508878u, 1812370925u, 453092731u, 2181625025u, 4111451223u, + 1706088902u, 314042704u, 2344532202u, 4240017532u, 1658658271u, 366619977u, 2362670323u, 4224994405u, + 1303535960u, 984961486u, 2747007092u, 3569037538u, 1256170817u, 1037604311u, 2765210733u, 3554079995u, + 1131014506u, 879679996u, 2909243462u, 3663771856u, 1141124467u, 855842277u, 2852801631u, 3708648649u, + 1342533948u, 654459306u, 3188396048u, 3373015174u, 1466479909u, 544179635u, 3110523913u, 3462522015u, + 1591671054u, 702138776u, 2966460450u, 3352799412u, 1504918807u, 783551873u, 3082640443u, 3233442989u, + 3988292384u, 2596254646u, 62317068u, 1957810842u, 3939845945u, 2647816111u, 81470997u, 1943803523u, + 3814918930u, 2489596804u, 225274430u, 2053790376u, 3826175755u, 2466906013u, 167816743u, 2097651377u, + 4027552580u, 2265490386u, 503444072u, 1762050814u, 4150417245u, 2154129355u, 426522225u, 1852507879u, + 4275313526u, 2312317920u, 282753626u, 1742555852u, 4189708143u, 2394877945u, 397917763u, 1622183637u, + 3604390888u, 2714866558u, 953729732u, 1340076626u, 3518719985u, 2797360999u, 1068828381u, 1219638859u, + 3624741850u, 2936675148u, 906185462u, 1090812512u, 3747672003u, 2825379669u, 829329135u, 1181335161u, + 3412177804u, 3160834842u, 628085408u, 1382605366u, 3423369109u, 3138078467u, 570562233u, 1426400815u, + 3317316542u, 2998733608u, 733239954u, 1555261956u, 3268935591u, 3050360625u, 752459403u, 1541320221u, + 2607071920u, 3965973030u, 1969922972u, 40735498u, 2617837225u, 3943577151u, 1913087877u, 83908371u, + 2512341634u, 3803740692u, 2075208622u, 213261112u, 2463272603u, 3855990285u, 2094854071u, 198958881u, + 2262029012u, 4057260610u, 1759359992u, 534414190u, 2176718541u, 4139329115u, 1873836001u, 414664567u, + 2282248934u, 4279200368u, 1711684554u, 285281116u, 2405801727u, 4167216745u, 1634467795u, 376229701u, + 2685067896u, 3608007406u, 1308918612u, 956543938u, 2808555105u, 3495958263u, 1231636301u, 1047427035u, + 2932959818u, 3654703836u, 1088359270u, 936918000u, 2847714899u, 3736837829u, 1202900863u, 817233897u, + 3183342108u, 3401237130u, 1404277552u, 615818150u, 3134207493u, 3453421203u, 1423857449u, 601450431u, + 3009837614u, 3294710456u, 1567103746u, 711928724u, 3020668471u, 3272380065u, 1510334235u, 755167117u +}; + +/*Return the CRC of the bytes buf[0..len-1].*/ +unsigned lodepng_crc32(const unsigned char* buf, size_t len) +{ + unsigned c = 0xffffffffL; + size_t n; + + for(n = 0; n < len; n++) + { + c = lodepng_crc32_table[(c ^ buf[n]) & 0xff] ^ (c >> 8); + } + return c ^ 0xffffffffL; +} + +/* ////////////////////////////////////////////////////////////////////////// */ +/* / Reading and writing single bits and bytes from/to stream for LodePNG / */ +/* ////////////////////////////////////////////////////////////////////////// */ + +static unsigned char readBitFromReversedStream(size_t* bitpointer, const unsigned char* bitstream) +{ + unsigned char result = (unsigned char)((bitstream[(*bitpointer) >> 3] >> (7 - ((*bitpointer) & 0x7))) & 1); + (*bitpointer)++; + return result; +} + +static unsigned readBitsFromReversedStream(size_t* bitpointer, const unsigned char* bitstream, size_t nbits) +{ + unsigned result = 0; + size_t i; + for(i = nbits - 1; i < nbits; i--) + { + result += (unsigned)readBitFromReversedStream(bitpointer, bitstream) << i; + } + return result; +} + +#ifdef LODEPNG_COMPILE_DECODER +static void setBitOfReversedStream0(size_t* bitpointer, unsigned char* bitstream, unsigned char bit) +{ + /*the current bit in bitstream must be 0 for this to work*/ + if(bit) + { + /*earlier bit of huffman code is in a lesser significant bit of an earlier byte*/ + bitstream[(*bitpointer) >> 3] |= (bit << (7 - ((*bitpointer) & 0x7))); + } + (*bitpointer)++; +} +#endif /*LODEPNG_COMPILE_DECODER*/ + +static void setBitOfReversedStream(size_t* bitpointer, unsigned char* bitstream, unsigned char bit) +{ + /*the current bit in bitstream may be 0 or 1 for this to work*/ + if(bit == 0) bitstream[(*bitpointer) >> 3] &= (unsigned char)(~(1 << (7 - ((*bitpointer) & 0x7)))); + else bitstream[(*bitpointer) >> 3] |= (1 << (7 - ((*bitpointer) & 0x7))); + (*bitpointer)++; +} + +/* ////////////////////////////////////////////////////////////////////////// */ +/* / PNG chunks / */ +/* ////////////////////////////////////////////////////////////////////////// */ + +unsigned lodepng_chunk_length(const unsigned char* chunk) +{ + return lodepng_read32bitInt(&chunk[0]); +} + +void lodepng_chunk_type(char type[5], const unsigned char* chunk) +{ + unsigned i; + for(i = 0; i < 4; i++) type[i] = chunk[4 + i]; + type[4] = 0; /*null termination char*/ +} + +unsigned char lodepng_chunk_type_equals(const unsigned char* chunk, const char* type) +{ + if(strlen(type) != 4) return 0; + return (chunk[4] == type[0] && chunk[5] == type[1] && chunk[6] == type[2] && chunk[7] == type[3]); +} + +unsigned char lodepng_chunk_ancillary(const unsigned char* chunk) +{ + return((chunk[4] & 32) != 0); +} + +unsigned char lodepng_chunk_private(const unsigned char* chunk) +{ + return((chunk[6] & 32) != 0); +} + +unsigned char lodepng_chunk_safetocopy(const unsigned char* chunk) +{ + return((chunk[7] & 32) != 0); +} + +unsigned char* lodepng_chunk_data(unsigned char* chunk) +{ + return &chunk[8]; +} + +const unsigned char* lodepng_chunk_data_const(const unsigned char* chunk) +{ + return &chunk[8]; +} + +unsigned lodepng_chunk_check_crc(const unsigned char* chunk) +{ + unsigned length = lodepng_chunk_length(chunk); + unsigned CRC = lodepng_read32bitInt(&chunk[length + 8]); + /*the CRC is taken of the data and the 4 chunk type letters, not the length*/ + unsigned checksum = lodepng_crc32(&chunk[4], length + 4); + if(CRC != checksum) return 1; + else return 0; +} + +void lodepng_chunk_generate_crc(unsigned char* chunk) +{ + unsigned length = lodepng_chunk_length(chunk); + unsigned CRC = lodepng_crc32(&chunk[4], length + 4); + lodepng_set32bitInt(chunk + 8 + length, CRC); +} + +unsigned char* lodepng_chunk_next(unsigned char* chunk) +{ + unsigned total_chunk_length = lodepng_chunk_length(chunk) + 12; + return &chunk[total_chunk_length]; +} + +const unsigned char* lodepng_chunk_next_const(const unsigned char* chunk) +{ + unsigned total_chunk_length = lodepng_chunk_length(chunk) + 12; + return &chunk[total_chunk_length]; +} + +unsigned lodepng_chunk_append(unsigned char** out, size_t* outlength, const unsigned char* chunk) +{ + unsigned i; + unsigned total_chunk_length = lodepng_chunk_length(chunk) + 12; + unsigned char *chunk_start, *new_buffer; + size_t new_length = (*outlength) + total_chunk_length; + if(new_length < total_chunk_length || new_length < (*outlength)) return 77; /*integer overflow happened*/ + + new_buffer = (unsigned char*)lodepng_realloc(*out, new_length); + if(!new_buffer) return 83; /*alloc fail*/ + (*out) = new_buffer; + (*outlength) = new_length; + chunk_start = &(*out)[new_length - total_chunk_length]; + + for(i = 0; i < total_chunk_length; i++) chunk_start[i] = chunk[i]; + + return 0; +} + +unsigned lodepng_chunk_create(unsigned char** out, size_t* outlength, unsigned length, + const char* type, const unsigned char* data) +{ + unsigned i; + unsigned char *chunk, *new_buffer; + size_t new_length = (*outlength) + length + 12; + if(new_length < length + 12 || new_length < (*outlength)) return 77; /*integer overflow happened*/ + new_buffer = (unsigned char*)lodepng_realloc(*out, new_length); + if(!new_buffer) return 83; /*alloc fail*/ + (*out) = new_buffer; + (*outlength) = new_length; + chunk = &(*out)[(*outlength) - length - 12]; + + /*1: length*/ + lodepng_set32bitInt(chunk, (unsigned)length); + + /*2: chunk name (4 letters)*/ + chunk[4] = type[0]; + chunk[5] = type[1]; + chunk[6] = type[2]; + chunk[7] = type[3]; + + /*3: the data*/ + for(i = 0; i < length; i++) chunk[8 + i] = data[i]; + + /*4: CRC (of the chunkname characters and the data)*/ + lodepng_chunk_generate_crc(chunk); + + return 0; +} + +/* ////////////////////////////////////////////////////////////////////////// */ +/* / Color types and such / */ +/* ////////////////////////////////////////////////////////////////////////// */ + +/*return type is a LodePNG error code*/ +static unsigned checkColorValidity(LodePNGColorType colortype, unsigned bd) /*bd = bitdepth*/ +{ + switch(colortype) + { + case 0: if(!(bd == 1 || bd == 2 || bd == 4 || bd == 8 || bd == 16)) return 37; break; /*grey*/ + case 2: if(!( bd == 8 || bd == 16)) return 37; break; /*RGB*/ + case 3: if(!(bd == 1 || bd == 2 || bd == 4 || bd == 8 )) return 37; break; /*palette*/ + case 4: if(!( bd == 8 || bd == 16)) return 37; break; /*grey + alpha*/ + case 6: if(!( bd == 8 || bd == 16)) return 37; break; /*RGBA*/ + default: return 31; + } + return 0; /*allowed color type / bits combination*/ +} + +static unsigned getNumColorChannels(LodePNGColorType colortype) +{ + switch(colortype) + { + case 0: return 1; /*grey*/ + case 2: return 3; /*RGB*/ + case 3: return 1; /*palette*/ + case 4: return 2; /*grey + alpha*/ + case 6: return 4; /*RGBA*/ + } + return 0; /*unexisting color type*/ +} + +static unsigned lodepng_get_bpp_lct(LodePNGColorType colortype, unsigned bitdepth) +{ + /*bits per pixel is amount of channels * bits per channel*/ + return getNumColorChannels(colortype) * bitdepth; +} + +/* ////////////////////////////////////////////////////////////////////////// */ + +void lodepng_color_mode_init(LodePNGColorMode* info) +{ + info->key_defined = 0; + info->key_r = info->key_g = info->key_b = 0; + info->colortype = LCT_RGBA; + info->bitdepth = 8; + info->palette = 0; + info->palettesize = 0; +} + +void lodepng_color_mode_cleanup(LodePNGColorMode* info) +{ + lodepng_palette_clear(info); +} + +unsigned lodepng_color_mode_copy(LodePNGColorMode* dest, const LodePNGColorMode* source) +{ + size_t i; + lodepng_color_mode_cleanup(dest); + *dest = *source; + if(source->palette) + { + dest->palette = (unsigned char*)lodepng_malloc(1024); + if(!dest->palette && source->palettesize) return 83; /*alloc fail*/ + for(i = 0; i < source->palettesize * 4; i++) dest->palette[i] = source->palette[i]; + } + return 0; +} + +static int lodepng_color_mode_equal(const LodePNGColorMode* a, const LodePNGColorMode* b) +{ + size_t i; + if(a->colortype != b->colortype) return 0; + if(a->bitdepth != b->bitdepth) return 0; + if(a->key_defined != b->key_defined) return 0; + if(a->key_defined) + { + if(a->key_r != b->key_r) return 0; + if(a->key_g != b->key_g) return 0; + if(a->key_b != b->key_b) return 0; + } + if(a->palettesize != b->palettesize) return 0; + for(i = 0; i < a->palettesize * 4; i++) + { + if(a->palette[i] != b->palette[i]) return 0; + } + return 1; +} + +void lodepng_palette_clear(LodePNGColorMode* info) +{ + if(info->palette) lodepng_free(info->palette); + info->palette = 0; + info->palettesize = 0; +} + +unsigned lodepng_palette_add(LodePNGColorMode* info, + unsigned char r, unsigned char g, unsigned char b, unsigned char a) +{ + unsigned char* data; + /*the same resize technique as C++ std::vectors is used, and here it's made so that for a palette with + the max of 256 colors, it'll have the exact alloc size*/ + if(!info->palette) /*allocate palette if empty*/ + { + /*room for 256 colors with 4 bytes each*/ + data = (unsigned char*)lodepng_realloc(info->palette, 1024); + if(!data) return 83; /*alloc fail*/ + else info->palette = data; + } + info->palette[4 * info->palettesize + 0] = r; + info->palette[4 * info->palettesize + 1] = g; + info->palette[4 * info->palettesize + 2] = b; + info->palette[4 * info->palettesize + 3] = a; + info->palettesize++; + return 0; +} + +unsigned lodepng_get_bpp(const LodePNGColorMode* info) +{ + /*calculate bits per pixel out of colortype and bitdepth*/ + return lodepng_get_bpp_lct(info->colortype, info->bitdepth); +} + +unsigned lodepng_get_channels(const LodePNGColorMode* info) +{ + return getNumColorChannels(info->colortype); +} + +unsigned lodepng_is_greyscale_type(const LodePNGColorMode* info) +{ + return info->colortype == LCT_GREY || info->colortype == LCT_GREY_ALPHA; +} + +unsigned lodepng_is_alpha_type(const LodePNGColorMode* info) +{ + return (info->colortype & 4) != 0; /*4 or 6*/ +} + +unsigned lodepng_is_palette_type(const LodePNGColorMode* info) +{ + return info->colortype == LCT_PALETTE; +} + +unsigned lodepng_has_palette_alpha(const LodePNGColorMode* info) +{ + size_t i; + for(i = 0; i < info->palettesize; i++) + { + if(info->palette[i * 4 + 3] < 255) return 1; + } + return 0; +} + +unsigned lodepng_can_have_alpha(const LodePNGColorMode* info) +{ + return info->key_defined + || lodepng_is_alpha_type(info) + || lodepng_has_palette_alpha(info); +} + +size_t lodepng_get_raw_size(unsigned w, unsigned h, const LodePNGColorMode* color) +{ + return (w * h * lodepng_get_bpp(color) + 7) / 8; +} + +size_t lodepng_get_raw_size_lct(unsigned w, unsigned h, LodePNGColorType colortype, unsigned bitdepth) +{ + return (w * h * lodepng_get_bpp_lct(colortype, bitdepth) + 7) / 8; +} + +#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS + +static void LodePNGUnknownChunks_init(LodePNGInfo* info) +{ + unsigned i; + for(i = 0; i < 3; i++) info->unknown_chunks_data[i] = 0; + for(i = 0; i < 3; i++) info->unknown_chunks_size[i] = 0; +} + +static void LodePNGUnknownChunks_cleanup(LodePNGInfo* info) +{ + unsigned i; + for(i = 0; i < 3; i++) lodepng_free(info->unknown_chunks_data[i]); +} + +static unsigned LodePNGUnknownChunks_copy(LodePNGInfo* dest, const LodePNGInfo* src) +{ + unsigned i; + + LodePNGUnknownChunks_cleanup(dest); + + for(i = 0; i < 3; i++) + { + size_t j; + dest->unknown_chunks_size[i] = src->unknown_chunks_size[i]; + dest->unknown_chunks_data[i] = (unsigned char*)lodepng_malloc(src->unknown_chunks_size[i]); + if(!dest->unknown_chunks_data[i] && dest->unknown_chunks_size[i]) return 83; /*alloc fail*/ + for(j = 0; j < src->unknown_chunks_size[i]; j++) + { + dest->unknown_chunks_data[i][j] = src->unknown_chunks_data[i][j]; + } + } + + return 0; +} + +/******************************************************************************/ + +static void LodePNGText_init(LodePNGInfo* info) +{ + info->text_num = 0; + info->text_keys = NULL; + info->text_strings = NULL; +} + +static void LodePNGText_cleanup(LodePNGInfo* info) +{ + size_t i; + for(i = 0; i < info->text_num; i++) + { + string_cleanup(&info->text_keys[i]); + string_cleanup(&info->text_strings[i]); + } + lodepng_free(info->text_keys); + lodepng_free(info->text_strings); +} + +static unsigned LodePNGText_copy(LodePNGInfo* dest, const LodePNGInfo* source) +{ + size_t i = 0; + dest->text_keys = 0; + dest->text_strings = 0; + dest->text_num = 0; + for(i = 0; i < source->text_num; i++) + { + CERROR_TRY_RETURN(lodepng_add_text(dest, source->text_keys[i], source->text_strings[i])); + } + return 0; +} + +void lodepng_clear_text(LodePNGInfo* info) +{ + LodePNGText_cleanup(info); +} + +unsigned lodepng_add_text(LodePNGInfo* info, const char* key, const char* str) +{ + char** new_keys = (char**)(lodepng_realloc(info->text_keys, sizeof(char*) * (info->text_num + 1))); + char** new_strings = (char**)(lodepng_realloc(info->text_strings, sizeof(char*) * (info->text_num + 1))); + if(!new_keys || !new_strings) + { + lodepng_free(new_keys); + lodepng_free(new_strings); + return 83; /*alloc fail*/ + } + + info->text_num++; + info->text_keys = new_keys; + info->text_strings = new_strings; + + string_init(&info->text_keys[info->text_num - 1]); + string_set(&info->text_keys[info->text_num - 1], key); + + string_init(&info->text_strings[info->text_num - 1]); + string_set(&info->text_strings[info->text_num - 1], str); + + return 0; +} + +/******************************************************************************/ + +static void LodePNGIText_init(LodePNGInfo* info) +{ + info->itext_num = 0; + info->itext_keys = NULL; + info->itext_langtags = NULL; + info->itext_transkeys = NULL; + info->itext_strings = NULL; +} + +static void LodePNGIText_cleanup(LodePNGInfo* info) +{ + size_t i; + for(i = 0; i < info->itext_num; i++) + { + string_cleanup(&info->itext_keys[i]); + string_cleanup(&info->itext_langtags[i]); + string_cleanup(&info->itext_transkeys[i]); + string_cleanup(&info->itext_strings[i]); + } + lodepng_free(info->itext_keys); + lodepng_free(info->itext_langtags); + lodepng_free(info->itext_transkeys); + lodepng_free(info->itext_strings); +} + +static unsigned LodePNGIText_copy(LodePNGInfo* dest, const LodePNGInfo* source) +{ + size_t i = 0; + dest->itext_keys = 0; + dest->itext_langtags = 0; + dest->itext_transkeys = 0; + dest->itext_strings = 0; + dest->itext_num = 0; + for(i = 0; i < source->itext_num; i++) + { + CERROR_TRY_RETURN(lodepng_add_itext(dest, source->itext_keys[i], source->itext_langtags[i], + source->itext_transkeys[i], source->itext_strings[i])); + } + return 0; +} + +void lodepng_clear_itext(LodePNGInfo* info) +{ + LodePNGIText_cleanup(info); +} + +unsigned lodepng_add_itext(LodePNGInfo* info, const char* key, const char* langtag, + const char* transkey, const char* str) +{ + char** new_keys = (char**)(lodepng_realloc(info->itext_keys, sizeof(char*) * (info->itext_num + 1))); + char** new_langtags = (char**)(lodepng_realloc(info->itext_langtags, sizeof(char*) * (info->itext_num + 1))); + char** new_transkeys = (char**)(lodepng_realloc(info->itext_transkeys, sizeof(char*) * (info->itext_num + 1))); + char** new_strings = (char**)(lodepng_realloc(info->itext_strings, sizeof(char*) * (info->itext_num + 1))); + if(!new_keys || !new_langtags || !new_transkeys || !new_strings) + { + lodepng_free(new_keys); + lodepng_free(new_langtags); + lodepng_free(new_transkeys); + lodepng_free(new_strings); + return 83; /*alloc fail*/ + } + + info->itext_num++; + info->itext_keys = new_keys; + info->itext_langtags = new_langtags; + info->itext_transkeys = new_transkeys; + info->itext_strings = new_strings; + + string_init(&info->itext_keys[info->itext_num - 1]); + string_set(&info->itext_keys[info->itext_num - 1], key); + + string_init(&info->itext_langtags[info->itext_num - 1]); + string_set(&info->itext_langtags[info->itext_num - 1], langtag); + + string_init(&info->itext_transkeys[info->itext_num - 1]); + string_set(&info->itext_transkeys[info->itext_num - 1], transkey); + + string_init(&info->itext_strings[info->itext_num - 1]); + string_set(&info->itext_strings[info->itext_num - 1], str); + + return 0; +} +#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ + +void lodepng_info_init(LodePNGInfo* info) +{ + lodepng_color_mode_init(&info->color); + info->interlace_method = 0; + info->compression_method = 0; + info->filter_method = 0; +#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS + info->background_defined = 0; + info->background_r = info->background_g = info->background_b = 0; + + LodePNGText_init(info); + LodePNGIText_init(info); + + info->time_defined = 0; + info->phys_defined = 0; + + LodePNGUnknownChunks_init(info); +#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ +} + +void lodepng_info_cleanup(LodePNGInfo* info) +{ + lodepng_color_mode_cleanup(&info->color); +#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS + LodePNGText_cleanup(info); + LodePNGIText_cleanup(info); + + LodePNGUnknownChunks_cleanup(info); +#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ +} + +unsigned lodepng_info_copy(LodePNGInfo* dest, const LodePNGInfo* source) +{ + lodepng_info_cleanup(dest); + *dest = *source; + lodepng_color_mode_init(&dest->color); + CERROR_TRY_RETURN(lodepng_color_mode_copy(&dest->color, &source->color)); + +#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS + CERROR_TRY_RETURN(LodePNGText_copy(dest, source)); + CERROR_TRY_RETURN(LodePNGIText_copy(dest, source)); + + LodePNGUnknownChunks_init(dest); + CERROR_TRY_RETURN(LodePNGUnknownChunks_copy(dest, source)); +#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ + return 0; +} + +void lodepng_info_swap(LodePNGInfo* a, LodePNGInfo* b) +{ + LodePNGInfo temp = *a; + *a = *b; + *b = temp; +} + +/* ////////////////////////////////////////////////////////////////////////// */ + +/*index: bitgroup index, bits: bitgroup size(1, 2 or 4), in: bitgroup value, out: octet array to add bits to*/ +static void addColorBits(unsigned char* out, size_t index, unsigned bits, unsigned in) +{ + unsigned m = bits == 1 ? 7 : bits == 2 ? 3 : 1; /*8 / bits - 1*/ + /*p = the partial index in the byte, e.g. with 4 palettebits it is 0 for first half or 1 for second half*/ + unsigned p = index & m; + in &= (1 << bits) - 1; /*filter out any other bits of the input value*/ + in = in << (bits * (m - p)); + if(p == 0) out[index * bits / 8] = in; + else out[index * bits / 8] |= in; +} + +typedef struct ColorTree ColorTree; + +/* +One node of a color tree +This is the data structure used to count the number of unique colors and to get a palette +index for a color. It's like an octree, but because the alpha channel is used too, each +node has 16 instead of 8 children. +*/ +struct ColorTree +{ + ColorTree* children[16]; /*up to 16 pointers to ColorTree of next level*/ + int index; /*the payload. Only has a meaningful value if this is in the last level*/ +}; + +static void color_tree_init(ColorTree* tree) +{ + int i; + for(i = 0; i < 16; i++) tree->children[i] = 0; + tree->index = -1; +} + +static void color_tree_cleanup(ColorTree* tree) +{ + int i; + for(i = 0; i < 16; i++) + { + if(tree->children[i]) + { + color_tree_cleanup(tree->children[i]); + lodepng_free(tree->children[i]); + } + } +} + +/*returns -1 if color not present, its index otherwise*/ +static int color_tree_get(ColorTree* tree, unsigned char r, unsigned char g, unsigned char b, unsigned char a) +{ + int bit = 0; + for(bit = 0; bit < 8; bit++) + { + int i = 8 * ((r >> bit) & 1) + 4 * ((g >> bit) & 1) + 2 * ((b >> bit) & 1) + 1 * ((a >> bit) & 1); + if(!tree->children[i]) return -1; + else tree = tree->children[i]; + } + return tree ? tree->index : -1; +} + +#ifdef LODEPNG_COMPILE_ENCODER +static int color_tree_has(ColorTree* tree, unsigned char r, unsigned char g, unsigned char b, unsigned char a) +{ + return color_tree_get(tree, r, g, b, a) >= 0; +} +#endif /*LODEPNG_COMPILE_ENCODER*/ + +/*color is not allowed to already exist. +Index should be >= 0 (it's signed to be compatible with using -1 for "doesn't exist")*/ +static void color_tree_add(ColorTree* tree, + unsigned char r, unsigned char g, unsigned char b, unsigned char a, int index) +{ + int bit; + for(bit = 0; bit < 8; bit++) + { + int i = 8 * ((r >> bit) & 1) + 4 * ((g >> bit) & 1) + 2 * ((b >> bit) & 1) + 1 * ((a >> bit) & 1); + if(!tree->children[i]) + { + tree->children[i] = (ColorTree*)lodepng_malloc(sizeof(ColorTree)); + color_tree_init(tree->children[i]); + } + tree = tree->children[i]; + } + tree->index = index; +} + +/*put a pixel, given its RGBA color, into image of any color type*/ +static unsigned rgba8ToPixel(unsigned char* out, size_t i, + const LodePNGColorMode* mode, ColorTree* tree /*for palette*/, + unsigned char r, unsigned char g, unsigned char b, unsigned char a) +{ + if(mode->colortype == LCT_GREY) + { + unsigned char grey = r; /*((unsigned short)r + g + b) / 3*/; + if(mode->bitdepth == 8) out[i] = grey; + else if(mode->bitdepth == 16) out[i * 2 + 0] = out[i * 2 + 1] = grey; + else + { + /*take the most significant bits of grey*/ + grey = (grey >> (8 - mode->bitdepth)) & ((1 << mode->bitdepth) - 1); + addColorBits(out, i, mode->bitdepth, grey); + } + } + else if(mode->colortype == LCT_RGB) + { + if(mode->bitdepth == 8) + { + out[i * 3 + 0] = r; + out[i * 3 + 1] = g; + out[i * 3 + 2] = b; + } + else + { + out[i * 6 + 0] = out[i * 6 + 1] = r; + out[i * 6 + 2] = out[i * 6 + 3] = g; + out[i * 6 + 4] = out[i * 6 + 5] = b; + } + } + else if(mode->colortype == LCT_PALETTE) + { + int index = color_tree_get(tree, r, g, b, a); + if(index < 0) return 82; /*color not in palette*/ + if(mode->bitdepth == 8) out[i] = index; + else addColorBits(out, i, mode->bitdepth, index); + } + else if(mode->colortype == LCT_GREY_ALPHA) + { + unsigned char grey = r; /*((unsigned short)r + g + b) / 3*/; + if(mode->bitdepth == 8) + { + out[i * 2 + 0] = grey; + out[i * 2 + 1] = a; + } + else if(mode->bitdepth == 16) + { + out[i * 4 + 0] = out[i * 4 + 1] = grey; + out[i * 4 + 2] = out[i * 4 + 3] = a; + } + } + else if(mode->colortype == LCT_RGBA) + { + if(mode->bitdepth == 8) + { + out[i * 4 + 0] = r; + out[i * 4 + 1] = g; + out[i * 4 + 2] = b; + out[i * 4 + 3] = a; + } + else + { + out[i * 8 + 0] = out[i * 8 + 1] = r; + out[i * 8 + 2] = out[i * 8 + 3] = g; + out[i * 8 + 4] = out[i * 8 + 5] = b; + out[i * 8 + 6] = out[i * 8 + 7] = a; + } + } + + return 0; /*no error*/ +} + +/*put a pixel, given its RGBA16 color, into image of any color 16-bitdepth type*/ +static unsigned rgba16ToPixel(unsigned char* out, size_t i, + const LodePNGColorMode* mode, + unsigned short r, unsigned short g, unsigned short b, unsigned short a) +{ + if(mode->bitdepth != 16) return 85; /*must be 16 for this function*/ + if(mode->colortype == LCT_GREY) + { + unsigned short grey = r; /*((unsigned)r + g + b) / 3*/; + out[i * 2 + 0] = (grey >> 8) & 255; + out[i * 2 + 1] = grey & 255; + } + else if(mode->colortype == LCT_RGB) + { + out[i * 6 + 0] = (r >> 8) & 255; + out[i * 6 + 1] = r & 255; + out[i * 6 + 2] = (g >> 8) & 255; + out[i * 6 + 3] = g & 255; + out[i * 6 + 4] = (b >> 8) & 255; + out[i * 6 + 5] = b & 255; + } + else if(mode->colortype == LCT_GREY_ALPHA) + { + unsigned short grey = r; /*((unsigned)r + g + b) / 3*/; + out[i * 4 + 0] = (grey >> 8) & 255; + out[i * 4 + 1] = grey & 255; + out[i * 4 + 2] = (a >> 8) & 255; + out[i * 4 + 3] = a & 255; + } + else if(mode->colortype == LCT_RGBA) + { + out[i * 8 + 0] = (r >> 8) & 255; + out[i * 8 + 1] = r & 255; + out[i * 8 + 2] = (g >> 8) & 255; + out[i * 8 + 3] = g & 255; + out[i * 8 + 4] = (b >> 8) & 255; + out[i * 8 + 5] = b & 255; + out[i * 8 + 6] = (a >> 8) & 255; + out[i * 8 + 7] = a & 255; + } + + return 0; /*no error*/ +} + +/*Get RGBA8 color of pixel with index i (y * width + x) from the raw image with given color type.*/ +static unsigned getPixelColorRGBA8(unsigned char* r, unsigned char* g, + unsigned char* b, unsigned char* a, + const unsigned char* in, size_t i, + const LodePNGColorMode* mode, + unsigned fix_png) +{ + if(mode->colortype == LCT_GREY) + { + if(mode->bitdepth == 8) + { + *r = *g = *b = in[i]; + if(mode->key_defined && *r == mode->key_r) *a = 0; + else *a = 255; + } + else if(mode->bitdepth == 16) + { + *r = *g = *b = in[i * 2 + 0]; + if(mode->key_defined && 256U * in[i * 2 + 0] + in[i * 2 + 1] == mode->key_r) *a = 0; + else *a = 255; + } + else + { + unsigned highest = ((1U << mode->bitdepth) - 1U); /*highest possible value for this bit depth*/ + size_t j = i * mode->bitdepth; + unsigned value = readBitsFromReversedStream(&j, in, mode->bitdepth); + *r = *g = *b = (value * 255) / highest; + if(mode->key_defined && value == mode->key_r) *a = 0; + else *a = 255; + } + } + else if(mode->colortype == LCT_RGB) + { + if(mode->bitdepth == 8) + { + *r = in[i * 3 + 0]; *g = in[i * 3 + 1]; *b = in[i * 3 + 2]; + if(mode->key_defined && *r == mode->key_r && *g == mode->key_g && *b == mode->key_b) *a = 0; + else *a = 255; + } + else + { + *r = in[i * 6 + 0]; + *g = in[i * 6 + 2]; + *b = in[i * 6 + 4]; + if(mode->key_defined && 256U * in[i * 6 + 0] + in[i * 6 + 1] == mode->key_r + && 256U * in[i * 6 + 2] + in[i * 6 + 3] == mode->key_g + && 256U * in[i * 6 + 4] + in[i * 6 + 5] == mode->key_b) *a = 0; + else *a = 255; + } + } + else if(mode->colortype == LCT_PALETTE) + { + unsigned index; + if(mode->bitdepth == 8) index = in[i]; + else + { + size_t j = i * mode->bitdepth; + index = readBitsFromReversedStream(&j, in, mode->bitdepth); + } + + if(index >= mode->palettesize) + { + /*This is an error according to the PNG spec, but fix_png can ignore it*/ + if(!fix_png) return (mode->bitdepth == 8 ? 46 : 47); /*index out of palette*/ + *r = *g = *b = 0; + *a = 255; + } + else + { + *r = mode->palette[index * 4 + 0]; + *g = mode->palette[index * 4 + 1]; + *b = mode->palette[index * 4 + 2]; + *a = mode->palette[index * 4 + 3]; + } + } + else if(mode->colortype == LCT_GREY_ALPHA) + { + if(mode->bitdepth == 8) + { + *r = *g = *b = in[i * 2 + 0]; + *a = in[i * 2 + 1]; + } + else + { + *r = *g = *b = in[i * 4 + 0]; + *a = in[i * 4 + 2]; + } + } + else if(mode->colortype == LCT_RGBA) + { + if(mode->bitdepth == 8) + { + *r = in[i * 4 + 0]; + *g = in[i * 4 + 1]; + *b = in[i * 4 + 2]; + *a = in[i * 4 + 3]; + } + else + { + *r = in[i * 8 + 0]; + *g = in[i * 8 + 2]; + *b = in[i * 8 + 4]; + *a = in[i * 8 + 6]; + } + } + + return 0; /*no error*/ +} + +/*Similar to getPixelColorRGBA8, but with all the for loops inside of the color +mode test cases, optimized to convert the colors much faster, when converting +to RGBA or RGB with 8 bit per cannel. buffer must be RGBA or RGB output with +enough memory, if has_alpha is true the output is RGBA. mode has the color mode +of the input buffer.*/ +static unsigned getPixelColorsRGBA8(unsigned char* buffer, size_t numpixels, + unsigned has_alpha, const unsigned char* in, + const LodePNGColorMode* mode, + unsigned fix_png) +{ + unsigned num_channels = has_alpha ? 4 : 3; + size_t i; + if(mode->colortype == LCT_GREY) + { + if(mode->bitdepth == 8) + { + for(i = 0; i < numpixels; i++, buffer += num_channels) + { + buffer[0] = buffer[1] = buffer[2] = in[i]; + if(has_alpha) buffer[3] = mode->key_defined && in[i] == mode->key_r ? 0 : 255; + } + } + else if(mode->bitdepth == 16) + { + for(i = 0; i < numpixels; i++, buffer += num_channels) + { + buffer[0] = buffer[1] = buffer[2] = in[i * 2]; + if(has_alpha) buffer[3] = mode->key_defined && 256U * in[i * 2 + 0] + in[i * 2 + 1] == mode->key_r ? 0 : 255; + } + } + else + { + unsigned highest = ((1U << mode->bitdepth) - 1U); /*highest possible value for this bit depth*/ + size_t j = 0; + for(i = 0; i < numpixels; i++, buffer += num_channels) + { + unsigned value = readBitsFromReversedStream(&j, in, mode->bitdepth); + buffer[0] = buffer[1] = buffer[2] = (value * 255) / highest; + if(has_alpha) buffer[3] = mode->key_defined && value == mode->key_r ? 0 : 255; + } + } + } + else if(mode->colortype == LCT_RGB) + { + if(mode->bitdepth == 8) + { + for(i = 0; i < numpixels; i++, buffer += num_channels) + { + buffer[0] = in[i * 3 + 0]; + buffer[1] = in[i * 3 + 1]; + buffer[2] = in[i * 3 + 2]; + if(has_alpha) buffer[3] = mode->key_defined && buffer[0] == mode->key_r + && buffer[1]== mode->key_g && buffer[2] == mode->key_b ? 0 : 255; + } + } + else + { + for(i = 0; i < numpixels; i++, buffer += num_channels) + { + buffer[0] = in[i * 6 + 0]; + buffer[1] = in[i * 6 + 2]; + buffer[2] = in[i * 6 + 4]; + if(has_alpha) buffer[3] = mode->key_defined + && 256U * in[i * 6 + 0] + in[i * 6 + 1] == mode->key_r + && 256U * in[i * 6 + 2] + in[i * 6 + 3] == mode->key_g + && 256U * in[i * 6 + 4] + in[i * 6 + 5] == mode->key_b ? 0 : 255; + } + } + } + else if(mode->colortype == LCT_PALETTE) + { + unsigned index; + size_t j = 0; + for(i = 0; i < numpixels; i++, buffer += num_channels) + { + if(mode->bitdepth == 8) index = in[i]; + else index = readBitsFromReversedStream(&j, in, mode->bitdepth); + + if(index >= mode->palettesize) + { + /*This is an error according to the PNG spec, but fix_png can ignore it*/ + if(!fix_png) return (mode->bitdepth == 8 ? 46 : 47); /*index out of palette*/ + buffer[0] = buffer[1] = buffer[2] = 0; + if(has_alpha) buffer[3] = 255; + } + else + { + buffer[0] = mode->palette[index * 4 + 0]; + buffer[1] = mode->palette[index * 4 + 1]; + buffer[2] = mode->palette[index * 4 + 2]; + if(has_alpha) buffer[3] = mode->palette[index * 4 + 3]; + } + } + } + else if(mode->colortype == LCT_GREY_ALPHA) + { + if(mode->bitdepth == 8) + { + for(i = 0; i < numpixels; i++, buffer += num_channels) + { + buffer[0] = buffer[1] = buffer[2] = in[i * 2 + 0]; + if(has_alpha) buffer[3] = in[i * 2 + 1]; + } + } + else + { + for(i = 0; i < numpixels; i++, buffer += num_channels) + { + buffer[0] = buffer[1] = buffer[2] = in[i * 4 + 0]; + if(has_alpha) buffer[3] = in[i * 4 + 2]; + } + } + } + else if(mode->colortype == LCT_RGBA) + { + if(mode->bitdepth == 8) + { + for(i = 0; i < numpixels; i++, buffer += num_channels) + { + buffer[0] = in[i * 4 + 0]; + buffer[1] = in[i * 4 + 1]; + buffer[2] = in[i * 4 + 2]; + if(has_alpha) buffer[3] = in[i * 4 + 3]; + } + } + else + { + for(i = 0; i < numpixels; i++, buffer += num_channels) + { + buffer[0] = in[i * 8 + 0]; + buffer[1] = in[i * 8 + 2]; + buffer[2] = in[i * 8 + 4]; + if(has_alpha) buffer[3] = in[i * 8 + 6]; + } + } + } + + return 0; /*no error*/ +} + +/*Get RGBA16 color of pixel with index i (y * width + x) from the raw image with +given color type, but the given color type must be 16-bit itself.*/ +static unsigned getPixelColorRGBA16(unsigned short* r, unsigned short* g, unsigned short* b, unsigned short* a, + const unsigned char* in, size_t i, const LodePNGColorMode* mode) +{ + if(mode->bitdepth != 16) return 85; /*error: this function only supports 16-bit input*/ + + if(mode->colortype == LCT_GREY) + { + *r = *g = *b = 256 * in[i * 2 + 0] + in[i * 2 + 1]; + if(mode->key_defined && 256U * in[i * 2 + 0] + in[i * 2 + 1] == mode->key_r) *a = 0; + else *a = 65535; + } + else if(mode->colortype == LCT_RGB) + { + *r = 256 * in[i * 6 + 0] + in[i * 6 + 1]; + *g = 256 * in[i * 6 + 2] + in[i * 6 + 3]; + *b = 256 * in[i * 6 + 4] + in[i * 6 + 5]; + if(mode->key_defined && 256U * in[i * 6 + 0] + in[i * 6 + 1] == mode->key_r + && 256U * in[i * 6 + 2] + in[i * 6 + 3] == mode->key_g + && 256U * in[i * 6 + 4] + in[i * 6 + 5] == mode->key_b) *a = 0; + else *a = 65535; + } + else if(mode->colortype == LCT_GREY_ALPHA) + { + *r = *g = *b = 256 * in[i * 4 + 0] + in[i * 4 + 1]; + *a = 256 * in[i * 4 + 2] + in[i * 4 + 3]; + } + else if(mode->colortype == LCT_RGBA) + { + *r = 256 * in[i * 8 + 0] + in[i * 8 + 1]; + *g = 256 * in[i * 8 + 2] + in[i * 8 + 3]; + *b = 256 * in[i * 8 + 4] + in[i * 8 + 5]; + *a = 256 * in[i * 8 + 6] + in[i * 8 + 7]; + } + else return 85; /*error: this function only supports 16-bit input, not palettes*/ + + return 0; /*no error*/ +} + +/* +converts from any color type to 24-bit or 32-bit (later maybe more supported). return value = LodePNG error code +the out buffer must have (w * h * bpp + 7) / 8 bytes, where bpp is the bits per pixel of the output color type +(lodepng_get_bpp) for < 8 bpp images, there may _not_ be padding bits at the end of scanlines. +*/ +unsigned lodepng_convert(unsigned char* out, const unsigned char* in, + LodePNGColorMode* mode_out, const LodePNGColorMode* mode_in, + unsigned w, unsigned h, unsigned fix_png) +{ + unsigned error = 0; + size_t i; + ColorTree tree; + size_t numpixels = w * h; + + if(lodepng_color_mode_equal(mode_out, mode_in)) + { + size_t numbytes = lodepng_get_raw_size(w, h, mode_in); + for(i = 0; i < numbytes; i++) out[i] = in[i]; + return error; + } + + if(mode_out->colortype == LCT_PALETTE) + { + size_t palsize = 1 << mode_out->bitdepth; + if(mode_out->palettesize < palsize) palsize = mode_out->palettesize; + color_tree_init(&tree); + for(i = 0; i < palsize; i++) + { + unsigned char* p = &mode_out->palette[i * 4]; + color_tree_add(&tree, p[0], p[1], p[2], p[3], i); + } + } + + if(mode_in->bitdepth == 16 && mode_out->bitdepth == 16) + { + for(i = 0; i < numpixels; i++) + { + unsigned short r = 0, g = 0, b = 0, a = 0; + error = getPixelColorRGBA16(&r, &g, &b, &a, in, i, mode_in); + if(error) break; + error = rgba16ToPixel(out, i, mode_out, r, g, b, a); + if(error) break; + } + } + else if(mode_out->bitdepth == 8 && mode_out->colortype == LCT_RGBA) + { + error = getPixelColorsRGBA8(out, numpixels, 1, in, mode_in, fix_png); + } + else if(mode_out->bitdepth == 8 && mode_out->colortype == LCT_RGB) + { + error = getPixelColorsRGBA8(out, numpixels, 0, in, mode_in, fix_png); + } + else + { + unsigned char r = 0, g = 0, b = 0, a = 0; + for(i = 0; i < numpixels; i++) + { + error = getPixelColorRGBA8(&r, &g, &b, &a, in, i, mode_in, fix_png); + if(error) break; + error = rgba8ToPixel(out, i, mode_out, &tree, r, g, b, a); + if(error) break; + } + } + + if(mode_out->colortype == LCT_PALETTE) + { + color_tree_cleanup(&tree); + } + + return error; +} + +#ifdef LODEPNG_COMPILE_ENCODER + +typedef struct ColorProfile +{ + unsigned char sixteenbit; /*needs more than 8 bits per channel*/ + unsigned char sixteenbit_done; + + + unsigned char colored; /*not greyscale*/ + unsigned char colored_done; + + unsigned char key; /*a color key is required, or more*/ + unsigned short key_r; /*these values are always in 16-bit bitdepth in the profile*/ + unsigned short key_g; + unsigned short key_b; + unsigned char alpha; /*alpha channel, or alpha palette, required*/ + unsigned char alpha_done; + + unsigned numcolors; + ColorTree tree; /*for listing the counted colors, up to 256*/ + unsigned char* palette; /*size 1024. Remember up to the first 256 RGBA colors*/ + unsigned maxnumcolors; /*if more than that amount counted*/ + unsigned char numcolors_done; + + unsigned greybits; /*amount of bits required for greyscale (1, 2, 4, 8). Does not take 16 bit into account.*/ + unsigned char greybits_done; + +} ColorProfile; + +static void color_profile_init(ColorProfile* profile, const LodePNGColorMode* mode) +{ + profile->sixteenbit = 0; + profile->sixteenbit_done = mode->bitdepth == 16 ? 0 : 1; + + profile->colored = 0; + profile->colored_done = lodepng_is_greyscale_type(mode) ? 1 : 0; + + profile->key = 0; + profile->alpha = 0; + profile->alpha_done = lodepng_can_have_alpha(mode) ? 0 : 1; + + profile->numcolors = 0; + color_tree_init(&profile->tree); + profile->palette = (unsigned char*)lodepng_malloc(1024); + profile->maxnumcolors = 257; + if(lodepng_get_bpp(mode) <= 8) + { + int bpp = lodepng_get_bpp(mode); + profile->maxnumcolors = bpp == 1 ? 2 : (bpp == 2 ? 4 : (bpp == 4 ? 16 : 256)); + } + profile->numcolors_done = 0; + + profile->greybits = 1; + profile->greybits_done = lodepng_get_bpp(mode) == 1 ? 1 : 0; +} + +static void color_profile_cleanup(ColorProfile* profile) +{ + color_tree_cleanup(&profile->tree); + lodepng_free(profile->palette); +} + +/*function used for debug purposes with C++*/ +/*void printColorProfile(ColorProfile* p) +{ + std::cout << "sixteenbit: " << (int)p->sixteenbit << std::endl; + std::cout << "sixteenbit_done: " << (int)p->sixteenbit_done << std::endl; + std::cout << "colored: " << (int)p->colored << std::endl; + std::cout << "colored_done: " << (int)p->colored_done << std::endl; + std::cout << "key: " << (int)p->key << std::endl; + std::cout << "key_r: " << (int)p->key_r << std::endl; + std::cout << "key_g: " << (int)p->key_g << std::endl; + std::cout << "key_b: " << (int)p->key_b << std::endl; + std::cout << "alpha: " << (int)p->alpha << std::endl; + std::cout << "alpha_done: " << (int)p->alpha_done << std::endl; + std::cout << "numcolors: " << (int)p->numcolors << std::endl; + std::cout << "maxnumcolors: " << (int)p->maxnumcolors << std::endl; + std::cout << "numcolors_done: " << (int)p->numcolors_done << std::endl; + std::cout << "greybits: " << (int)p->greybits << std::endl; + std::cout << "greybits_done: " << (int)p->greybits_done << std::endl; +}*/ + +/*Returns how many bits needed to represent given value (max 8 bit)*/ +unsigned getValueRequiredBits(unsigned short value) +{ + if(value == 0 || value == 255) return 1; + /*The scaling of 2-bit and 4-bit values uses multiples of 85 and 17*/ + if(value % 17 == 0) return value % 85 == 0 ? 2 : 4; + return 8; +} + +/*profile must already have been inited with mode. +It's ok to set some parameters of profile to done already.*/ +static unsigned get_color_profile(ColorProfile* profile, + const unsigned char* in, + size_t numpixels /*must be full image size, for certain filesize based choices*/, + const LodePNGColorMode* mode, + unsigned fix_png) +{ + unsigned error = 0; + size_t i; + + if(mode->bitdepth == 16) + { + for(i = 0; i < numpixels; i++) + { + unsigned short r, g, b, a; + error = getPixelColorRGBA16(&r, &g, &b, &a, in, i, mode); + if(error) break; + + /*a color is considered good for 8-bit if the first byte and the second byte are equal, + (so if it's divisible through 257), NOT necessarily if the second byte is 0*/ + if(!profile->sixteenbit_done + && (((r & 255) != ((r >> 8) & 255)) + || ((g & 255) != ((g >> 8) & 255)) + || ((b & 255) != ((b >> 8) & 255)))) + { + profile->sixteenbit = 1; + profile->sixteenbit_done = 1; + profile->greybits_done = 1; /*greybits is not applicable anymore at 16-bit*/ + profile->numcolors_done = 1; /*counting colors no longer useful, palette doesn't support 16-bit*/ + } + + if(!profile->colored_done && (r != g || r != b)) + { + profile->colored = 1; + profile->colored_done = 1; + profile->greybits_done = 1; /*greybits is not applicable anymore*/ + } + + if(!profile->alpha_done && a != 65535) + { + /*only use color key if numpixels large enough to justify tRNS chunk size*/ + if(a == 0 && numpixels > 16 && !(profile->key && (r != profile->key_r || g != profile->key_g || b != profile->key_b))) + { + if(!profile->alpha && !profile->key) + { + profile->key = 1; + profile->key_r = r; + profile->key_g = g; + profile->key_b = b; + } + } + else + { + profile->alpha = 1; + profile->alpha_done = 1; + profile->greybits_done = 1; /*greybits is not applicable anymore*/ + } + } + + /* Color key cannot be used if an opaque pixel also has that RGB color. */ + if(!profile->alpha_done && a == 65535 && profile->key + && r == profile->key_r && g == profile->key_g && b == profile->key_b) + { + profile->alpha = 1; + profile->alpha_done = 1; + profile->greybits_done = 1; /*greybits is not applicable anymore*/ + } + + if(!profile->greybits_done) + { + /*assuming 8-bit r, this test does not care about 16-bit*/ + unsigned bits = getValueRequiredBits(r); + if(bits > profile->greybits) profile->greybits = bits; + if(profile->greybits >= 8) profile->greybits_done = 1; + } + + if(!profile->numcolors_done) + { + /*assuming 8-bit rgba, this test does not care about 16-bit*/ + if(!color_tree_has(&profile->tree, (unsigned char)r, (unsigned char)g, (unsigned char)b, (unsigned char)a)) + { + color_tree_add(&profile->tree, (unsigned char)r, (unsigned char)g, (unsigned char)b, (unsigned char)a, + profile->numcolors); + if(profile->numcolors < 256) + { + unsigned char* p = profile->palette; + unsigned i = profile->numcolors; + p[i * 4 + 0] = (unsigned char)r; + p[i * 4 + 1] = (unsigned char)g; + p[i * 4 + 2] = (unsigned char)b; + p[i * 4 + 3] = (unsigned char)a; + } + profile->numcolors++; + if(profile->numcolors >= profile->maxnumcolors) profile->numcolors_done = 1; + } + } + + if(profile->alpha_done && profile->numcolors_done + && profile->colored_done && profile->sixteenbit_done && profile->greybits_done) + { + break; + } + }; + } + else /* < 16-bit */ + { + for(i = 0; i < numpixels; i++) + { + unsigned char r = 0, g = 0, b = 0, a = 0; + error = getPixelColorRGBA8(&r, &g, &b, &a, in, i, mode, fix_png); + if(error) break; + + if(!profile->colored_done && (r != g || r != b)) + { + profile->colored = 1; + profile->colored_done = 1; + profile->greybits_done = 1; /*greybits is not applicable anymore*/ + } + + if(!profile->alpha_done && a != 255) + { + if(a == 0 && !(profile->key && (r != profile->key_r || g != profile->key_g || b != profile->key_b))) + { + if(!profile->key) + { + profile->key = 1; + profile->key_r = r; + profile->key_g = g; + profile->key_b = b; + } + } + else + { + profile->alpha = 1; + profile->alpha_done = 1; + profile->greybits_done = 1; /*greybits is not applicable anymore*/ + } + } + + /* Color key cannot be used if an opaque pixel also has that RGB color. */ + if(!profile->alpha_done && a == 255 && profile->key + && r == profile->key_r && g == profile->key_g && b == profile->key_b) + { + profile->alpha = 1; + profile->alpha_done = 1; + profile->greybits_done = 1; /*greybits is not applicable anymore*/ + } + + if(!profile->greybits_done) + { + unsigned bits = getValueRequiredBits(r); + if(bits > profile->greybits) profile->greybits = bits; + if(profile->greybits >= 8) profile->greybits_done = 1; + } + + if(!profile->numcolors_done) + { + if(!color_tree_has(&profile->tree, r, g, b, a)) + { + + color_tree_add(&profile->tree, r, g, b, a, profile->numcolors); + if(profile->numcolors < 256) + { + unsigned char* p = profile->palette; + unsigned i = profile->numcolors; + p[i * 4 + 0] = r; + p[i * 4 + 1] = g; + p[i * 4 + 2] = b; + p[i * 4 + 3] = a; + } + profile->numcolors++; + if(profile->numcolors >= profile->maxnumcolors) profile->numcolors_done = 1; + } + } + + if(profile->alpha_done && profile->numcolors_done && profile->colored_done && profile->greybits_done) + { + break; + } + }; + } + + /*make the profile's key always 16-bit for consistency*/ + if(mode->bitdepth < 16) + { + /*repeat each byte twice*/ + profile->key_r *= 257; + profile->key_g *= 257; + profile->key_b *= 257; + } + + return error; +} + +static void setColorKeyFrom16bit(LodePNGColorMode* mode_out, unsigned r, unsigned g, unsigned b, unsigned bitdepth) +{ + unsigned mask = (1 << bitdepth) - 1; + mode_out->key_defined = 1; + mode_out->key_r = r & mask; + mode_out->key_g = g & mask; + mode_out->key_b = b & mask; +} + +/*updates values of mode with a potentially smaller color model. mode_out should +contain the user chosen color model, but will be overwritten with the new chosen one.*/ +unsigned lodepng_auto_choose_color(LodePNGColorMode* mode_out, + const unsigned char* image, unsigned w, unsigned h, + const LodePNGColorMode* mode_in, + LodePNGAutoConvert auto_convert) +{ + ColorProfile profile; + unsigned error = 0; + int no_nibbles = auto_convert == LAC_AUTO_NO_NIBBLES || auto_convert == LAC_AUTO_NO_NIBBLES_NO_PALETTE; + int no_palette = auto_convert == LAC_AUTO_NO_PALETTE || auto_convert == LAC_AUTO_NO_NIBBLES_NO_PALETTE; + + if(auto_convert == LAC_ALPHA) + { + if(mode_out->colortype != LCT_RGBA && mode_out->colortype != LCT_GREY_ALPHA) return 0; + } + + color_profile_init(&profile, mode_in); + if(auto_convert == LAC_ALPHA) + { + profile.colored_done = 1; + profile.greybits_done = 1; + profile.numcolors_done = 1; + profile.sixteenbit_done = 1; + } + error = get_color_profile(&profile, image, w * h, mode_in, 0 /*fix_png*/); + if(!error && auto_convert == LAC_ALPHA) + { + if(!profile.alpha) + { + mode_out->colortype = (mode_out->colortype == LCT_RGBA ? LCT_RGB : LCT_GREY); + if(profile.key) setColorKeyFrom16bit(mode_out, profile.key_r, profile.key_g, profile.key_b, mode_out->bitdepth); + } + } + else if(!error && auto_convert != LAC_ALPHA) + { + mode_out->key_defined = 0; + + if(profile.sixteenbit) + { + mode_out->bitdepth = 16; + if(profile.alpha) + { + mode_out->colortype = profile.colored ? LCT_RGBA : LCT_GREY_ALPHA; + } + else + { + mode_out->colortype = profile.colored ? LCT_RGB : LCT_GREY; + if(profile.key) setColorKeyFrom16bit(mode_out, profile.key_r, profile.key_g, profile.key_b, mode_out->bitdepth); + } + } + else /*less than 16 bits per channel*/ + { + /*don't add palette overhead if image hasn't got a lot of pixels*/ + unsigned n = profile.numcolors; + int palette_ok = !no_palette && n <= 256 && (n * 2 < w * h); + unsigned palettebits = n <= 2 ? 1 : (n <= 4 ? 2 : (n <= 16 ? 4 : 8)); + int grey_ok = !profile.colored && !profile.alpha; /*grey without alpha, with potentially low bits*/ + if(palette_ok || grey_ok) + { + if(!palette_ok || (grey_ok && profile.greybits <= palettebits)) + { + unsigned grey = profile.key_r; + mode_out->colortype = LCT_GREY; + mode_out->bitdepth = profile.greybits; + if(profile.key) setColorKeyFrom16bit(mode_out, grey, grey, grey, mode_out->bitdepth); + } + else + { + /*fill in the palette*/ + unsigned i; + unsigned char* p = profile.palette; + /*remove potential earlier palette*/ + lodepng_palette_clear(mode_out); + for(i = 0; i < profile.numcolors; i++) + { + error = lodepng_palette_add(mode_out, p[i * 4 + 0], p[i * 4 + 1], p[i * 4 + 2], p[i * 4 + 3]); + if(error) break; + } + + mode_out->colortype = LCT_PALETTE; + mode_out->bitdepth = palettebits; + } + } + else /*8-bit per channel*/ + { + mode_out->bitdepth = 8; + if(profile.alpha) + { + mode_out->colortype = profile.colored ? LCT_RGBA : LCT_GREY_ALPHA; + } + else + { + mode_out->colortype = profile.colored ? LCT_RGB : LCT_GREY /*LCT_GREY normally won't occur, already done earlier*/; + if(profile.key) setColorKeyFrom16bit(mode_out, profile.key_r, profile.key_g, profile.key_b, mode_out->bitdepth); + } + } + } + } + + color_profile_cleanup(&profile); + + if(mode_out->colortype == LCT_PALETTE && mode_in->palettesize == mode_out->palettesize) + { + /*In this case keep the palette order of the input, so that the user can choose an optimal one*/ + size_t i; + for(i = 0; i < mode_in->palettesize * 4; i++) + { + mode_out->palette[i] = mode_in->palette[i]; + } + } + + if(no_nibbles && mode_out->bitdepth < 8) + { + /*palette can keep its small amount of colors, as long as no indices use it*/ + mode_out->bitdepth = 8; + } + + return error; +} + +#endif /* #ifdef LODEPNG_COMPILE_ENCODER */ + +/* +Paeth predicter, used by PNG filter type 4 +The parameters are of type short, but should come from unsigned chars, the shorts +are only needed to make the paeth calculation correct. +*/ +static unsigned char paethPredictor(short a, short b, short c) +{ + short pa = abs(b - c); + short pb = abs(a - c); + short pc = abs(a + b - c - c); + + if(pc < pa && pc < pb) return (unsigned char)c; + else if(pb < pa) return (unsigned char)b; + else return (unsigned char)a; +} + +/*shared values used by multiple Adam7 related functions*/ + +static const unsigned ADAM7_IX[7] = { 0, 4, 0, 2, 0, 1, 0 }; /*x start values*/ +static const unsigned ADAM7_IY[7] = { 0, 0, 4, 0, 2, 0, 1 }; /*y start values*/ +static const unsigned ADAM7_DX[7] = { 8, 8, 4, 4, 2, 2, 1 }; /*x delta values*/ +static const unsigned ADAM7_DY[7] = { 8, 8, 8, 4, 4, 2, 2 }; /*y delta values*/ + +/* +Outputs various dimensions and positions in the image related to the Adam7 reduced images. +passw: output containing the width of the 7 passes +passh: output containing the height of the 7 passes +filter_passstart: output containing the index of the start and end of each + reduced image with filter bytes +padded_passstart output containing the index of the start and end of each + reduced image when without filter bytes but with padded scanlines +passstart: output containing the index of the start and end of each reduced + image without padding between scanlines, but still padding between the images +w, h: width and height of non-interlaced image +bpp: bits per pixel +"padded" is only relevant if bpp is less than 8 and a scanline or image does not + end at a full byte +*/ +static void Adam7_getpassvalues(unsigned passw[7], unsigned passh[7], size_t filter_passstart[8], + size_t padded_passstart[8], size_t passstart[8], unsigned w, unsigned h, unsigned bpp) +{ + /*the passstart values have 8 values: the 8th one indicates the byte after the end of the 7th (= last) pass*/ + unsigned i; + + /*calculate width and height in pixels of each pass*/ + for(i = 0; i < 7; i++) + { + passw[i] = (w + ADAM7_DX[i] - ADAM7_IX[i] - 1) / ADAM7_DX[i]; + passh[i] = (h + ADAM7_DY[i] - ADAM7_IY[i] - 1) / ADAM7_DY[i]; + if(passw[i] == 0) passh[i] = 0; + if(passh[i] == 0) passw[i] = 0; + } + + filter_passstart[0] = padded_passstart[0] = passstart[0] = 0; + for(i = 0; i < 7; i++) + { + /*if passw[i] is 0, it's 0 bytes, not 1 (no filtertype-byte)*/ + filter_passstart[i + 1] = filter_passstart[i] + + ((passw[i] && passh[i]) ? passh[i] * (1 + (passw[i] * bpp + 7) / 8) : 0); + /*bits padded if needed to fill full byte at end of each scanline*/ + padded_passstart[i + 1] = padded_passstart[i] + passh[i] * ((passw[i] * bpp + 7) / 8); + /*only padded at end of reduced image*/ + passstart[i + 1] = passstart[i] + (passh[i] * passw[i] * bpp + 7) / 8; + } +} + +#ifdef LODEPNG_COMPILE_DECODER + +/* ////////////////////////////////////////////////////////////////////////// */ +/* / PNG Decoder / */ +/* ////////////////////////////////////////////////////////////////////////// */ + +/*read the information from the header and store it in the LodePNGInfo. return value is error*/ +unsigned lodepng_inspect(unsigned* w, unsigned* h, LodePNGState* state, + const unsigned char* in, size_t insize) +{ + LodePNGInfo* info = &state->info_png; + if(insize == 0 || in == 0) + { + CERROR_RETURN_ERROR(state->error, 48); /*error: the given data is empty*/ + } + if(insize < 29) + { + CERROR_RETURN_ERROR(state->error, 27); /*error: the data length is smaller than the length of a PNG header*/ + } + + /*when decoding a new PNG image, make sure all parameters created after previous decoding are reset*/ + lodepng_info_cleanup(info); + lodepng_info_init(info); + + if(in[0] != 137 || in[1] != 80 || in[2] != 78 || in[3] != 71 + || in[4] != 13 || in[5] != 10 || in[6] != 26 || in[7] != 10) + { + CERROR_RETURN_ERROR(state->error, 28); /*error: the first 8 bytes are not the correct PNG signature*/ + } + if(in[12] != 'I' || in[13] != 'H' || in[14] != 'D' || in[15] != 'R') + { + CERROR_RETURN_ERROR(state->error, 29); /*error: it doesn't start with a IHDR chunk!*/ + } + + /*read the values given in the header*/ + *w = lodepng_read32bitInt(&in[16]); + *h = lodepng_read32bitInt(&in[20]); + info->color.bitdepth = in[24]; + info->color.colortype = (LodePNGColorType)in[25]; + info->compression_method = in[26]; + info->filter_method = in[27]; + info->interlace_method = in[28]; + + if(!state->decoder.ignore_crc) + { + unsigned CRC = lodepng_read32bitInt(&in[29]); + unsigned checksum = lodepng_crc32(&in[12], 17); + if(CRC != checksum) + { + CERROR_RETURN_ERROR(state->error, 57); /*invalid CRC*/ + } + } + + /*error: only compression method 0 is allowed in the specification*/ + if(info->compression_method != 0) CERROR_RETURN_ERROR(state->error, 32); + /*error: only filter method 0 is allowed in the specification*/ + if(info->filter_method != 0) CERROR_RETURN_ERROR(state->error, 33); + /*error: only interlace methods 0 and 1 exist in the specification*/ + if(info->interlace_method > 1) CERROR_RETURN_ERROR(state->error, 34); + + state->error = checkColorValidity(info->color.colortype, info->color.bitdepth); + return state->error; +} + +static unsigned unfilterScanline(unsigned char* recon, const unsigned char* scanline, const unsigned char* precon, + size_t bytewidth, unsigned char filterType, size_t length) +{ + /* + For PNG filter method 0 + unfilter a PNG image scanline by scanline. when the pixels are smaller than 1 byte, + the filter works byte per byte (bytewidth = 1) + precon is the previous unfiltered scanline, recon the result, scanline the current one + the incoming scanlines do NOT include the filtertype byte, that one is given in the parameter filterType instead + recon and scanline MAY be the same memory address! precon must be disjoint. + */ + + size_t i; + switch(filterType) + { + case 0: + for(i = 0; i < length; i++) recon[i] = scanline[i]; + break; + case 1: + for(i = 0; i < bytewidth; i++) recon[i] = scanline[i]; + for(i = bytewidth; i < length; i++) recon[i] = scanline[i] + recon[i - bytewidth]; + break; + case 2: + if(precon) + { + for(i = 0; i < length; i++) recon[i] = scanline[i] + precon[i]; + } + else + { + for(i = 0; i < length; i++) recon[i] = scanline[i]; + } + break; + case 3: + if(precon) + { + for(i = 0; i < bytewidth; i++) recon[i] = scanline[i] + precon[i] / 2; + for(i = bytewidth; i < length; i++) recon[i] = scanline[i] + ((recon[i - bytewidth] + precon[i]) / 2); + } + else + { + for(i = 0; i < bytewidth; i++) recon[i] = scanline[i]; + for(i = bytewidth; i < length; i++) recon[i] = scanline[i] + recon[i - bytewidth] / 2; + } + break; + case 4: + if(precon) + { + for(i = 0; i < bytewidth; i++) + { + recon[i] = (scanline[i] + precon[i]); /*paethPredictor(0, precon[i], 0) is always precon[i]*/ + } + for(i = bytewidth; i < length; i++) + { + recon[i] = (scanline[i] + paethPredictor(recon[i - bytewidth], precon[i], precon[i - bytewidth])); + } + } + else + { + for(i = 0; i < bytewidth; i++) + { + recon[i] = scanline[i]; + } + for(i = bytewidth; i < length; i++) + { + /*paethPredictor(recon[i - bytewidth], 0, 0) is always recon[i - bytewidth]*/ + recon[i] = (scanline[i] + recon[i - bytewidth]); + } + } + break; + default: return 36; /*error: unexisting filter type given*/ + } + return 0; +} + +static unsigned unfilter(unsigned char* out, const unsigned char* in, unsigned w, unsigned h, unsigned bpp) +{ + /* + For PNG filter method 0 + this function unfilters a single image (e.g. without interlacing this is called once, with Adam7 seven times) + out must have enough bytes allocated already, in must have the scanlines + 1 filtertype byte per scanline + w and h are image dimensions or dimensions of reduced image, bpp is bits per pixel + in and out are allowed to be the same memory address (but aren't the same size since in has the extra filter bytes) + */ + + unsigned y; + unsigned char* prevline = 0; + + /*bytewidth is used for filtering, is 1 when bpp < 8, number of bytes per pixel otherwise*/ + size_t bytewidth = (bpp + 7) / 8; + size_t linebytes = (w * bpp + 7) / 8; + + for(y = 0; y < h; y++) + { + size_t outindex = linebytes * y; + size_t inindex = (1 + linebytes) * y; /*the extra filterbyte added to each row*/ + unsigned char filterType = in[inindex]; + + CERROR_TRY_RETURN(unfilterScanline(&out[outindex], &in[inindex + 1], prevline, bytewidth, filterType, linebytes)); + + prevline = &out[outindex]; + } + + return 0; +} + +/* +in: Adam7 interlaced image, with no padding bits between scanlines, but between + reduced images so that each reduced image starts at a byte. +out: the same pixels, but re-ordered so that they're now a non-interlaced image with size w*h +bpp: bits per pixel +out has the following size in bits: w * h * bpp. +in is possibly bigger due to padding bits between reduced images. +out must be big enough AND must be 0 everywhere if bpp < 8 in the current implementation +(because that's likely a little bit faster) +NOTE: comments about padding bits are only relevant if bpp < 8 +*/ +static void Adam7_deinterlace(unsigned char* out, const unsigned char* in, unsigned w, unsigned h, unsigned bpp) +{ + unsigned passw[7], passh[7]; + size_t filter_passstart[8], padded_passstart[8], passstart[8]; + unsigned i; + + Adam7_getpassvalues(passw, passh, filter_passstart, padded_passstart, passstart, w, h, bpp); + + if(bpp >= 8) + { + for(i = 0; i < 7; i++) + { + unsigned x, y, b; + size_t bytewidth = bpp / 8; + for(y = 0; y < passh[i]; y++) + for(x = 0; x < passw[i]; x++) + { + size_t pixelinstart = passstart[i] + (y * passw[i] + x) * bytewidth; + size_t pixeloutstart = ((ADAM7_IY[i] + y * ADAM7_DY[i]) * w + ADAM7_IX[i] + x * ADAM7_DX[i]) * bytewidth; + for(b = 0; b < bytewidth; b++) + { + out[pixeloutstart + b] = in[pixelinstart + b]; + } + } + } + } + else /*bpp < 8: Adam7 with pixels < 8 bit is a bit trickier: with bit pointers*/ + { + for(i = 0; i < 7; i++) + { + unsigned x, y, b; + unsigned ilinebits = bpp * passw[i]; + unsigned olinebits = bpp * w; + size_t obp, ibp; /*bit pointers (for out and in buffer)*/ + for(y = 0; y < passh[i]; y++) + for(x = 0; x < passw[i]; x++) + { + ibp = (8 * passstart[i]) + (y * ilinebits + x * bpp); + obp = (ADAM7_IY[i] + y * ADAM7_DY[i]) * olinebits + (ADAM7_IX[i] + x * ADAM7_DX[i]) * bpp; + for(b = 0; b < bpp; b++) + { + unsigned char bit = readBitFromReversedStream(&ibp, in); + /*note that this function assumes the out buffer is completely 0, use setBitOfReversedStream otherwise*/ + setBitOfReversedStream0(&obp, out, bit); + } + } + } + } +} + +static void removePaddingBits(unsigned char* out, const unsigned char* in, + size_t olinebits, size_t ilinebits, unsigned h) +{ + /* + After filtering there are still padding bits if scanlines have non multiple of 8 bit amounts. They need + to be removed (except at last scanline of (Adam7-reduced) image) before working with pure image buffers + for the Adam7 code, the color convert code and the output to the user. + in and out are allowed to be the same buffer, in may also be higher but still overlapping; in must + have >= ilinebits*h bits, out must have >= olinebits*h bits, olinebits must be <= ilinebits + also used to move bits after earlier such operations happened, e.g. in a sequence of reduced images from Adam7 + only useful if (ilinebits - olinebits) is a value in the range 1..7 + */ + unsigned y; + size_t diff = ilinebits - olinebits; + size_t ibp = 0, obp = 0; /*input and output bit pointers*/ + for(y = 0; y < h; y++) + { + size_t x; + for(x = 0; x < olinebits; x++) + { + unsigned char bit = readBitFromReversedStream(&ibp, in); + setBitOfReversedStream(&obp, out, bit); + } + ibp += diff; + } +} + +/*out must be buffer big enough to contain full image, and in must contain the full decompressed data from +the IDAT chunks (with filter index bytes and possible padding bits) +return value is error*/ +static unsigned postProcessScanlines(unsigned char* out, unsigned char* in, + unsigned w, unsigned h, const LodePNGInfo* info_png) +{ + /* + This function converts the filtered-padded-interlaced data into pure 2D image buffer with the PNG's colortype. + Steps: + *) if no Adam7: 1) unfilter 2) remove padding bits (= posible extra bits per scanline if bpp < 8) + *) if adam7: 1) 7x unfilter 2) 7x remove padding bits 3) Adam7_deinterlace + NOTE: the in buffer will be overwritten with intermediate data! + */ + unsigned bpp = lodepng_get_bpp(&info_png->color); + if(bpp == 0) return 31; /*error: invalid colortype*/ + + if(info_png->interlace_method == 0) + { + if(bpp < 8 && w * bpp != ((w * bpp + 7) / 8) * 8) + { + CERROR_TRY_RETURN(unfilter(in, in, w, h, bpp)); + removePaddingBits(out, in, w * bpp, ((w * bpp + 7) / 8) * 8, h); + } + /*we can immediatly filter into the out buffer, no other steps needed*/ + else CERROR_TRY_RETURN(unfilter(out, in, w, h, bpp)); + } + else /*interlace_method is 1 (Adam7)*/ + { + unsigned passw[7], passh[7]; size_t filter_passstart[8], padded_passstart[8], passstart[8]; + unsigned i; + + Adam7_getpassvalues(passw, passh, filter_passstart, padded_passstart, passstart, w, h, bpp); + + for(i = 0; i < 7; i++) + { + CERROR_TRY_RETURN(unfilter(&in[padded_passstart[i]], &in[filter_passstart[i]], passw[i], passh[i], bpp)); + /*TODO: possible efficiency improvement: if in this reduced image the bits fit nicely in 1 scanline, + move bytes instead of bits or move not at all*/ + if(bpp < 8) + { + /*remove padding bits in scanlines; after this there still may be padding + bits between the different reduced images: each reduced image still starts nicely at a byte*/ + removePaddingBits(&in[passstart[i]], &in[padded_passstart[i]], passw[i] * bpp, + ((passw[i] * bpp + 7) / 8) * 8, passh[i]); + } + } + + Adam7_deinterlace(out, in, w, h, bpp); + } + + return 0; +} + +static unsigned readChunk_PLTE(LodePNGColorMode* color, const unsigned char* data, size_t chunkLength) +{ + unsigned pos = 0, i; + if(color->palette) lodepng_free(color->palette); + color->palettesize = chunkLength / 3; + color->palette = (unsigned char*)lodepng_malloc(4 * color->palettesize); + if(!color->palette && color->palettesize) + { + color->palettesize = 0; + return 83; /*alloc fail*/ + } + if(color->palettesize > 256) return 38; /*error: palette too big*/ + + for(i = 0; i < color->palettesize; i++) + { + color->palette[4 * i + 0] = data[pos++]; /*R*/ + color->palette[4 * i + 1] = data[pos++]; /*G*/ + color->palette[4 * i + 2] = data[pos++]; /*B*/ + color->palette[4 * i + 3] = 255; /*alpha*/ + } + + return 0; /* OK */ +} + +static unsigned readChunk_tRNS(LodePNGColorMode* color, const unsigned char* data, size_t chunkLength) +{ + unsigned i; + if(color->colortype == LCT_PALETTE) + { + /*error: more alpha values given than there are palette entries*/ + if(chunkLength > color->palettesize) return 38; + + for(i = 0; i < chunkLength; i++) color->palette[4 * i + 3] = data[i]; + } + else if(color->colortype == LCT_GREY) + { + /*error: this chunk must be 2 bytes for greyscale image*/ + if(chunkLength != 2) return 30; + + color->key_defined = 1; + color->key_r = color->key_g = color->key_b = 256 * data[0] + data[1]; + } + else if(color->colortype == LCT_RGB) + { + /*error: this chunk must be 6 bytes for RGB image*/ + if(chunkLength != 6) return 41; + + color->key_defined = 1; + color->key_r = 256 * data[0] + data[1]; + color->key_g = 256 * data[2] + data[3]; + color->key_b = 256 * data[4] + data[5]; + } + else return 42; /*error: tRNS chunk not allowed for other color models*/ + + return 0; /* OK */ +} + + +#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS +/*background color chunk (bKGD)*/ +static unsigned readChunk_bKGD(LodePNGInfo* info, const unsigned char* data, size_t chunkLength) +{ + if(info->color.colortype == LCT_PALETTE) + { + /*error: this chunk must be 1 byte for indexed color image*/ + if(chunkLength != 1) return 43; + + info->background_defined = 1; + info->background_r = info->background_g = info->background_b = data[0]; + } + else if(info->color.colortype == LCT_GREY || info->color.colortype == LCT_GREY_ALPHA) + { + /*error: this chunk must be 2 bytes for greyscale image*/ + if(chunkLength != 2) return 44; + + info->background_defined = 1; + info->background_r = info->background_g = info->background_b + = 256 * data[0] + data[1]; + } + else if(info->color.colortype == LCT_RGB || info->color.colortype == LCT_RGBA) + { + /*error: this chunk must be 6 bytes for greyscale image*/ + if(chunkLength != 6) return 45; + + info->background_defined = 1; + info->background_r = 256 * data[0] + data[1]; + info->background_g = 256 * data[2] + data[3]; + info->background_b = 256 * data[4] + data[5]; + } + + return 0; /* OK */ +} + +/*text chunk (tEXt)*/ +static unsigned readChunk_tEXt(LodePNGInfo* info, const unsigned char* data, size_t chunkLength) +{ + unsigned error = 0; + char *key = 0, *str = 0; + unsigned i; + + while(!error) /*not really a while loop, only used to break on error*/ + { + unsigned length, string2_begin; + + length = 0; + while(length < chunkLength && data[length] != 0) length++; + /*even though it's not allowed by the standard, no error is thrown if + there's no null termination char, if the text is empty*/ + if(length < 1 || length > 79) CERROR_BREAK(error, 89); /*keyword too short or long*/ + + key = (char*)lodepng_malloc(length + 1); + if(!key) CERROR_BREAK(error, 83); /*alloc fail*/ + + key[length] = 0; + for(i = 0; i < length; i++) key[i] = data[i]; + + string2_begin = length + 1; /*skip keyword null terminator*/ + + length = chunkLength < string2_begin ? 0 : chunkLength - string2_begin; + str = (char*)lodepng_malloc(length + 1); + if(!str) CERROR_BREAK(error, 83); /*alloc fail*/ + + str[length] = 0; + for(i = 0; i < length; i++) str[i] = data[string2_begin + i]; + + error = lodepng_add_text(info, key, str); + + break; + } + + lodepng_free(key); + lodepng_free(str); + + return error; +} + +/*compressed text chunk (zTXt)*/ +static unsigned readChunk_zTXt(LodePNGInfo* info, const LodePNGDecompressSettings* zlibsettings, + const unsigned char* data, size_t chunkLength) +{ + unsigned error = 0; + unsigned i; + + unsigned length, string2_begin; + char *key = 0; + ucvector decoded; + + ucvector_init(&decoded); + + while(!error) /*not really a while loop, only used to break on error*/ + { + for(length = 0; length < chunkLength && data[length] != 0; length++) ; + if(length + 2 >= chunkLength) CERROR_BREAK(error, 75); /*no null termination, corrupt?*/ + if(length < 1 || length > 79) CERROR_BREAK(error, 89); /*keyword too short or long*/ + + key = (char*)lodepng_malloc(length + 1); + if(!key) CERROR_BREAK(error, 83); /*alloc fail*/ + + key[length] = 0; + for(i = 0; i < length; i++) key[i] = data[i]; + + if(data[length + 1] != 0) CERROR_BREAK(error, 72); /*the 0 byte indicating compression must be 0*/ + + string2_begin = length + 2; + if(string2_begin > chunkLength) CERROR_BREAK(error, 75); /*no null termination, corrupt?*/ + + length = chunkLength - string2_begin; + /*will fail if zlib error, e.g. if length is too small*/ + error = zlib_decompress(&decoded.data, &decoded.size, + (unsigned char*)(&data[string2_begin]), + length, zlibsettings); + if(error) break; + ucvector_push_back(&decoded, 0); + + error = lodepng_add_text(info, key, (char*)decoded.data); + + break; + } + + lodepng_free(key); + ucvector_cleanup(&decoded); + + return error; +} + +/*international text chunk (iTXt)*/ +static unsigned readChunk_iTXt(LodePNGInfo* info, const LodePNGDecompressSettings* zlibsettings, + const unsigned char* data, size_t chunkLength) +{ + unsigned error = 0; + unsigned i; + + unsigned length, begin, compressed; + char *key = 0, *langtag = 0, *transkey = 0; + ucvector decoded; + ucvector_init(&decoded); + + while(!error) /*not really a while loop, only used to break on error*/ + { + /*Quick check if the chunk length isn't too small. Even without check + it'd still fail with other error checks below if it's too short. This just gives a different error code.*/ + if(chunkLength < 5) CERROR_BREAK(error, 30); /*iTXt chunk too short*/ + + /*read the key*/ + for(length = 0; length < chunkLength && data[length] != 0; length++) ; + if(length + 3 >= chunkLength) CERROR_BREAK(error, 75); /*no null termination char, corrupt?*/ + if(length < 1 || length > 79) CERROR_BREAK(error, 89); /*keyword too short or long*/ + + key = (char*)lodepng_malloc(length + 1); + if(!key) CERROR_BREAK(error, 83); /*alloc fail*/ + + key[length] = 0; + for(i = 0; i < length; i++) key[i] = data[i]; + + /*read the compression method*/ + compressed = data[length + 1]; + if(data[length + 2] != 0) CERROR_BREAK(error, 72); /*the 0 byte indicating compression must be 0*/ + + /*even though it's not allowed by the standard, no error is thrown if + there's no null termination char, if the text is empty for the next 3 texts*/ + + /*read the langtag*/ + begin = length + 3; + length = 0; + for(i = begin; i < chunkLength && data[i] != 0; i++) length++; + + langtag = (char*)lodepng_malloc(length + 1); + if(!langtag) CERROR_BREAK(error, 83); /*alloc fail*/ + + langtag[length] = 0; + for(i = 0; i < length; i++) langtag[i] = data[begin + i]; + + /*read the transkey*/ + begin += length + 1; + length = 0; + for(i = begin; i < chunkLength && data[i] != 0; i++) length++; + + transkey = (char*)lodepng_malloc(length + 1); + if(!transkey) CERROR_BREAK(error, 83); /*alloc fail*/ + + transkey[length] = 0; + for(i = 0; i < length; i++) transkey[i] = data[begin + i]; + + /*read the actual text*/ + begin += length + 1; + + length = chunkLength < begin ? 0 : chunkLength - begin; + + if(compressed) + { + /*will fail if zlib error, e.g. if length is too small*/ + error = zlib_decompress(&decoded.data, &decoded.size, + (unsigned char*)(&data[begin]), + length, zlibsettings); + if(error) break; + if(decoded.allocsize < decoded.size) decoded.allocsize = decoded.size; + ucvector_push_back(&decoded, 0); + } + else + { + if(!ucvector_resize(&decoded, length + 1)) CERROR_BREAK(error, 83 /*alloc fail*/); + + decoded.data[length] = 0; + for(i = 0; i < length; i++) decoded.data[i] = data[begin + i]; + } + + error = lodepng_add_itext(info, key, langtag, transkey, (char*)decoded.data); + + break; + } + + lodepng_free(key); + lodepng_free(langtag); + lodepng_free(transkey); + ucvector_cleanup(&decoded); + + return error; +} + +static unsigned readChunk_tIME(LodePNGInfo* info, const unsigned char* data, size_t chunkLength) +{ + if(chunkLength != 7) return 73; /*invalid tIME chunk size*/ + + info->time_defined = 1; + info->time.year = 256 * data[0] + data[+ 1]; + info->time.month = data[2]; + info->time.day = data[3]; + info->time.hour = data[4]; + info->time.minute = data[5]; + info->time.second = data[6]; + + return 0; /* OK */ +} + +static unsigned readChunk_pHYs(LodePNGInfo* info, const unsigned char* data, size_t chunkLength) +{ + if(chunkLength != 9) return 74; /*invalid pHYs chunk size*/ + + info->phys_defined = 1; + info->phys_x = 16777216 * data[0] + 65536 * data[1] + 256 * data[2] + data[3]; + info->phys_y = 16777216 * data[4] + 65536 * data[5] + 256 * data[6] + data[7]; + info->phys_unit = data[8]; + + return 0; /* OK */ +} +#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ + +/*read a PNG, the result will be in the same color type as the PNG (hence "generic")*/ +static void decodeGeneric(unsigned char** out, unsigned* w, unsigned* h, + LodePNGState* state, + const unsigned char* in, size_t insize) +{ + unsigned char IEND = 0; + const unsigned char* chunk; + size_t i; + ucvector idat; /*the data from idat chunks*/ + ucvector scanlines; + + /*for unknown chunk order*/ + unsigned unknown = 0; +#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS + unsigned critical_pos = 1; /*1 = after IHDR, 2 = after PLTE, 3 = after IDAT*/ +#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ + + /*provide some proper output values if error will happen*/ + *out = 0; + + state->error = lodepng_inspect(w, h, state, in, insize); /*reads header and resets other parameters in state->info_png*/ + if(state->error) return; + + ucvector_init(&idat); + chunk = &in[33]; /*first byte of the first chunk after the header*/ + + /*loop through the chunks, ignoring unknown chunks and stopping at IEND chunk. + IDAT data is put at the start of the in buffer*/ + while(!IEND && !state->error) + { + unsigned chunkLength; + const unsigned char* data; /*the data in the chunk*/ + + /*error: size of the in buffer too small to contain next chunk*/ + if((size_t)((chunk - in) + 12) > insize || chunk < in) CERROR_BREAK(state->error, 30); + + /*length of the data of the chunk, excluding the length bytes, chunk type and CRC bytes*/ + chunkLength = lodepng_chunk_length(chunk); + /*error: chunk length larger than the max PNG chunk size*/ + if(chunkLength > 2147483647) CERROR_BREAK(state->error, 63); + + if((size_t)((chunk - in) + chunkLength + 12) > insize || (chunk + chunkLength + 12) < in) + { + CERROR_BREAK(state->error, 64); /*error: size of the in buffer too small to contain next chunk*/ + } + + data = lodepng_chunk_data_const(chunk); + + /*IDAT chunk, containing compressed image data*/ + if(lodepng_chunk_type_equals(chunk, "IDAT")) + { + size_t oldsize = idat.size; + if(!ucvector_resize(&idat, oldsize + chunkLength)) CERROR_BREAK(state->error, 83 /*alloc fail*/); + for(i = 0; i < chunkLength; i++) idat.data[oldsize + i] = data[i]; +#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS + critical_pos = 3; +#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ + } + /*IEND chunk*/ + else if(lodepng_chunk_type_equals(chunk, "IEND")) + { + IEND = 1; + } + /*palette chunk (PLTE)*/ + else if(lodepng_chunk_type_equals(chunk, "PLTE")) + { + state->error = readChunk_PLTE(&state->info_png.color, data, chunkLength); + if(state->error) break; +#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS + critical_pos = 2; +#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ + } + /*palette transparency chunk (tRNS)*/ + else if(lodepng_chunk_type_equals(chunk, "tRNS")) + { + state->error = readChunk_tRNS(&state->info_png.color, data, chunkLength); + if(state->error) break; + } +#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS + /*background color chunk (bKGD)*/ + else if(lodepng_chunk_type_equals(chunk, "bKGD")) + { + state->error = readChunk_bKGD(&state->info_png, data, chunkLength); + if(state->error) break; + } + /*text chunk (tEXt)*/ + else if(lodepng_chunk_type_equals(chunk, "tEXt")) + { + if(state->decoder.read_text_chunks) + { + state->error = readChunk_tEXt(&state->info_png, data, chunkLength); + if(state->error) break; + } + } + /*compressed text chunk (zTXt)*/ + else if(lodepng_chunk_type_equals(chunk, "zTXt")) + { + if(state->decoder.read_text_chunks) + { + state->error = readChunk_zTXt(&state->info_png, &state->decoder.zlibsettings, data, chunkLength); + if(state->error) break; + } + } + /*international text chunk (iTXt)*/ + else if(lodepng_chunk_type_equals(chunk, "iTXt")) + { + if(state->decoder.read_text_chunks) + { + state->error = readChunk_iTXt(&state->info_png, &state->decoder.zlibsettings, data, chunkLength); + if(state->error) break; + } + } + else if(lodepng_chunk_type_equals(chunk, "tIME")) + { + state->error = readChunk_tIME(&state->info_png, data, chunkLength); + if(state->error) break; + } + else if(lodepng_chunk_type_equals(chunk, "pHYs")) + { + state->error = readChunk_pHYs(&state->info_png, data, chunkLength); + if(state->error) break; + } +#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ + else /*it's not an implemented chunk type, so ignore it: skip over the data*/ + { + /*error: unknown critical chunk (5th bit of first byte of chunk type is 0)*/ + if(!lodepng_chunk_ancillary(chunk)) CERROR_BREAK(state->error, 69); + + unknown = 1; +#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS + if(state->decoder.remember_unknown_chunks) + { + state->error = lodepng_chunk_append(&state->info_png.unknown_chunks_data[critical_pos - 1], + &state->info_png.unknown_chunks_size[critical_pos - 1], chunk); + if(state->error) break; + } +#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ + } + + if(!state->decoder.ignore_crc && !unknown) /*check CRC if wanted, only on known chunk types*/ + { + if(lodepng_chunk_check_crc(chunk)) CERROR_BREAK(state->error, 57); /*invalid CRC*/ + } + + if(!IEND) chunk = lodepng_chunk_next_const(chunk); + } + + ucvector_init(&scanlines); + if(!state->error) + { + /*maximum final image length is already reserved in the vector's length - this is not really necessary*/ + if(!ucvector_resize(&scanlines, lodepng_get_raw_size(*w, *h, &state->info_png.color) + *h)) + { + state->error = 83; /*alloc fail*/ + } + } + if(!state->error) + { + /*decompress with the Zlib decompressor*/ + state->error = zlib_decompress(&scanlines.data, &scanlines.size, idat.data, + idat.size, &state->decoder.zlibsettings); + } + ucvector_cleanup(&idat); + + if(!state->error) + { + ucvector outv; + ucvector_init(&outv); + if(!ucvector_resizev(&outv, + lodepng_get_raw_size(*w, *h, &state->info_png.color), 0)) state->error = 83; /*alloc fail*/ + if(!state->error) state->error = postProcessScanlines(outv.data, scanlines.data, *w, *h, &state->info_png); + *out = outv.data; + } + ucvector_cleanup(&scanlines); +} + +unsigned lodepng_decode(unsigned char** out, unsigned* w, unsigned* h, + LodePNGState* state, + const unsigned char* in, size_t insize) +{ + *out = 0; + decodeGeneric(out, w, h, state, in, insize); + if(state->error) return state->error; + if(!state->decoder.color_convert || lodepng_color_mode_equal(&state->info_raw, &state->info_png.color)) + { + /*same color type, no copying or converting of data needed*/ + /*store the info_png color settings on the info_raw so that the info_raw still reflects what colortype + the raw image has to the end user*/ + if(!state->decoder.color_convert) + { + state->error = lodepng_color_mode_copy(&state->info_raw, &state->info_png.color); + if(state->error) return state->error; + } + } + else + { + /*color conversion needed; sort of copy of the data*/ + unsigned char* data = *out; + size_t outsize; + + /*TODO: check if this works according to the statement in the documentation: "The converter can convert + from greyscale input color type, to 8-bit greyscale or greyscale with alpha"*/ + if(!(state->info_raw.colortype == LCT_RGB || state->info_raw.colortype == LCT_RGBA) + && !(state->info_raw.bitdepth == 8)) + { + return 56; /*unsupported color mode conversion*/ + } + + outsize = lodepng_get_raw_size(*w, *h, &state->info_raw); + *out = (unsigned char*)lodepng_malloc(outsize); + if(!(*out)) + { + state->error = 83; /*alloc fail*/ + } + else state->error = lodepng_convert(*out, data, &state->info_raw, &state->info_png.color, *w, *h, state->decoder.fix_png); + lodepng_free(data); + } + return state->error; +} + +unsigned lodepng_decode_memory(unsigned char** out, unsigned* w, unsigned* h, const unsigned char* in, + size_t insize, LodePNGColorType colortype, unsigned bitdepth) +{ + unsigned error; + LodePNGState state; + lodepng_state_init(&state); + state.info_raw.colortype = colortype; + state.info_raw.bitdepth = bitdepth; + error = lodepng_decode(out, w, h, &state, in, insize); + lodepng_state_cleanup(&state); + return error; +} + +unsigned lodepng_decode32(unsigned char** out, unsigned* w, unsigned* h, const unsigned char* in, size_t insize) +{ + return lodepng_decode_memory(out, w, h, in, insize, LCT_RGBA, 8); +} + +unsigned lodepng_decode24(unsigned char** out, unsigned* w, unsigned* h, const unsigned char* in, size_t insize) +{ + return lodepng_decode_memory(out, w, h, in, insize, LCT_RGB, 8); +} + +#ifdef LODEPNG_COMPILE_DISK +unsigned lodepng_decode_file(unsigned char** out, unsigned* w, unsigned* h, const char* filename, + LodePNGColorType colortype, unsigned bitdepth) +{ + unsigned char* buffer; + size_t buffersize; + unsigned error; + error = lodepng_load_file(&buffer, &buffersize, filename); + if(!error) error = lodepng_decode_memory(out, w, h, buffer, buffersize, colortype, bitdepth); + lodepng_free(buffer); + return error; +} + +unsigned lodepng_decode32_file(unsigned char** out, unsigned* w, unsigned* h, const char* filename) +{ + return lodepng_decode_file(out, w, h, filename, LCT_RGBA, 8); +} + +unsigned lodepng_decode24_file(unsigned char** out, unsigned* w, unsigned* h, const char* filename) +{ + return lodepng_decode_file(out, w, h, filename, LCT_RGB, 8); +} +#endif /*LODEPNG_COMPILE_DISK*/ + +void lodepng_decoder_settings_init(LodePNGDecoderSettings* settings) +{ + settings->color_convert = 1; +#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS + settings->read_text_chunks = 1; + settings->remember_unknown_chunks = 0; +#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ + settings->ignore_crc = 0; + settings->fix_png = 0; + lodepng_decompress_settings_init(&settings->zlibsettings); +} + +#endif /*LODEPNG_COMPILE_DECODER*/ + +#if defined(LODEPNG_COMPILE_DECODER) || defined(LODEPNG_COMPILE_ENCODER) + +void lodepng_state_init(LodePNGState* state) +{ +#ifdef LODEPNG_COMPILE_DECODER + lodepng_decoder_settings_init(&state->decoder); +#endif /*LODEPNG_COMPILE_DECODER*/ +#ifdef LODEPNG_COMPILE_ENCODER + lodepng_encoder_settings_init(&state->encoder); +#endif /*LODEPNG_COMPILE_ENCODER*/ + lodepng_color_mode_init(&state->info_raw); + lodepng_info_init(&state->info_png); + state->error = 1; +} + +void lodepng_state_cleanup(LodePNGState* state) +{ + lodepng_color_mode_cleanup(&state->info_raw); + lodepng_info_cleanup(&state->info_png); +} + +void lodepng_state_copy(LodePNGState* dest, const LodePNGState* source) +{ + lodepng_state_cleanup(dest); + *dest = *source; + lodepng_color_mode_init(&dest->info_raw); + lodepng_info_init(&dest->info_png); + dest->error = lodepng_color_mode_copy(&dest->info_raw, &source->info_raw); if(dest->error) return; + dest->error = lodepng_info_copy(&dest->info_png, &source->info_png); if(dest->error) return; +} + +#endif /* defined(LODEPNG_COMPILE_DECODER) || defined(LODEPNG_COMPILE_ENCODER) */ + +#ifdef LODEPNG_COMPILE_ENCODER + +/* ////////////////////////////////////////////////////////////////////////// */ +/* / PNG Encoder / */ +/* ////////////////////////////////////////////////////////////////////////// */ + +/*chunkName must be string of 4 characters*/ +static unsigned addChunk(ucvector* out, const char* chunkName, const unsigned char* data, size_t length) +{ + CERROR_TRY_RETURN(lodepng_chunk_create(&out->data, &out->size, (unsigned)length, chunkName, data)); + out->allocsize = out->size; /*fix the allocsize again*/ + return 0; +} + +static void writeSignature(ucvector* out) +{ + /*8 bytes PNG signature, aka the magic bytes*/ + ucvector_push_back(out, 137); + ucvector_push_back(out, 80); + ucvector_push_back(out, 78); + ucvector_push_back(out, 71); + ucvector_push_back(out, 13); + ucvector_push_back(out, 10); + ucvector_push_back(out, 26); + ucvector_push_back(out, 10); +} + +static unsigned addChunk_IHDR(ucvector* out, unsigned w, unsigned h, + LodePNGColorType colortype, unsigned bitdepth, unsigned interlace_method) +{ + unsigned error = 0; + ucvector header; + ucvector_init(&header); + + lodepng_add32bitInt(&header, w); /*width*/ + lodepng_add32bitInt(&header, h); /*height*/ + ucvector_push_back(&header, (unsigned char)bitdepth); /*bit depth*/ + ucvector_push_back(&header, (unsigned char)colortype); /*color type*/ + ucvector_push_back(&header, 0); /*compression method*/ + ucvector_push_back(&header, 0); /*filter method*/ + ucvector_push_back(&header, interlace_method); /*interlace method*/ + + error = addChunk(out, "IHDR", header.data, header.size); + ucvector_cleanup(&header); + + return error; +} + +static unsigned addChunk_PLTE(ucvector* out, const LodePNGColorMode* info) +{ + unsigned error = 0; + size_t i; + ucvector PLTE; + ucvector_init(&PLTE); + for(i = 0; i < info->palettesize * 4; i++) + { + /*add all channels except alpha channel*/ + if(i % 4 != 3) ucvector_push_back(&PLTE, info->palette[i]); + } + error = addChunk(out, "PLTE", PLTE.data, PLTE.size); + ucvector_cleanup(&PLTE); + + return error; +} + +static unsigned addChunk_tRNS(ucvector* out, const LodePNGColorMode* info) +{ + unsigned error = 0; + size_t i; + ucvector tRNS; + ucvector_init(&tRNS); + if(info->colortype == LCT_PALETTE) + { + size_t amount = info->palettesize; + /*the tail of palette values that all have 255 as alpha, does not have to be encoded*/ + for(i = info->palettesize; i > 0; i--) + { + if(info->palette[4 * (i - 1) + 3] == 255) amount--; + else break; + } + /*add only alpha channel*/ + for(i = 0; i < amount; i++) ucvector_push_back(&tRNS, info->palette[4 * i + 3]); + } + else if(info->colortype == LCT_GREY) + { + if(info->key_defined) + { + ucvector_push_back(&tRNS, (unsigned char)(info->key_r / 256)); + ucvector_push_back(&tRNS, (unsigned char)(info->key_r % 256)); + } + } + else if(info->colortype == LCT_RGB) + { + if(info->key_defined) + { + ucvector_push_back(&tRNS, (unsigned char)(info->key_r / 256)); + ucvector_push_back(&tRNS, (unsigned char)(info->key_r % 256)); + ucvector_push_back(&tRNS, (unsigned char)(info->key_g / 256)); + ucvector_push_back(&tRNS, (unsigned char)(info->key_g % 256)); + ucvector_push_back(&tRNS, (unsigned char)(info->key_b / 256)); + ucvector_push_back(&tRNS, (unsigned char)(info->key_b % 256)); + } + } + + error = addChunk(out, "tRNS", tRNS.data, tRNS.size); + ucvector_cleanup(&tRNS); + + return error; +} + +static unsigned addChunk_IDAT(ucvector* out, const unsigned char* data, size_t datasize, + LodePNGCompressSettings* zlibsettings) +{ + ucvector zlibdata; + unsigned error = 0; + + /*compress with the Zlib compressor*/ + ucvector_init(&zlibdata); + error = zlib_compress(&zlibdata.data, &zlibdata.size, data, datasize, zlibsettings); + if(!error) error = addChunk(out, "IDAT", zlibdata.data, zlibdata.size); + ucvector_cleanup(&zlibdata); + + return error; +} + +static unsigned addChunk_IEND(ucvector* out) +{ + unsigned error = 0; + error = addChunk(out, "IEND", 0, 0); + return error; +} + +#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS + +static unsigned addChunk_tEXt(ucvector* out, const char* keyword, const char* textstring) +{ + unsigned error = 0; + size_t i; + ucvector text; + ucvector_init(&text); + for(i = 0; keyword[i] != 0; i++) ucvector_push_back(&text, (unsigned char)keyword[i]); + if(i < 1 || i > 79) return 89; /*error: invalid keyword size*/ + ucvector_push_back(&text, 0); /*0 termination char*/ + for(i = 0; textstring[i] != 0; i++) ucvector_push_back(&text, (unsigned char)textstring[i]); + error = addChunk(out, "tEXt", text.data, text.size); + ucvector_cleanup(&text); + + return error; +} + +static unsigned addChunk_zTXt(ucvector* out, const char* keyword, const char* textstring, + LodePNGCompressSettings* zlibsettings) +{ + unsigned error = 0; + ucvector data, compressed; + size_t i, textsize = strlen(textstring); + + ucvector_init(&data); + ucvector_init(&compressed); + for(i = 0; keyword[i] != 0; i++) ucvector_push_back(&data, (unsigned char)keyword[i]); + if(i < 1 || i > 79) return 89; /*error: invalid keyword size*/ + ucvector_push_back(&data, 0); /*0 termination char*/ + ucvector_push_back(&data, 0); /*compression method: 0*/ + + error = zlib_compress(&compressed.data, &compressed.size, + (unsigned char*)textstring, textsize, zlibsettings); + if(!error) + { + for(i = 0; i < compressed.size; i++) ucvector_push_back(&data, compressed.data[i]); + error = addChunk(out, "zTXt", data.data, data.size); + } + + ucvector_cleanup(&compressed); + ucvector_cleanup(&data); + return error; +} + +static unsigned addChunk_iTXt(ucvector* out, unsigned compressed, const char* keyword, const char* langtag, + const char* transkey, const char* textstring, LodePNGCompressSettings* zlibsettings) +{ + unsigned error = 0; + ucvector data; + size_t i, textsize = strlen(textstring); + + ucvector_init(&data); + + for(i = 0; keyword[i] != 0; i++) ucvector_push_back(&data, (unsigned char)keyword[i]); + if(i < 1 || i > 79) return 89; /*error: invalid keyword size*/ + ucvector_push_back(&data, 0); /*null termination char*/ + ucvector_push_back(&data, compressed ? 1 : 0); /*compression flag*/ + ucvector_push_back(&data, 0); /*compression method*/ + for(i = 0; langtag[i] != 0; i++) ucvector_push_back(&data, (unsigned char)langtag[i]); + ucvector_push_back(&data, 0); /*null termination char*/ + for(i = 0; transkey[i] != 0; i++) ucvector_push_back(&data, (unsigned char)transkey[i]); + ucvector_push_back(&data, 0); /*null termination char*/ + + if(compressed) + { + ucvector compressed_data; + ucvector_init(&compressed_data); + error = zlib_compress(&compressed_data.data, &compressed_data.size, + (unsigned char*)textstring, textsize, zlibsettings); + if(!error) + { + for(i = 0; i < compressed_data.size; i++) ucvector_push_back(&data, compressed_data.data[i]); + } + ucvector_cleanup(&compressed_data); + } + else /*not compressed*/ + { + for(i = 0; textstring[i] != 0; i++) ucvector_push_back(&data, (unsigned char)textstring[i]); + } + + if(!error) error = addChunk(out, "iTXt", data.data, data.size); + ucvector_cleanup(&data); + return error; +} + +static unsigned addChunk_bKGD(ucvector* out, const LodePNGInfo* info) +{ + unsigned error = 0; + ucvector bKGD; + ucvector_init(&bKGD); + if(info->color.colortype == LCT_GREY || info->color.colortype == LCT_GREY_ALPHA) + { + ucvector_push_back(&bKGD, (unsigned char)(info->background_r / 256)); + ucvector_push_back(&bKGD, (unsigned char)(info->background_r % 256)); + } + else if(info->color.colortype == LCT_RGB || info->color.colortype == LCT_RGBA) + { + ucvector_push_back(&bKGD, (unsigned char)(info->background_r / 256)); + ucvector_push_back(&bKGD, (unsigned char)(info->background_r % 256)); + ucvector_push_back(&bKGD, (unsigned char)(info->background_g / 256)); + ucvector_push_back(&bKGD, (unsigned char)(info->background_g % 256)); + ucvector_push_back(&bKGD, (unsigned char)(info->background_b / 256)); + ucvector_push_back(&bKGD, (unsigned char)(info->background_b % 256)); + } + else if(info->color.colortype == LCT_PALETTE) + { + ucvector_push_back(&bKGD, (unsigned char)(info->background_r % 256)); /*palette index*/ + } + + error = addChunk(out, "bKGD", bKGD.data, bKGD.size); + ucvector_cleanup(&bKGD); + + return error; +} + +static unsigned addChunk_tIME(ucvector* out, const LodePNGTime* time) +{ + unsigned error = 0; + unsigned char* data = (unsigned char*)lodepng_malloc(7); + if(!data) return 83; /*alloc fail*/ + data[0] = (unsigned char)(time->year / 256); + data[1] = (unsigned char)(time->year % 256); + data[2] = time->month; + data[3] = time->day; + data[4] = time->hour; + data[5] = time->minute; + data[6] = time->second; + error = addChunk(out, "tIME", data, 7); + lodepng_free(data); + return error; +} + +static unsigned addChunk_pHYs(ucvector* out, const LodePNGInfo* info) +{ + unsigned error = 0; + ucvector data; + ucvector_init(&data); + + lodepng_add32bitInt(&data, info->phys_x); + lodepng_add32bitInt(&data, info->phys_y); + ucvector_push_back(&data, info->phys_unit); + + error = addChunk(out, "pHYs", data.data, data.size); + ucvector_cleanup(&data); + + return error; +} + +#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ + +static void filterScanline(unsigned char* out, const unsigned char* scanline, const unsigned char* prevline, + size_t length, size_t bytewidth, unsigned char filterType) +{ + size_t i; + switch(filterType) + { + case 0: /*None*/ + for(i = 0; i < length; i++) out[i] = scanline[i]; + break; + case 1: /*Sub*/ + if(prevline) + { + for(i = 0; i < bytewidth; i++) out[i] = scanline[i]; + for(i = bytewidth; i < length; i++) out[i] = scanline[i] - scanline[i - bytewidth]; + } + else + { + for(i = 0; i < bytewidth; i++) out[i] = scanline[i]; + for(i = bytewidth; i < length; i++) out[i] = scanline[i] - scanline[i - bytewidth]; + } + break; + case 2: /*Up*/ + if(prevline) + { + for(i = 0; i < length; i++) out[i] = scanline[i] - prevline[i]; + } + else + { + for(i = 0; i < length; i++) out[i] = scanline[i]; + } + break; + case 3: /*Average*/ + if(prevline) + { + for(i = 0; i < bytewidth; i++) out[i] = scanline[i] - prevline[i] / 2; + for(i = bytewidth; i < length; i++) out[i] = scanline[i] - ((scanline[i - bytewidth] + prevline[i]) / 2); + } + else + { + for(i = 0; i < bytewidth; i++) out[i] = scanline[i]; + for(i = bytewidth; i < length; i++) out[i] = scanline[i] - scanline[i - bytewidth] / 2; + } + break; + case 4: /*Paeth*/ + if(prevline) + { + /*paethPredictor(0, prevline[i], 0) is always prevline[i]*/ + for(i = 0; i < bytewidth; i++) out[i] = (scanline[i] - prevline[i]); + for(i = bytewidth; i < length; i++) + { + out[i] = (scanline[i] - paethPredictor(scanline[i - bytewidth], prevline[i], prevline[i - bytewidth])); + } + } + else + { + for(i = 0; i < bytewidth; i++) out[i] = scanline[i]; + /*paethPredictor(scanline[i - bytewidth], 0, 0) is always scanline[i - bytewidth]*/ + for(i = bytewidth; i < length; i++) out[i] = (scanline[i] - scanline[i - bytewidth]); + } + break; + default: return; /*unexisting filter type given*/ + } +} + +/* log2 approximation. A slight bit faster than std::log. */ +static float flog2(float f) +{ + float result = 0; + while(f > 32) { result += 4; f /= 16; } + while(f > 2) { result++; f /= 2; } + return result + 1.442695f * (f * f * f / 3 - 3 * f * f / 2 + 3 * f - 1.83333f); +} + +static unsigned filter(unsigned char* out, const unsigned char* in, unsigned w, unsigned h, + const LodePNGColorMode* info, const LodePNGEncoderSettings* settings) +{ + /* + For PNG filter method 0 + out must be a buffer with as size: h + (w * h * bpp + 7) / 8, because there are + the scanlines with 1 extra byte per scanline + */ + + unsigned bpp = lodepng_get_bpp(info); + /*the width of a scanline in bytes, not including the filter type*/ + size_t linebytes = (w * bpp + 7) / 8; + /*bytewidth is used for filtering, is 1 when bpp < 8, number of bytes per pixel otherwise*/ + size_t bytewidth = (bpp + 7) / 8; + const unsigned char* prevline = 0; + unsigned x, y; + unsigned error = 0; + LodePNGFilterStrategy strategy = settings->filter_strategy; + + /* + There is a heuristic called the minimum sum of absolute differences heuristic, suggested by the PNG standard: + * If the image type is Palette, or the bit depth is smaller than 8, then do not filter the image (i.e. + use fixed filtering, with the filter None). + * (The other case) If the image type is Grayscale or RGB (with or without Alpha), and the bit depth is + not smaller than 8, then use adaptive filtering heuristic as follows: independently for each row, apply + all five filters and select the filter that produces the smallest sum of absolute values per row. + This heuristic is used if filter strategy is LFS_MINSUM and filter_palette_zero is true. + + If filter_palette_zero is true and filter_strategy is not LFS_MINSUM, the above heuristic is followed, + but for "the other case", whatever strategy filter_strategy is set to instead of the minimum sum + heuristic is used. + */ + if(settings->filter_palette_zero && + (info->colortype == LCT_PALETTE || info->bitdepth < 8)) strategy = LFS_ZERO; + + if(bpp == 0) return 31; /*error: invalid color type*/ + + if(strategy == LFS_ZERO) + { + for(y = 0; y < h; y++) + { + size_t outindex = (1 + linebytes) * y; /*the extra filterbyte added to each row*/ + size_t inindex = linebytes * y; + out[outindex] = 0; /*filter type byte*/ + filterScanline(&out[outindex + 1], &in[inindex], prevline, linebytes, bytewidth, 0); + prevline = &in[inindex]; + } + } + else if(strategy == LFS_MINSUM) + { + /*adaptive filtering*/ + size_t sum[5]; + ucvector attempt[5]; /*five filtering attempts, one for each filter type*/ + size_t smallest = 0; + unsigned type, bestType = 0; + + for(type = 0; type < 5; type++) + { + ucvector_init(&attempt[type]); + if(!ucvector_resize(&attempt[type], linebytes)) return 83; /*alloc fail*/ + } + + if(!error) + { + for(y = 0; y < h; y++) + { + /*try the 5 filter types*/ + for(type = 0; type < 5; type++) + { + filterScanline(attempt[type].data, &in[y * linebytes], prevline, linebytes, bytewidth, type); + + /*calculate the sum of the result*/ + sum[type] = 0; + if(type == 0) + { + for(x = 0; x < linebytes; x++) sum[type] += (unsigned char)(attempt[type].data[x]); + } + else + { + for(x = 0; x < linebytes; x++) + { + /*For differences, each byte should be treated as signed, values above 127 are negative + (converted to signed char). Filtertype 0 isn't a difference though, so use unsigned there. + This means filtertype 0 is almost never chosen, but that is justified.*/ + signed char s = (signed char)(attempt[type].data[x]); + sum[type] += s < 0 ? -s : s; + } + } + + /*check if this is smallest sum (or if type == 0 it's the first case so always store the values)*/ + if(type == 0 || sum[type] < smallest) + { + bestType = type; + smallest = sum[type]; + } + } + + prevline = &in[y * linebytes]; + + /*now fill the out values*/ + out[y * (linebytes + 1)] = bestType; /*the first byte of a scanline will be the filter type*/ + for(x = 0; x < linebytes; x++) out[y * (linebytes + 1) + 1 + x] = attempt[bestType].data[x]; + } + } + + for(type = 0; type < 5; type++) ucvector_cleanup(&attempt[type]); + } + else if(strategy == LFS_ENTROPY) + { + float sum[5]; + ucvector attempt[5]; /*five filtering attempts, one for each filter type*/ + float smallest = 0; + unsigned type, bestType = 0; + unsigned count[256]; + + for(type = 0; type < 5; type++) + { + ucvector_init(&attempt[type]); + if(!ucvector_resize(&attempt[type], linebytes)) return 83; /*alloc fail*/ + } + + for(y = 0; y < h; y++) + { + /*try the 5 filter types*/ + for(type = 0; type < 5; type++) + { + filterScanline(attempt[type].data, &in[y * linebytes], prevline, linebytes, bytewidth, type); + for(x = 0; x < 256; x++) count[x] = 0; + for(x = 0; x < linebytes; x++) count[attempt[type].data[x]]++; + count[type]++; /*the filter type itself is part of the scanline*/ + sum[type] = 0; + for(x = 0; x < 256; x++) + { + float p = count[x] / (float)(linebytes + 1); + sum[type] += count[x] == 0 ? 0 : flog2(1 / p) * p; + } + /*check if this is smallest sum (or if type == 0 it's the first case so always store the values)*/ + if(type == 0 || sum[type] < smallest) + { + bestType = type; + smallest = sum[type]; + } + } + + prevline = &in[y * linebytes]; + + /*now fill the out values*/ + out[y * (linebytes + 1)] = bestType; /*the first byte of a scanline will be the filter type*/ + for(x = 0; x < linebytes; x++) out[y * (linebytes + 1) + 1 + x] = attempt[bestType].data[x]; + } + + for(type = 0; type < 5; type++) ucvector_cleanup(&attempt[type]); + } + else if(strategy == LFS_PREDEFINED) + { + for(y = 0; y < h; y++) + { + size_t outindex = (1 + linebytes) * y; /*the extra filterbyte added to each row*/ + size_t inindex = linebytes * y; + unsigned type = settings->predefined_filters[y]; + out[outindex] = type; /*filter type byte*/ + filterScanline(&out[outindex + 1], &in[inindex], prevline, linebytes, bytewidth, type); + prevline = &in[inindex]; + } + } + else if(strategy == LFS_BRUTE_FORCE) + { + /*brute force filter chooser. + deflate the scanline after every filter attempt to see which one deflates best. + This is very slow and gives only slightly smaller, sometimes even larger, result*/ + size_t size[5]; + ucvector attempt[5]; /*five filtering attempts, one for each filter type*/ + size_t smallest = 0; + unsigned type = 0, bestType = 0; + unsigned char* dummy; + LodePNGCompressSettings zlibsettings = settings->zlibsettings; + /*use fixed tree on the attempts so that the tree is not adapted to the filtertype on purpose, + to simulate the true case where the tree is the same for the whole image. Sometimes it gives + better result with dynamic tree anyway. Using the fixed tree sometimes gives worse, but in rare + cases better compression. It does make this a bit less slow, so it's worth doing this.*/ + zlibsettings.btype = 1; + /*a custom encoder likely doesn't read the btype setting and is optimized for complete PNG + images only, so disable it*/ + zlibsettings.custom_zlib = 0; + zlibsettings.custom_deflate = 0; + for(type = 0; type < 5; type++) + { + ucvector_init(&attempt[type]); + ucvector_resize(&attempt[type], linebytes); /*todo: give error if resize failed*/ + } + for(y = 0; y < h; y++) /*try the 5 filter types*/ + { + for(type = 0; type < 5; type++) + { + unsigned testsize = attempt[type].size; + /*if(testsize > 8) testsize /= 8;*/ /*it already works good enough by testing a part of the row*/ + + filterScanline(attempt[type].data, &in[y * linebytes], prevline, linebytes, bytewidth, type); + size[type] = 0; + dummy = 0; + zlib_compress(&dummy, &size[type], attempt[type].data, testsize, &zlibsettings); + lodepng_free(dummy); + /*check if this is smallest size (or if type == 0 it's the first case so always store the values)*/ + if(type == 0 || size[type] < smallest) + { + bestType = type; + smallest = size[type]; + } + } + prevline = &in[y * linebytes]; + out[y * (linebytes + 1)] = bestType; /*the first byte of a scanline will be the filter type*/ + for(x = 0; x < linebytes; x++) out[y * (linebytes + 1) + 1 + x] = attempt[bestType].data[x]; + } + for(type = 0; type < 5; type++) ucvector_cleanup(&attempt[type]); + } + else return 88; /* unknown filter strategy */ + + return error; +} + +static void addPaddingBits(unsigned char* out, const unsigned char* in, + size_t olinebits, size_t ilinebits, unsigned h) +{ + /*The opposite of the removePaddingBits function + olinebits must be >= ilinebits*/ + unsigned y; + size_t diff = olinebits - ilinebits; + size_t obp = 0, ibp = 0; /*bit pointers*/ + for(y = 0; y < h; y++) + { + size_t x; + for(x = 0; x < ilinebits; x++) + { + unsigned char bit = readBitFromReversedStream(&ibp, in); + setBitOfReversedStream(&obp, out, bit); + } + /*obp += diff; --> no, fill in some value in the padding bits too, to avoid + "Use of uninitialised value of size ###" warning from valgrind*/ + for(x = 0; x < diff; x++) setBitOfReversedStream(&obp, out, 0); + } +} + +/* +in: non-interlaced image with size w*h +out: the same pixels, but re-ordered according to PNG's Adam7 interlacing, with + no padding bits between scanlines, but between reduced images so that each + reduced image starts at a byte. +bpp: bits per pixel +there are no padding bits, not between scanlines, not between reduced images +in has the following size in bits: w * h * bpp. +out is possibly bigger due to padding bits between reduced images +NOTE: comments about padding bits are only relevant if bpp < 8 +*/ +static void Adam7_interlace(unsigned char* out, const unsigned char* in, unsigned w, unsigned h, unsigned bpp) +{ + unsigned passw[7], passh[7]; + size_t filter_passstart[8], padded_passstart[8], passstart[8]; + unsigned i; + + Adam7_getpassvalues(passw, passh, filter_passstart, padded_passstart, passstart, w, h, bpp); + + if(bpp >= 8) + { + for(i = 0; i < 7; i++) + { + unsigned x, y, b; + size_t bytewidth = bpp / 8; + for(y = 0; y < passh[i]; y++) + for(x = 0; x < passw[i]; x++) + { + size_t pixelinstart = ((ADAM7_IY[i] + y * ADAM7_DY[i]) * w + ADAM7_IX[i] + x * ADAM7_DX[i]) * bytewidth; + size_t pixeloutstart = passstart[i] + (y * passw[i] + x) * bytewidth; + for(b = 0; b < bytewidth; b++) + { + out[pixeloutstart + b] = in[pixelinstart + b]; + } + } + } + } + else /*bpp < 8: Adam7 with pixels < 8 bit is a bit trickier: with bit pointers*/ + { + for(i = 0; i < 7; i++) + { + unsigned x, y, b; + unsigned ilinebits = bpp * passw[i]; + unsigned olinebits = bpp * w; + size_t obp, ibp; /*bit pointers (for out and in buffer)*/ + for(y = 0; y < passh[i]; y++) + for(x = 0; x < passw[i]; x++) + { + ibp = (ADAM7_IY[i] + y * ADAM7_DY[i]) * olinebits + (ADAM7_IX[i] + x * ADAM7_DX[i]) * bpp; + obp = (8 * passstart[i]) + (y * ilinebits + x * bpp); + for(b = 0; b < bpp; b++) + { + unsigned char bit = readBitFromReversedStream(&ibp, in); + setBitOfReversedStream(&obp, out, bit); + } + } + } + } +} + +/*out must be buffer big enough to contain uncompressed IDAT chunk data, and in must contain the full image. +return value is error**/ +static unsigned preProcessScanlines(unsigned char** out, size_t* outsize, const unsigned char* in, + unsigned w, unsigned h, + const LodePNGInfo* info_png, const LodePNGEncoderSettings* settings) +{ + /* + This function converts the pure 2D image with the PNG's colortype, into filtered-padded-interlaced data. Steps: + *) if no Adam7: 1) add padding bits (= posible extra bits per scanline if bpp < 8) 2) filter + *) if adam7: 1) Adam7_interlace 2) 7x add padding bits 3) 7x filter + */ + unsigned bpp = lodepng_get_bpp(&info_png->color); + unsigned error = 0; + + if(info_png->interlace_method == 0) + { + *outsize = h + (h * ((w * bpp + 7) / 8)); /*image size plus an extra byte per scanline + possible padding bits*/ + *out = (unsigned char*)lodepng_malloc(*outsize); + if(!(*out) && (*outsize)) error = 83; /*alloc fail*/ + + if(!error) + { + /*non multiple of 8 bits per scanline, padding bits needed per scanline*/ + if(bpp < 8 && w * bpp != ((w * bpp + 7) / 8) * 8) + { + unsigned char* padded = (unsigned char*)lodepng_malloc(h * ((w * bpp + 7) / 8)); + if(!padded) error = 83; /*alloc fail*/ + if(!error) + { + addPaddingBits(padded, in, ((w * bpp + 7) / 8) * 8, w * bpp, h); + error = filter(*out, padded, w, h, &info_png->color, settings); + } + lodepng_free(padded); + } + else + { + /*we can immediatly filter into the out buffer, no other steps needed*/ + error = filter(*out, in, w, h, &info_png->color, settings); + } + } + } + else /*interlace_method is 1 (Adam7)*/ + { + unsigned passw[7], passh[7]; + size_t filter_passstart[8], padded_passstart[8], passstart[8]; + unsigned char* adam7; + + Adam7_getpassvalues(passw, passh, filter_passstart, padded_passstart, passstart, w, h, bpp); + + *outsize = filter_passstart[7]; /*image size plus an extra byte per scanline + possible padding bits*/ + *out = (unsigned char*)lodepng_malloc(*outsize); + if(!(*out)) error = 83; /*alloc fail*/ + + adam7 = (unsigned char*)lodepng_malloc(passstart[7]); + if(!adam7 && passstart[7]) error = 83; /*alloc fail*/ + + if(!error) + { + unsigned i; + + Adam7_interlace(adam7, in, w, h, bpp); + for(i = 0; i < 7; i++) + { + if(bpp < 8) + { + unsigned char* padded = (unsigned char*)lodepng_malloc(padded_passstart[i + 1] - padded_passstart[i]); + if(!padded) ERROR_BREAK(83); /*alloc fail*/ + addPaddingBits(padded, &adam7[passstart[i]], + ((passw[i] * bpp + 7) / 8) * 8, passw[i] * bpp, passh[i]); + error = filter(&(*out)[filter_passstart[i]], padded, + passw[i], passh[i], &info_png->color, settings); + lodepng_free(padded); + } + else + { + error = filter(&(*out)[filter_passstart[i]], &adam7[padded_passstart[i]], + passw[i], passh[i], &info_png->color, settings); + } + + if(error) break; + } + } + + lodepng_free(adam7); + } + + return error; +} + +/* +palette must have 4 * palettesize bytes allocated, and given in format RGBARGBARGBARGBA... +returns 0 if the palette is opaque, +returns 1 if the palette has a single color with alpha 0 ==> color key +returns 2 if the palette is semi-translucent. +*/ +static unsigned getPaletteTranslucency(const unsigned char* palette, size_t palettesize) +{ + size_t i, key = 0; + unsigned r = 0, g = 0, b = 0; /*the value of the color with alpha 0, so long as color keying is possible*/ + for(i = 0; i < palettesize; i++) + { + if(!key && palette[4 * i + 3] == 0) + { + r = palette[4 * i + 0]; g = palette[4 * i + 1]; b = palette[4 * i + 2]; + key = 1; + i = (size_t)(-1); /*restart from beginning, to detect earlier opaque colors with key's value*/ + } + else if(palette[4 * i + 3] != 255) return 2; + /*when key, no opaque RGB may have key's RGB*/ + else if(key && r == palette[i * 4 + 0] && g == palette[i * 4 + 1] && b == palette[i * 4 + 2]) return 2; + } + return key; +} + +#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS +static unsigned addUnknownChunks(ucvector* out, unsigned char* data, size_t datasize) +{ + unsigned char* inchunk = data; + while((size_t)(inchunk - data) < datasize) + { + CERROR_TRY_RETURN(lodepng_chunk_append(&out->data, &out->size, inchunk)); + out->allocsize = out->size; /*fix the allocsize again*/ + inchunk = lodepng_chunk_next(inchunk); + } + return 0; +} +#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ + +unsigned lodepng_encode(unsigned char** out, size_t* outsize, + const unsigned char* image, unsigned w, unsigned h, + LodePNGState* state) +{ + LodePNGInfo info; + ucvector outv; + unsigned char* data = 0; /*uncompressed version of the IDAT chunk data*/ + size_t datasize = 0; + + /*provide some proper output values if error will happen*/ + *out = 0; + *outsize = 0; + state->error = 0; + + lodepng_info_init(&info); + lodepng_info_copy(&info, &state->info_png); + + if((info.color.colortype == LCT_PALETTE || state->encoder.force_palette) + && (info.color.palettesize == 0 || info.color.palettesize > 256)) + { + state->error = 68; /*invalid palette size, it is only allowed to be 1-256*/ + return state->error; + } + + if(state->encoder.auto_convert != LAC_NO) + { + state->error = lodepng_auto_choose_color(&info.color, image, w, h, &state->info_raw, + state->encoder.auto_convert); + } + if(state->error) return state->error; + + if(state->encoder.zlibsettings.btype > 2) + { + CERROR_RETURN_ERROR(state->error, 61); /*error: unexisting btype*/ + } + if(state->info_png.interlace_method > 1) + { + CERROR_RETURN_ERROR(state->error, 71); /*error: unexisting interlace mode*/ + } + + state->error = checkColorValidity(info.color.colortype, info.color.bitdepth); + if(state->error) return state->error; /*error: unexisting color type given*/ + state->error = checkColorValidity(state->info_raw.colortype, state->info_raw.bitdepth); + if(state->error) return state->error; /*error: unexisting color type given*/ + + if(!lodepng_color_mode_equal(&state->info_raw, &info.color)) + { + unsigned char* converted; + size_t size = (w * h * lodepng_get_bpp(&info.color) + 7) / 8; + + converted = (unsigned char*)lodepng_malloc(size); + if(!converted && size) state->error = 83; /*alloc fail*/ + if(!state->error) + { + state->error = lodepng_convert(converted, image, &info.color, &state->info_raw, w, h, 0 /*fix_png*/); + } + if(!state->error) preProcessScanlines(&data, &datasize, converted, w, h, &info, &state->encoder); + lodepng_free(converted); + } + else preProcessScanlines(&data, &datasize, image, w, h, &info, &state->encoder); + + ucvector_init(&outv); + while(!state->error) /*while only executed once, to break on error*/ + { +#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS + size_t i; +#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ + /*write signature and chunks*/ + writeSignature(&outv); + /*IHDR*/ + addChunk_IHDR(&outv, w, h, info.color.colortype, info.color.bitdepth, info.interlace_method); +#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS + /*unknown chunks between IHDR and PLTE*/ + if(info.unknown_chunks_data[0]) + { + state->error = addUnknownChunks(&outv, info.unknown_chunks_data[0], info.unknown_chunks_size[0]); + if(state->error) break; + } +#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ + /*PLTE*/ + if(info.color.colortype == LCT_PALETTE) + { + addChunk_PLTE(&outv, &info.color); + } + if(state->encoder.force_palette && (info.color.colortype == LCT_RGB || info.color.colortype == LCT_RGBA)) + { + addChunk_PLTE(&outv, &info.color); + } + /*tRNS*/ + if(info.color.colortype == LCT_PALETTE && getPaletteTranslucency(info.color.palette, info.color.palettesize) != 0) + { + addChunk_tRNS(&outv, &info.color); + } + if((info.color.colortype == LCT_GREY || info.color.colortype == LCT_RGB) && info.color.key_defined) + { + addChunk_tRNS(&outv, &info.color); + } +#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS + /*bKGD (must come between PLTE and the IDAt chunks*/ + if(info.background_defined) addChunk_bKGD(&outv, &info); + /*pHYs (must come before the IDAT chunks)*/ + if(info.phys_defined) addChunk_pHYs(&outv, &info); + + /*unknown chunks between PLTE and IDAT*/ + if(info.unknown_chunks_data[1]) + { + state->error = addUnknownChunks(&outv, info.unknown_chunks_data[1], info.unknown_chunks_size[1]); + if(state->error) break; + } +#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ + /*IDAT (multiple IDAT chunks must be consecutive)*/ + state->error = addChunk_IDAT(&outv, data, datasize, &state->encoder.zlibsettings); + if(state->error) break; +#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS + /*tIME*/ + if(info.time_defined) addChunk_tIME(&outv, &info.time); + /*tEXt and/or zTXt*/ + for(i = 0; i < info.text_num; i++) + { + if(strlen(info.text_keys[i]) > 79) + { + state->error = 66; /*text chunk too large*/ + break; + } + if(strlen(info.text_keys[i]) < 1) + { + state->error = 67; /*text chunk too small*/ + break; + } + if(state->encoder.text_compression) + { + addChunk_zTXt(&outv, info.text_keys[i], info.text_strings[i], &state->encoder.zlibsettings); + } + else + { + addChunk_tEXt(&outv, info.text_keys[i], info.text_strings[i]); + } + } + /*LodePNG version id in text chunk*/ + if(state->encoder.add_id) + { + unsigned alread_added_id_text = 0; + for(i = 0; i < info.text_num; i++) + { + if(!strcmp(info.text_keys[i], "LodePNG")) + { + alread_added_id_text = 1; + break; + } + } + if(alread_added_id_text == 0) + { + addChunk_tEXt(&outv, "LodePNG", VERSION_STRING); /*it's shorter as tEXt than as zTXt chunk*/ + } + } + /*iTXt*/ + for(i = 0; i < info.itext_num; i++) + { + if(strlen(info.itext_keys[i]) > 79) + { + state->error = 66; /*text chunk too large*/ + break; + } + if(strlen(info.itext_keys[i]) < 1) + { + state->error = 67; /*text chunk too small*/ + break; + } + addChunk_iTXt(&outv, state->encoder.text_compression, + info.itext_keys[i], info.itext_langtags[i], info.itext_transkeys[i], info.itext_strings[i], + &state->encoder.zlibsettings); + } + + /*unknown chunks between IDAT and IEND*/ + if(info.unknown_chunks_data[2]) + { + state->error = addUnknownChunks(&outv, info.unknown_chunks_data[2], info.unknown_chunks_size[2]); + if(state->error) break; + } +#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ + addChunk_IEND(&outv); + + break; /*this isn't really a while loop; no error happened so break out now!*/ + } + + lodepng_info_cleanup(&info); + lodepng_free(data); + /*instead of cleaning the vector up, give it to the output*/ + *out = outv.data; + *outsize = outv.size; + + return state->error; +} + +unsigned lodepng_encode_memory(unsigned char** out, size_t* outsize, const unsigned char* image, + unsigned w, unsigned h, LodePNGColorType colortype, unsigned bitdepth) +{ + unsigned error; + LodePNGState state; + lodepng_state_init(&state); + state.info_raw.colortype = colortype; + state.info_raw.bitdepth = bitdepth; + state.info_png.color.colortype = colortype; + state.info_png.color.bitdepth = bitdepth; + lodepng_encode(out, outsize, image, w, h, &state); + error = state.error; + lodepng_state_cleanup(&state); + return error; +} + +unsigned lodepng_encode32(unsigned char** out, size_t* outsize, const unsigned char* image, unsigned w, unsigned h) +{ + return lodepng_encode_memory(out, outsize, image, w, h, LCT_RGBA, 8); +} + +unsigned lodepng_encode24(unsigned char** out, size_t* outsize, const unsigned char* image, unsigned w, unsigned h) +{ + return lodepng_encode_memory(out, outsize, image, w, h, LCT_RGB, 8); +} + +#ifdef LODEPNG_COMPILE_DISK +unsigned lodepng_encode_file(const char* filename, const unsigned char* image, unsigned w, unsigned h, + LodePNGColorType colortype, unsigned bitdepth) +{ + unsigned char* buffer; + size_t buffersize; + unsigned error = lodepng_encode_memory(&buffer, &buffersize, image, w, h, colortype, bitdepth); + if(!error) error = lodepng_save_file(buffer, buffersize, filename); + lodepng_free(buffer); + return error; +} + +unsigned lodepng_encode32_file(const char* filename, const unsigned char* image, unsigned w, unsigned h) +{ + return lodepng_encode_file(filename, image, w, h, LCT_RGBA, 8); +} + +unsigned lodepng_encode24_file(const char* filename, const unsigned char* image, unsigned w, unsigned h) +{ + return lodepng_encode_file(filename, image, w, h, LCT_RGB, 8); +} +#endif /*LODEPNG_COMPILE_DISK*/ + +void lodepng_encoder_settings_init(LodePNGEncoderSettings* settings) +{ + lodepng_compress_settings_init(&settings->zlibsettings); + settings->filter_palette_zero = 1; + settings->filter_strategy = LFS_MINSUM; + settings->auto_convert = LAC_AUTO; + settings->force_palette = 0; + settings->predefined_filters = 0; +#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS + settings->add_id = 0; + settings->text_compression = 1; +#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ +} + +#endif /*LODEPNG_COMPILE_ENCODER*/ +#endif /*LODEPNG_COMPILE_PNG*/ + +#ifdef LODEPNG_COMPILE_ERROR_TEXT +/* +This returns the description of a numerical error code in English. This is also +the documentation of all the error codes. +*/ +const char* lodepng_error_text(unsigned code) +{ + switch(code) + { + case 0: return "no error, everything went ok"; + case 1: return "nothing done yet"; /*the Encoder/Decoder has done nothing yet, error checking makes no sense yet*/ + case 10: return "end of input memory reached without huffman end code"; /*while huffman decoding*/ + case 11: return "error in code tree made it jump outside of huffman tree"; /*while huffman decoding*/ + case 13: return "problem while processing dynamic deflate block"; + case 14: return "problem while processing dynamic deflate block"; + case 15: return "problem while processing dynamic deflate block"; + case 16: return "unexisting code while processing dynamic deflate block"; + case 17: return "end of out buffer memory reached while inflating"; + case 18: return "invalid distance code while inflating"; + case 19: return "end of out buffer memory reached while inflating"; + case 20: return "invalid deflate block BTYPE encountered while decoding"; + case 21: return "NLEN is not ones complement of LEN in a deflate block"; + /*end of out buffer memory reached while inflating: + This can happen if the inflated deflate data is longer than the amount of bytes required to fill up + all the pixels of the image, given the color depth and image dimensions. Something that doesn't + happen in a normal, well encoded, PNG image.*/ + case 22: return "end of out buffer memory reached while inflating"; + case 23: return "end of in buffer memory reached while inflating"; + case 24: return "invalid FCHECK in zlib header"; + case 25: return "invalid compression method in zlib header"; + case 26: return "FDICT encountered in zlib header while it's not used for PNG"; + case 27: return "PNG file is smaller than a PNG header"; + /*Checks the magic file header, the first 8 bytes of the PNG file*/ + case 28: return "incorrect PNG signature, it's no PNG or corrupted"; + case 29: return "first chunk is not the header chunk"; + case 30: return "chunk length too large, chunk broken off at end of file"; + case 31: return "illegal PNG color type or bpp"; + case 32: return "illegal PNG compression method"; + case 33: return "illegal PNG filter method"; + case 34: return "illegal PNG interlace method"; + case 35: return "chunk length of a chunk is too large or the chunk too small"; + case 36: return "illegal PNG filter type encountered"; + case 37: return "illegal bit depth for this color type given"; + case 38: return "the palette is too big"; /*more than 256 colors*/ + case 39: return "more palette alpha values given in tRNS chunk than there are colors in the palette"; + case 40: return "tRNS chunk has wrong size for greyscale image"; + case 41: return "tRNS chunk has wrong size for RGB image"; + case 42: return "tRNS chunk appeared while it was not allowed for this color type"; + case 43: return "bKGD chunk has wrong size for palette image"; + case 44: return "bKGD chunk has wrong size for greyscale image"; + case 45: return "bKGD chunk has wrong size for RGB image"; + /*Is the palette too small?*/ + case 46: return "a value in indexed image is larger than the palette size (bitdepth = 8)"; + /*Is the palette too small?*/ + case 47: return "a value in indexed image is larger than the palette size (bitdepth < 8)"; + /*the input data is empty, maybe a PNG file doesn't exist or is in the wrong path*/ + case 48: return "empty input or file doesn't exist"; + case 49: return "jumped past memory while generating dynamic huffman tree"; + case 50: return "jumped past memory while generating dynamic huffman tree"; + case 51: return "jumped past memory while inflating huffman block"; + case 52: return "jumped past memory while inflating"; + case 53: return "size of zlib data too small"; + case 54: return "repeat symbol in tree while there was no value symbol yet"; + /*jumped past tree while generating huffman tree, this could be when the + tree will have more leaves than symbols after generating it out of the + given lenghts. They call this an oversubscribed dynamic bit lengths tree in zlib.*/ + case 55: return "jumped past tree while generating huffman tree"; + case 56: return "given output image colortype or bitdepth not supported for color conversion"; + case 57: return "invalid CRC encountered (checking CRC can be disabled)"; + case 58: return "invalid ADLER32 encountered (checking ADLER32 can be disabled)"; + case 59: return "requested color conversion not supported"; + case 60: return "invalid window size given in the settings of the encoder (must be 0-32768)"; + case 61: return "invalid BTYPE given in the settings of the encoder (only 0, 1 and 2 are allowed)"; + /*LodePNG leaves the choice of RGB to greyscale conversion formula to the user.*/ + case 62: return "conversion from color to greyscale not supported"; + case 63: return "length of a chunk too long, max allowed for PNG is 2147483647 bytes per chunk"; /*(2^31-1)*/ + /*this would result in the inability of a deflated block to ever contain an end code. It must be at least 1.*/ + case 64: return "the length of the END symbol 256 in the Huffman tree is 0"; + case 66: return "the length of a text chunk keyword given to the encoder is longer than the maximum of 79 bytes"; + case 67: return "the length of a text chunk keyword given to the encoder is smaller than the minimum of 1 byte"; + case 68: return "tried to encode a PLTE chunk with a palette that has less than 1 or more than 256 colors"; + case 69: return "unknown chunk type with 'critical' flag encountered by the decoder"; + case 71: return "unexisting interlace mode given to encoder (must be 0 or 1)"; + case 72: return "while decoding, unexisting compression method encountering in zTXt or iTXt chunk (it must be 0)"; + case 73: return "invalid tIME chunk size"; + case 74: return "invalid pHYs chunk size"; + /*length could be wrong, or data chopped off*/ + case 75: return "no null termination char found while decoding text chunk"; + case 76: return "iTXt chunk too short to contain required bytes"; + case 77: return "integer overflow in buffer size"; + case 78: return "failed to open file for reading"; /*file doesn't exist or couldn't be opened for reading*/ + case 79: return "failed to open file for writing"; + case 80: return "tried creating a tree of 0 symbols"; + case 81: return "lazy matching at pos 0 is impossible"; + case 82: return "color conversion to palette requested while a color isn't in palette"; + case 83: return "memory allocation failed"; + case 84: return "given image too small to contain all pixels to be encoded"; + case 85: return "internal color conversion bug"; + case 86: return "impossible offset in lz77 encoding (internal bug)"; + case 87: return "must provide custom zlib function pointer if LODEPNG_COMPILE_ZLIB is not defined"; + case 88: return "invalid filter strategy given for LodePNGEncoderSettings.filter_strategy"; + case 89: return "text chunk keyword too short or long: must have size 1-79"; + /*the windowsize in the LodePNGCompressSettings. Requiring POT(==> & instead of %) makes encoding 12% faster.*/ + case 90: return "windowsize must be a power of two"; + } + return "unknown error code"; +} +#endif /*LODEPNG_COMPILE_ERROR_TEXT*/ + +/* ////////////////////////////////////////////////////////////////////////// */ +/* ////////////////////////////////////////////////////////////////////////// */ +/* // C++ Wrapper // */ +/* ////////////////////////////////////////////////////////////////////////// */ +/* ////////////////////////////////////////////////////////////////////////// */ + +#ifdef LODEPNG_COMPILE_CPP +namespace lodepng +{ + +#ifdef LODEPNG_COMPILE_DISK +void load_file(std::vector& buffer, const std::string& filename) +{ + std::ifstream file(filename.c_str(), std::ios::in|std::ios::binary|std::ios::ate); + + /*get filesize*/ + std::streamsize size = 0; + if(file.seekg(0, std::ios::end).good()) size = file.tellg(); + if(file.seekg(0, std::ios::beg).good()) size -= file.tellg(); + + /*read contents of the file into the vector*/ + buffer.resize(size_t(size)); + if(size > 0) file.read((char*)(&buffer[0]), size); +} + +/*write given buffer to the file, overwriting the file, it doesn't append to it.*/ +void save_file(const std::vector& buffer, const std::string& filename) +{ + std::ofstream file(filename.c_str(), std::ios::out|std::ios::binary); + file.write(buffer.empty() ? 0 : (char*)&buffer[0], std::streamsize(buffer.size())); +} +#endif //LODEPNG_COMPILE_DISK + +#ifdef LODEPNG_COMPILE_ZLIB +#ifdef LODEPNG_COMPILE_DECODER +unsigned decompress(std::vector& out, const unsigned char* in, size_t insize, + const LodePNGDecompressSettings& settings) +{ + unsigned char* buffer = 0; + size_t buffersize = 0; + unsigned error = zlib_decompress(&buffer, &buffersize, in, insize, &settings); + if(buffer) + { + out.insert(out.end(), &buffer[0], &buffer[buffersize]); + lodepng_free(buffer); + } + return error; +} + +unsigned decompress(std::vector& out, const std::vector& in, + const LodePNGDecompressSettings& settings) +{ + return decompress(out, in.empty() ? 0 : &in[0], in.size(), settings); +} +#endif //LODEPNG_COMPILE_DECODER + +#ifdef LODEPNG_COMPILE_ENCODER +unsigned compress(std::vector& out, const unsigned char* in, size_t insize, + const LodePNGCompressSettings& settings) +{ + unsigned char* buffer = 0; + size_t buffersize = 0; + unsigned error = zlib_compress(&buffer, &buffersize, in, insize, &settings); + if(buffer) + { + out.insert(out.end(), &buffer[0], &buffer[buffersize]); + lodepng_free(buffer); + } + return error; +} + +unsigned compress(std::vector& out, const std::vector& in, + const LodePNGCompressSettings& settings) +{ + return compress(out, in.empty() ? 0 : &in[0], in.size(), settings); +} +#endif //LODEPNG_COMPILE_ENCODER +#endif //LODEPNG_COMPILE_ZLIB + + +#ifdef LODEPNG_COMPILE_PNG + +State::State() +{ + lodepng_state_init(this); +} + +State::State(const State& other) +{ + lodepng_state_init(this); + lodepng_state_copy(this, &other); +} + +State::~State() +{ + lodepng_state_cleanup(this); +} + +State& State::operator=(const State& other) +{ + lodepng_state_copy(this, &other); + return *this; +} + +#ifdef LODEPNG_COMPILE_DECODER + +unsigned decode(std::vector& out, unsigned& w, unsigned& h, const unsigned char* in, + size_t insize, LodePNGColorType colortype, unsigned bitdepth) +{ + unsigned char* buffer; + unsigned error = lodepng_decode_memory(&buffer, &w, &h, in, insize, colortype, bitdepth); + if(buffer && !error) + { + State state; + state.info_raw.colortype = colortype; + state.info_raw.bitdepth = bitdepth; + size_t buffersize = lodepng_get_raw_size(w, h, &state.info_raw); + out.insert(out.end(), &buffer[0], &buffer[buffersize]); + lodepng_free(buffer); + } + return error; +} + +unsigned decode(std::vector& out, unsigned& w, unsigned& h, + const std::vector& in, LodePNGColorType colortype, unsigned bitdepth) +{ + return decode(out, w, h, in.empty() ? 0 : &in[0], (unsigned)in.size(), colortype, bitdepth); +} + +unsigned decode(std::vector& out, unsigned& w, unsigned& h, + State& state, + const unsigned char* in, size_t insize) +{ + unsigned char* buffer = NULL; + unsigned error = lodepng_decode(&buffer, &w, &h, &state, in, insize); + if(buffer && !error) + { + size_t buffersize = lodepng_get_raw_size(w, h, &state.info_raw); + out.insert(out.end(), &buffer[0], &buffer[buffersize]); + } + lodepng_free(buffer); + return error; +} + +unsigned decode(std::vector& out, unsigned& w, unsigned& h, + State& state, + const std::vector& in) +{ + return decode(out, w, h, state, in.empty() ? 0 : &in[0], in.size()); +} + +#ifdef LODEPNG_COMPILE_DISK +unsigned decode(std::vector& out, unsigned& w, unsigned& h, const std::string& filename, + LodePNGColorType colortype, unsigned bitdepth) +{ + std::vector buffer; + load_file(buffer, filename); + return decode(out, w, h, buffer, colortype, bitdepth); +} +#endif //LODEPNG_COMPILE_DECODER +#endif //LODEPNG_COMPILE_DISK + +#ifdef LODEPNG_COMPILE_ENCODER +unsigned encode(std::vector& out, const unsigned char* in, unsigned w, unsigned h, + LodePNGColorType colortype, unsigned bitdepth) +{ + unsigned char* buffer; + size_t buffersize; + unsigned error = lodepng_encode_memory(&buffer, &buffersize, in, w, h, colortype, bitdepth); + if(buffer) + { + out.insert(out.end(), &buffer[0], &buffer[buffersize]); + lodepng_free(buffer); + } + return error; +} + +unsigned encode(std::vector& out, + const std::vector& in, unsigned w, unsigned h, + LodePNGColorType colortype, unsigned bitdepth) +{ + if(lodepng_get_raw_size_lct(w, h, colortype, bitdepth) > in.size()) return 84; + return encode(out, in.empty() ? 0 : &in[0], w, h, colortype, bitdepth); +} + +unsigned encode(std::vector& out, + const unsigned char* in, unsigned w, unsigned h, + State& state) +{ + unsigned char* buffer; + size_t buffersize; + unsigned error = lodepng_encode(&buffer, &buffersize, in, w, h, &state); + if(buffer) + { + out.insert(out.end(), &buffer[0], &buffer[buffersize]); + lodepng_free(buffer); + } + return error; +} + +unsigned encode(std::vector& out, + const std::vector& in, unsigned w, unsigned h, + State& state) +{ + if(lodepng_get_raw_size(w, h, &state.info_raw) > in.size()) return 84; + return encode(out, in.empty() ? 0 : &in[0], w, h, state); +} + +#ifdef LODEPNG_COMPILE_DISK +unsigned encode(const std::string& filename, + const unsigned char* in, unsigned w, unsigned h, + LodePNGColorType colortype, unsigned bitdepth) +{ + std::vector buffer; + unsigned error = encode(buffer, in, w, h, colortype, bitdepth); + if(!error) save_file(buffer, filename); + return error; +} + +unsigned encode(const std::string& filename, + const std::vector& in, unsigned w, unsigned h, + LodePNGColorType colortype, unsigned bitdepth) +{ + if(lodepng_get_raw_size_lct(w, h, colortype, bitdepth) > in.size()) return 84; + return encode(filename, in.empty() ? 0 : &in[0], w, h, colortype, bitdepth); +} +#endif //LODEPNG_COMPILE_DISK +#endif //LODEPNG_COMPILE_ENCODER +#endif //LODEPNG_COMPILE_PNG +} //namespace lodepng +#endif /*LODEPNG_COMPILE_CPP*/ diff --git a/plugingui/lodepng/lodepng.h b/plugingui/lodepng/lodepng.h new file mode 100644 index 0000000..c497a5c --- /dev/null +++ b/plugingui/lodepng/lodepng.h @@ -0,0 +1,1716 @@ +/* +LodePNG version 20131222 + +Copyright (c) 2005-2013 Lode Vandevenne + +This software is provided 'as-is', without any express or implied +warranty. In no event will the authors be held liable for any damages +arising from the use of this software. + +Permission is granted to anyone to use this software for any purpose, +including commercial applications, and to alter it and redistribute it +freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + + 3. This notice may not be removed or altered from any source + distribution. +*/ + +#ifndef LODEPNG_H +#define LODEPNG_H + +#include /*for size_t*/ + +#ifdef __cplusplus +#include +#include +#endif /*__cplusplus*/ + +/* +The following #defines are used to create code sections. They can be disabled +to disable code sections, which can give faster compile time and smaller binary. +The "NO_COMPILE" defines are designed to be used to pass as defines to the +compiler command to disable them without modifying this header, e.g. +-DLODEPNG_NO_COMPILE_ZLIB for gcc. +*/ +/*deflate & zlib. If disabled, you must specify alternative zlib functions in +the custom_zlib field of the compress and decompress settings*/ +#ifndef LODEPNG_NO_COMPILE_ZLIB +#define LODEPNG_COMPILE_ZLIB +#endif +/*png encoder and png decoder*/ +#ifndef LODEPNG_NO_COMPILE_PNG +#define LODEPNG_COMPILE_PNG +#endif +/*deflate&zlib decoder and png decoder*/ +#ifndef LODEPNG_NO_COMPILE_DECODER +#define LODEPNG_COMPILE_DECODER +#endif +/*deflate&zlib encoder and png encoder*/ +#ifndef LODEPNG_NO_COMPILE_ENCODER +#define LODEPNG_COMPILE_ENCODER +#endif +/*the optional built in harddisk file loading and saving functions*/ +#ifndef LODEPNG_NO_COMPILE_DISK +#define LODEPNG_COMPILE_DISK +#endif +/*support for chunks other than IHDR, IDAT, PLTE, tRNS, IEND: ancillary and unknown chunks*/ +#ifndef LODEPNG_NO_COMPILE_ANCILLARY_CHUNKS +#define LODEPNG_COMPILE_ANCILLARY_CHUNKS +#endif +/*ability to convert error numerical codes to English text string*/ +#ifndef LODEPNG_NO_COMPILE_ERROR_TEXT +#define LODEPNG_COMPILE_ERROR_TEXT +#endif +/*Compile the default allocators (C's free, malloc and realloc). If you disable this, +you can define the functions lodepng_free, lodepng_malloc and lodepng_realloc in your +source files with custom allocators.*/ +#ifndef LODEPNG_NO_COMPILE_ALLOCATORS +#define LODEPNG_COMPILE_ALLOCATORS +#endif +/*compile the C++ version (you can disable the C++ wrapper here even when compiling for C++)*/ +#ifdef __cplusplus +#ifndef LODEPNG_NO_COMPILE_CPP +#define LODEPNG_COMPILE_CPP +#endif +#endif + +#ifdef LODEPNG_COMPILE_PNG +/*The PNG color types (also used for raw).*/ +typedef enum LodePNGColorType +{ + LCT_GREY = 0, /*greyscale: 1,2,4,8,16 bit*/ + LCT_RGB = 2, /*RGB: 8,16 bit*/ + LCT_PALETTE = 3, /*palette: 1,2,4,8 bit*/ + LCT_GREY_ALPHA = 4, /*greyscale with alpha: 8,16 bit*/ + LCT_RGBA = 6 /*RGB with alpha: 8,16 bit*/ +} LodePNGColorType; + +#ifdef LODEPNG_COMPILE_DECODER +/* +Converts PNG data in memory to raw pixel data. +out: Output parameter. Pointer to buffer that will contain the raw pixel data. + After decoding, its size is w * h * (bytes per pixel) bytes larger than + initially. Bytes per pixel depends on colortype and bitdepth. + Must be freed after usage with free(*out). + Note: for 16-bit per channel colors, uses big endian format like PNG does. +w: Output parameter. Pointer to width of pixel data. +h: Output parameter. Pointer to height of pixel data. +in: Memory buffer with the PNG file. +insize: size of the in buffer. +colortype: the desired color type for the raw output image. See explanation on PNG color types. +bitdepth: the desired bit depth for the raw output image. See explanation on PNG color types. +Return value: LodePNG error code (0 means no error). +*/ +unsigned lodepng_decode_memory(unsigned char** out, unsigned* w, unsigned* h, + const unsigned char* in, size_t insize, + LodePNGColorType colortype, unsigned bitdepth); + +/*Same as lodepng_decode_memory, but always decodes to 32-bit RGBA raw image*/ +unsigned lodepng_decode32(unsigned char** out, unsigned* w, unsigned* h, + const unsigned char* in, size_t insize); + +/*Same as lodepng_decode_memory, but always decodes to 24-bit RGB raw image*/ +unsigned lodepng_decode24(unsigned char** out, unsigned* w, unsigned* h, + const unsigned char* in, size_t insize); + +#ifdef LODEPNG_COMPILE_DISK +/* +Load PNG from disk, from file with given name. +Same as the other decode functions, but instead takes a filename as input. +*/ +unsigned lodepng_decode_file(unsigned char** out, unsigned* w, unsigned* h, + const char* filename, + LodePNGColorType colortype, unsigned bitdepth); + +/*Same as lodepng_decode_file, but always decodes to 32-bit RGBA raw image.*/ +unsigned lodepng_decode32_file(unsigned char** out, unsigned* w, unsigned* h, + const char* filename); + +/*Same as lodepng_decode_file, but always decodes to 24-bit RGB raw image.*/ +unsigned lodepng_decode24_file(unsigned char** out, unsigned* w, unsigned* h, + const char* filename); +#endif /*LODEPNG_COMPILE_DISK*/ +#endif /*LODEPNG_COMPILE_DECODER*/ + + +#ifdef LODEPNG_COMPILE_ENCODER +/* +Converts raw pixel data into a PNG image in memory. The colortype and bitdepth + of the output PNG image cannot be chosen, they are automatically determined + by the colortype, bitdepth and content of the input pixel data. + Note: for 16-bit per channel colors, needs big endian format like PNG does. +out: Output parameter. Pointer to buffer that will contain the PNG image data. + Must be freed after usage with free(*out). +outsize: Output parameter. Pointer to the size in bytes of the out buffer. +image: The raw pixel data to encode. The size of this buffer should be + w * h * (bytes per pixel), bytes per pixel depends on colortype and bitdepth. +w: width of the raw pixel data in pixels. +h: height of the raw pixel data in pixels. +colortype: the color type of the raw input image. See explanation on PNG color types. +bitdepth: the bit depth of the raw input image. See explanation on PNG color types. +Return value: LodePNG error code (0 means no error). +*/ +unsigned lodepng_encode_memory(unsigned char** out, size_t* outsize, + const unsigned char* image, unsigned w, unsigned h, + LodePNGColorType colortype, unsigned bitdepth); + +/*Same as lodepng_encode_memory, but always encodes from 32-bit RGBA raw image.*/ +unsigned lodepng_encode32(unsigned char** out, size_t* outsize, + const unsigned char* image, unsigned w, unsigned h); + +/*Same as lodepng_encode_memory, but always encodes from 24-bit RGB raw image.*/ +unsigned lodepng_encode24(unsigned char** out, size_t* outsize, + const unsigned char* image, unsigned w, unsigned h); + +#ifdef LODEPNG_COMPILE_DISK +/* +Converts raw pixel data into a PNG file on disk. +Same as the other encode functions, but instead takes a filename as output. +NOTE: This overwrites existing files without warning! +*/ +unsigned lodepng_encode_file(const char* filename, + const unsigned char* image, unsigned w, unsigned h, + LodePNGColorType colortype, unsigned bitdepth); + +/*Same as lodepng_encode_file, but always encodes from 32-bit RGBA raw image.*/ +unsigned lodepng_encode32_file(const char* filename, + const unsigned char* image, unsigned w, unsigned h); + +/*Same as lodepng_encode_file, but always encodes from 24-bit RGB raw image.*/ +unsigned lodepng_encode24_file(const char* filename, + const unsigned char* image, unsigned w, unsigned h); +#endif /*LODEPNG_COMPILE_DISK*/ +#endif /*LODEPNG_COMPILE_ENCODER*/ + + +#ifdef LODEPNG_COMPILE_CPP +namespace lodepng +{ +#ifdef LODEPNG_COMPILE_DECODER +/*Same as lodepng_decode_memory, but decodes to an std::vector.*/ +unsigned decode(std::vector& out, unsigned& w, unsigned& h, + const unsigned char* in, size_t insize, + LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8); +unsigned decode(std::vector& out, unsigned& w, unsigned& h, + const std::vector& in, + LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8); +#ifdef LODEPNG_COMPILE_DISK +/* +Converts PNG file from disk to raw pixel data in memory. +Same as the other decode functions, but instead takes a filename as input. +*/ +unsigned decode(std::vector& out, unsigned& w, unsigned& h, + const std::string& filename, + LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8); +#endif //LODEPNG_COMPILE_DISK +#endif //LODEPNG_COMPILE_DECODER + +#ifdef LODEPNG_COMPILE_ENCODER +/*Same as lodepng_encode_memory, but encodes to an std::vector.*/ +unsigned encode(std::vector& out, + const unsigned char* in, unsigned w, unsigned h, + LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8); +unsigned encode(std::vector& out, + const std::vector& in, unsigned w, unsigned h, + LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8); +#ifdef LODEPNG_COMPILE_DISK +/* +Converts 32-bit RGBA raw pixel data into a PNG file on disk. +Same as the other encode functions, but instead takes a filename as output. +NOTE: This overwrites existing files without warning! +*/ +unsigned encode(const std::string& filename, + const unsigned char* in, unsigned w, unsigned h, + LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8); +unsigned encode(const std::string& filename, + const std::vector& in, unsigned w, unsigned h, + LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8); +#endif //LODEPNG_COMPILE_DISK +#endif //LODEPNG_COMPILE_ENCODER +} //namespace lodepng +#endif /*LODEPNG_COMPILE_CPP*/ +#endif /*LODEPNG_COMPILE_PNG*/ + +#ifdef LODEPNG_COMPILE_ERROR_TEXT +/*Returns an English description of the numerical error code.*/ +const char* lodepng_error_text(unsigned code); +#endif /*LODEPNG_COMPILE_ERROR_TEXT*/ + +#ifdef LODEPNG_COMPILE_DECODER +/*Settings for zlib decompression*/ +typedef struct LodePNGDecompressSettings LodePNGDecompressSettings; +struct LodePNGDecompressSettings +{ + unsigned ignore_adler32; /*if 1, continue and don't give an error message if the Adler32 checksum is corrupted*/ + + /*use custom zlib decoder instead of built in one (default: null)*/ + unsigned (*custom_zlib)(unsigned char**, size_t*, + const unsigned char*, size_t, + const LodePNGDecompressSettings*); + /*use custom deflate decoder instead of built in one (default: null) + if custom_zlib is used, custom_deflate is ignored since only the built in + zlib function will call custom_deflate*/ + unsigned (*custom_inflate)(unsigned char**, size_t*, + const unsigned char*, size_t, + const LodePNGDecompressSettings*); + + const void* custom_context; /*optional custom settings for custom functions*/ +}; + +extern const LodePNGDecompressSettings lodepng_default_decompress_settings; +void lodepng_decompress_settings_init(LodePNGDecompressSettings* settings); +#endif /*LODEPNG_COMPILE_DECODER*/ + +#ifdef LODEPNG_COMPILE_ENCODER +/* +Settings for zlib compression. Tweaking these settings tweaks the balance +between speed and compression ratio. +*/ +typedef struct LodePNGCompressSettings LodePNGCompressSettings; +struct LodePNGCompressSettings /*deflate = compress*/ +{ + /*LZ77 related settings*/ + unsigned btype; /*the block type for LZ (0, 1, 2 or 3, see zlib standard). Should be 2 for proper compression.*/ + unsigned use_lz77; /*whether or not to use LZ77. Should be 1 for proper compression.*/ + unsigned windowsize; /*must be a power of two <= 32768. higher compresses more but is slower. Typical value: 2048.*/ + unsigned minmatch; /*mininum lz77 length. 3 is normally best, 6 can be better for some PNGs. Default: 0*/ + unsigned nicematch; /*stop searching if >= this length found. Set to 258 for best compression. Default: 128*/ + unsigned lazymatching; /*use lazy matching: better compression but a bit slower. Default: true*/ + + /*use custom zlib encoder instead of built in one (default: null)*/ + unsigned (*custom_zlib)(unsigned char**, size_t*, + const unsigned char*, size_t, + const LodePNGCompressSettings*); + /*use custom deflate encoder instead of built in one (default: null) + if custom_zlib is used, custom_deflate is ignored since only the built in + zlib function will call custom_deflate*/ + unsigned (*custom_deflate)(unsigned char**, size_t*, + const unsigned char*, size_t, + const LodePNGCompressSettings*); + + const void* custom_context; /*optional custom settings for custom functions*/ +}; + +extern const LodePNGCompressSettings lodepng_default_compress_settings; +void lodepng_compress_settings_init(LodePNGCompressSettings* settings); +#endif /*LODEPNG_COMPILE_ENCODER*/ + +#ifdef LODEPNG_COMPILE_PNG +/* +Color mode of an image. Contains all information required to decode the pixel +bits to RGBA colors. This information is the same as used in the PNG file +format, and is used both for PNG and raw image data in LodePNG. +*/ +typedef struct LodePNGColorMode +{ + /*header (IHDR)*/ + LodePNGColorType colortype; /*color type, see PNG standard or documentation further in this header file*/ + unsigned bitdepth; /*bits per sample, see PNG standard or documentation further in this header file*/ + + /* + palette (PLTE and tRNS) + + Dynamically allocated with the colors of the palette, including alpha. + When encoding a PNG, to store your colors in the palette of the LodePNGColorMode, first use + lodepng_palette_clear, then for each color use lodepng_palette_add. + If you encode an image without alpha with palette, don't forget to put value 255 in each A byte of the palette. + + When decoding, by default you can ignore this palette, since LodePNG already + fills the palette colors in the pixels of the raw RGBA output. + + The palette is only supported for color type 3. + */ + unsigned char* palette; /*palette in RGBARGBA... order. When allocated, must be either 0, or have size 1024*/ + size_t palettesize; /*palette size in number of colors (amount of bytes is 4 * palettesize)*/ + + /* + transparent color key (tRNS) + + This color uses the same bit depth as the bitdepth value in this struct, which can be 1-bit to 16-bit. + For greyscale PNGs, r, g and b will all 3 be set to the same. + + When decoding, by default you can ignore this information, since LodePNG sets + pixels with this key to transparent already in the raw RGBA output. + + The color key is only supported for color types 0 and 2. + */ + unsigned key_defined; /*is a transparent color key given? 0 = false, 1 = true*/ + unsigned key_r; /*red/greyscale component of color key*/ + unsigned key_g; /*green component of color key*/ + unsigned key_b; /*blue component of color key*/ +} LodePNGColorMode; + +/*init, cleanup and copy functions to use with this struct*/ +void lodepng_color_mode_init(LodePNGColorMode* info); +void lodepng_color_mode_cleanup(LodePNGColorMode* info); +/*return value is error code (0 means no error)*/ +unsigned lodepng_color_mode_copy(LodePNGColorMode* dest, const LodePNGColorMode* source); + +void lodepng_palette_clear(LodePNGColorMode* info); +/*add 1 color to the palette*/ +unsigned lodepng_palette_add(LodePNGColorMode* info, + unsigned char r, unsigned char g, unsigned char b, unsigned char a); + +/*get the total amount of bits per pixel, based on colortype and bitdepth in the struct*/ +unsigned lodepng_get_bpp(const LodePNGColorMode* info); +/*get the amount of color channels used, based on colortype in the struct. +If a palette is used, it counts as 1 channel.*/ +unsigned lodepng_get_channels(const LodePNGColorMode* info); +/*is it a greyscale type? (only colortype 0 or 4)*/ +unsigned lodepng_is_greyscale_type(const LodePNGColorMode* info); +/*has it got an alpha channel? (only colortype 2 or 6)*/ +unsigned lodepng_is_alpha_type(const LodePNGColorMode* info); +/*has it got a palette? (only colortype 3)*/ +unsigned lodepng_is_palette_type(const LodePNGColorMode* info); +/*only returns true if there is a palette and there is a value in the palette with alpha < 255. +Loops through the palette to check this.*/ +unsigned lodepng_has_palette_alpha(const LodePNGColorMode* info); +/* +Check if the given color info indicates the possibility of having non-opaque pixels in the PNG image. +Returns true if the image can have translucent or invisible pixels (it still be opaque if it doesn't use such pixels). +Returns false if the image can only have opaque pixels. +In detail, it returns true only if it's a color type with alpha, or has a palette with non-opaque values, +or if "key_defined" is true. +*/ +unsigned lodepng_can_have_alpha(const LodePNGColorMode* info); +/*Returns the byte size of a raw image buffer with given width, height and color mode*/ +size_t lodepng_get_raw_size(unsigned w, unsigned h, const LodePNGColorMode* color); + +#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS +/*The information of a Time chunk in PNG.*/ +typedef struct LodePNGTime +{ + unsigned year; /*2 bytes used (0-65535)*/ + unsigned month; /*1-12*/ + unsigned day; /*1-31*/ + unsigned hour; /*0-23*/ + unsigned minute; /*0-59*/ + unsigned second; /*0-60 (to allow for leap seconds)*/ +} LodePNGTime; +#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ + +/*Information about the PNG image, except pixels, width and height.*/ +typedef struct LodePNGInfo +{ + /*header (IHDR), palette (PLTE) and transparency (tRNS) chunks*/ + unsigned compression_method;/*compression method of the original file. Always 0.*/ + unsigned filter_method; /*filter method of the original file*/ + unsigned interlace_method; /*interlace method of the original file*/ + LodePNGColorMode color; /*color type and bits, palette and transparency of the PNG file*/ + +#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS + /* + suggested background color chunk (bKGD) + This color uses the same color mode as the PNG (except alpha channel), which can be 1-bit to 16-bit. + + For greyscale PNGs, r, g and b will all 3 be set to the same. When encoding + the encoder writes the red one. For palette PNGs: When decoding, the RGB value + will be stored, not a palette index. But when encoding, specify the index of + the palette in background_r, the other two are then ignored. + + The decoder does not use this background color to edit the color of pixels. + */ + unsigned background_defined; /*is a suggested background color given?*/ + unsigned background_r; /*red component of suggested background color*/ + unsigned background_g; /*green component of suggested background color*/ + unsigned background_b; /*blue component of suggested background color*/ + + /* + non-international text chunks (tEXt and zTXt) + + The char** arrays each contain num strings. The actual messages are in + text_strings, while text_keys are keywords that give a short description what + the actual text represents, e.g. Title, Author, Description, or anything else. + + A keyword is minimum 1 character and maximum 79 characters long. It's + discouraged to use a single line length longer than 79 characters for texts. + + Don't allocate these text buffers yourself. Use the init/cleanup functions + correctly and use lodepng_add_text and lodepng_clear_text. + */ + size_t text_num; /*the amount of texts in these char** buffers (there may be more texts in itext)*/ + char** text_keys; /*the keyword of a text chunk (e.g. "Comment")*/ + char** text_strings; /*the actual text*/ + + /* + international text chunks (iTXt) + Similar to the non-international text chunks, but with additional strings + "langtags" and "transkeys". + */ + size_t itext_num; /*the amount of international texts in this PNG*/ + char** itext_keys; /*the English keyword of the text chunk (e.g. "Comment")*/ + char** itext_langtags; /*language tag for this text's language, ISO/IEC 646 string, e.g. ISO 639 language tag*/ + char** itext_transkeys; /*keyword translated to the international language - UTF-8 string*/ + char** itext_strings; /*the actual international text - UTF-8 string*/ + + /*time chunk (tIME)*/ + unsigned time_defined; /*set to 1 to make the encoder generate a tIME chunk*/ + LodePNGTime time; + + /*phys chunk (pHYs)*/ + unsigned phys_defined; /*if 0, there is no pHYs chunk and the values below are undefined, if 1 else there is one*/ + unsigned phys_x; /*pixels per unit in x direction*/ + unsigned phys_y; /*pixels per unit in y direction*/ + unsigned phys_unit; /*may be 0 (unknown unit) or 1 (metre)*/ + + /* + unknown chunks + There are 3 buffers, one for each position in the PNG where unknown chunks can appear + each buffer contains all unknown chunks for that position consecutively + The 3 buffers are the unknown chunks between certain critical chunks: + 0: IHDR-PLTE, 1: PLTE-IDAT, 2: IDAT-IEND + Do not allocate or traverse this data yourself. Use the chunk traversing functions declared + later, such as lodepng_chunk_next and lodepng_chunk_append, to read/write this struct. + */ + unsigned char* unknown_chunks_data[3]; + size_t unknown_chunks_size[3]; /*size in bytes of the unknown chunks, given for protection*/ +#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ +} LodePNGInfo; + +/*init, cleanup and copy functions to use with this struct*/ +void lodepng_info_init(LodePNGInfo* info); +void lodepng_info_cleanup(LodePNGInfo* info); +/*return value is error code (0 means no error)*/ +unsigned lodepng_info_copy(LodePNGInfo* dest, const LodePNGInfo* source); + +#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS +void lodepng_clear_text(LodePNGInfo* info); /*use this to clear the texts again after you filled them in*/ +unsigned lodepng_add_text(LodePNGInfo* info, const char* key, const char* str); /*push back both texts at once*/ + +void lodepng_clear_itext(LodePNGInfo* info); /*use this to clear the itexts again after you filled them in*/ +unsigned lodepng_add_itext(LodePNGInfo* info, const char* key, const char* langtag, + const char* transkey, const char* str); /*push back the 4 texts of 1 chunk at once*/ +#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ + +/* +Converts raw buffer from one color type to another color type, based on +LodePNGColorMode structs to describe the input and output color type. +See the reference manual at the end of this header file to see which color conversions are supported. +return value = LodePNG error code (0 if all went ok, an error if the conversion isn't supported) +The out buffer must have size (w * h * bpp + 7) / 8, where bpp is the bits per pixel +of the output color type (lodepng_get_bpp) +The fix_png value works as described in struct LodePNGDecoderSettings. +Note: for 16-bit per channel colors, uses big endian format like PNG does. +*/ +unsigned lodepng_convert(unsigned char* out, const unsigned char* in, + LodePNGColorMode* mode_out, const LodePNGColorMode* mode_in, + unsigned w, unsigned h, unsigned fix_png); + +#ifdef LODEPNG_COMPILE_DECODER +/* +Settings for the decoder. This contains settings for the PNG and the Zlib +decoder, but not the Info settings from the Info structs. +*/ +typedef struct LodePNGDecoderSettings +{ + LodePNGDecompressSettings zlibsettings; /*in here is the setting to ignore Adler32 checksums*/ + + unsigned ignore_crc; /*ignore CRC checksums*/ + /* + The fix_png setting, if 1, makes the decoder tolerant towards some PNG images + that do not correctly follow the PNG specification. This only supports errors + that are fixable, were found in images that are actually used on the web, and + are silently tolerated by other decoders as well. Currently only one such fix + is implemented: if a palette index is out of bounds given the palette size, + interpret it as opaque black. + By default this value is 0, which makes it stop with an error on such images. + */ + unsigned fix_png; + unsigned color_convert; /*whether to convert the PNG to the color type you want. Default: yes*/ + +#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS + unsigned read_text_chunks; /*if false but remember_unknown_chunks is true, they're stored in the unknown chunks*/ + /*store all bytes from unknown chunks in the LodePNGInfo (off by default, useful for a png editor)*/ + unsigned remember_unknown_chunks; +#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ +} LodePNGDecoderSettings; + +void lodepng_decoder_settings_init(LodePNGDecoderSettings* settings); +#endif /*LODEPNG_COMPILE_DECODER*/ + +#ifdef LODEPNG_COMPILE_ENCODER +/*automatically use color type with less bits per pixel if losslessly possible. Default: AUTO*/ +typedef enum LodePNGFilterStrategy +{ + /*every filter at zero*/ + LFS_ZERO, + /*Use filter that gives minumum sum, as described in the official PNG filter heuristic.*/ + LFS_MINSUM, + /*Use the filter type that gives smallest Shannon entropy for this scanline. Depending + on the image, this is better or worse than minsum.*/ + LFS_ENTROPY, + /* + Brute-force-search PNG filters by compressing each filter for each scanline. + Experimental, very slow, and only rarely gives better compression than MINSUM. + */ + LFS_BRUTE_FORCE, + /*use predefined_filters buffer: you specify the filter type for each scanline*/ + LFS_PREDEFINED +} LodePNGFilterStrategy; + +/*automatically use color type with less bits per pixel if losslessly possible. Default: LAC_AUTO*/ +typedef enum LodePNGAutoConvert +{ + LAC_NO, /*use color type user requested*/ + LAC_ALPHA, /*use color type user requested, but if only opaque pixels and RGBA or grey+alpha, use RGB or grey*/ + LAC_AUTO, /*use PNG color type that can losslessly represent the uncompressed image the smallest possible*/ + /* + like AUTO, but do not choose 1, 2 or 4 bit per pixel types. + sometimes a PNG image compresses worse if less than 8 bits per pixels. + */ + LAC_AUTO_NO_NIBBLES, + /* + like AUTO, but never choose palette color type. For small images, encoding + the palette may take more bytes than what is gained. Note that AUTO also + already prevents encoding the palette for extremely small images, but that may + not be sufficient because due to the compression it cannot predict when to + switch. + */ + LAC_AUTO_NO_PALETTE, + LAC_AUTO_NO_NIBBLES_NO_PALETTE +} LodePNGAutoConvert; + + +/* +Automatically chooses color type that gives smallest amount of bits in the +output image, e.g. grey if there are only greyscale pixels, palette if there +are less than 256 colors, ... +The auto_convert parameter allows limiting it to not use palette, ... +*/ +unsigned lodepng_auto_choose_color(LodePNGColorMode* mode_out, + const unsigned char* image, unsigned w, unsigned h, + const LodePNGColorMode* mode_in, + LodePNGAutoConvert auto_convert); + +/*Settings for the encoder.*/ +typedef struct LodePNGEncoderSettings +{ + LodePNGCompressSettings zlibsettings; /*settings for the zlib encoder, such as window size, ...*/ + + LodePNGAutoConvert auto_convert; /*how to automatically choose output PNG color type, if at all*/ + + /*If true, follows the official PNG heuristic: if the PNG uses a palette or lower than + 8 bit depth, set all filters to zero. Otherwise use the filter_strategy. Note that to + completely follow the official PNG heuristic, filter_palette_zero must be true and + filter_strategy must be LFS_MINSUM*/ + unsigned filter_palette_zero; + /*Which filter strategy to use when not using zeroes due to filter_palette_zero. + Set filter_palette_zero to 0 to ensure always using your chosen strategy. Default: LFS_MINSUM*/ + LodePNGFilterStrategy filter_strategy; + /*used if filter_strategy is LFS_PREDEFINED. In that case, this must point to a buffer with + the same length as the amount of scanlines in the image, and each value must <= 5. You + have to cleanup this buffer, LodePNG will never free it. Don't forget that filter_palette_zero + must be set to 0 to ensure this is also used on palette or low bitdepth images.*/ + const unsigned char* predefined_filters; + + /*force creating a PLTE chunk if colortype is 2 or 6 (= a suggested palette). + If colortype is 3, PLTE is _always_ created.*/ + unsigned force_palette; +#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS + /*add LodePNG identifier and version as a text chunk, for debugging*/ + unsigned add_id; + /*encode text chunks as zTXt chunks instead of tEXt chunks, and use compression in iTXt chunks*/ + unsigned text_compression; +#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ +} LodePNGEncoderSettings; + +void lodepng_encoder_settings_init(LodePNGEncoderSettings* settings); +#endif /*LODEPNG_COMPILE_ENCODER*/ + + +#if defined(LODEPNG_COMPILE_DECODER) || defined(LODEPNG_COMPILE_ENCODER) +/*The settings, state and information for extended encoding and decoding.*/ +typedef struct LodePNGState +{ +#ifdef LODEPNG_COMPILE_DECODER + LodePNGDecoderSettings decoder; /*the decoding settings*/ +#endif /*LODEPNG_COMPILE_DECODER*/ +#ifdef LODEPNG_COMPILE_ENCODER + LodePNGEncoderSettings encoder; /*the encoding settings*/ +#endif /*LODEPNG_COMPILE_ENCODER*/ + LodePNGColorMode info_raw; /*specifies the format in which you would like to get the raw pixel buffer*/ + LodePNGInfo info_png; /*info of the PNG image obtained after decoding*/ + unsigned error; +#ifdef LODEPNG_COMPILE_CPP + //For the lodepng::State subclass. + virtual ~LodePNGState(){} +#endif +} LodePNGState; + +/*init, cleanup and copy functions to use with this struct*/ +void lodepng_state_init(LodePNGState* state); +void lodepng_state_cleanup(LodePNGState* state); +void lodepng_state_copy(LodePNGState* dest, const LodePNGState* source); +#endif /* defined(LODEPNG_COMPILE_DECODER) || defined(LODEPNG_COMPILE_ENCODER) */ + +#ifdef LODEPNG_COMPILE_DECODER +/* +Same as lodepng_decode_memory, but uses a LodePNGState to allow custom settings and +getting much more information about the PNG image and color mode. +*/ +unsigned lodepng_decode(unsigned char** out, unsigned* w, unsigned* h, + LodePNGState* state, + const unsigned char* in, size_t insize); + +/* +Read the PNG header, but not the actual data. This returns only the information +that is in the header chunk of the PNG, such as width, height and color type. The +information is placed in the info_png field of the LodePNGState. +*/ +unsigned lodepng_inspect(unsigned* w, unsigned* h, + LodePNGState* state, + const unsigned char* in, size_t insize); +#endif /*LODEPNG_COMPILE_DECODER*/ + + +#ifdef LODEPNG_COMPILE_ENCODER +/*This function allocates the out buffer with standard malloc and stores the size in *outsize.*/ +unsigned lodepng_encode(unsigned char** out, size_t* outsize, + const unsigned char* image, unsigned w, unsigned h, + LodePNGState* state); +#endif /*LODEPNG_COMPILE_ENCODER*/ + +/* +The lodepng_chunk functions are normally not needed, except to traverse the +unknown chunks stored in the LodePNGInfo struct, or add new ones to it. +It also allows traversing the chunks of an encoded PNG file yourself. + +PNG standard chunk naming conventions: +First byte: uppercase = critical, lowercase = ancillary +Second byte: uppercase = public, lowercase = private +Third byte: must be uppercase +Fourth byte: uppercase = unsafe to copy, lowercase = safe to copy +*/ + +/*get the length of the data of the chunk. Total chunk length has 12 bytes more.*/ +unsigned lodepng_chunk_length(const unsigned char* chunk); + +/*puts the 4-byte type in null terminated string*/ +void lodepng_chunk_type(char type[5], const unsigned char* chunk); + +/*check if the type is the given type*/ +unsigned char lodepng_chunk_type_equals(const unsigned char* chunk, const char* type); + +/*0: it's one of the critical chunk types, 1: it's an ancillary chunk (see PNG standard)*/ +unsigned char lodepng_chunk_ancillary(const unsigned char* chunk); + +/*0: public, 1: private (see PNG standard)*/ +unsigned char lodepng_chunk_private(const unsigned char* chunk); + +/*0: the chunk is unsafe to copy, 1: the chunk is safe to copy (see PNG standard)*/ +unsigned char lodepng_chunk_safetocopy(const unsigned char* chunk); + +/*get pointer to the data of the chunk, where the input points to the header of the chunk*/ +unsigned char* lodepng_chunk_data(unsigned char* chunk); +const unsigned char* lodepng_chunk_data_const(const unsigned char* chunk); + +/*returns 0 if the crc is correct, 1 if it's incorrect (0 for OK as usual!)*/ +unsigned lodepng_chunk_check_crc(const unsigned char* chunk); + +/*generates the correct CRC from the data and puts it in the last 4 bytes of the chunk*/ +void lodepng_chunk_generate_crc(unsigned char* chunk); + +/*iterate to next chunks. don't use on IEND chunk, as there is no next chunk then*/ +unsigned char* lodepng_chunk_next(unsigned char* chunk); +const unsigned char* lodepng_chunk_next_const(const unsigned char* chunk); + +/* +Appends chunk to the data in out. The given chunk should already have its chunk header. +The out variable and outlength are updated to reflect the new reallocated buffer. +Returns error code (0 if it went ok) +*/ +unsigned lodepng_chunk_append(unsigned char** out, size_t* outlength, const unsigned char* chunk); + +/* +Appends new chunk to out. The chunk to append is given by giving its length, type +and data separately. The type is a 4-letter string. +The out variable and outlength are updated to reflect the new reallocated buffer. +Returne error code (0 if it went ok) +*/ +unsigned lodepng_chunk_create(unsigned char** out, size_t* outlength, unsigned length, + const char* type, const unsigned char* data); + + +/*Calculate CRC32 of buffer*/ +unsigned lodepng_crc32(const unsigned char* buf, size_t len); +#endif /*LODEPNG_COMPILE_PNG*/ + + +#ifdef LODEPNG_COMPILE_ZLIB +/* +This zlib part can be used independently to zlib compress and decompress a +buffer. It cannot be used to create gzip files however, and it only supports the +part of zlib that is required for PNG, it does not support dictionaries. +*/ + +#ifdef LODEPNG_COMPILE_DECODER +/*Inflate a buffer. Inflate is the decompression step of deflate. Out buffer must be freed after use.*/ +unsigned lodepng_inflate(unsigned char** out, size_t* outsize, + const unsigned char* in, size_t insize, + const LodePNGDecompressSettings* settings); + +/* +Decompresses Zlib data. Reallocates the out buffer and appends the data. The +data must be according to the zlib specification. +Either, *out must be NULL and *outsize must be 0, or, *out must be a valid +buffer and *outsize its size in bytes. out must be freed by user after usage. +*/ +unsigned lodepng_zlib_decompress(unsigned char** out, size_t* outsize, + const unsigned char* in, size_t insize, + const LodePNGDecompressSettings* settings); +#endif /*LODEPNG_COMPILE_DECODER*/ + +#ifdef LODEPNG_COMPILE_ENCODER +/* +Compresses data with Zlib. Reallocates the out buffer and appends the data. +Zlib adds a small header and trailer around the deflate data. +The data is output in the format of the zlib specification. +Either, *out must be NULL and *outsize must be 0, or, *out must be a valid +buffer and *outsize its size in bytes. out must be freed by user after usage. +*/ +unsigned lodepng_zlib_compress(unsigned char** out, size_t* outsize, + const unsigned char* in, size_t insize, + const LodePNGCompressSettings* settings); + +/* +Find length-limited Huffman code for given frequencies. This function is in the +public interface only for tests, it's used internally by lodepng_deflate. +*/ +unsigned lodepng_huffman_code_lengths(unsigned* lengths, const unsigned* frequencies, + size_t numcodes, unsigned maxbitlen); + +/*Compress a buffer with deflate. See RFC 1951. Out buffer must be freed after use.*/ +unsigned lodepng_deflate(unsigned char** out, size_t* outsize, + const unsigned char* in, size_t insize, + const LodePNGCompressSettings* settings); + +#endif /*LODEPNG_COMPILE_ENCODER*/ +#endif /*LODEPNG_COMPILE_ZLIB*/ + +#ifdef LODEPNG_COMPILE_DISK +/* +Load a file from disk into buffer. The function allocates the out buffer, and +after usage you should free it. +out: output parameter, contains pointer to loaded buffer. +outsize: output parameter, size of the allocated out buffer +filename: the path to the file to load +return value: error code (0 means ok) +*/ +unsigned lodepng_load_file(unsigned char** out, size_t* outsize, const char* filename); + +/* +Save a file from buffer to disk. Warning, if it exists, this function overwrites +the file without warning! +buffer: the buffer to write +buffersize: size of the buffer to write +filename: the path to the file to save to +return value: error code (0 means ok) +*/ +unsigned lodepng_save_file(const unsigned char* buffer, size_t buffersize, const char* filename); +#endif /*LODEPNG_COMPILE_DISK*/ + +#ifdef LODEPNG_COMPILE_CPP +//The LodePNG C++ wrapper uses std::vectors instead of manually allocated memory buffers. +namespace lodepng +{ +#ifdef LODEPNG_COMPILE_PNG +class State : public LodePNGState +{ + public: + State(); + State(const State& other); + virtual ~State(); + State& operator=(const State& other); +}; + +#ifdef LODEPNG_COMPILE_DECODER +//Same as other lodepng::decode, but using a State for more settings and information. +unsigned decode(std::vector& out, unsigned& w, unsigned& h, + State& state, + const unsigned char* in, size_t insize); +unsigned decode(std::vector& out, unsigned& w, unsigned& h, + State& state, + const std::vector& in); +#endif /*LODEPNG_COMPILE_DECODER*/ + +#ifdef LODEPNG_COMPILE_ENCODER +//Same as other lodepng::encode, but using a State for more settings and information. +unsigned encode(std::vector& out, + const unsigned char* in, unsigned w, unsigned h, + State& state); +unsigned encode(std::vector& out, + const std::vector& in, unsigned w, unsigned h, + State& state); +#endif /*LODEPNG_COMPILE_ENCODER*/ + +#ifdef LODEPNG_COMPILE_DISK +/* +Load a file from disk into an std::vector. If the vector is empty, then either +the file doesn't exist or is an empty file. +*/ +void load_file(std::vector& buffer, const std::string& filename); + +/* +Save the binary data in an std::vector to a file on disk. The file is overwritten +without warning. +*/ +void save_file(const std::vector& buffer, const std::string& filename); +#endif //LODEPNG_COMPILE_DISK +#endif //LODEPNG_COMPILE_PNG + +#ifdef LODEPNG_COMPILE_ZLIB +#ifdef LODEPNG_COMPILE_DECODER +//Zlib-decompress an unsigned char buffer +unsigned decompress(std::vector& out, const unsigned char* in, size_t insize, + const LodePNGDecompressSettings& settings = lodepng_default_decompress_settings); + +//Zlib-decompress an std::vector +unsigned decompress(std::vector& out, const std::vector& in, + const LodePNGDecompressSettings& settings = lodepng_default_decompress_settings); +#endif //LODEPNG_COMPILE_DECODER + +#ifdef LODEPNG_COMPILE_ENCODER +//Zlib-compress an unsigned char buffer +unsigned compress(std::vector& out, const unsigned char* in, size_t insize, + const LodePNGCompressSettings& settings = lodepng_default_compress_settings); + +//Zlib-compress an std::vector +unsigned compress(std::vector& out, const std::vector& in, + const LodePNGCompressSettings& settings = lodepng_default_compress_settings); +#endif //LODEPNG_COMPILE_ENCODER +#endif //LODEPNG_COMPILE_ZLIB +} //namespace lodepng +#endif /*LODEPNG_COMPILE_CPP*/ + +/* +TODO: +[.] test if there are no memory leaks or security exploits - done a lot but needs to be checked often +[.] check compatibility with vareous compilers - done but needs to be redone for every newer version +[X] converting color to 16-bit per channel types +[ ] read all public PNG chunk types (but never let the color profile and gamma ones touch RGB values) +[ ] make sure encoder generates no chunks with size > (2^31)-1 +[ ] partial decoding (stream processing) +[X] let the "isFullyOpaque" function check color keys and transparent palettes too +[X] better name for the variables "codes", "codesD", "codelengthcodes", "clcl" and "lldl" +[ ] don't stop decoding on errors like 69, 57, 58 (make warnings) +[ ] make option to choose if the raw image with non multiple of 8 bits per scanline should have padding bits or not +[ ] let the C++ wrapper catch exceptions coming from the standard library and return LodePNG error codes +*/ + +#endif /*LODEPNG_H inclusion guard*/ + +/* +LodePNG Documentation +--------------------- + +0. table of contents +-------------------- + + 1. about + 1.1. supported features + 1.2. features not supported + 2. C and C++ version + 3. security + 4. decoding + 5. encoding + 6. color conversions + 6.1. PNG color types + 6.2. color conversions + 6.3. padding bits + 6.4. A note about 16-bits per channel and endianness + 7. error values + 8. chunks and PNG editing + 9. compiler support + 10. examples + 10.1. decoder C++ example + 10.2. decoder C example + 11. changes + 12. contact information + + +1. about +-------- + +PNG is a file format to store raster images losslessly with good compression, +supporting different color types and alpha channel. + +LodePNG is a PNG codec according to the Portable Network Graphics (PNG) +Specification (Second Edition) - W3C Recommendation 10 November 2003. + +The specifications used are: + +*) Portable Network Graphics (PNG) Specification (Second Edition): + http://www.w3.org/TR/2003/REC-PNG-20031110 +*) RFC 1950 ZLIB Compressed Data Format version 3.3: + http://www.gzip.org/zlib/rfc-zlib.html +*) RFC 1951 DEFLATE Compressed Data Format Specification ver 1.3: + http://www.gzip.org/zlib/rfc-deflate.html + +The most recent version of LodePNG can currently be found at +http://lodev.org/lodepng/ + +LodePNG works both in C (ISO C90) and C++, with a C++ wrapper that adds +extra functionality. + +LodePNG exists out of two files: +-lodepng.h: the header file for both C and C++ +-lodepng.c(pp): give it the name lodepng.c or lodepng.cpp (or .cc) depending on your usage + +If you want to start using LodePNG right away without reading this doc, get the +examples from the LodePNG website to see how to use it in code, or check the +smaller examples in chapter 13 here. + +LodePNG is simple but only supports the basic requirements. To achieve +simplicity, the following design choices were made: There are no dependencies +on any external library. There are functions to decode and encode a PNG with +a single function call, and extended versions of these functions taking a +LodePNGState struct allowing to specify or get more information. By default +the colors of the raw image are always RGB or RGBA, no matter what color type +the PNG file uses. To read and write files, there are simple functions to +convert the files to/from buffers in memory. + +This all makes LodePNG suitable for loading textures in games, demos and small +programs, ... It's less suitable for full fledged image editors, loading PNGs +over network (it requires all the image data to be available before decoding can +begin), life-critical systems, ... + +1.1. supported features +----------------------- + +The following features are supported by the decoder: + +*) decoding of PNGs with any color type, bit depth and interlace mode, to a 24- or 32-bit color raw image, + or the same color type as the PNG +*) encoding of PNGs, from any raw image to 24- or 32-bit color, or the same color type as the raw image +*) Adam7 interlace and deinterlace for any color type +*) loading the image from harddisk or decoding it from a buffer from other sources than harddisk +*) support for alpha channels, including RGBA color model, translucent palettes and color keying +*) zlib decompression (inflate) +*) zlib compression (deflate) +*) CRC32 and ADLER32 checksums +*) handling of unknown chunks, allowing making a PNG editor that stores custom and unknown chunks. +*) the following chunks are supported (generated/interpreted) by both encoder and decoder: + IHDR: header information + PLTE: color palette + IDAT: pixel data + IEND: the final chunk + tRNS: transparency for palettized images + tEXt: textual information + zTXt: compressed textual information + iTXt: international textual information + bKGD: suggested background color + pHYs: physical dimensions + tIME: modification time + +1.2. features not supported +--------------------------- + +The following features are _not_ supported: + +*) some features needed to make a conformant PNG-Editor might be still missing. +*) partial loading/stream processing. All data must be available and is processed in one call. +*) The following public chunks are not supported but treated as unknown chunks by LodePNG + cHRM, gAMA, iCCP, sRGB, sBIT, hIST, sPLT + Some of these are not supported on purpose: LodePNG wants to provide the RGB values + stored in the pixels, not values modified by system dependent gamma or color models. + + +2. C and C++ version +-------------------- + +The C version uses buffers allocated with alloc that you need to free() +yourself. You need to use init and cleanup functions for each struct whenever +using a struct from the C version to avoid exploits and memory leaks. + +The C++ version has extra functions with std::vectors in the interface and the +lodepng::State class which is a LodePNGState with constructor and destructor. + +These files work without modification for both C and C++ compilers because all +the additional C++ code is in "#ifdef __cplusplus" blocks that make C-compilers +ignore it, and the C code is made to compile both with strict ISO C90 and C++. + +To use the C++ version, you need to rename the source file to lodepng.cpp +(instead of lodepng.c), and compile it with a C++ compiler. + +To use the C version, you need to rename the source file to lodepng.c (instead +of lodepng.cpp), and compile it with a C compiler. + + +3. Security +----------- + +Even if carefully designed, it's always possible that LodePNG contains possible +exploits. If you discover one, please let me know, and it will be fixed. + +When using LodePNG, care has to be taken with the C version of LodePNG, as well +as the C-style structs when working with C++. The following conventions are used +for all C-style structs: + +-if a struct has a corresponding init function, always call the init function when making a new one +-if a struct has a corresponding cleanup function, call it before the struct disappears to avoid memory leaks +-if a struct has a corresponding copy function, use the copy function instead of "=". + The destination must also be inited already. + + +4. Decoding +----------- + +Decoding converts a PNG compressed image to a raw pixel buffer. + +Most documentation on using the decoder is at its declarations in the header +above. For C, simple decoding can be done with functions such as +lodepng_decode32, and more advanced decoding can be done with the struct +LodePNGState and lodepng_decode. For C++, all decoding can be done with the +various lodepng::decode functions, and lodepng::State can be used for advanced +features. + +When using the LodePNGState, it uses the following fields for decoding: +*) LodePNGInfo info_png: it stores extra information about the PNG (the input) in here +*) LodePNGColorMode info_raw: here you can say what color mode of the raw image (the output) you want to get +*) LodePNGDecoderSettings decoder: you can specify a few extra settings for the decoder to use + +LodePNGInfo info_png +-------------------- + +After decoding, this contains extra information of the PNG image, except the actual +pixels, width and height because these are already gotten directly from the decoder +functions. + +It contains for example the original color type of the PNG image, text comments, +suggested background color, etc... More details about the LodePNGInfo struct are +at its declaration documentation. + +LodePNGColorMode info_raw +------------------------- + +When decoding, here you can specify which color type you want +the resulting raw image to be. If this is different from the colortype of the +PNG, then the decoder will automatically convert the result. This conversion +always works, except if you want it to convert a color PNG to greyscale or to +a palette with missing colors. + +By default, 32-bit color is used for the result. + +LodePNGDecoderSettings decoder +------------------------------ + +The settings can be used to ignore the errors created by invalid CRC and Adler32 +chunks, and to disable the decoding of tEXt chunks. + +There's also a setting color_convert, true by default. If false, no conversion +is done, the resulting data will be as it was in the PNG (after decompression) +and you'll have to puzzle the colors of the pixels together yourself using the +color type information in the LodePNGInfo. + + +5. Encoding +----------- + +Encoding converts a raw pixel buffer to a PNG compressed image. + +Most documentation on using the encoder is at its declarations in the header +above. For C, simple encoding can be done with functions such as +lodepng_encode32, and more advanced decoding can be done with the struct +LodePNGState and lodepng_encode. For C++, all encoding can be done with the +various lodepng::encode functions, and lodepng::State can be used for advanced +features. + +Like the decoder, the encoder can also give errors. However it gives less errors +since the encoder input is trusted, the decoder input (a PNG image that could +be forged by anyone) is not trusted. + +When using the LodePNGState, it uses the following fields for encoding: +*) LodePNGInfo info_png: here you specify how you want the PNG (the output) to be. +*) LodePNGColorMode info_raw: here you say what color type of the raw image (the input) has +*) LodePNGEncoderSettings encoder: you can specify a few settings for the encoder to use + +LodePNGInfo info_png +-------------------- + +When encoding, you use this the opposite way as when decoding: for encoding, +you fill in the values you want the PNG to have before encoding. By default it's +not needed to specify a color type for the PNG since it's automatically chosen, +but it's possible to choose it yourself given the right settings. + +The encoder will not always exactly match the LodePNGInfo struct you give, +it tries as close as possible. Some things are ignored by the encoder. The +encoder uses, for example, the following settings from it when applicable: +colortype and bitdepth, text chunks, time chunk, the color key, the palette, the +background color, the interlace method, unknown chunks, ... + +When encoding to a PNG with colortype 3, the encoder will generate a PLTE chunk. +If the palette contains any colors for which the alpha channel is not 255 (so +there are translucent colors in the palette), it'll add a tRNS chunk. + +LodePNGColorMode info_raw +------------------------- + +You specify the color type of the raw image that you give to the input here, +including a possible transparent color key and palette you happen to be using in +your raw image data. + +By default, 32-bit color is assumed, meaning your input has to be in RGBA +format with 4 bytes (unsigned chars) per pixel. + +LodePNGEncoderSettings encoder +------------------------------ + +The following settings are supported (some are in sub-structs): +*) auto_convert: when this option is enabled, the encoder will +automatically choose the smallest possible color mode (including color key) that +can encode the colors of all pixels without information loss. +*) btype: the block type for LZ77. 0 = uncompressed, 1 = fixed huffman tree, + 2 = dynamic huffman tree (best compression). Should be 2 for proper + compression. +*) use_lz77: whether or not to use LZ77 for compressed block types. Should be + true for proper compression. +*) windowsize: the window size used by the LZ77 encoder (1 - 32768). Has value + 2048 by default, but can be set to 32768 for better, but slow, compression. +*) force_palette: if colortype is 2 or 6, you can make the encoder write a PLTE + chunk if force_palette is true. This can used as suggested palette to convert + to by viewers that don't support more than 256 colors (if those still exist) +*) add_id: add text chunk "Encoder: LodePNG " to the image. +*) text_compression: default 1. If 1, it'll store texts as zTXt instead of tEXt chunks. + zTXt chunks use zlib compression on the text. This gives a smaller result on + large texts but a larger result on small texts (such as a single program name). + It's all tEXt or all zTXt though, there's no separate setting per text yet. + + +6. color conversions +-------------------- + +An important thing to note about LodePNG, is that the color type of the PNG, and +the color type of the raw image, are completely independent. By default, when +you decode a PNG, you get the result as a raw image in the color type you want, +no matter whether the PNG was encoded with a palette, greyscale or RGBA color. +And if you encode an image, by default LodePNG will automatically choose the PNG +color type that gives good compression based on the values of colors and amount +of colors in the image. It can be configured to let you control it instead as +well, though. + +To be able to do this, LodePNG does conversions from one color mode to another. +It can convert from almost any color type to any other color type, except the +following conversions: RGB to greyscale is not supported, and converting to a +palette when the palette doesn't have a required color is not supported. This is +not supported on purpose: this is information loss which requires a color +reduction algorithm that is beyong the scope of a PNG encoder (yes, RGB to grey +is easy, but there are multiple ways if you want to give some channels more +weight). + +By default, when decoding, you get the raw image in 32-bit RGBA or 24-bit RGB +color, no matter what color type the PNG has. And by default when encoding, +LodePNG automatically picks the best color model for the output PNG, and expects +the input image to be 32-bit RGBA or 24-bit RGB. So, unless you want to control +the color format of the images yourself, you can skip this chapter. + +6.1. PNG color types +-------------------- + +A PNG image can have many color types, ranging from 1-bit color to 64-bit color, +as well as palettized color modes. After the zlib decompression and unfiltering +in the PNG image is done, the raw pixel data will have that color type and thus +a certain amount of bits per pixel. If you want the output raw image after +decoding to have another color type, a conversion is done by LodePNG. + +The PNG specification gives the following color types: + +0: greyscale, bit depths 1, 2, 4, 8, 16 +2: RGB, bit depths 8 and 16 +3: palette, bit depths 1, 2, 4 and 8 +4: greyscale with alpha, bit depths 8 and 16 +6: RGBA, bit depths 8 and 16 + +Bit depth is the amount of bits per pixel per color channel. So the total amount +of bits per pixel is: amount of channels * bitdepth. + +6.2. color conversions +---------------------- + +As explained in the sections about the encoder and decoder, you can specify +color types and bit depths in info_png and info_raw to change the default +behaviour. + +If, when decoding, you want the raw image to be something else than the default, +you need to set the color type and bit depth you want in the LodePNGColorMode, +or the parameters of the simple function of LodePNG you're using. + +If, when encoding, you use another color type than the default in the input +image, you need to specify its color type and bit depth in the LodePNGColorMode +of the raw image, or use the parameters of the simplefunction of LodePNG you're +using. + +If, when encoding, you don't want LodePNG to choose the output PNG color type +but control it yourself, you need to set auto_convert in the encoder settings +to LAC_NONE, and specify the color type you want in the LodePNGInfo of the +encoder. + +If you do any of the above, LodePNG may need to do a color conversion, which +follows the rules below, and may sometimes not be allowed. + +To avoid some confusion: +-the decoder converts from PNG to raw image +-the encoder converts from raw image to PNG +-the colortype and bitdepth in LodePNGColorMode info_raw, are those of the raw image +-the colortype and bitdepth in the color field of LodePNGInfo info_png, are those of the PNG +-when encoding, the color type in LodePNGInfo is ignored if auto_convert + is enabled, it is automatically generated instead +-when decoding, the color type in LodePNGInfo is set by the decoder to that of the original + PNG image, but it can be ignored since the raw image has the color type you requested instead +-if the color type of the LodePNGColorMode and PNG image aren't the same, a conversion + between the color types is done if the color types are supported. If it is not + supported, an error is returned. If the types are the same, no conversion is done. +-even though some conversions aren't supported, LodePNG supports loading PNGs from any + colortype and saving PNGs to any colortype, sometimes it just requires preparing + the raw image correctly before encoding. +-both encoder and decoder use the same color converter. + +Non supported color conversions: +-color to greyscale: no error is thrown, but the result will look ugly because +only the red channel is taken +-anything, to palette when that palette does not have that color in it: in this +case an error is thrown + +Supported color conversions: +-anything to 8-bit RGB, 8-bit RGBA, 16-bit RGB, 16-bit RGBA +-any grey or grey+alpha, to grey or grey+alpha +-anything to a palette, as long as the palette has the requested colors in it +-removing alpha channel +-higher to smaller bitdepth, and vice versa + +If you want no color conversion to be done: +-In the encoder, you can make it save a PNG with any color type by giving the +raw color mode and LodePNGInfo the same color mode, and setting auto_convert to +LAC_NO. +-In the decoder, you can make it store the pixel data in the same color type +as the PNG has, by setting the color_convert setting to false. Settings in +info_raw are then ignored. + +The function lodepng_convert does the color conversion. It is available in the +interface but normally isn't needed since the encoder and decoder already call +it. + +6.3. padding bits +----------------- + +In the PNG file format, if a less than 8-bit per pixel color type is used and the scanlines +have a bit amount that isn't a multiple of 8, then padding bits are used so that each +scanline starts at a fresh byte. But that is NOT true for the LodePNG raw input and output. +The raw input image you give to the encoder, and the raw output image you get from the decoder +will NOT have these padding bits, e.g. in the case of a 1-bit image with a width +of 7 pixels, the first pixel of the second scanline will the the 8th bit of the first byte, +not the first bit of a new byte. + +6.4. A note about 16-bits per channel and endianness +---------------------------------------------------- + +LodePNG uses unsigned char arrays for 16-bit per channel colors too, just like +for any other color format. The 16-bit values are stored in big endian (most +significant byte first) in these arrays. This is the opposite order of the +little endian used by x86 CPU's. + +LodePNG always uses big endian because the PNG file format does so internally. +Conversions to other formats than PNG uses internally are not supported by +LodePNG on purpose, there are myriads of formats, including endianness of 16-bit +colors, the order in which you store R, G, B and A, and so on. Supporting and +converting to/from all that is outside the scope of LodePNG. + +This may mean that, depending on your use case, you may want to convert the big +endian output of LodePNG to little endian with a for loop. This is certainly not +always needed, many applications and libraries support big endian 16-bit colors +anyway, but it means you cannot simply cast the unsigned char* buffer to an +unsigned short* buffer on x86 CPUs. + + +7. error values +--------------- + +All functions in LodePNG that return an error code, return 0 if everything went +OK, or a non-zero code if there was an error. + +The meaning of the LodePNG error values can be retrieved with the function +lodepng_error_text: given the numerical error code, it returns a description +of the error in English as a string. + +Check the implementation of lodepng_error_text to see the meaning of each code. + + +8. chunks and PNG editing +------------------------- + +If you want to add extra chunks to a PNG you encode, or use LodePNG for a PNG +editor that should follow the rules about handling of unknown chunks, or if your +program is able to read other types of chunks than the ones handled by LodePNG, +then that's possible with the chunk functions of LodePNG. + +A PNG chunk has the following layout: + +4 bytes length +4 bytes type name +length bytes data +4 bytes CRC + +8.1. iterating through chunks +----------------------------- + +If you have a buffer containing the PNG image data, then the first chunk (the +IHDR chunk) starts at byte number 8 of that buffer. The first 8 bytes are the +signature of the PNG and are not part of a chunk. But if you start at byte 8 +then you have a chunk, and can check the following things of it. + +NOTE: none of these functions check for memory buffer boundaries. To avoid +exploits, always make sure the buffer contains all the data of the chunks. +When using lodepng_chunk_next, make sure the returned value is within the +allocated memory. + +unsigned lodepng_chunk_length(const unsigned char* chunk): + +Get the length of the chunk's data. The total chunk length is this length + 12. + +void lodepng_chunk_type(char type[5], const unsigned char* chunk): +unsigned char lodepng_chunk_type_equals(const unsigned char* chunk, const char* type): + +Get the type of the chunk or compare if it's a certain type + +unsigned char lodepng_chunk_critical(const unsigned char* chunk): +unsigned char lodepng_chunk_private(const unsigned char* chunk): +unsigned char lodepng_chunk_safetocopy(const unsigned char* chunk): + +Check if the chunk is critical in the PNG standard (only IHDR, PLTE, IDAT and IEND are). +Check if the chunk is private (public chunks are part of the standard, private ones not). +Check if the chunk is safe to copy. If it's not, then, when modifying data in a critical +chunk, unsafe to copy chunks of the old image may NOT be saved in the new one if your +program doesn't handle that type of unknown chunk. + +unsigned char* lodepng_chunk_data(unsigned char* chunk): +const unsigned char* lodepng_chunk_data_const(const unsigned char* chunk): + +Get a pointer to the start of the data of the chunk. + +unsigned lodepng_chunk_check_crc(const unsigned char* chunk): +void lodepng_chunk_generate_crc(unsigned char* chunk): + +Check if the crc is correct or generate a correct one. + +unsigned char* lodepng_chunk_next(unsigned char* chunk): +const unsigned char* lodepng_chunk_next_const(const unsigned char* chunk): + +Iterate to the next chunk. This works if you have a buffer with consecutive chunks. Note that these +functions do no boundary checking of the allocated data whatsoever, so make sure there is enough +data available in the buffer to be able to go to the next chunk. + +unsigned lodepng_chunk_append(unsigned char** out, size_t* outlength, const unsigned char* chunk): +unsigned lodepng_chunk_create(unsigned char** out, size_t* outlength, unsigned length, + const char* type, const unsigned char* data): + +These functions are used to create new chunks that are appended to the data in *out that has +length *outlength. The append function appends an existing chunk to the new data. The create +function creates a new chunk with the given parameters and appends it. Type is the 4-letter +name of the chunk. + +8.2. chunks in info_png +----------------------- + +The LodePNGInfo struct contains fields with the unknown chunk in it. It has 3 +buffers (each with size) to contain 3 types of unknown chunks: +the ones that come before the PLTE chunk, the ones that come between the PLTE +and the IDAT chunks, and the ones that come after the IDAT chunks. +It's necessary to make the distionction between these 3 cases because the PNG +standard forces to keep the ordering of unknown chunks compared to the critical +chunks, but does not force any other ordering rules. + +info_png.unknown_chunks_data[0] is the chunks before PLTE +info_png.unknown_chunks_data[1] is the chunks after PLTE, before IDAT +info_png.unknown_chunks_data[2] is the chunks after IDAT + +The chunks in these 3 buffers can be iterated through and read by using the same +way described in the previous subchapter. + +When using the decoder to decode a PNG, you can make it store all unknown chunks +if you set the option settings.remember_unknown_chunks to 1. By default, this +option is off (0). + +The encoder will always encode unknown chunks that are stored in the info_png. +If you need it to add a particular chunk that isn't known by LodePNG, you can +use lodepng_chunk_append or lodepng_chunk_create to the chunk data in +info_png.unknown_chunks_data[x]. + +Chunks that are known by LodePNG should not be added in that way. E.g. to make +LodePNG add a bKGD chunk, set background_defined to true and add the correct +parameters there instead. + + +9. compiler support +------------------- + +No libraries other than the current standard C library are needed to compile +LodePNG. For the C++ version, only the standard C++ library is needed on top. +Add the files lodepng.c(pp) and lodepng.h to your project, include +lodepng.h where needed, and your program can read/write PNG files. + +If performance is important, use optimization when compiling! For both the +encoder and decoder, this makes a large difference. + +Make sure that LodePNG is compiled with the same compiler of the same version +and with the same settings as the rest of the program, or the interfaces with +std::vectors and std::strings in C++ can be incompatible. + +CHAR_BITS must be 8 or higher, because LodePNG uses unsigned chars for octets. + +*) gcc and g++ + +LodePNG is developed in gcc so this compiler is natively supported. It gives no +warnings with compiler options "-Wall -Wextra -pedantic -ansi", with gcc and g++ +version 4.7.1 on Linux, 32-bit and 64-bit. + +*) Mingw + +The Mingw compiler (a port of gcc) for Windows is fully supported by LodePNG. + +*) Visual Studio 2005 and up, Visual C++ Express Edition 2005 and up + +Visual Studio may give warnings about 'fopen' being deprecated. A multiplatform library +can't support the proposed Visual Studio alternative however, so LodePNG keeps using +fopen. If you don't want to see the deprecated warnings, put this on top of lodepng.h +before the inclusions: +#define _CRT_SECURE_NO_DEPRECATE + +Other than the above warnings, LodePNG should be warning-free with warning +level 3 (W3). Warning level 4 (W4) will give warnings about integer conversions. +I'm not planning to resolve these warnings. To get rid of them, let Visual +Studio use warning level W3 for lodepng.cpp only: right click lodepng.cpp, +Properties, C/C++, General, Warning Level: Level 3 (/W3). + +Visual Studio may want "stdafx.h" files to be included in each source file and +give an error "unexpected end of file while looking for precompiled header". +That is not standard C++ and will not be added to the stock LodePNG. You can +disable it for lodepng.cpp only by right clicking it, Properties, C/C++, +Precompiled Headers, and set it to Not Using Precompiled Headers there. + +*) Visual Studio 6.0 + +LodePNG support for Visual Studio 6.0 is not guaranteed because VS6 doesn't +follow the C++ standard correctly. + +*) Comeau C/C++ + +Vesion 20070107 compiles without problems on the Comeau C/C++ Online Test Drive +at http://www.comeaucomputing.com/tryitout in both C90 and C++ mode. + +*) Compilers on Macintosh + +LodePNG has been reported to work both with the gcc and LLVM for Macintosh, both +for C and C++. + +*) Other Compilers + +If you encounter problems on other compilers, feel free to let me know and I may +try to fix it if the compiler is modern standards complient. + + +10. examples +------------ + +This decoder example shows the most basic usage of LodePNG. More complex +examples can be found on the LodePNG website. + +10.1. decoder C++ example +------------------------- + +#include "lodepng.h" +#include + +int main(int argc, char *argv[]) +{ + const char* filename = argc > 1 ? argv[1] : "test.png"; + + //load and decode + std::vector image; + unsigned width, height; + unsigned error = lodepng::decode(image, width, height, filename); + + //if there's an error, display it + if(error) std::cout << "decoder error " << error << ": " << lodepng_error_text(error) << std::endl; + + //the pixels are now in the vector "image", 4 bytes per pixel, ordered RGBARGBA..., use it as texture, draw it, ... +} + +10.2. decoder C example +----------------------- + +#include "lodepng.h" + +int main(int argc, char *argv[]) +{ + unsigned error; + unsigned char* image; + size_t width, height; + const char* filename = argc > 1 ? argv[1] : "test.png"; + + error = lodepng_decode32_file(&image, &width, &height, filename); + + if(error) printf("decoder error %u: %s\n", error, lodepng_error_text(error)); + + / * use image here * / + + free(image); + return 0; +} + + +11. changes +----------- + +The version number of LodePNG is the date of the change given in the format +yyyymmdd. + +Some changes aren't backwards compatible. Those are indicated with a (!) +symbol. + +*) 22 dec 2013: Power of two windowsize required for optimization. +*) 15 apr 2013: Fixed bug with LAC_ALPHA and color key. +*) 25 mar 2013: Added an optional feature to ignore some PNG errors (fix_png). +*) 11 mar 2013 (!): Bugfix with custom free. Changed from "my" to "lodepng_" + prefix for the custom allocators and made it possible with a new #define to + use custom ones in your project without needing to change lodepng's code. +*) 28 jan 2013: Bugfix with color key. +*) 27 okt 2012: Tweaks in text chunk keyword length error handling. +*) 8 okt 2012 (!): Added new filter strategy (entropy) and new auto color mode. + (no palette). Better deflate tree encoding. New compression tweak settings. + Faster color conversions while decoding. Some internal cleanups. +*) 23 sep 2012: Reduced warnings in Visual Studio a little bit. +*) 1 sep 2012 (!): Removed #define's for giving custom (de)compression functions + and made it work with function pointers instead. +*) 23 jun 2012: Added more filter strategies. Made it easier to use custom alloc + and free functions and toggle #defines from compiler flags. Small fixes. +*) 6 may 2012 (!): Made plugging in custom zlib/deflate functions more flexible. +*) 22 apr 2012 (!): Made interface more consistent, renaming a lot. Removed + redundant C++ codec classes. Reduced amount of structs. Everything changed, + but it is cleaner now imho and functionality remains the same. Also fixed + several bugs and shrinked the implementation code. Made new samples. +*) 6 nov 2011 (!): By default, the encoder now automatically chooses the best + PNG color model and bit depth, based on the amount and type of colors of the + raw image. For this, autoLeaveOutAlphaChannel replaced by auto_choose_color. +*) 9 okt 2011: simpler hash chain implementation for the encoder. +*) 8 sep 2011: lz77 encoder lazy matching instead of greedy matching. +*) 23 aug 2011: tweaked the zlib compression parameters after benchmarking. + A bug with the PNG filtertype heuristic was fixed, so that it chooses much + better ones (it's quite significant). A setting to do an experimental, slow, + brute force search for PNG filter types is added. +*) 17 aug 2011 (!): changed some C zlib related function names. +*) 16 aug 2011: made the code less wide (max 120 characters per line). +*) 17 apr 2011: code cleanup. Bugfixes. Convert low to 16-bit per sample colors. +*) 21 feb 2011: fixed compiling for C90. Fixed compiling with sections disabled. +*) 11 dec 2010: encoding is made faster, based on suggestion by Peter Eastman + to optimize long sequences of zeros. +*) 13 nov 2010: added LodePNG_InfoColor_hasPaletteAlpha and + LodePNG_InfoColor_canHaveAlpha functions for convenience. +*) 7 nov 2010: added LodePNG_error_text function to get error code description. +*) 30 okt 2010: made decoding slightly faster +*) 26 okt 2010: (!) changed some C function and struct names (more consistent). + Reorganized the documentation and the declaration order in the header. +*) 08 aug 2010: only changed some comments and external samples. +*) 05 jul 2010: fixed bug thanks to warnings in the new gcc version. +*) 14 mar 2010: fixed bug where too much memory was allocated for char buffers. +*) 02 sep 2008: fixed bug where it could create empty tree that linux apps could + read by ignoring the problem but windows apps couldn't. +*) 06 jun 2008: added more error checks for out of memory cases. +*) 26 apr 2008: added a few more checks here and there to ensure more safety. +*) 06 mar 2008: crash with encoding of strings fixed +*) 02 feb 2008: support for international text chunks added (iTXt) +*) 23 jan 2008: small cleanups, and #defines to divide code in sections +*) 20 jan 2008: support for unknown chunks allowing using LodePNG for an editor. +*) 18 jan 2008: support for tIME and pHYs chunks added to encoder and decoder. +*) 17 jan 2008: ability to encode and decode compressed zTXt chunks added + Also vareous fixes, such as in the deflate and the padding bits code. +*) 13 jan 2008: Added ability to encode Adam7-interlaced images. Improved + filtering code of encoder. +*) 07 jan 2008: (!) changed LodePNG to use ISO C90 instead of C++. A + C++ wrapper around this provides an interface almost identical to before. + Having LodePNG be pure ISO C90 makes it more portable. The C and C++ code + are together in these files but it works both for C and C++ compilers. +*) 29 dec 2007: (!) changed most integer types to unsigned int + other tweaks +*) 30 aug 2007: bug fixed which makes this Borland C++ compatible +*) 09 aug 2007: some VS2005 warnings removed again +*) 21 jul 2007: deflate code placed in new namespace separate from zlib code +*) 08 jun 2007: fixed bug with 2- and 4-bit color, and small interlaced images +*) 04 jun 2007: improved support for Visual Studio 2005: crash with accessing + invalid std::vector element [0] fixed, and level 3 and 4 warnings removed +*) 02 jun 2007: made the encoder add a tag with version by default +*) 27 may 2007: zlib and png code separated (but still in the same file), + simple encoder/decoder functions added for more simple usage cases +*) 19 may 2007: minor fixes, some code cleaning, new error added (error 69), + moved some examples from here to lodepng_examples.cpp +*) 12 may 2007: palette decoding bug fixed +*) 24 apr 2007: changed the license from BSD to the zlib license +*) 11 mar 2007: very simple addition: ability to encode bKGD chunks. +*) 04 mar 2007: (!) tEXt chunk related fixes, and support for encoding + palettized PNG images. Plus little interface change with palette and texts. +*) 03 mar 2007: Made it encode dynamic Huffman shorter with repeat codes. + Fixed a bug where the end code of a block had length 0 in the Huffman tree. +*) 26 feb 2007: Huffman compression with dynamic trees (BTYPE 2) now implemented + and supported by the encoder, resulting in smaller PNGs at the output. +*) 27 jan 2007: Made the Adler-32 test faster so that a timewaste is gone. +*) 24 jan 2007: gave encoder an error interface. Added color conversion from any + greyscale type to 8-bit greyscale with or without alpha. +*) 21 jan 2007: (!) Totally changed the interface. It allows more color types + to convert to and is more uniform. See the manual for how it works now. +*) 07 jan 2007: Some cleanup & fixes, and a few changes over the last days: + encode/decode custom tEXt chunks, separate classes for zlib & deflate, and + at last made the decoder give errors for incorrect Adler32 or Crc. +*) 01 jan 2007: Fixed bug with encoding PNGs with less than 8 bits per channel. +*) 29 dec 2006: Added support for encoding images without alpha channel, and + cleaned out code as well as making certain parts faster. +*) 28 dec 2006: Added "Settings" to the encoder. +*) 26 dec 2006: The encoder now does LZ77 encoding and produces much smaller files now. + Removed some code duplication in the decoder. Fixed little bug in an example. +*) 09 dec 2006: (!) Placed output parameters of public functions as first parameter. + Fixed a bug of the decoder with 16-bit per color. +*) 15 okt 2006: Changed documentation structure +*) 09 okt 2006: Encoder class added. It encodes a valid PNG image from the + given image buffer, however for now it's not compressed. +*) 08 sep 2006: (!) Changed to interface with a Decoder class +*) 30 jul 2006: (!) LodePNG_InfoPng , width and height are now retrieved in different + way. Renamed decodePNG to decodePNGGeneric. +*) 29 jul 2006: (!) Changed the interface: image info is now returned as a + struct of type LodePNG::LodePNG_Info, instead of a vector, which was a bit clumsy. +*) 28 jul 2006: Cleaned the code and added new error checks. + Corrected terminology "deflate" into "inflate". +*) 23 jun 2006: Added SDL example in the documentation in the header, this + example allows easy debugging by displaying the PNG and its transparency. +*) 22 jun 2006: (!) Changed way to obtain error value. Added + loadFile function for convenience. Made decodePNG32 faster. +*) 21 jun 2006: (!) Changed type of info vector to unsigned. + Changed position of palette in info vector. Fixed an important bug that + happened on PNGs with an uncompressed block. +*) 16 jun 2006: Internally changed unsigned into unsigned where + needed, and performed some optimizations. +*) 07 jun 2006: (!) Renamed functions to decodePNG and placed them + in LodePNG namespace. Changed the order of the parameters. Rewrote the + documentation in the header. Renamed files to lodepng.cpp and lodepng.h +*) 22 apr 2006: Optimized and improved some code +*) 07 sep 2005: (!) Changed to std::vector interface +*) 12 aug 2005: Initial release (C++, decoder only) + + +12. contact information +----------------------- + +Feel free to contact me with suggestions, problems, comments, ... concerning +LodePNG. If you encounter a PNG image that doesn't work properly with this +decoder, feel free to send it and I'll use it to find and fix the problem. + +My email address is (puzzle the account and domain together with an @ symbol): +Domain: gmail dot com. +Account: lode dot vandevenne. + + +Copyright (c) 2005-2013 Lode Vandevenne +*/ diff --git a/plugingui/nativewindow.h b/plugingui/nativewindow.h new file mode 100644 index 0000000..d68909d --- /dev/null +++ b/plugingui/nativewindow.h @@ -0,0 +1,57 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * nativewindow.h + * + * Fri Dec 28 18:46:01 CET 2012 + * Copyright 2012 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#ifndef __DRUMGIZMO_NATIVEWINDOW_H__ +#define __DRUMGIZMO_NATIVEWINDOW_H__ + +#include + +#include "guievent.h" + +namespace GUI { + +class NativeWindow { +public: + NativeWindow() {} + virtual ~NativeWindow() {} + + virtual void setFixedSize(int width, int height) = 0; + virtual void resize(int width, int height) = 0; + virtual void move(int x, int y) = 0; + virtual void show() = 0; + virtual void setCaption(const std::string &caption) = 0; + virtual void hide() = 0; + virtual void handleBuffer() = 0; + virtual void redraw() = 0; + virtual void grabMouse(bool grab) = 0; + + virtual bool hasEvent() = 0; + virtual Event *getNextEvent() = 0; +}; + +}; + +#endif/*__DRUMGIZMO_NATIVEWINDOW_H__*/ diff --git a/plugingui/nativewindow_pugl.cc b/plugingui/nativewindow_pugl.cc new file mode 100644 index 0000000..45cddab --- /dev/null +++ b/plugingui/nativewindow_pugl.cc @@ -0,0 +1,212 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * nativewindow_pugl.cc + * + * Fri Dec 28 18:45:57 CET 2012 + * Copyright 2012 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "nativewindow_pugl.h" + +#include +#include + +#include "hugin.hpp" +#include "guievent.h" + +static GUI::Window* windowptr; +static std::list eventq; + +static void onDisplay(PuglView* view) +{ + + glDisable(GL_DEPTH_TEST); + glClear(GL_COLOR_BUFFER_BIT); + + GLuint image; + + glGenTextures(1, &image); + + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); + + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); //GL_NEAREST = no smoothing + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + glTexEnvi(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE, GL_REPLACE); + + glPixelStorei(GL_UNPACK_ALIGNMENT, 1); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, windowptr->wpixbuf.width, + windowptr->wpixbuf.height, 0, GL_RGB, GL_UNSIGNED_BYTE, + windowptr->wpixbuf.buf); + + glEnable(GL_TEXTURE_2D); + + glBegin(GL_QUADS); + glTexCoord2d(0.0, 0.0); glVertex2f(0.0, 0.0); + glTexCoord2d(0.0, 1.0); glVertex2f(0.0, windowptr->wpixbuf.height); + glTexCoord2d(1.0, 1.0); glVertex2f(windowptr->wpixbuf.width, windowptr->wpixbuf.height); + glTexCoord2d(1.0, 0.0); glVertex2f(windowptr->wpixbuf.width, 0.0); + glEnd(); + + glDeleteTextures(1, &image); + glDisable(GL_TEXTURE_2D); + glFlush(); + + puglPostRedisplay(view); +} + +static void onMouse(PuglView* view, int button, bool press, int x, int y) +{ + DEBUG(nativewindow_pugl, "Mouse %d %s at (%d,%d)\n", button, + press? "down":"up", x, y); + + GUI::ButtonEvent* e = new GUI::ButtonEvent(); + e->x = x; + e->y = y; + e->button = button; + e->direction = press?1:-1; + e->doubleclick = false; + + eventq.push_back(e); +} + +static void onKeyboard(PuglView* view, bool press, uint32_t key) +{ + if(press) { + GUI::KeyEvent* e = new GUI::KeyEvent(); + e->direction = press?-1:1; + + printf("%d\n", key); + + switch(key) { + case PUGL_KEY_LEFT: e->keycode = GUI::KeyEvent::KEY_LEFT; break; + case PUGL_KEY_RIGHT: e->keycode = GUI::KeyEvent::KEY_RIGHT; break; + case PUGL_KEY_UP: e->keycode = GUI::KeyEvent::KEY_UP; break; + case PUGL_KEY_DOWN: e->keycode = GUI::KeyEvent::KEY_DOWN; break; + case PUGL_KEY_PAGE_UP: e->keycode = GUI::KeyEvent::KEY_PGDOWN; break; + case PUGL_KEY_PAGE_DOWN: e->keycode = GUI::KeyEvent::KEY_PGUP; break; + default: e->keycode = GUI::KeyEvent::KEY_UNKNOWN; break; + } + + // TODO: perform character type check + if(e->keycode == GUI::KeyEvent::KEY_UNKNOWN) { + e->keycode = GUI::KeyEvent::KEY_CHARACTER; + e->text.assign(1, (char)key); + } + + printf("\t text: %s\n", e->text.c_str()); + + eventq.push_back(e); + } +} + +GUI::NativeWindowPugl::NativeWindowPugl(GUI::Window *window) + : GUI::NativeWindow() +{ + INFO(nativewindow, "Running with PuGL native window\n"); + this->window = window; + windowptr = window; + view = NULL; + init(); +} + +GUI::NativeWindowPugl::~NativeWindowPugl() +{ + puglDestroy(view); +} + +void GUI::NativeWindowPugl::init() { + PuglView* old = view; + if(view) old = view; +// view = puglCreate(0, "DrumgGizmo", window->x(), window->y(), false, true); + view = puglCreate(0, "DrumgGizmo", 370, 330, false, true); + puglSetDisplayFunc(view, onDisplay); + puglSetMouseFunc(view, onMouse); + puglSetKeyboardFunc(view, onKeyboard); + + if(old) free(old); +} + +void GUI::NativeWindowPugl::setFixedSize(int width, int height) +{ +// redraw(); +} + +void GUI::NativeWindowPugl::resize(int width, int height) +{ +// DEBUG(nativewindow_pugl, "Resizing to %dx%d\n", width, height); +// init(); +// redraw(); +} + +void GUI::NativeWindowPugl::move(int x, int y) +{ +// redraw(); +} + +void GUI::NativeWindowPugl::show() +{ +// redraw(); +} + +void GUI::NativeWindowPugl::hide() +{ +// redraw(); +} + +void GUI::NativeWindowPugl::handleBuffer() +{ + onDisplay(view); +} + +void GUI::NativeWindowPugl::redraw() +{ +// handleBuffer(); +} + +void GUI::NativeWindowPugl::setCaption(const std::string &caption) +{ +// redraw(); +} + +void GUI::NativeWindowPugl::grabMouse(bool grab) +{ +// redraw(); +} + +bool GUI::NativeWindowPugl::hasEvent() +{ + // dirty hack - assume that this function is called enough times to get fluent gui + // ^^ Bad assumption + puglProcessEvents(view); + return !eventq.empty(); +} + +GUI::Event *GUI::NativeWindowPugl::getNextEvent() +{ + Event *event = NULL; + + if(!eventq.empty()) { + event = eventq.front(); + eventq.pop_front(); + } + return event; +} diff --git a/plugingui/nativewindow_pugl.h b/plugingui/nativewindow_pugl.h new file mode 100644 index 0000000..cf761fd --- /dev/null +++ b/plugingui/nativewindow_pugl.h @@ -0,0 +1,72 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * nativewindow_pugl.h + * + * Fri Dec 28 18:45:56 CET 2012 + * Copyright 2012 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#ifndef __DRUMGIZMO_NATIVEWINDOW_PUGL_H__ +#define __DRUMGIZMO_NATIVEWINDOW_PUGL_H__ +#endif/*__DRUMGIZMO_NATIVEWINDOW_PUGL_H__*/ + +#include "nativewindow.h" + +#include "window.h" + +#include "pugl.h" + +#ifdef __APPLE__ +# include +#else +# include +# include +# include +#endif + +namespace GUI { + +class Window; +class NativeWindowPugl : public NativeWindow { +public: + NativeWindowPugl(GUI::Window *window); + ~NativeWindowPugl(); + + void init(); + void setFixedSize(int width, int height); + void resize(int width, int height); + void move(int x, int y); + void show(); + void setCaption(const std::string &caption); + void hide(); + void handleBuffer(); + void redraw(); + void grabMouse(bool grab); + + bool hasEvent(); + Event *getNextEvent(); + +private: + GUI::Window *window; + PuglView* view; +}; + +}; diff --git a/plugingui/nativewindow_win32.cc b/plugingui/nativewindow_win32.cc new file mode 100644 index 0000000..871bafe --- /dev/null +++ b/plugingui/nativewindow_win32.cc @@ -0,0 +1,400 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * nativewindow_win32.cc + * + * Fri Dec 28 18:45:52 CET 2012 + * Copyright 2012 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "nativewindow_win32.h" + +#ifdef WIN32 + +#include "window.h" + +LRESULT CALLBACK dialogProc(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp) +{ + GUI::NativeWindowWin32 *native = + (GUI::NativeWindowWin32 *)GetWindowLongPtr(hwnd, GWLP_USERDATA); + + // NOTE: 'native' is NULL intil the WM_CREATE message has been handled. + if(!native) return DefWindowProc(hwnd, msg, wp, lp); + + GUI::Window *window = native->window; + + switch(msg) { + case WM_SIZE: + { + static bool first = true; + if(!first) { + GUI::ResizeEvent *e = new GUI::ResizeEvent(); + e->width = LOWORD(lp); + e->height = HIWORD(lp); + native->event = e; + first = false; + } + } + break; + + case WM_MOVE: + { +// GUI::MoveEvent *e = new GUI::MoveEvent(); +// e->x = (int)(short) LOWORD(lp); +// e->y = (int)(short) HIWORD(lp); +// native->event = e; + } + break; + + case WM_CLOSE: + { + GUI::CloseEvent *e = new GUI::CloseEvent(); + native->event = e; + } + break; +// HWND child, old; +// old = 0; + +// numDialogs--; + +// while(old != (child = GetNextDlgGroupItem(hwnd, hwnd, false))) { +// old = child; +// EndDialog(child, 0); +// } + +// if(numDialogs) EndDialog(hwnd, 0); +// else PostQuitMessage(0); +// return 0; + case WM_MOUSEMOVE: + { + + GUI::MouseMoveEvent *e = new GUI::MouseMoveEvent(); + e->x = (int)(short) LOWORD(lp); + e->y = (int)(short) HIWORD(lp); + native->event = e; + } + break; + + case WM_MOUSEWHEEL: + { + GUI::ScrollEvent *e = new GUI::ScrollEvent(); + + // NOTE: lp is coordinates in screen space, not client space. + POINT p; + p.x = (int)(short) LOWORD(lp); + p.y = (int)(short) HIWORD(lp); + ScreenToClient(hwnd, &p); + + e->x = p.x; + e->y = p.y; + e->delta = -1 * (short)HIWORD(wp) / 60; + native->event = e; + } + break; + + case WM_LBUTTONUP: + case WM_LBUTTONDBLCLK: + case WM_LBUTTONDOWN: + case WM_RBUTTONUP: + case WM_RBUTTONDBLCLK: + case WM_RBUTTONDOWN: + case WM_MBUTTONUP: + case WM_MBUTTONDBLCLK: + case WM_MBUTTONDOWN: + { + GUI::ButtonEvent *e = new GUI::ButtonEvent(); + e->x = (int)(short) LOWORD(lp); + e->y = (int)(short) HIWORD(lp); + + if(msg == WM_LBUTTONUP || + msg == WM_LBUTTONDBLCLK || + msg == WM_LBUTTONDOWN) e->button = 0; + + if(msg == WM_RBUTTONUP || + msg == WM_RBUTTONDBLCLK || + msg == WM_RBUTTONDOWN) e->button = 1; + + if(msg == WM_MBUTTONUP || + msg == WM_MBUTTONDBLCLK || + msg == WM_MBUTTONDOWN) e->button = 2; + + e->direction = 0; + if(msg == WM_LBUTTONUP || + msg == WM_RBUTTONUP || + msg == WM_MBUTTONUP) e->direction = -1; + + if(msg == WM_LBUTTONDOWN || + msg == WM_RBUTTONDOWN || + msg == WM_MBUTTONDOWN) e->direction = 1; + + e->doubleclick = (msg == WM_LBUTTONDBLCLK || + msg == WM_RBUTTONDBLCLK || + msg == WM_MBUTTONDBLCLK); + + native->event = e; + } + break; + + case WM_KEYDOWN: + { + GUI::KeyEvent *e = new GUI::KeyEvent(); + //printf("wp: %d\n", wp); + switch(wp) { + case 37: e->keycode = GUI::KeyEvent::KEY_LEFT; break; + case 39: e->keycode = GUI::KeyEvent::KEY_RIGHT; break; + case 38: e->keycode = GUI::KeyEvent::KEY_UP; break; + case 40: e->keycode = GUI::KeyEvent::KEY_DOWN; break; + case 8: e->keycode = GUI::KeyEvent::KEY_BACKSPACE; break; + case 46: e->keycode = GUI::KeyEvent::KEY_DELETE; break; + case 36: e->keycode = GUI::KeyEvent::KEY_HOME; break; + case 35: e->keycode = GUI::KeyEvent::KEY_END; break; + case 33: e->keycode = GUI::KeyEvent::KEY_PGUP; break; + case 34: e->keycode = GUI::KeyEvent::KEY_PGDOWN; break; + case 13: e->keycode = GUI::KeyEvent::KEY_ENTER; break; + default: e->keycode = GUI::KeyEvent::KEY_UNKNOWN; break; + } + e->text = ""; + e->direction = -1; + native->event = e; + } + break; + + case WM_CHAR: + { + //printf("WM_CHAR %d %d\n", (int)lp, (int)wp); + if(wp >= ' ') { // Filter control chars. + GUI::KeyEvent *e = new GUI::KeyEvent(); + e->keycode = GUI::KeyEvent::KEY_CHARACTER; + e->text += (char)wp; + e->direction = -1; + native->event = e; + } + } + break; + + case WM_PAINT: + { + GUI::RepaintEvent *e = new GUI::RepaintEvent(); + e->x = 0; + e->y = 0; + e->width = 100; + e->height = 100; + native->event = e; + + // Move to window.h (in class) + HDC pDC; + HBITMAP old; + HBITMAP ourbitmap; + int * framebuf; + GUI::PixelBuffer &px = window->wpixbuf; + + { // Create bitmap (move to window.cc) + HDC hDC; + BITMAPINFO bitmapinfo; + hDC = CreateCompatibleDC(NULL); + bitmapinfo.bmiHeader.biSize = sizeof(BITMAPINFOHEADER); + bitmapinfo.bmiHeader.biWidth = px.width; + bitmapinfo.bmiHeader.biHeight = -px.height; /* top-down */ + bitmapinfo.bmiHeader.biPlanes = 1; + bitmapinfo.bmiHeader.biBitCount = 32; + bitmapinfo.bmiHeader.biCompression = BI_RGB; + bitmapinfo.bmiHeader.biSizeImage = 0; + bitmapinfo.bmiHeader.biClrUsed = 256; + bitmapinfo.bmiHeader.biClrImportant = 256; + ourbitmap=CreateDIBSection(hDC, &bitmapinfo, + DIB_RGB_COLORS, (void**)&framebuf, 0, 0); + pDC=CreateCompatibleDC(NULL); + old = (HBITMAP__*)SelectObject(pDC, ourbitmap); + DeleteDC(hDC); + } + + { // Copy GUI::PixelBuffer to framebuffer (move to window.cc) + int i,j,k; + for (k=0,i=0;i<(int)px.height;i++) { + for (j=0;j<(int)px.width;j++,k++) { + *(framebuf+k)=RGB(px.buf[(j + i * px.width) * 3 + 2], + px.buf[(j + i * px.width) * 3 + 1], + px.buf[(j + i * px.width) * 3 + 0]); + } + } + } + + PAINTSTRUCT ps; + HDC hdc = BeginPaint(native->m_hwnd, &ps); + BitBlt(hdc, 0, 0, px.width, px.height, pDC, 0, 0, SRCCOPY); + EndPaint(native->m_hwnd, &ps); + + { // Destroy bitmap (move to window.cc) + SelectObject(pDC,old); + DeleteDC(pDC); + DeleteObject(ourbitmap); + + } + } + return DefWindowProc(hwnd, msg, wp, lp); + } + + return DefWindowProc(hwnd, msg, wp, lp); +} + +// Delared in eventhandler.cc +LRESULT CALLBACK dialogProc(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp); + +GUI::NativeWindowWin32::NativeWindowWin32(GUI::Window *window) + : GUI::NativeWindow() +{ + this->window = window; + + WNDCLASSEX wcex; + WNDID wndId; + + m_hwnd = 0; + m_className = NULL; + event = NULL; + + memset(&wcex, 0, sizeof(wcex)); + + //Time to register a window class. + //Generic flags and everything. cbWndExtra is the size of a pointer to an + // object - we need this in the wndproc handler. + + wcex.cbSize = sizeof(WNDCLASSEX); + wcex.style = CS_DBLCLKS;//class_style; + wcex.lpfnWndProc = (WNDPROC)dialogProc; + wcex.hCursor = LoadCursor(NULL, IDC_ARROW); + // Set data: + wcex.cbWndExtra = sizeof(NativeWindowWin32*); // Size of data. + wcex.hInstance = GetModuleHandle(NULL); + + // if(ex_style && WS_EX_TRANSPARENT == WS_EX_TRANSPARENT) { + // wcex.hbrBackground = NULL; + // } else { + wcex.hbrBackground = NULL;//(HBRUSH) COLOR_BACKGROUND + 1; + // } + + wcex.lpszClassName = m_className = strdup("DrumGizmoClass"); + + RegisterClassEx(&wcex); + + /* + if(parent) { + style = style | WS_CHILD; + wndId = parent->getWndId(); + } else { + */ + //style = style | WS_OVERLAPPEDWINDOW; + wndId = 0; + // } + + m_hwnd = CreateWindowEx(0/*ex_style*/, m_className, + "DGBasisWidget", + (WS_OVERLAPPEDWINDOW | WS_VISIBLE), + window->x(), window->y(), + window->width(), window->height(), + wndId, NULL, + GetModuleHandle(NULL), NULL); + + SetWindowLongPtr(m_hwnd, GWLP_USERDATA, (LONG_PTR)this); +} + +GUI::NativeWindowWin32::~NativeWindowWin32() +{ + UnregisterClass(m_className, GetModuleHandle(NULL)); + free(m_className); +} + +void GUI::NativeWindowWin32::setFixedSize(int width, int height) +{ + resize(width, height); + LONG style = GetWindowLong(m_hwnd, GWL_STYLE); + style &= ~(WS_THICKFRAME | WS_MAXIMIZEBOX); + SetWindowLong(m_hwnd, GWL_STYLE, style); +} + +void GUI::NativeWindowWin32::resize(int width, int height) +{ + SetWindowPos(m_hwnd, NULL, -1, -1, (int)width, (int)height, SWP_NOMOVE); + RECT r; + GetClientRect(m_hwnd, &r); + int w = width - r.right; + int h = height - r.bottom; + + SetWindowPos(m_hwnd, NULL, -1, -1, width + w, height + h, SWP_NOMOVE); +} + +void GUI::NativeWindowWin32::move(int x, int y) +{ + SetWindowPos(m_hwnd, NULL, (int)x, (int)y, -1, -1, SWP_NOSIZE); +} + +void GUI::NativeWindowWin32::show() +{ + ShowWindow(m_hwnd, SW_SHOW); +} + +void GUI::NativeWindowWin32::handleBuffer() +{ +} + +void GUI::NativeWindowWin32::hide() +{ + ShowWindow(m_hwnd, SW_HIDE); +} + +void GUI::NativeWindowWin32::redraw() +{ + RedrawWindow(m_hwnd, NULL, NULL, RDW_ERASE|RDW_INVALIDATE); + UpdateWindow(m_hwnd); +} + +void GUI::NativeWindowWin32::setCaption(const std::string &caption) +{ + SetWindowText(m_hwnd, caption.c_str()); +} + +void GUI::NativeWindowWin32::grabMouse(bool grab) +{ + if(grab) SetCapture(m_hwnd); + else ReleaseCapture(); +} + +bool GUI::NativeWindowWin32::hasEvent() +{ + MSG msg; + return PeekMessage(&msg, NULL, 0, 0, 0) != 0; +} + +GUI::Event *GUI::NativeWindowWin32::getNextEvent() +{ + Event *event = NULL; + + MSG msg; + if(GetMessage(&msg, NULL, 0, 0)) { + TranslateMessage(&msg); + DispatchMessage(&msg); + } + + event = this->event; + this->event = NULL; + + return event; +} + +#endif/*WIN32*/ diff --git a/plugingui/nativewindow_win32.h b/plugingui/nativewindow_win32.h new file mode 100644 index 0000000..6afc7b1 --- /dev/null +++ b/plugingui/nativewindow_win32.h @@ -0,0 +1,71 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * nativewindow_win32.h + * + * Fri Dec 28 18:45:51 CET 2012 + * Copyright 2012 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#ifndef __DRUMGIZMO_NATIVEWINDOW_WIN32_H__ +#define __DRUMGIZMO_NATIVEWINDOW_WIN32_H__ + +#ifdef WIN32 + +#include "nativewindow.h" + +#include +typedef HWND WNDID; + +namespace GUI { + +class Window; +class Event; + +class NativeWindowWin32 : public NativeWindow { +public: + NativeWindowWin32(GUI::Window *window); + ~NativeWindowWin32(); + + void setFixedSize(int width, int height); + void resize(int width, int height); + void move(int x, int y); + void show(); + void setCaption(const std::string &caption); + void hide(); + void handleBuffer(); + void redraw(); + void grabMouse(bool grab); + + bool hasEvent(); + Event *getNextEvent(); + + // Needed by dialogProc + GUI::Window *window; + WNDID m_hwnd; + char *m_className; + Event *event; +}; + +}; + +#endif/*WIN32*/ + +#endif/*__DRUMGIZMO_NATIVEWINDOW_WIN32_H__*/ diff --git a/plugingui/nativewindow_x11.cc b/plugingui/nativewindow_x11.cc new file mode 100644 index 0000000..cb6cf73 --- /dev/null +++ b/plugingui/nativewindow_x11.cc @@ -0,0 +1,388 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * nativewindow_x11.cc + * + * Fri Dec 28 18:45:57 CET 2012 + * Copyright 2012 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "nativewindow_x11.h" + +#ifdef X11 +#include +#include + +#include "window.h" + +GUI::NativeWindowX11::NativeWindowX11(GUI::Window *window) + : GUI::NativeWindow() +{ + display = XOpenDisplay(NULL); + + this->window = window; + buffer = NULL; + + // Get some colors + int blackColor = BlackPixel(display, DefaultScreen(display)); + + ::Window w = DefaultRootWindow(display); + + // Create the window + xwindow = XCreateSimpleWindow(display, + w, + window->x(), window->y(), + window->width(), window->height(), + 0, + blackColor, blackColor); + + XSelectInput(display, xwindow, + StructureNotifyMask | + PointerMotionMask | + ButtonPressMask | + ButtonReleaseMask | + KeyPressMask | + KeyReleaseMask| + ExposureMask | + StructureNotifyMask | + SubstructureNotifyMask); + + // register interest in the delete window message + wmDeleteMessage = XInternAtom(display, "WM_DELETE_WINDOW", false); + XSetWMProtocols(display, xwindow, &wmDeleteMessage, 1); + + // "Map" the window (that is, make it appear on the screen) + XMapWindow(display, xwindow); + + // Create a "Graphics Context" + gc = XCreateGC(display, xwindow, 0, NULL); +} + +GUI::NativeWindowX11::~NativeWindowX11() +{ + XDestroyWindow(display, xwindow); + //widgets.erase(window); + XCloseDisplay(display); +} + +void GUI::NativeWindowX11::setFixedSize(int width, int height) +{ + resize(width, height); + + XSizeHints *size_hints; + size_hints = XAllocSizeHints(); + + if(size_hints == NULL) { + //fprintf(stderr,"XMallocSizeHints() failed\n"); + //exit(1); + return; + } + + size_hints->flags = USPosition | PMinSize | PMaxSize; + size_hints->min_width = size_hints->max_width = width; + size_hints->min_height = size_hints->max_height = height; + /* + size_hints->min_aspect.x = window->width()/window->height(); + size_hints->max_aspect.x = window->width()/window->height(); + size_hints->min_aspect.y = window->width()/window->height(); + size_hints->max_aspect.y = size_hints->min_aspect.y; + */ + XSetWMNormalHints(display, xwindow, size_hints); +} + +void GUI::NativeWindowX11::resize(int width, int height) +{ + XResizeWindow(display, xwindow, width, height); +} + +void GUI::NativeWindowX11::move(int x, int y) +{ + XMoveWindow(display, xwindow, x, y); +} + +void GUI::NativeWindowX11::show() +{ + XMapWindow(display, xwindow); +} + +void GUI::NativeWindowX11::hide() +{ + XUnmapWindow(display, xwindow); +} + +static int get_byte_order (void) +{ + union { + char c[sizeof(short)]; + short s; + } order; + + order.s = 1; + if ((1 == order.c[0])) { + return LSBFirst; + } else { + return MSBFirst; + } +} + +static XImage *create_image_from_buffer(Display *dis, int screen, + unsigned char *buf, + int width, int height) +{ + int depth; + XImage *img = NULL; + Visual *vis; + double rRatio; + double gRatio; + double bRatio; + int outIndex = 0; + int i; + int numBufBytes = (3 * (width * height)); + + depth = DefaultDepth(dis, screen); + vis = DefaultVisual(dis, screen); + + rRatio = vis->red_mask / 255.0; + gRatio = vis->green_mask / 255.0; + bRatio = vis->blue_mask / 255.0; + + if (depth >= 24) { + size_t numNewBufBytes = (4 * (width * height)); + u_int32_t *newBuf = (u_int32_t *)malloc (numNewBufBytes); + + for (i = 0; i < numBufBytes; ++i) { + unsigned int r, g, b; + r = (buf[i] * rRatio); + ++i; + g = (buf[i] * gRatio); + ++i; + b = (buf[i] * bRatio); + + r &= vis->red_mask; + g &= vis->green_mask; + b &= vis->blue_mask; + + newBuf[outIndex] = r | g | b; + ++outIndex; + } + + img = XCreateImage (dis, + CopyFromParent, depth, + ZPixmap, 0, + (char *) newBuf, + width, height, + 32, 0 + ); + + } else if (depth >= 15) { + size_t numNewBufBytes = (2 * (width * height)); + u_int16_t *newBuf = (u_int16_t *)malloc (numNewBufBytes); + + for (i = 0; i < numBufBytes; ++i) { + unsigned int r, g, b; + + r = (buf[i] * rRatio); + ++i; + g = (buf[i] * gRatio); + ++i; + b = (buf[i] * bRatio); + + r &= vis->red_mask; + g &= vis->green_mask; + b &= vis->blue_mask; + + newBuf[outIndex] = r | g | b; + ++outIndex; + } + + img = XCreateImage(dis, CopyFromParent, depth, ZPixmap, 0, (char *) newBuf, + width, height, 16, 0); + } else { + //fprintf (stderr, "This program does not support displays with a depth less than 15."); + return NULL; + } + + XInitImage (img); + /*Set the client's byte order, so that XPutImage knows what to do with the data.*/ + /*The default in a new X image is the server's format, which may not be what we want.*/ + if ((LSBFirst == get_byte_order ())) { + img->byte_order = LSBFirst; + } else { + img->byte_order = MSBFirst; + } + + /*The bitmap_bit_order doesn't matter with ZPixmap images.*/ + img->bitmap_bit_order = MSBFirst; + + return img; +} + +void GUI::NativeWindowX11::handleBuffer() +{ + if(buffer) XDestroyImage(buffer); + buffer = + create_image_from_buffer(display, DefaultScreen(display), + window->wpixbuf.buf, + window->wpixbuf.width, + window->wpixbuf.height); +} + +void GUI::NativeWindowX11::redraw() +{ + // http://stackoverflow.com/questions/6384987/load-image-onto-a-window-using-xlib + if(buffer == NULL) window->updateBuffer(); + XPutImage(display, xwindow, gc, buffer, 0, 0, 0, 0, + window->width(), window->height()); + XFlush(display); +} + +void GUI::NativeWindowX11::setCaption(const std::string &caption) +{ + XStoreName(display, xwindow, caption.c_str()); +} + +void GUI::NativeWindowX11::grabMouse(bool grab) +{ + (void)grab; + // Don't need to do anything on this platoform... +} + +bool GUI::NativeWindowX11::hasEvent() +{ + return XPending(display); +} + +GUI::Event *GUI::NativeWindowX11::getNextEvent() +{ + Event *event = NULL; + + XEvent xe; + XNextEvent(display, &xe); + + if(xe.type == MotionNotify) { + while(true) { // Hack to make sure only the last event is played. + if(!hasEvent()) break; + XEvent nxe; + XPeekEvent(display, &nxe); + if(nxe.type != MotionNotify) break; + XNextEvent(display, &xe); + } + + MouseMoveEvent *e = new MouseMoveEvent(); + e->window_id = xe.xmotion.window; + e->x = xe.xmotion.x; + e->y = xe.xmotion.y; + event = e; + } + + if(xe.type == Expose && xe.xexpose.count == 0) { + RepaintEvent *e = new RepaintEvent(); + e->window_id = xe.xexpose.window; + e->x = xe.xexpose.x; + e->y = xe.xexpose.y; + e->width = xe.xexpose.width; + e->height = xe.xexpose.height; + event = e; + } + + if(xe.type == ConfigureNotify) { + ResizeEvent *e = new ResizeEvent(); + e->window_id = xe.xconfigure.window; + // e->x = xe.xconfigure.x; + // e->y = xe.xconfigure.y; + e->width = xe.xconfigure.width; + e->height = xe.xconfigure.height; + event = e; + } + + if(xe.type == ButtonPress || xe.type == ButtonRelease) { + if(xe.xbutton.button == 4 || xe.xbutton.button == 5) { + int scroll = 1; + while(true) { // Hack to make sure only the last event is played. + if(!hasEvent()) break; + XEvent nxe; + XPeekEvent(display, &nxe); + if(nxe.type != ButtonPress && nxe.type != ButtonRelease) break; + scroll += 1; + XNextEvent(display, &xe); + } + ScrollEvent *e = new ScrollEvent(); + e->window_id = xe.xbutton.window; + e->x = xe.xbutton.x; + e->y = xe.xbutton.y; + e->delta = scroll * (xe.xbutton.button==4?-1:1); + event = e; + } else { + ButtonEvent *e = new ButtonEvent(); + e->window_id = xe.xbutton.window; + e->x = xe.xbutton.x; + e->y = xe.xbutton.y; + e->button = 0; + e->direction = xe.type == ButtonPress?1:-1; + e->doubleclick = + xe.type == ButtonPress && (xe.xbutton.time - last_click) < 200; + + if(xe.type == ButtonPress) last_click = xe.xbutton.time; + event = e; + } + } + + if(xe.type == KeyPress || xe.type == KeyRelease) { + //printf("key: %d\n", xe.xkey.keycode); + KeyEvent *e = new KeyEvent(); + e->window_id = xe.xkey.window; + + switch(xe.xkey.keycode) { + case 113: e->keycode = KeyEvent::KEY_LEFT; break; + case 114: e->keycode = KeyEvent::KEY_RIGHT; break; + case 111: e->keycode = KeyEvent::KEY_UP; break; + case 116: e->keycode = KeyEvent::KEY_DOWN; break; + case 119: e->keycode = KeyEvent::KEY_DELETE; break; + case 22: e->keycode = KeyEvent::KEY_BACKSPACE; break; + case 110: e->keycode = KeyEvent::KEY_HOME; break; + case 115: e->keycode = KeyEvent::KEY_END; break; + case 117: e->keycode = KeyEvent::KEY_PGDOWN; break; + case 112: e->keycode = KeyEvent::KEY_PGUP; break; + case 36: e->keycode = KeyEvent::KEY_ENTER; break; + default: e->keycode = KeyEvent::KEY_UNKNOWN; break; + } + + char buf[1024]; + int sz = XLookupString(&xe.xkey, buf, sizeof(buf), NULL, NULL); + if(sz && e->keycode == KeyEvent::KEY_UNKNOWN) { + e->keycode = KeyEvent::KEY_CHARACTER; + } + e->text.append(buf, sz); + + e->direction = xe.type == KeyPress?1:-1; + event = e; + } + + if(xe.type == ClientMessage && + (unsigned int)xe.xclient.data.l[0] == wmDeleteMessage) { + CloseEvent *e = new CloseEvent(); + event = e; + } + + return event; +} + +#endif/*X11*/ + diff --git a/plugingui/nativewindow_x11.h b/plugingui/nativewindow_x11.h new file mode 100644 index 0000000..3dcc0bb --- /dev/null +++ b/plugingui/nativewindow_x11.h @@ -0,0 +1,72 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * nativewindow_x11.h + * + * Fri Dec 28 18:45:56 CET 2012 + * Copyright 2012 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#ifndef __DRUMGIZMO_NATIVEWINDOW_X11_H__ +#define __DRUMGIZMO_NATIVEWINDOW_X11_H__ +#endif/*__DRUMGIZMO_NATIVEWINDOW_X11_H__*/ + +#ifdef X11 +#include + +#include "nativewindow.h" + +namespace GUI { + +class Window; +class NativeWindowX11 : public NativeWindow { +public: + NativeWindowX11(GUI::Window *window); + ~NativeWindowX11(); + + void setFixedSize(int width, int height); + void resize(int width, int height); + void move(int x, int y); + void show(); + void setCaption(const std::string &caption); + void hide(); + void handleBuffer(); + void redraw(); + void grabMouse(bool grab); + + bool hasEvent(); + Event *getNextEvent(); + +private: + ::Window xwindow; + GC gc; + XImage *buffer; + + GUI::Window *window; + + int last_click; + + Display *display; + Atom wmDeleteMessage; +}; + +}; + +#endif/*X11*/ diff --git a/plugingui/notifier.h b/plugingui/notifier.h new file mode 100644 index 0000000..9f404bb --- /dev/null +++ b/plugingui/notifier.h @@ -0,0 +1,149 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * notifier.h + * + * Thu Sep 3 15:48:39 CEST 2015 + * Copyright 2015 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#pragma once + +#include +#include +#include +#include +#include +#include +#include + +namespace GUI { + +class Listener; +class NotifierBase { +public: + virtual void disconnect(Listener* object) {} +}; + +class Listener { +public: + virtual ~Listener() + { + for(auto signal = signals.begin(); signal != signals.end(); ++signal) { + (*signal)->disconnect(this); + } + } + + void registerNotifier(NotifierBase* signal) + { + signals.insert(signal); + } + + void unregisterNotifier(NotifierBase* signal) + { + signals.erase(signal); + } + + std::set signals; +}; + +template +class Notifier : public NotifierBase { +public: + Notifier() {} + ~Notifier() + { + for(auto slot = slots.begin(); slot != slots.end(); ++slot) { + (*slot).first->unregisterNotifier(this); + } + } + + void connect(Listener* object, std::function slot) + { + slots[object] = slot; + if(object) { + object->registerNotifier(this); + } + } + + void disconnect(Listener* object) + { + slots.erase(object); + } + + void notify(T t, Args...args) + { + for(auto slot = slots.begin(); slot != slots.end(); ++slot) { + (*slot).second(t, args...); + } + } + + std::map> slots; +}; + +} // GUI:: + +template struct seq{}; +template +struct gen_seq : gen_seq{}; +template +struct gen_seq<0, Is...> : seq{}; + +template struct placeholder{}; + +namespace std{ +template +struct is_placeholder< ::placeholder > : integral_constant{}; +} // std:: + +namespace aux{ +template +auto easy_bind(seq, F&& f, Ts&&... vs) + -> decltype(std::bind(std::forward(f), std::forward(vs)..., ::placeholder<1 + Is>()...)) +{ + return std::bind(std::forward(f), std::forward(vs)..., ::placeholder<1 + Is>()...); +} +} // aux:: + +template +auto mem_bind(R (C::*ptmf)(FArgs...), Args&&... vs) + -> decltype(aux::easy_bind(gen_seq<(sizeof...(FArgs) + 1) - sizeof...(Args)>(), ptmf, std::forward(vs)...)) +{ + // the +1s for 'this' argument + static_assert(sizeof...(Args) <= sizeof...(FArgs) + 1, "too many arguments to mem_bind"); + return aux::easy_bind(gen_seq<(sizeof...(FArgs) + 1) - sizeof...(Args)>(), ptmf, std::forward(vs)...); +} + +template +auto mem_bind(T C::*ptmd, Args&&... vs) + -> decltype(aux::easy_bind(gen_seq<1 - sizeof...(Args)>(), ptmd, std::forward(vs)...)) +{ + // just 'this' argument + static_assert(sizeof...(Args) <= 1, "too many arguments to mem_bind"); + return aux::easy_bind(gen_seq<1 - sizeof...(Args)>(), ptmd, std::forward(vs)...); +} + +//#define obj_connect_old(SRC, SIG, TAR, SLO) (SRC).SIG.connect(&(TAR), mem_bind(&decltype(TAR)::SLO, TAR)) + +#define fun_connect(SRC, SIG, SLO) \ + (SRC).SIG.connect(nullptr, SLO) + +#define obj_connect(SRC, SIG, TAR, SLO) \ + (SRC)->SIG.connect(TAR, mem_bind(&SLO, std::ref(*TAR))) diff --git a/plugingui/painter.cc b/plugingui/painter.cc new file mode 100644 index 0000000..842ff11 --- /dev/null +++ b/plugingui/painter.cc @@ -0,0 +1,488 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * painter.cc + * + * Wed Oct 12 19:48:45 CEST 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "painter.h" + +#include "window.h" + +#include + +GUI::Painter::Painter(GUI::Widget *widget) +{ + this->widget = widget; + widget->window()->beginPaint(); + pixbuf = &widget->pixbuf; + colour = Colour(0, 0, 0, 0.5); +} + +GUI::Painter::~Painter() +{ + widget->window()->endPaint(); + flush(); +} + +void GUI::Painter::setColour(Colour colour) +{ + this->colour = colour; +} + +void GUI::Painter::plot(int x, int y, double c) +{ + // plot the pixel at (x, y) with brightness c (where 0 ≤ c ≤ 1) + pixbuf->addPixel(x, y, + (unsigned char)(colour.red * 255.0), + (unsigned char)(colour.green * 255.0), + (unsigned char)(colour.blue * 255.0), + (unsigned char)(colour.alpha * 255 * c)); + +} + +#include +double GUI::Painter::ipart(double x) +{ + return floor(x); //integer part of x' +} + +double GUI::Painter::round(double x) +{ + return ipart(x + 0.5); +} + +double GUI::Painter::fpart(double x) +{ + return x - ipart(x);//'fractional part of x' +} + +double GUI::Painter::rfpart(double x) +{ + return 1 - fpart(x); +} + + +#define SWAP(x, y) { int tmp = x; x = y; y = tmp; } +void GUI::Painter::drawLine(int x0, int y0, int x1, int y1) +{ + bool steep = abs(y1 - y0) > abs(x1 - x0); + + if(steep) { + SWAP(x0, y0); + SWAP(x1, y1); + } + if(x0 > x1) { + SWAP(x0, x1); + SWAP(y0, y1); + } + + double dx = x1 - x0; + double dy = y1 - y0; + double gradient = dy / dx; + + // Handle first endpoint: + double xend = round(x0); + double yend = y0 + gradient * (xend - x0); + //double xgap = rfpart(x0 + 0.5); + double xpxl1 = xend; //this will be used in the main loop + double ypxl1 = ipart(yend); + + if(steep) { + plot(ypxl1, xpxl1, 1); + //plot(ypxl1, xpxl1, rfpart(yend) * xgap); + //plot(ypxl1+1, xpxl1, fpart(yend) * xgap); + } else { + plot(xpxl1, ypxl1, 1); + //plot(xpxl1, ypxl1 , rfpart(yend) * xgap); + //plot(xpxl1, ypxl1+1, fpart(yend) * xgap); + } + + double intery = yend + gradient; // first y-intersection for the main loop + + // Handle second endpoint: + xend = round(x1); + yend = y1 + gradient * (xend - x1); + //xgap = fpart(x1 + 0.5); + double xpxl2 = xend; //this will be used in the main loop + double ypxl2 = ipart(yend); + + if(steep) { + plot(ypxl2, xpxl2, 1); + //plot(ypxl2 , xpxl2, rfpart(yend) * xgap); + //plot(ypxl2+1, xpxl2, fpart(yend) * xgap); + } else { + plot(xpxl2, ypxl2, 1); + //plot(xpxl2, ypxl2, rfpart(yend) * xgap); + //plot(xpxl2, ypxl2+1, fpart(yend) * xgap); + } + + // main loop + for(int x = xpxl1 + 1; x <= xpxl2 - 1; x++) { + if(steep) { + plot(ipart(intery) , x, rfpart(intery)); + plot(ipart(intery)+1, x, fpart(intery)); + } else { + plot(x, ipart (intery), rfpart(intery)); + plot(x, ipart (intery)+1, fpart(intery)); + } + intery += gradient; + } +} + +void GUI::Painter::drawRectangle(int x1, int y1, int x2, int y2) +{ + drawLine(x1, y1, x2 - 1, y1); + drawLine(x2, y1, x2, y2 - 1); + drawLine(x1 + 1, y2, x2, y2); + drawLine(x1, y1 + 1, x1, y2); +} + +void GUI::Painter::drawFilledRectangle(int x1, int y1, int x2, int y2) +{ + for(int y = y1; y < y2; y++) { + drawLine(x1, y, x2, y); + } +} + +void GUI::Painter::clear() +{ + for(int x = 0; x < (int)pixbuf->width; x++) { + for(int y = 0; y < (int)pixbuf->height; y++) { + pixbuf->setPixel(x, y, 0, 0, 0, 0); + } + } +} + +void GUI::Painter::drawText(int x0, int y0, GUI::Font &font, std::string text, + bool nocolour) +{ + PixelBufferAlpha *textbuf = font.render(text); + if(nocolour) { + for(size_t x = 0; x < textbuf->width; x++) { + for(size_t y = 0; y < textbuf->height; y++) { + unsigned char r,g,b,a; + textbuf->pixel(x, y, &r, &g, &b, &a); + pixbuf->addPixel(x + x0, y + y0 - textbuf->height, r,g,b,a); + } + } + } else { + for(size_t x = 0; x < textbuf->width; x++) { + for(size_t y = 0; y < textbuf->height; y++) { + unsigned char r,g,b,a; + textbuf->pixel(x, y, &r, &g, &b, &a); + pixbuf->addPixel(x + x0, y + y0 - textbuf->height, + colour.red * 255, + colour.green * 255, + colour.blue * 255, + colour.alpha * a); + } + } + } + + delete textbuf; +} + +#include +void GUI::Painter::drawPoint(int x, int y) +{ + pixbuf->setPixel(x, y, + (unsigned char)(colour.red * 255.0), + (unsigned char)(colour.green * 255.0), + (unsigned char)(colour.blue * 255.0), + (unsigned char)(colour.alpha * 255.0)); +} + +#if 0 +static double distance(double r, double y) +{ + double real_point = sqrt(pow(r, 2) - pow(y, 2)); + return ceil(real_point) - real_point; +} + +double new_color(double i) { + return i * 127; +} + +void GUI::Painter::drawCircle(int cx, int cy, double radius) +{ + // wu_circle($image, $r, $color, $offset_x = null, $offset_y = null) { + //$red = $color["red"]; + //$green = $color["green"]; + //$blue = $color["blue"]; + int offset_x = cx; + int offset_y = cy; + int x = radius; + // int xx = radius; + int y = -1; + // int yy = -1; + double t = 0; + //$color = imagecolorallocate($image, $red, $green, $blue); + while(x > y) { + y++; + double current_distance = distance(radius, y); + if(current_distance < t) { + x--; + } + + double trasparency = new_color(current_distance); + double alpha = trasparency; + double alpha2 = 127.0 - trasparency; + + double color = 1; + + plot(x + offset_x, y + offset_y, color); + plot(x + offset_x - 1, y + offset_y, alpha2 ); + plot(x + offset_x + 1, y + offset_y, alpha ); + + plot(y + offset_x, x + offset_y, color); + plot(y + offset_x, x + offset_y - 1, alpha2); + plot(y + offset_x, x + offset_y + 1, alpha); + + plot(offset_x - x , y + offset_y, color); + plot(offset_x - x + 1, y + offset_y, alpha2); + plot(offset_x - x - 1, y + offset_y, alpha); + + plot(offset_x - y, x + offset_y, color); + plot(offset_x - y, x + offset_y - 1, alpha2); + plot(offset_x - y, x + offset_y + 1, alpha); + + plot(x + offset_x, offset_y - y, color); + plot(x + offset_x - 1, offset_y - y, alpha2); + plot(x + offset_x + 1, offset_y - y, alpha); + + plot(y + offset_x, offset_y - x, color); + plot(y + offset_x, offset_y - x - 1, alpha); + plot(y + offset_x, offset_y - x + 1, alpha2); + + plot(offset_x - y, offset_y - x, color); + plot(offset_x - y, offset_y - x - 1, alpha); + plot(offset_x - y, offset_y - x + 1, alpha2); + + plot(offset_x - x, offset_y - y, color); + plot(offset_x - x - 1, offset_y - y, alpha); + plot(offset_x - x + 1, offset_y - y, alpha2); + + t = current_distance; + } +} +#else +static void plot4points(GUI::Painter *p, int cx, int cy, int x, int y) +{ + p->drawPoint(cx + x, cy + y); + if(x != 0) p->drawPoint(cx - x, cy + y); + if(y != 0) p->drawPoint(cx + x, cy - y); + if(x != 0 && y != 0) p->drawPoint(cx - x, cy - y); +} + +void GUI::Painter::drawCircle(int cx, int cy, double radius) +{ + int error = -radius; + int x = radius; + int y = 0; + + while(x >= y) { + plot4points(this, cx, cy, x, y); + if(x != y) plot4points(this, cx, cy, y, x); + + error += y; + ++y; + error += y; + + if(error >= 0) { + --x; + error -= x; + error -= x; + } + } +} +#endif + +static void plot4lines(GUI::Painter *p, int cx, int cy, int x, int y) +{ + p->drawLine(cx + x, cy + y, cx - x, cy + y); + if(x != 0) p->drawLine(cx - x, cy + y, cx + x, cy + y); + if(y != 0) p->drawLine(cx + x, cy - y, cx - x, cy - y); + if(x != 0 && y != 0) p->drawLine(cx - x, cy - y, cx + x, cy - y); +} + +void GUI::Painter::drawFilledCircle(int cx, int cy, int radius) +{ + int error = -radius; + int x = radius; + int y = 0; + + while(x >= y) { + plot4lines(this, cx, cy, x, y); + if(x != y) plot4lines(this, cx, cy, y, x); + + error += y; + ++y; + error += y; + + if(error >= 0) { + --x; + error -= x; + error -= x; + } + } +} + +void GUI::Painter::drawImage(int x0, int y0, GUI::Image *image) +{ + size_t fw = image->width(); + size_t fh = image->height(); + + for(size_t x = 0; x < fw; x++) { + for(size_t y = 0; y < fh; y++) { + GUI::Colour c = image->getPixel(x, y); + pixbuf->addPixel(x0 + x, y0 + y, c); + } + } +} + +void GUI::Painter::drawImageStretched(int x0, int y0, GUI::Image *image, + int w, int h) +{ + if(w < 1 || h < 1) return; + + float fw = image->width(); + float fh = image->height(); + + for(int x = 0; x < w; x++) { + for(int y = 0; y < h; y++) { + int lx = ((float)x/(float)w)*fw; + int ly = ((float)y/(float)h)*fh; + GUI::Colour c = image->getPixel(lx, ly); + pixbuf->addPixel(x0 + x, y0 + y, c); + } + } +} + +void GUI::Painter::drawBox(int x, int y, Box *box, int width, int height) +{ + int dx = x; + int dy = y; + + // Top: + + drawImage(dx, dy, box->topLeft); + + dx += box->topLeft->width(); + if(dx < 0 || dy < 0) return; + + drawImageStretched(dx, dy, box->top, + width - box->topRight->width() - box->topLeft->width(), + box->top->height()); + + dx = x + width - box->topRight->width(); + if(dx < 0 || dy < 0) return; + + drawImage(dx, dy, box->topRight); + + // Center + dy = y + box->topLeft->height(); + dx = x + box->left->width(); + if(dx < 0 || dy < 0) return; + + drawImageStretched(dx, dy, box->center, + width - box->left->width() - box->right->width(), + height - box->topLeft->height() - box->bottomLeft->height()); + + // Mid: + dx = x; + dy = y + box->topLeft->height(); + if(dx < 0 || dy < 0) return; + + drawImageStretched(dx, dy, box->left, box->left->width(), + height - box->topLeft->height() - box->bottomLeft->height()); + + dx = x + width - box->right->width(); + dy = y + box->topRight->height(); + if(dx < 0 || dy < 0) return; + + drawImageStretched(dx, dy, box->right, + box->right->width(), + height - box->topRight->height() - box->bottomRight->height()); + + // Bottom: + dx = x; + dy = y + height - box->bottomLeft->height(); + if(dx < 0 || dy < 0) return; + + drawImage(dx, dy, box->bottomLeft); + + dx += box->bottomLeft->width(); + if(dx < 0 || dy < 0) return; + + drawImageStretched(dx, dy, box->bottom, + width - box->bottomRight->width() - box->bottomLeft->width(), + box->bottom->height()); + + dx = x + width - box->bottomRight->width(); + if(dx < 0 || dy < 0) return; + + drawImage(dx, dy, box->bottomRight); +} + +void GUI::Painter::drawBar(int x, int y, Bar *bar, int width, int height) +{ + if(width < ((int)bar->left->width() + (int)bar->right->width() + 1)) { + width = bar->left->width() + bar->right->width() + 1; + } + drawImageStretched(x, y, + bar->left, + bar->left->width(), height); + + drawImageStretched(x + bar->left->width(), y, + bar->center, + width - bar->left->width() - bar->right->width(), height); + + drawImageStretched(x + width - bar->left->width(), y, + bar->right, + bar->right->width(), height); +} + +void GUI::Painter::flush() +{ +#ifdef X11 + // Send the "DrawLine" request to the server + //XFlush(gctx->display); +#endif/*X11*/ +} + +#ifdef TEST_PAINTER +//Additional dependency files +//deps: +//Required cflags (autoconf vars may be used) +//cflags: +//Required link options (autoconf vars may be used) +//libs: +#include "test.h" + +TEST_BEGIN; + +// TODO: Put some testcode here (see test.h for usable macros). + +TEST_END; + +#endif/*TEST_PAINTER*/ diff --git a/plugingui/painter.h b/plugingui/painter.h new file mode 100644 index 0000000..0a93f50 --- /dev/null +++ b/plugingui/painter.h @@ -0,0 +1,97 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * painter.h + * + * Wed Oct 12 19:48:45 CEST 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#ifndef __DRUMGIZMO_PAINTER_H__ +#define __DRUMGIZMO_PAINTER_H__ + +#include + +#include "widget.h" +#include "colour.h" +#include "pixelbuffer.h" +#include "font.h" +#include "image.h" + +namespace GUI { + +class Painter { +public: + Painter(Widget *widget); + ~Painter(); + + void flush(); + + void setColour(Colour colour); + + void drawLine(int x1, int y1, int x2, int y2); + void drawText(int x, int y, Font &font, std::string text, + bool nocolour = false); + void drawRectangle(int x1, int y1, int x2, int y2); + void drawFilledRectangle(int x1, int y1, int x2, int y2); + void drawPoint(int x, int y); + void drawCircle(int x, int y, double r); + void drawFilledCircle(int x, int y, int r); + void drawImage(int x, int y, Image *image); + void drawImageStretched(int x0, int y0, GUI::Image *image, + int width, int height); + + typedef struct { + Image *topLeft; + Image *top; + Image *topRight; + Image *left; + Image *right; + Image *bottomLeft; + Image *bottom; + Image *bottomRight; + Image *center; + } Box; + void drawBox(int x, int y, Box *box, int width, int height); + + typedef struct { + Image *left; + Image *right; + Image *center; + } Bar; + void drawBar(int x, int y, Bar *bar, int width, int height); + + void clear(); + +private: + void plot(int x, int y, double c); + double ipart(double x); + double round(double x); + double fpart(double x); + double rfpart(double x); + + Widget *widget; + PixelBufferAlpha *pixbuf; + Colour colour; +}; + +}; + +#endif/*__DRUMGIZMO_PAINTER_H__*/ diff --git a/plugingui/pixelbuffer.cc b/plugingui/pixelbuffer.cc new file mode 100644 index 0000000..2a6bf6f --- /dev/null +++ b/plugingui/pixelbuffer.cc @@ -0,0 +1,180 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * pixelbuffer.cc + * + * Thu Nov 10 09:00:38 CET 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "pixelbuffer.h" + +#include + +GUI::PixelBuffer::PixelBuffer(size_t width, size_t height) +{ + buf = NULL; + realloc(width, height); +} + +GUI::PixelBuffer::~PixelBuffer() +{ + if(buf) free(buf); +} + +void GUI::PixelBuffer::realloc(size_t width, size_t height) +{ + if(buf) free(buf); + buf = (unsigned char *)calloc(width * height, 3); + this->width = width; + this->height = height; +} + +#define PX(k) (x + y * width) * 3 + k +void GUI::PixelBuffer::setPixel(size_t x, size_t y, + unsigned char red, + unsigned char green, + unsigned char blue, + unsigned char alpha) +{ + if(x >= width || y >= height) return; + /* + float a,b; + getAlpha(alpha, 255, a, b); + + buf[PX(0)] = (unsigned char)((float)red * a + (float)buf[PX(0)] * b); + buf[PX(0)] /= (a + b); + buf[PX(1)] = (unsigned char)((float)green * a + (float)buf[PX(1)] * b); + buf[PX(1)] /= (a + b); + buf[PX(2)] = (unsigned char)((float)blue * a + (float)buf[PX(2)] * b); + buf[PX(2)] /= (a + b); + */ + unsigned int a = alpha; + unsigned int b = 255 - alpha; + + buf[PX(0)] = (unsigned char)(((int)red * a + (int)buf[PX(0)] * b) / 255); + buf[PX(1)] = (unsigned char)(((int)green * a + (int)buf[PX(1)] * b) / 255); + buf[PX(2)] = (unsigned char)(((int)blue * a + (int)buf[PX(2)] * b) / 255); + +} + +static int idx = 0; +GUI::PixelBufferAlpha::PixelBufferAlpha(size_t width, size_t height) +{ + this->idx = ::idx++; + buf = NULL; + x = y = 10; + realloc(width, height); +} + +GUI::PixelBufferAlpha::~PixelBufferAlpha() +{ + if(buf) free(buf); +} + +void GUI::PixelBufferAlpha::realloc(size_t width, size_t height) +{ + if(buf) free(buf); + buf = (unsigned char *)calloc(width * height, 4); + this->width = width; + this->height = height; +} + +#undef PX +#define PX(k) (x + y * width) * 4 + k +void GUI::PixelBufferAlpha::setPixel(size_t x, size_t y, + unsigned char red, + unsigned char green, + unsigned char blue, + unsigned char alpha) +{ + if(x >= width || y >= height) return; + + buf[PX(0)] = red; + buf[PX(1)] = green; + buf[PX(2)] = blue; + buf[PX(3)] = alpha; +} + +// http://en.wikipedia.org/wiki/Alpha_compositing +static void getAlpha(unsigned char _a, unsigned char _b, float &a, float &b) +{ + a = _a / 255.0; + b = _b / 255.0; + b *= (1-a); +} + +void GUI::PixelBufferAlpha::addPixel(size_t x, size_t y, + unsigned char red, + unsigned char green, + unsigned char blue, + unsigned char alpha) +{ + if(x >= width || y >= height) return; + + if(alpha == 0) return; + + float a,b; + getAlpha(alpha, buf[PX(3)], a, b); + + buf[PX(0)] = (unsigned char)((float)red * a + (float)buf[PX(0)] * b); + buf[PX(0)] /= (a + b); + buf[PX(1)] = (unsigned char)((float)green * a + (float)buf[PX(1)] * b); + buf[PX(1)] /= (a + b); + buf[PX(2)] = (unsigned char)((float)blue * a + (float)buf[PX(2)] * b); + buf[PX(2)] /= (a + b); + + buf[PX(3)] = (a + b) * 255; +} + +void GUI::PixelBufferAlpha::addPixel(size_t x, size_t y, GUI::Colour c) +{ + addPixel(x, y, c.red * 255, c.green * 255, c.blue * 255, c.alpha * 255); +} + +void GUI::PixelBufferAlpha::pixel(size_t x, size_t y, + unsigned char *red, + unsigned char *green, + unsigned char *blue, + unsigned char *alpha) +{ + if(x >= width || y >= height) return; + *red = buf[PX(0)]; + *green = buf[PX(1)]; + *blue = buf[PX(2)]; + *alpha = buf[PX(3)]; +} + +#ifdef TEST_PIXELBUFFER +//Additional dependency files +//deps: +//Required cflags (autoconf vars may be used) +//cflags: +//Required link options (autoconf vars may be used) +//libs: +#include "test.h" + +TEST_BEGIN; + +// TODO: Put some testcode here (see test.h for usable macros). + +TEST_END; + +#endif/*TEST_PIXELBUFFER*/ diff --git a/plugingui/pixelbuffer.h b/plugingui/pixelbuffer.h new file mode 100644 index 0000000..2785eb1 --- /dev/null +++ b/plugingui/pixelbuffer.h @@ -0,0 +1,91 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * pixelbuffer.h + * + * Thu Nov 10 09:00:37 CET 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#ifndef __DRUMGIZMO_PIXELBUFFER_H__ +#define __DRUMGIZMO_PIXELBUFFER_H__ + +#include + +#include "colour.h" + +namespace GUI { + +class PixelBuffer { +public: + PixelBuffer(size_t width, size_t height); + ~PixelBuffer(); + + void realloc(size_t width, size_t height); + + void setPixel(size_t x, size_t y, + unsigned char red, + unsigned char green, + unsigned char blue, + unsigned char alpha); + + unsigned char *buf; + size_t width; + size_t height; +}; + +class PixelBufferAlpha { +public: + PixelBufferAlpha(size_t width, size_t height); + ~PixelBufferAlpha(); + + int idx; + size_t x, y; + + void realloc(size_t width, size_t height); + + void setPixel(size_t x, size_t y, + unsigned char red, + unsigned char green, + unsigned char blue, + unsigned char alpha); + + void addPixel(size_t x, size_t y, + unsigned char red, + unsigned char green, + unsigned char blue, + unsigned char alpha); + + void addPixel(size_t x, size_t y, Colour c); + + void pixel(size_t x, size_t y, + unsigned char *red, + unsigned char *green, + unsigned char *blue, + unsigned char *alpha); + + unsigned char *buf; + size_t width; + size_t height; +}; + +}; + +#endif/*__DRUMGIZMO_PIXELBUFFER_H__*/ diff --git a/plugingui/pluginconfig.cc b/plugingui/pluginconfig.cc new file mode 100644 index 0000000..d4c4477 --- /dev/null +++ b/plugingui/pluginconfig.cc @@ -0,0 +1,63 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * config.cc + * + * Tue Jun 3 13:54:05 CEST 2014 + * Copyright 2014 Jonas Suhr Christensen + * jsc@umbraculum.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "pluginconfig.h" + +#include + +#define CONFIGFILENAME "plugingui.conf" + +Config::Config() + : ConfigFile(CONFIGFILENAME) +{ +} + +Config::~Config() +{ +} + +bool Config::load() +{ + lastkit.clear(); + lastmidimap.clear(); + + if(!ConfigFile::load()) { + return false; + } + + lastkit = getValue("lastkit"); + lastmidimap = getValue("lastmidimap"); + + return true; +} + +bool Config::save() +{ + setValue("lastkit", lastkit); + setValue("lastmidimap", lastmidimap); + + return ConfigFile::save(); +} diff --git a/plugingui/pluginconfig.h b/plugingui/pluginconfig.h new file mode 100644 index 0000000..9bef1f0 --- /dev/null +++ b/plugingui/pluginconfig.h @@ -0,0 +1,44 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * config.h + * + * Tue Jun 3 13:51:29 CEST 2014 + * Copyright 2014 Jonas Suhr Christensen + * jsc@umbraculum.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#ifndef __DRUMGIZMO_CONFIG_H__ +#define __DRUMGIZMO_CONFIG_H__ + +#include + +class Config : public ConfigFile { +public: + Config(); + ~Config(); + + bool load(); + bool save(); + + std::string lastkit; + std::string lastmidimap; +}; + +#endif/*__DRUMGIZMO_CONFIG_H__*/ diff --git a/plugingui/plugingui.cc b/plugingui/plugingui.cc new file mode 100644 index 0000000..262b34b --- /dev/null +++ b/plugingui/plugingui.cc @@ -0,0 +1,539 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * plugingui.cc + * + * Mon Oct 3 13:40:49 CEST 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "plugingui.h" + +#include +#include + +#include "knob.h" +#include "verticalline.h" +#include "../version.h" + +#include "pluginconfig.h" +#include "messagehandler.h" + +namespace GUI { + +FileBrowser *fb; +static void selectKitFile(void *ptr, std::string filename) +{ + PluginGUI *gui = (PluginGUI*)ptr; + + gui->lineedit->setText(filename); + + fb->hide(); + + std::string drumkit = gui->lineedit->text(); + + gui->config->lastkit = drumkit; + gui->config->save(); + + gui->progress->setProgress(0); + gui->progress->setState(ProgressBar::blue); + + LoadDrumKitMessage *msg = new LoadDrumKitMessage(); + msg->drumkitfile = drumkit; + + msghandler.sendMessage(MSGRCV_ENGINE, msg); +} + +static void kitBrowseClick(void *ptr) +{ + PluginGUI *gui = (PluginGUI*)ptr; + + std::string path = gui->lineedit->text(); + if(path == "") path = gui->config->lastkit; + if(path == "") path = gui->lineedit2->text(); + + fb->setPath(path); + fb->registerFileSelectHandler(selectKitFile, gui); + fb->show(); +} + +static void selectMapFile(void *ptr, std::string filename) +{ + PluginGUI *gui = (PluginGUI*)ptr; + + gui->lineedit2->setText(filename); + fb->hide(); + + std::string midimap = gui->lineedit2->text(); + + gui->config->lastmidimap = midimap; + gui->config->save(); + + LoadMidimapMessage *msg = new LoadMidimapMessage(); + msg->midimapfile = midimap; + msghandler.sendMessage(MSGRCV_ENGINE, msg); + + /* + if(gui->changeMidimapHandler) + gui->changeMidimapHandler(gui->changeMidimapPtr, midimap.c_str()); + gui->progress2->setState(ProgressBar::green); + */ +} + +static void midimapBrowseClick(void *ptr) +{ + PluginGUI *gui = (PluginGUI*)ptr; + + std::string path = gui->lineedit2->text(); + if(path == "") path = gui->config->lastmidimap; + if(path == "") path = gui->lineedit->text(); + + fb->setPath(path); + fb->registerFileSelectHandler(selectMapFile, gui); + fb->show(); +} + +/* +void closeClick(void *ptr) +{ + PluginGUI *gui = (PluginGUI*)ptr; + if(gui->windowClosedHandler) gui->windowClosedHandler(gui->windowClosedPtr); +} +*/ + +PluginGUI::PluginGUI() + : MessageReceiver(MSGRCV_UI) + , initialised(false) + , sem("plugingui") +{ + windowClosedHandler = NULL; + changeMidimapHandler = NULL; + + window = NULL; + + running = true; + closing = false; + +#ifdef USE_THREAD + run(); +#else + init(); +#endif/*USE_THREAD*/ + + sem.wait(); +} + +PluginGUI::~PluginGUI() +{ + stopThread(); +} + +void PluginGUI::stopThread() +{ + if(running) { + running = false; + wait_stop(); + } +} + + +void PluginGUI::handleMessage(Message *msg) +{ + Painter p(window);// Make sure we only redraw buffer one time. + + switch(msg->type()) { + case Message::LoadStatus: + { + LoadStatusMessage *ls = (LoadStatusMessage*)msg; + progress->setProgress((float)ls->numer_of_files_loaded / + (float)ls->number_of_files); + if(ls->numer_of_files_loaded == ls->number_of_files) { + progress->setState(ProgressBar::green); + } + } + break; + case Message::LoadStatusMidimap: + { + LoadStatusMessageMidimap *ls = (LoadStatusMessageMidimap*)msg; + progress2->setProgress(1); + if(ls->success) { + progress2->setState(ProgressBar::green); + } else { + progress2->setState(ProgressBar::red); + } + } + break; + case Message::EngineSettingsMessage: + { + EngineSettingsMessage *settings = (EngineSettingsMessage *)msg; + lineedit->setText(settings->drumkitfile); + if(settings->drumkit_loaded) { + progress->setProgress(1); + progress->setState(ProgressBar::green); + } else { + progress->setProgress(0); + progress->setState(ProgressBar::blue); + } + lineedit2->setText(settings->midimapfile); + if(settings->midimap_loaded) { + progress2->setProgress(1); + progress2->setState(ProgressBar::green); + } else { + progress2->setProgress(0); + progress2->setState(ProgressBar::blue); + } + velocityCheck->setChecked(settings->enable_velocity_modifier); + attackKnob->setValue(settings->velocity_modifier_weight); + falloffKnob->setValue(settings->velocity_modifier_falloff); + + } + default: + break; + } +} + +void PluginGUI::thread_main() +{ + init(); + + { // Request all engine settings + EngineSettingsMessage *msg = new EngineSettingsMessage(); + msghandler.sendMessage(MSGRCV_ENGINE, msg); + } + + while(running) { +#ifdef WIN32 + SleepEx(50, FALSE); +#else + usleep(50000); +#endif/*WIN32*/ + + // DEBUG(gui, "loop"); + + window->eventHandler()->processEvents(); + handleMessages(); + } + + deinit(); +} + +void PluginGUI::deinit() +{ + if(config) { + config->save(); + delete config; + } + if(window) delete window; +} + +void closeEventHandler(void *ptr) +{ + volatile bool *closing = (volatile bool*)ptr; + *closing = true; +} + +void PluginGUI::init() +{ + DEBUG(gui, "init"); + + config = new Config(); + config->load(); + + window = new Window(); + window->eventHandler()->registerCloseHandler(closeEventHandler, + (void*)&closing); + + window->setFixedSize(370, 330); + window->setCaption("DrumGizmo v" VERSION); + + Label *lbl_title = new Label(window); + lbl_title->setText("DrumGizmo"); + lbl_title->move(127, 7); + lbl_title->resize(200, 20); + + VerticalLine *l1 = new VerticalLine(window); + l1->move(20, 30); + l1->resize(window->width() - 40, 2); + +#define OFFSET1 17 +#define OFFSET2 38 +#define OFFSET3 20 + +#define XOFFSET 20 + // Drumkit file + { + int y = 37; + Label *lbl = new Label(window); + lbl->setText("Drumkit file:"); + lbl->move(XOFFSET - 4, y); + lbl->resize(100, 20); + + y += OFFSET1; + lineedit = new LineEdit(window); + lineedit->move(XOFFSET, y); + lineedit->resize(243, 29); + lineedit->setReadOnly(true); + + Button *btn_brw = new Button(window); + btn_brw->setText("Browse..."); + btn_brw->move(266, y - 6 + 4); + btn_brw->resize(85, 35 + 6 - 4); + btn_brw->registerClickHandler(kitBrowseClick, this); + + y += OFFSET2; + progress = new ProgressBar(window); + progress->move(XOFFSET, y); + progress->resize(window->width() - 2*XOFFSET, 11); + + y += OFFSET3; + VerticalLine *l = new VerticalLine(window); + l->move(XOFFSET, y); + l->resize(window->width() - 2*XOFFSET, 2); + } + + // Midimap file + { + int y = 120; + lbl2 = new Label(window); + lbl2->setText("Midimap file:"); + lbl2->move(XOFFSET - 4, y); + lbl2->resize(100, 20); + + y += OFFSET1; + lineedit2 = new LineEdit(window); + lineedit2->move(XOFFSET, y); + lineedit2->resize(243, 29); + lineedit2->setReadOnly(true); + + Button *btn_brw = new Button(window); + btn_brw->setText("Browse..."); + btn_brw->move(266, y - 6 + 4); + btn_brw->resize(85, 35 + 6 - 4); + btn_brw->registerClickHandler(midimapBrowseClick, this); + + y += OFFSET2; + progress2 = new ProgressBar(window); + progress2->move(XOFFSET, y); + progress2->resize(window->width() - 2*XOFFSET, 11); + + y += OFFSET3; + VerticalLine *l = new VerticalLine(window); + l->move(XOFFSET, y); + l->resize(window->width() - 2*XOFFSET, 2); + } + + { + int y = 203; +#define OFFSET4 21 + + // Enable Velocity + Label *lbl_velocity = new Label(window); + lbl_velocity->resize(78 ,20); + lbl_velocity->move(16, y); + lbl_velocity->setText("Humanizer"); + + velocityCheck = new CheckBox(window); + //velocityCheck->setText("Enable Velocity Modifier"); + velocityCheck->move(26, y + OFFSET4); + velocityCheck->resize(59,38); + obj_connect(velocityCheck, stateChangedNotifier, + this, PluginGUI::velocityCheckClick); + + // Velocity Weight Modifier: + { + Label *lbl_weight = new Label(window); + lbl_weight->setText("Attack"); + lbl_weight->move(107, y); + lbl_weight->resize(100, 20); + + attackKnob = new Knob(window); + attackKnob->move(109, y + OFFSET4 - 4); + attackKnob->resize(57, 57); + obj_connect(attackKnob, valueChangedNotifier, + this, PluginGUI::attackValueChanged); + } + + // Velocity Falloff Modifier: + { + Label *lbl_falloff = new Label(window); + lbl_falloff->setText("Release"); + lbl_falloff->move(202 - 17 - 7, y); + lbl_falloff->resize(100, 20); + + falloffKnob = new Knob(window); + falloffKnob->move(202 - 13 - 5, y + OFFSET4 - 4); + falloffKnob->resize(57, 57); + obj_connect(falloffKnob, valueChangedNotifier, + this, PluginGUI::falloffValueChanged); } + } + + VerticalLine *l2 = new VerticalLine(window); + l2->move(20, 310 - 15 - 9); + l2->resize(window->width() - 40, 2); + + Label *lbl_version = new Label(window); + lbl_version->setText(".::. v" VERSION " .::. http://www.drumgizmo.org .::. GPLv3 .::."); + lbl_version->move(16, 300); + lbl_version->resize(window->width(), 20); + /* + { + ComboBox *cmb = new ComboBox(window); + cmb->addItem("Foo", "Bar"); + cmb->addItem("Hello", "World"); + cmb->move(10,10); + cmb->resize(70, 30); + } + */ + // Create filebrowser + filebrowser = new FileBrowser(window); + filebrowser->move(0, 0); + filebrowser->resize(window->width() - 1, window->height() - 1); + filebrowser->hide(); + fb = filebrowser; + + // Enable quit button +// Button *btn_quit = new Button(window); +// btn_quit->setText("Quit"); +// btn_quit->move(50,280); +// btn_quit->resize(80,80); +// btn_quit->registerClickHandler(quit, this); + + window->show(); + + sem.post(); + + initialised = true; +} + +void PluginGUI::show() +{ + while(!initialised) usleep(10000); + + if(!window) init(); + + window->show(); +} + +void PluginGUI::hide() +{ + while(!initialised) usleep(10000); + + if(window) window->hide(); +} + +void PluginGUI::processEvents() +{ + if(!initialised) return; + + if(closing) { + if(windowClosedHandler) windowClosedHandler(windowClosedPtr); + closing = false; + } + +#ifndef USE_THREAD + window->eventHandler()->processEvents(window); +#endif/*USE_THREAD*/ +} + +void PluginGUI::setWindowClosedCallback(void (*handler)(void *), void *ptr) +{ + windowClosedHandler = handler; + windowClosedPtr = ptr; +} + +void PluginGUI::attackValueChanged(float value) +{ + ChangeSettingMessage *msg = + new ChangeSettingMessage(ChangeSettingMessage::velocity_modifier_weight, + value); + + msghandler.sendMessage(MSGRCV_ENGINE, msg); + +#ifdef STANDALONE + int i = value * 4; + switch(i) { + case 0: progress->setState(ProgressBar::off); break; + case 1: progress->setState(ProgressBar::blue); break; + case 2: progress->setState(ProgressBar::green); break; + case 3: progress->setState(ProgressBar::red); break; + default: break; + } +#endif +} + +void PluginGUI::falloffValueChanged(float value) +{ + ChangeSettingMessage *msg = + new ChangeSettingMessage(ChangeSettingMessage::velocity_modifier_falloff, + value); + msghandler.sendMessage(MSGRCV_ENGINE, msg); + +#ifdef STANDALONE + progress->setProgress(value); +#endif +} + +void PluginGUI::velocityCheckClick(bool checked) +{ + ChangeSettingMessage *msg = + new ChangeSettingMessage(ChangeSettingMessage::enable_velocity_modifier, + checked); + msghandler.sendMessage(MSGRCV_ENGINE, msg); +} + +} // GUI:: + +#ifdef STANDALONE + +class Engine : public MessageHandler { +public: + void handleMessage(Message *msg) {} +}; + +void stop(void *ptr) +{ + DEBUG(stop, "Stopping...\n"); + bool *running = (bool*)ptr; + *running = false; +} + +int main() +{ + INFO(example, "We are up and running"); + + bool running = true; + + GUI::PluginGUI gui; + gui.setWindowClosedCallback(stop, &running); + + // gui.show(); + + while(running) { +#ifdef WIN32 + SleepEx(1000, FALSE); +#else + sleep(1); +#endif + } + + return 0; +} + +#endif/*STANDALONE*/ diff --git a/plugingui/plugingui.h b/plugingui/plugingui.h new file mode 100644 index 0000000..dfcbcb8 --- /dev/null +++ b/plugingui/plugingui.h @@ -0,0 +1,107 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * plugingui.h + * + * Mon Oct 3 13:40:49 CEST 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#pragma once + +#include "window.h" +#include "eventhandler.h" + +#include "label.h" +#include "lineedit.h" +#include "checkbox.h" +#include "button.h" +#include "knob.h" +#include "progressbar.h" +#include "pluginconfig.h" + +#include "filebrowser.h" + +#include "thread.h" +#include "semaphore.h" + +#include "messagereceiver.h" +#include "notifier.h" + +namespace GUI { + +class PluginGUI : public Thread, public MessageReceiver, public Listener { +public: + PluginGUI(); + virtual ~PluginGUI(); + + void thread_main(); + void stopThread(); + + void init(); + void deinit(); + + void show(); + void hide(); + void processEvents(); + void setWindowClosedCallback(void (*handler)(void *), void *ptr); + + void handleMessage(Message *msg); + + Window *window; + EventHandler *eventhandler; + + FileBrowser *filebrowser; + + Label *lbl; + LineEdit *lineedit; + ProgressBar *progress; + + Label *lbl2; + LineEdit *lineedit2; + ProgressBar *progress2; + + Config *config; + + void (*windowClosedHandler)(void *); + void *windowClosedPtr; + + void (*changeMidimapHandler)(void *, const char *); + void *changeMidimapPtr; + +private: + void attackValueChanged(float value); + void falloffValueChanged(float value); + void velocityCheckClick(bool checked); + + // Humanized velocity controls: + CheckBox *velocityCheck; + Knob *attackKnob; + Knob *falloffKnob; + + volatile bool running; + volatile bool closing; + volatile bool initialised; + + Semaphore sem; +}; + +} // GUI:: + diff --git a/plugingui/progressbar.cc b/plugingui/progressbar.cc new file mode 100644 index 0000000..3b821bb --- /dev/null +++ b/plugingui/progressbar.cc @@ -0,0 +1,108 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * progressbar.cc + * + * Fri Mar 22 22:07:57 CET 2013 + * Copyright 2013 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "progressbar.h" + +#include "painter.h" + +GUI::ProgressBar::ProgressBar(GUI::Widget *parent) : GUI::Widget(parent) +{ + bar_bg.left = new Image(":progress_back_l.png"); + bar_bg.right = new Image(":progress_back_r.png"); + bar_bg.center = new Image(":progress_back_c.png"); + + bar_blue.left = new Image(":progress_front_blue_l.png"); + bar_blue.right = new Image(":progress_front_blue_r.png"); + bar_blue.center = new Image(":progress_front_blue_c.png"); + + bar_red.left = new Image(":progress_front_red_l.png"); + bar_red.right = new Image(":progress_front_red_r.png"); + bar_red.center = new Image(":progress_front_red_c.png"); + + bar_green.left = new Image(":progress_front_green_l.png"); + bar_green.right = new Image(":progress_front_green_r.png"); + bar_green.center = new Image(":progress_front_green_c.png"); + + state = blue; + _progress = .5; +} + +void GUI::ProgressBar::setState(GUI::ProgressBar::state_t state) +{ + if(this->state != state) { + this->state = state; + repaintEvent(NULL); + } +} + +float GUI::ProgressBar::progress() +{ + return _progress; +} + +void GUI::ProgressBar::setProgress(float progress) +{ + _progress = progress; + repaintEvent(NULL); +} + +void GUI::ProgressBar::repaintEvent(GUI::RepaintEvent *e) +{ + Painter p(this); + + int max = width() * _progress; + + p.clear(); + + int brd = 4; + p.drawBar(0, 0, &bar_bg, width(), height()); + + GUI::Painter::Bar *b = NULL; + switch(state) { + case red: b = &bar_red; break; + case green: b = &bar_green; break; + case blue: b = &bar_blue; break; + default: break; + } + if(b) p.drawBar(brd, 0, b, max - 2*brd, height()); +} + +#ifdef TEST_PROGRESSBAR +//Additional dependency files +//deps: +//Required cflags (autoconf vars may be used) +//cflags: +//Required link options (autoconf vars may be used) +//libs: +#include "test.h" + +TEST_BEGIN; + +// TODO: Put some testcode here (see test.h for usable macros). + +TEST_END; + +#endif/*TEST_PROGRESSBAR*/ diff --git a/plugingui/progressbar.h b/plugingui/progressbar.h new file mode 100644 index 0000000..9d08a9e --- /dev/null +++ b/plugingui/progressbar.h @@ -0,0 +1,71 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * progressbar.h + * + * Fri Mar 22 22:07:57 CET 2013 + * Copyright 2013 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#ifndef __DRUMGIZMO_PROGRESSBAR_H__ +#define __DRUMGIZMO_PROGRESSBAR_H__ + +#include "widget.h" + +#include + +#include "guievent.h" +#include "painter.h" + +namespace GUI { + +class ProgressBar : public Widget { +public: + ProgressBar(Widget *parent); + + float progress(); + void setProgress(float progress); + + typedef enum { + red, + green, + blue, + off + } state_t; + void setState(state_t state); + + //protected: + virtual void repaintEvent(RepaintEvent *e); + +private: + state_t state; + + Painter::Bar bar_bg; + + Painter::Bar bar_green; + Painter::Bar bar_blue; + Painter::Bar bar_red; + + float _progress; +}; + +}; + +#endif/*__DRUMGIZMO_PROGRESSBAR_H__*/ diff --git a/plugingui/rcgen.cc b/plugingui/rcgen.cc new file mode 100644 index 0000000..5cb0999 --- /dev/null +++ b/plugingui/rcgen.cc @@ -0,0 +1,71 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * rcgen.cc + * + * Sun Mar 17 20:27:17 CET 2013 + * Copyright 2013 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include +#include + +int main(int argc, char *argv[]) +{ + printf("/* This file is autogenerated by rcgen. Do not modify! */\n"); + printf("#include \"resource_data.h\"\n"); + printf("\n"); + printf("const rc_data_t rc_data[] =\n"); + printf("{\n"); + + int i = 1; + while(i < argc) { + printf(" { \":%s\", ", argv[i]); + + std::string data; + FILE *fp = fopen(argv[i], "r"); + if(!fp) { + fprintf(stderr, "Could not read file '%s' - quitting\n", argv[i]); + return 1; + } + + char buf[32]; + while(!feof(fp)) { + size_t sz = fread(buf, 1, sizeof(buf), fp); + data.append(buf, sz); + } + fclose(fp); + + printf("%d,\n \"", (int)data.length()); + for(size_t j = 0; j < data.length(); j++) { + if(j != 0 && j % 16 == 0) printf("\"\n \""); + printf("\\%o", (unsigned char)data[j]); + } + + printf("\" },\n"); + + i++; + } + +printf(" { \"\", 0, 0 }\n"); +printf("};\n"); + + return 0; +} diff --git a/plugingui/resource.cc b/plugingui/resource.cc new file mode 100644 index 0000000..80bd51e --- /dev/null +++ b/plugingui/resource.cc @@ -0,0 +1,119 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * resource.cc + * + * Sun Mar 17 19:38:04 CET 2013 + * Copyright 2013 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "resource.h" + +#include +#include +#include "resource_data.h" + +GUI::Resource::Resource(std::string name) +{ + is_valid = false; + is_internal = false; + + if(name.length() == 0) return; + if(name[0] == ':') { + i_data = NULL; + i_size = 0; + + // Use internal resource: + const rc_data_t *p = rc_data; + while(p->name[0] == ':') { + if(std::string(p->name) == name) { + i_data = p->data; + i_size = p->size; + break; + } + p++; + } + + // We did not find the named resource. + if(i_data == NULL) { + ERR(rc, "Could not find '%s'\n", name.c_str()); + return; + } + + is_internal = true; + } else { + // Read from file: + FILE *fp = fopen(name.c_str(), "r"); + if(!fp) return; + char buf[32]; + while(!feof(fp)) { + size_t sz = fread(buf, 1, sizeof(buf), fp); + e_data.append(buf, sz); + } + fclose(fp); + is_internal = false; + } + + is_valid = true; +} + +const char *GUI::Resource::data() +{ + if(is_valid == false) return NULL; + if(is_internal) { + return i_data; + } else { + return e_data.data(); + } + return NULL; +} + +size_t GUI::Resource::size() +{ + if(is_valid == false) return 0; + if(is_internal) { + return i_size; + } else { + return e_data.length(); + } + return 0; +} + +bool GUI::Resource::valid() +{ + return is_valid; +} + +#ifdef TEST_RESOURCE +//Additional dependency files +//deps: +//Required cflags (autoconf vars may be used) +//cflags: +//Required link options (autoconf vars may be used) +//libs: +#include "test.h" + +TEST_BEGIN; + +// TODO: Put some testcode here (see test.h for usable macros). + +TEST_END; + +#endif/*TEST_RESOURCE*/ diff --git a/plugingui/resource.h b/plugingui/resource.h new file mode 100644 index 0000000..4b494f7 --- /dev/null +++ b/plugingui/resource.h @@ -0,0 +1,53 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * resource.h + * + * Sun Mar 17 19:38:03 CET 2013 + * Copyright 2013 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#ifndef __DRUMGIZMO_RESOURCE_H__ +#define __DRUMGIZMO_RESOURCE_H__ + +#include + +namespace GUI { + +class Resource { +public: + Resource(std::string name); + + const char *data(); + size_t size(); + + bool valid(); + +private: + std::string e_data; + bool is_valid; + bool is_internal; + const char *i_data; + size_t i_size; +}; + +}; + +#endif/*__DRUMGIZMO_RESOURCE_H__*/ diff --git a/plugingui/resource_data.cc b/plugingui/resource_data.cc new file mode 100644 index 0000000..ce29fd8 --- /dev/null +++ b/plugingui/resource_data.cc @@ -0,0 +1,3583 @@ +/* This file is autogenerated by rcgen. Do not modify! */ +#include "resource_data.h" + +const rc_data_t rc_data[] = +{ + { ":bg.png", 1123, + "\211\120\116\107\15\12\32\12\0\0\0\15\111\110\104\122" + "\0\0\1\162\0\0\1\112\10\6\0\0\0\0\15\324" + "\311\0\0\0\6\142\113\107\104\0\377\0\377\0\377\240" + "\275\247\223\0\0\0\11\160\110\131\163\0\0\15\327\0" + "\0\15\327\1\102\50\233\170\0\0\0\7\164\111\115\105" + "\7\335\4\6\13\15\70\43\146\165\177\0\0\3\360\111" + "\104\101\124\170\332\355\334\261\15\200\60\20\4\101\100\364" + "\137\240\233\61\65\134\162\74\142\246\4\7\253\13\136\76" + "\327\132\373\0\340\263\56\117\0\40\344\0\10\71\0\102" + "\16\40\344\0\174\321\275\267\243\25\0\213\34\0\41\7" + "\100\310\1\204\34\0\41\7\240\314\325\12\200\105\16\200" + "\220\3\40\344\0\102\16\200\220\3\40\344\0\10\71\200" + "\220\3\40\344\0\10\71\0\102\16\40\344\0\214\347\323" + "\54\0\213\34\0\41\7\100\310\1\204\34\0\41\7\100" + "\310\1\10\71\77\4\260\310\1\20\162\0\204\34\100\310" + "\1\20\162\0\372\134\255\0\130\344\0\10\71\0\102\16" + "\40\344\0\10\71\0\175\256\126\0\54\162\0\204\34\0" + "\41\7\20\162\0\204\34\0\41\7\40\344\374\20\300\42" + "\7\100\310\1\20\162\0\41\7\100\310\1\350\163\265\2" + "\140\221\3\40\344\0\10\71\200\220\3\40\344\0\10\71" + "\0\102\16\40\344\0\10\71\0\102\16\200\220\3\10\71" + "\0\343\371\64\13\300\42\7\100\310\1\20\162\0\41\7" + "\100\310\1\20\162\0\102\316\17\1\54\162\0\204\34\0" + "\41\7\20\162\0\204\34\200\76\127\53\0\26\71\0\102" + "\16\200\220\3\10\71\0\102\16\200\220\3\20\162\176\10" + "\140\221\3\40\344\0\10\71\200\220\3\40\344\0\364\271" + "\132\1\260\310\1\20\162\0\204\34\100\310\1\20\162\0" + "\372\134\255\0\130\344\0\10\71\0\102\16\40\344\0\10" + "\71\0\102\16\200\220\3\10\71\0\102\16\200\220\3\40" + "\344\0\102\16\300\170\76\315\2\260\310\1\20\162\0\204" + "\34\100\310\1\20\162\0\204\34\200\220\363\103\0\213\34" + "\0\41\7\100\310\1\204\34\0\41\7\240\317\325\12\200" + "\105\16\200\220\3\40\344\0\102\16\200\220\3\40\344\0" + "\204\234\37\2\130\344\0\10\71\0\102\16\40\344\0\10" + "\71\0\175\256\126\0\54\162\0\204\34\0\41\7\20\162" + "\0\204\34\200\76\127\53\0\26\71\0\102\16\200\220\3" + "\10\71\0\102\16\200\220\3\40\344\0\102\16\200\220\3" + "\40\344\0\10\71\200\220\3\60\236\117\263\0\54\162\0" + "\204\34\0\41\7\20\162\0\204\34\0\41\7\40\344\374" + "\20\300\42\7\100\310\1\20\162\0\41\7\100\310\1\350" + "\163\265\2\140\221\3\40\344\0\10\71\200\220\3\40\344" + "\0\10\71\0\41\347\207\0\26\71\0\102\16\200\220\3" + "\10\71\0\102\16\100\237\253\25\0\213\34\0\41\7\100" + "\310\1\204\34\0\41\7\100\310\1\10\71\77\4\260\310" + "\1\20\162\0\204\34\100\310\1\20\162\0\204\34\0\41" + "\7\20\162\0\204\34\0\41\7\100\310\1\376\300\137\53" + "\0\26\71\0\102\16\200\220\3\10\71\0\102\16\200\220" + "\3\20\162\176\10\140\221\3\40\344\0\10\71\200\220\3" + "\40\344\0\364\271\132\1\260\310\1\20\162\0\204\34\100" + "\310\1\20\162\0\204\34\200\220\363\103\0\213\34\0\41" + "\7\100\310\1\204\34\0\41\7\240\317\325\12\200\105\16" + "\200\220\3\40\344\0\102\16\200\220\3\40\344\0\204\234" + "\37\2\130\344\0\10\71\0\102\16\40\344\0\10\71\0" + "\102\16\200\220\3\10\71\0\102\16\200\220\3\40\344\0" + "\177\340\257\25\0\213\34\0\41\7\100\310\1\204\34\0" + "\41\7\100\310\1\10\71\77\4\260\310\1\20\162\0\204" + "\34\100\310\1\20\162\0\372\134\255\0\130\344\0\10\71" + "\0\102\16\40\344\0\10\71\0\102\16\100\310\371\41\200" + "\105\16\200\220\3\40\344\0\102\16\200\220\3\320\347\152" + "\5\300\42\7\100\310\1\20\162\0\41\7\100\310\1\20" + "\162\0\102\316\17\1\54\162\0\204\34\0\41\7\20\162" + "\0\204\34\200\76\127\53\0\26\71\0\102\16\200\220\3" + "\10\71\0\102\16\200\220\3\40\344\0\102\16\200\220\3" + "\40\344\0\10\71\200\220\3\60\236\117\263\0\54\162\0" + "\204\34\0\41\7\20\162\0\204\34\200\76\127\53\0\26" + "\71\0\102\16\200\220\3\10\71\0\102\16\200\220\3\20" + "\162\176\10\140\221\3\40\344\0\10\71\200\220\3\40\344" + "\0\364\271\132\1\260\310\1\20\162\0\204\34\100\310\1" + "\20\162\0\204\34\200\220\363\103\0\213\34\200\67\75\173" + "\113\211\365\123\166\223\131\0\0\0\0\111\105\116\104\256" + "\102\140\202" }, + { ":font.png", 4945, + "\211\120\116\107\15\12\32\12\0\0\0\15\111\110\104\122" + "\0\0\3\40\0\0\0\15\10\6\0\0\0\121\252\12" + "\35\0\0\0\4\147\101\115\101\0\0\257\310\67\5\212" + "\351\0\0\0\31\164\105\130\164\123\157\146\164\167\141\162" + "\145\0\101\144\157\142\145\40\111\155\141\147\145\122\145\141" + "\144\171\161\311\145\74\0\0\22\343\111\104\101\124\170\332" + "\354\135\11\230\25\305\21\356\307\356\262\313\215\10\54\10" + "\22\271\24\166\225\313\5\42\304\3\101\24\121\324\150\4" + "\305\170\200\7\212\170\340\255\200\242\150\104\23\121\320\250" + "\11\340\201\312\41\342\155\124\40\12\30\14\106\274\242\202" + "\34\36\53\40\2\131\105\271\4\144\322\25\377\316\326\353" + "\327\75\323\63\357\140\141\137\357\127\337\316\233\352\153\372" + "\250\256\277\252\173\106\170\236\47\344\237\47\144\250\344\377" + "\23\256\265\173\316\301\65\276\137\274\144\312\144\327\267\110" + "\172\206\335\173\126\322\250\124\225\157\51\323\231\357\122\116" + "\62\165\254\114\174\227\266\116\307\70\115\327\170\116\145\375" + "\222\345\247\173\234\246\143\276\245\253\177\322\361\54\225\241" + "\34\153\77\322\372\153\240\335\75\276\135\345\165\12\373\140" + "\244\244\31\222\142\352\236\255\75\14\353\164\74\217\351\64" + "\41\353\343\205\154\317\223\45\175\35\62\235\27\145\176\373" + "\76\157\242\376\42\52\202\334\214\312\217\322\167\231\232\347" + "\311\310\321\124\360\302\346\141\224\57\152\156\125\200\377\42" + "\13\100\234\1\310\321\20\66\104\75\130\37\367\226\264\134" + "\122\325\44\7\262\111\340\204\55\223\327\167\137\111\33\44" + "\355\307\356\65\305\275\272\216\345\247\13\200\164\222\264\214" + "\335\247\105\147\254\244\357\44\225\111\372\3\137\210\120\67" + "\317\122\307\343\44\315\225\264\125\322\32\111\23\361\354\212" + "\177\274\244\171\222\266\201\377\250\244\102\113\235\347\361\62" + "\14\145\173\6\76\205\366\222\136\223\264\111\322\152\111\203" + "\2\322\157\144\374\26\222\136\304\263\177\207\353\26\214\117" + "\175\365\230\244\377\110\132\17\120\131\221\1\310\31\222\76" + "\105\177\274\47\251\273\41\217\46\222\356\301\30\336\206\347" + "\172\136\122\257\200\162\227\251\161\143\131\200\25\375\210\61" + "\321\126\313\207\306\302\7\222\176\222\264\102\322\271\206\364" + "\73\320\207\323\45\165\160\30\13\136\320\130\141\345\123\176" + "\57\243\377\251\175\26\112\72\325\101\71\361\2\24\15\317" + "\47\217\42\364\107\117\107\45\346\2\3\273\217\241\214\105" + "\16\12\334\11\222\76\106\173\323\377\276\76\355\271\1\143" + "\240\171\100\36\47\6\344\361\222\244\326\132\234\106\222\36" + "\227\364\15\306\333\174\344\33\324\257\236\113\337\260\65\364" + "\102\214\33\133\40\336\205\54\277\56\214\127\25\262\57\217" + "\335\43\376\107\210\117\206\244\133\265\374\156\243\373\340\323" + "\170\357\247\361\351\367\234\240\147\144\365\327\177\323\134\353" + "\350\63\327\364\161\170\70\346\362\6\134\213\20\140\202\302" + "\165\220\13\345\153\163\305\6\40\53\45\165\13\251\4\173" + "\56\174\226\127\340\30\254\244\0\304\113\145\135\52\30\0" + "\271\10\72\337\16\113\377\376\54\151\255\244\241\311\324\237" + "\377\17\15\34\42\246\117\50\77\13\100\234\1\210\132\100" + "\111\250\377\33\374\134\111\237\350\202\337\60\20\110\1\250" + "\17\100\61\303\240\100\177\211\262\110\340\237\231\104\231\274" + "\276\127\112\372\213\241\116\223\45\135\312\356\75\2\140\242" + "\0\312\43\31\0\40\243\264\205\206\46\334\142\50\37\315" + "\161\175\276\43\110\172\35\12\122\115\111\15\45\75\4\45" + "\104\361\377\56\351\24\50\362\265\120\366\134\103\336\347\110" + "\372\207\5\200\370\75\377\201\222\112\45\15\224\264\217\244" + "\146\222\236\362\151\103\122\70\357\146\174\122\102\307\240\176" + "\104\167\340\36\357\237\251\0\115\205\120\142\316\253\300\0" + "\344\145\50\55\5\222\176\217\261\315\363\40\220\361\55\372" + "\237\200\133\165\111\15\44\15\220\264\104\322\237\54\345\166" + "\3\237\350\260\200\205\235\372\371\46\111\357\62\76\225\265" + "\16\126\113\32\53\55\265\261\256\322\223\2\330\112\322\15" + "\0\204\207\206\125\36\54\274\142\74\367\45\60\12\24\340" + "\231\146\245\21\200\164\7\310\353\22\102\211\371\227\244\34" + "\215\375\206\241\214\127\45\365\367\251\247\152\157\2\14\265" + "\241\360\323\357\166\226\272\220\174\274\123\322\2\207\74\72" + "\130\362\330\27\112\372\102\203\214\370\43\346\117\276\244\43" + "\61\116\115\143\333\13\251\70\362\305\265\0\106\216\3\14" + "\361\16\0\257\0\161\107\113\32\317\370\277\106\31\135\331" + "\275\11\244\224\43\176\143\214\237\103\300\73\4\277\33\201" + "\337\325\0\12\351\167\27\237\371\73\12\262\47\176\154\225" + "\77\317\70\170\46\254\12\40\373\375\73\50\115\307\300\100" + "\106\327\247\231\0\210\213\207\47\31\145\76\203\0\344\147" + "\145\50\313\172\100\262\0\44\205\274\157\1\340\253\130\372" + "\227\356\377\6\361\262\0\144\57\4\40\246\16\333\6\53" + "\125\76\254\227\24\206\141\161\363\33\114\55\241\330\12\50" + "\135\147\153\361\276\0\10\361\140\271\233\222\104\231\374\31" + "\346\40\137\275\116\175\141\255\347\136\221\151\110\73\15\326" + "\351\60\13\163\24\0\262\10\140\214\53\341\175\64\213\353" + "\133\21\275\64\265\340\211\260\361\111\371\334\254\361\11\70" + "\174\45\351\240\10\0\344\51\335\22\21\120\277\105\132\33" + "\157\106\235\125\250\255\325\157\3\200\225\12\205\232\222\26" + "\6\200\224\110\272\35\112\174\130\201\265\4\151\17\15\41" + "\140\133\3\234\51\336\1\120\40\17\267\144\121\23\12\160" + "\177\103\176\17\113\272\36\300\340\41\207\305\271\246\232\63" + "\340\23\360\37\22\122\61\240\362\236\113\21\0\41\340\170" + "\125\104\345\44\12\0\351\7\57\117\161\110\45\206\24\365" + "\263\30\213\344\305\203\206\62\16\206\301\244\252\245\36\323" + "\1\266\170\30\12\31\143\253\113\155\155\356\332\362\230\341" + "\223\7\315\245\55\332\163\155\302\170\160\31\263\136\22\175" + "\243\224\372\161\206\170\343\300\343\163\141\55\14\112\2\143" + "\203\274\74\303\231\241\211\370\315\130\336\203\41\77\250\315" + "\337\61\30\42\236\207\362\117\341\130\155\354\352\341\114\364" + "\105\314\7\200\364\224\364\117\7\0\162\45\144\370\376\54" + "\352\376\270\167\205\155\313\231\303\332\101\306\235\231\360\376" + "\156\4\130\257\257\171\154\256\205\42\106\161\356\247\266\141" + "\374\134\0\322\257\140\114\270\212\345\115\155\370\0\322\121" + "\73\137\243\201\111\122\362\106\140\175\56\203\341\256\206\217" + "\327\114\335\317\307\174\121\371\136\153\230\73\103\140\230\41" + "\371\364\66\346\122\130\17\10\311\341\125\222\56\267\30\120" + "\107\340\231\277\201\54\270\1\165\42\171\174\104\210\372\320" + "\363\334\213\147\131\213\353\174\55\175\102\37\4\265\263\226" + "\376\112\0\326\135\354\176\117\170\320\267\242\156\347\73\264" + "\275\27\140\40\150\17\257\125\214\361\143\270\327\236\345\161" + "\20\363\324\357\202\301\210\102\33\62\350\60\243\306\261\54" + "\237\243\110\317\3\157\75\14\52\202\31\265\326\71\172\311" + 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"\65\55\364\17\103\171\60\325\303\324\336\364\373\363\0\17" + "\310\133\111\344\121\17\363\147\221\366\134\363\340\155\150\225" + "\1\0\122\37\62\241\16\213\123\7\367\352\153\161\311\60" + "\165\74\256\147\101\161\175\206\1\277\371\206\72\316\1\50" + "\170\335\360\14\244\70\276\211\353\171\232\42\51\64\317\330" + "\33\360\330\10\37\0\102\62\372\173\313\72\342\351\236\6" + "\317\42\116\242\130\247\161\357\103\361\313\326\343\152\150\103" + "\362\10\375\125\3\40\263\261\146\65\301\365\315\214\177\23" + "\236\263\45\214\114\343\130\336\267\260\264\115\341\51\347\317" + "\64\34\155\335\34\151\247\50\357\154\200\25\236\306\337\53" + "\120\132\367\203\261\117\237\73\317\102\26\324\0\50\175\53" + "\44\0\121\236\300\223\174\326\201\7\0\350\7\103\307\230" + "\300\176\277\33\242\76\267\242\235\232\262\166\32\255\245\117" + "\350\203\240\166\326\322\77\307\224\174\165\177\15\166\13\344" + "\143\127\301\104\207\266\367\34\346\347\142\200\33\25\172\342" + 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+ * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#ifndef __DRUMGIZMO_RESOURCE_DATA_H__ +#define __DRUMGIZMO_RESOURCE_DATA_H__ + +typedef struct { + const char *name; + unsigned int size; + const char *data; +} rc_data_t; + +extern const rc_data_t rc_data[]; + +#endif/*__DRUMGIZMO_RESOURCE_DATA_H__*/ diff --git a/plugingui/resources/bg.png b/plugingui/resources/bg.png new file mode 100644 index 0000000..ed438d2 Binary files /dev/null and b/plugingui/resources/bg.png differ diff --git a/plugingui/resources/createrc.sh b/plugingui/resources/createrc.sh new file mode 100755 index 0000000..838713a --- /dev/null +++ b/plugingui/resources/createrc.sh @@ -0,0 +1,2 @@ +#!/bin/bash +../rcgen *.png png_error > ../resource_data.cc diff --git a/plugingui/resources/font.png 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a/plugingui/resources/widget_tl.png b/plugingui/resources/widget_tl.png new file mode 100644 index 0000000..8aee832 Binary files /dev/null and b/plugingui/resources/widget_tl.png differ diff --git a/plugingui/resources/widget_tr.png b/plugingui/resources/widget_tr.png new file mode 100644 index 0000000..1ea1f89 Binary files /dev/null and b/plugingui/resources/widget_tr.png differ diff --git a/plugingui/scrollbar.cc b/plugingui/scrollbar.cc new file mode 100644 index 0000000..07dc36b --- /dev/null +++ b/plugingui/scrollbar.cc @@ -0,0 +1,185 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * scrollbar.cc + * + * Sun Apr 14 12:54:58 CEST 2013 + * Copyright 2013 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "scrollbar.h" + +#include + +#include "painter.h" + +GUI::ScrollBar::ScrollBar(GUI::Widget *parent) + : GUI::Widget(parent), bg_img(":widget_c.png") +{ + handler = NULL; + ptr = NULL; +} + +void GUI::ScrollBar::setRange(int r) +{ + DEBUG(scroll, "%d\n", r); + ran = r; + setValue(value()); + repaintEvent(NULL); +} + +int GUI::ScrollBar::range() +{ + return ran; +} + +void GUI::ScrollBar::setMaximum(int m) +{ + DEBUG(scroll, "%d\n", m); + max = m; + if(max < ran) ran = max; + setValue(value()); + repaintEvent(NULL); +} + +int GUI::ScrollBar::maximum() +{ + return max; +} + +void GUI::ScrollBar::setValue(int value) +{ + val = value; + if(val > max - ran) val = max - ran; + if(val < 0) val = 0; + + if(handler) handler(ptr); + + repaintEvent(NULL); +} + +int GUI::ScrollBar::value() +{ + return val; +} + +void GUI::ScrollBar::registerValueChangeHandler(void (*handler)(void *), + void *ptr) +{ + this->handler = handler; + this->ptr = ptr; +} + +static void drawArrow(GUI::Painter &p, int x, int y, int w, int h) +{ + if(h < 0) y -= h; + + p.drawLine(x, y, x+(w/2), y+h); + p.drawLine(x+(w/2), y+h, x+w, y); + + y++; + p.drawLine(x, y, x+(w/2), y+h); + p.drawLine(x+(w/2), y+h, x+w, y); +} + +void GUI::ScrollBar::repaintEvent(RepaintEvent *e) +{ + GUI::Painter p(this); + + p.clear(); + + p.drawImageStretched(0, 0, &bg_img, width(), height()); + + p.setColour(GUI::Colour(183.0/255.0, 219.0/255.0 , 255.0/255.0, 1)); + if(!max) return; + + { + int h = height() - 2 * width() - 3; + int offset = width() + 2; + + int y_val1 = (val * h) / max; + int y_val2 = ((val + ran) * h) / max; + + p.drawFilledRectangle(2, y_val1 + offset, width() - 1, y_val2 + offset); + } + + p.drawLine(0, 0, 0, height()); + + drawArrow(p, width()/4, width()/4, width()/2, -1 * (width()/3)); + p.drawLine(0, width(), width(), width()); + + drawArrow(p, width()/4, height() - width() + width()/4, width()/2, width()/3); + p.drawLine(0, height() - width(), width(), height() - width()); +} + +void GUI::ScrollBar::scrollEvent(ScrollEvent *e) +{ + setValue(value() + e->delta); +} + +void GUI::ScrollBar::mouseMoveEvent(MouseMoveEvent *e) +{ + if(!dragging) return; + + float delta = yoffset - e->y; + + int h = height() - 2 * width() - 3; + delta /= (float)h / (float)max; + + int newval = value_offset - delta; + if(newval != value()) setValue(newval); +} + +void GUI::ScrollBar::buttonEvent(ButtonEvent *e) +{ + if(e->y < (int)width() && e->y > 0) { + if(e->direction == -1) setValue(value() - 1); + return; + } + + if(e->y > (int)height() - (int)width() && e->y < (int)height()) { + if(e->direction == -1) setValue(value() + 1); + return; + } + + if(e->direction == 1) { + yoffset = e->y; + value_offset = value(); + } + + dragging = (e->direction == 1); +} + +#ifdef TEST_SCROLLBAR +//Additional dependency files +//deps: +//Required cflags (autoconf vars may be used) +//cflags: +//Required link options (autoconf vars may be used) +//libs: +#include "test.h" + +TEST_BEGIN; + +// TODO: Put some testcode here (see test.h for usable macros). + +TEST_END; + +#endif/*TEST_SCROLLBAR*/ diff --git a/plugingui/scrollbar.h b/plugingui/scrollbar.h new file mode 100644 index 0000000..52acf9d --- /dev/null +++ b/plugingui/scrollbar.h @@ -0,0 +1,75 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * scrollbar.h + * + * Sun Apr 14 12:54:58 CEST 2013 + * Copyright 2013 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#ifndef __DRUMGIZMO_SCROLLBAR_H__ +#define __DRUMGIZMO_SCROLLBAR_H__ + +#include "widget.h" +#include "image.h" + +namespace GUI { + +class ScrollBar : public Widget { +public: + ScrollBar(Widget *parent); + + bool catchMouse() { return true; } + + void setRange(int range); + int range(); + + void setMaximum(int max); + int maximum(); + + void setValue(int value); + int value(); + + void registerValueChangeHandler(void (*handler)(void *), void *ptr); + + void repaintEvent(RepaintEvent *e); + void scrollEvent(ScrollEvent *e); + void buttonEvent(ButtonEvent *e); + void mouseMoveEvent(MouseMoveEvent *e); + +private: + int max; + int val; + int ran; + + int yoffset; + int value_offset; + bool dragging; + + Image bg_img; + + void (*handler)(void *); + void *ptr; +}; + +}; + + +#endif/*__DRUMGIZMO_SCROLLBAR_H__*/ diff --git a/plugingui/signal.cc b/plugingui/signal.cc new file mode 100644 index 0000000..5ba145e --- /dev/null +++ b/plugingui/signal.cc @@ -0,0 +1,478 @@ +#include +#include +#include +#include +#include +#include +#include + +///////////////////////////////////////// +// +// Listener and Notifier classes: +// +///////////////////////////////////////// + +class Listener; +class NotifierBase { +public: + virtual void disconnect(Listener* object) {} +}; + +class Listener { +public: + virtual ~Listener() + { + for (auto signal = signals.begin(); signal != signals.end(); ++signal) { + (*signal)->disconnect(this); + } + } + + void registerNotifier(NotifierBase* signal) + { + signals.insert(signal); + } + + void unregisterNotifier(NotifierBase* signal) + { + signals.erase(signal); + } + + std::set signals; +}; + +template +class Notifier : public NotifierBase { +public: + Notifier() {} + ~Notifier() + { + for (auto slot = slots.begin(); slot != slots.end(); ++slot) { + (*slot).first->unregisterNotifier(this); + } + } + + void connect(Listener* object, std::function slot) + { + slots[object] = slot; + if(object) { + object->registerNotifier(this); + } + } + + void disconnect(Listener* object) + { + slots.erase(object); + } + + void notify(T t, Args...args) + { + for (auto slot = slots.begin(); slot != slots.end(); ++slot) { + (*slot).second(t, args...); + } + } + + std::map> slots; +}; + +///////////////////////////////////////// +// +// Code which I don't understand but does something clever and produces a compile warning: +// +///////////////////////////////////////// + +template struct seq{}; +template +struct gen_seq : gen_seq{}; +template +struct gen_seq<0, Is...> : seq{}; + +template struct placeholder{}; + +namespace std{ +template +struct is_placeholder< ::placeholder > : integral_constant{}; +} // std:: + +namespace aux{ +template +auto easy_bind(seq, F&& f, Ts&&... vs) + -> decltype(std::bind(std::forward(f), std::forward(vs)..., ::placeholder<1 + Is>()...)) +{ + return std::bind(std::forward(f), std::forward(vs)..., ::placeholder<1 + Is>()...); +} +} // aux:: + +template +auto mem_bind(R (C::*ptmf)(FArgs...), Args&&... vs) + -> decltype(aux::easy_bind(gen_seq<(sizeof...(FArgs) + 1) - sizeof...(Args)>(), ptmf, std::forward(vs)...)) +{ + // the +1s for 'this' argument + static_assert(sizeof...(Args) <= sizeof...(FArgs) + 1, "too many arguments to mem_bind"); + return aux::easy_bind(gen_seq<(sizeof...(FArgs) + 1) - sizeof...(Args)>(), ptmf, std::forward(vs)...); +} + +template +auto mem_bind(T C::*ptmd, Args&&... vs) + -> decltype(aux::easy_bind(gen_seq<1 - sizeof...(Args)>(), ptmd, std::forward(vs)...)) +{ + // just 'this' argument + static_assert(sizeof...(Args) <= 1, "too many arguments to mem_bind"); + return aux::easy_bind(gen_seq<1 - sizeof...(Args)>(), ptmd, std::forward(vs)...); +} + + + +///////////////////////////////////////// +// +// Example: +// +///////////////////////////////////////// + +class MyObject : public Listener { +public: + void onMouseMoved(int x, int y) + { + std::cout << __PRETTY_FUNCTION__ << std::endl; + std::cout << "Mouse moved: " << x << "," << y << std::endl; + } +}; + +class MyObject2 : public Listener { +public: + void mouseMoved(int x, int y) + { + std::cout << __PRETTY_FUNCTION__ << std::endl; + std::cout << "Mouse moved: " << x << "," << y << std::endl; + } +}; + +class Button { +public: + Notifier mouseMove; // arguments: (int x, int y) + + void emulateMouseMove(int x, int y) + { + mouseMove.notify(x, y); + } +}; + + +#define CONN(O, M) &O, mem_bind(&decltype(O)::M, O) +#define obj_connect(SRC, SIG, TAR, SLO) SRC.SIG.connect(&TAR, mem_bind(&decltype(TAR)::SLO, TAR)) +#define fun_connect(SRC, SIG, SLO) SRC.SIG.connect(nullptr, SLO) + +int main() +{ + Button btn; + + MyObject object; + //btn.mouseMove.connect(&object, std::bind(&MyObject::onMouseMoved, std::ref(object), _1, _2 )); // 'Vanilla' interface + //btn.mouseMove.connect(&object, std::bind(&decltype::onMouseMoved, std::ref(object), _1, _2 )); // Use decltype + //btn.mouseMove.connect(&object, mem_bind(&decltype(object)::onMouseMoved, object)); // Use clever mem_bind construct + btn.mouseMove.connect(CONN(object, onMouseMoved)); // Use convenience macro + + obj_connect(btn, mouseMove, object, onMouseMoved); + fun_connect(btn, mouseMove, [](int x, int y) { + std::cout << __PRETTY_FUNCTION__ << std::endl; + std::cout << x << " x " << y << std::endl; + } ); + + MyObject2 object2; + btn.mouseMove.connect(CONN(object2, mouseMoved)); + + MyObject2* pobject2 = new MyObject2(); + btn.mouseMove.connect(pobject2, mem_bind(&decltype(std::remove_reference(*pobject2))::mouseMoved, std::ref(*pobject2))); + + + // Now trigger the notification + btn.emulateMouseMove(10,10); +} + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +#if 0 + +#include +#include +#include +#include +#include +#include + +template +class SignalBase { +public: + virtual T emit(T a) { return a; } + T slot(SignalBase* o, T a) { return o->emit(a); } +}; + +template +class Signal : public SignalBase { +public: + typedef SignalBase* signal_ptr_t; + + static T do_emit(signal_ptr_t o1, signal_ptr_t o2, T arg) + { + std::cout << __PRETTY_FUNCTION__ << "\n"; + // printf("%p %p\n", (void*)o1, (void*)o2); + return o1->slot(o2, arg); + } + + using bound_emit_t = + decltype(std::bind(do_emit, signal_ptr_t(), signal_ptr_t(), std::placeholders::_1)); + + using mem_t = decltype() + + + void connect(Signal& o) + { + connection_map[&o].emplace_back(do_emit, this, &o, std::placeholders::_1); + + if (o.connectee_objects.find(this) == o.connectee_objects.end()) { + o.connectee_objects.insert(this); + } + } + + void disconnect(Signal& o) + { + if (connection_map.find(&o) != connection_map.end()) { + connection_map[&o].clear(); + connection_map.erase(&o); + } + + if (o.connectee_objects.find(this) != o.connectee_objects.end()) { + connectee_objects.erase(this); + } + } + + void send(T a) + { + std::cout << "send: " << a << std::endl; + for (auto& slot : connection_map) { + for (auto& conn : slot.second) { + std::cout << conn(a) << std::endl; + } + } + } + + virtual ~Signal() + { + // Iterate all objects to which this is connected and disconnect from them: + for (auto& c : connectee_objects) { + c->disconnect(*this); + } + + // Iterate all objects connected to this and disconnect them: + for (auto& kv : connection_map) { + disconnect(*kv.first); + } + } + + std::map*, std::vector> connection_map; + std::set*> connectee_objects; // Signals to which this is connected +}; + +///////////////////////////////////////////////////////////////////////////////////// + +template +class Signal2 : public Signal { +public: + Signal2(T t) : t(t) {} + virtual T emit(T a) override { return a + t;} + T t; +}; + +int main() +{ + + std::cout << std::endl << "First:" << std::endl; + { + Signal o1; + + { + Signal2 o2(1); + Signal2 o3(1); + + o1.connect(o1); + o1.connect(o2); + o1.connect(o3); + + o1.send(4); + + o1.disconnect(o2); + + o1.send(5); + } // implicit o1.disconnect(o3) in o3 destructor. + + o1.send(6); + } + + std::cout << std::endl << "Second:" << std::endl; + { + Signal* o = new Signal(); + Signal& o1 = *o; + + { + Signal2 o2(1); + Signal2 o3(1); + + o1.connect(o1); + o1.connect(o2); + o1.connect(o3); + + o1.send(4.1); + + delete o; + std::cout << std::endl << " -- post delete:" << std::endl; + + o1.send(4.2); + + } // implicit o1.disconnect(o3) in o3 destructor. + } + + std::cout << std::endl << "Third:" << std::endl; + { + Signal o1; + + { + Signal2 o2("a"); + Signal2 o3("b"); + + o1.connect(o1); + o1.connect(o2); + o1.connect(o3); + + o1.send("hello"); + + o1.disconnect(o2); + + o1.send("world"); + } // implicit o1.disconnect(o3) in o3 destructor. + + o1.send("nisse"); + } + + return 0; +} + +#endif + +///////////////////////////////////////////////////////// +// What I would like(tm) +///////////////////////////////////////////////////////// +/* + +class Foo { +public: + Signal changeSignal; + + void worker() + { + somethingChangedSignal.emit(42, 1.234, "hello"); + } +}; + +class Bar { +public: + Bar(Foo &foo) + { + foo.changeSignal.connect(this, &Bar::notifyCallback); + } + + void notifyCallback(int a, float b, std::string c) + { + // ... + } +}; + +class Bas { +public: + void iWannaKnow(int a, float b, std::string c) + { + // ... + } +}; + +int main() +{ + Foo foo; + Bar bar(foo); + Bas bas; + foo.changeSignal.connect(&bas, &Bas::iWannaKnow); + foo.worker(); +} + +*/ diff --git a/plugingui/slider.cc b/plugingui/slider.cc new file mode 100644 index 0000000..953c8e6 --- /dev/null +++ b/plugingui/slider.cc @@ -0,0 +1,158 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * slider.cc + * + * Sat Nov 26 18:10:22 CET 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "slider.h" + +#include "painter.h" + +#include +#include + +GUI::Slider::Slider(Widget *parent) + : GUI::Widget(parent) +{ + state = up; + + val = 0.0; + maximum = 1.0; + minimum = 0.0; + + handler = NULL; + ptr = NULL; +} + +void GUI::Slider::setValue(float v) +{ + val = v; + if(handler) handler(ptr); + repaintEvent(NULL); +} + +float GUI::Slider::value() +{ + return val; +} + +void GUI::Slider::registerClickHandler(void (*handler)(void *), void *ptr) +{ + this->handler = handler; + this->ptr = ptr; +} + +void GUI::Slider::mouseMoveEvent(MouseMoveEvent *e) +{ + if(state == down) { + val = maximum / (float)width() * (float)e->x; + + if(val < 0) val = 0; + if(val > 1) val = 1; + + if(handler) handler(ptr); + repaintEvent(NULL); + } +} + +void GUI::Slider::buttonEvent(ButtonEvent *e) +{ + if(e->direction == 1) { + state = down; + val = maximum / (float)width() * (float)e->x; + + if(val < 0) val = 0; + if(val > 1) val = 1; + + if(handler) handler(ptr); + repaintEvent(NULL); + } + if(e->direction == -1) { + state = up; + val = maximum / (float)width() * (float)e->x; + + if(val < 0) val = 0; + if(val > 1) val = 1; + + repaintEvent(NULL); + clicked(); + if(handler) handler(ptr); + } +} + +void GUI::Slider::repaintEvent(GUI::RepaintEvent *e) +{ + //DEBUG(slider, "Slider::repaintEvent (%f)\n", val); + + Painter p(this); + + float alpha = 0.8; + + int xpos = (int)((val / maximum) * (float)(width() - 1)); + + if(hasKeyboardFocus()) { + p.setColour(Colour(0.6, alpha)); + } else { + p.setColour(Colour(0.5, alpha)); + } + p.drawFilledRectangle(0,0,width(),height()); + /* + p.setColour(Colour(0.1, alpha)); + p.drawRectangle(0,0,width()-1,height()-1); + */ + p.setColour(Colour(1, 0, 0, alpha)); + p.drawLine(xpos, 0, xpos, height()-1); + /* + p.setColour(Colour(0.8, alpha)); + switch(state) { + case up: + p.drawLine(0,0,0,height()-1); + p.drawLine(0,0,width()-1,0); + break; + case down: + p.drawLine(width()-1,0, width()-1,height()-1); + p.drawLine(width()-1,height()-1,0, height()-1); + break; + } + */ + p.setColour(Colour(0.3, alpha)); + p.drawPoint(0,height()-1); + p.drawPoint(width()-1,0); +} + +#ifdef TEST_SLIDER +//Additional dependency files +//deps: +//Required cflags (autoconf vars may be used) +//cflags: +//Required link options (autoconf vars may be used) +//libs: +#include "test.h" + +TEST_BEGIN; + +// TODO: Put some testcode here (see test.h for usable macros). + +TEST_END; + +#endif/*TEST_SLIDER*/ diff --git a/plugingui/slider.h b/plugingui/slider.h new file mode 100644 index 0000000..f07ccff --- /dev/null +++ b/plugingui/slider.h @@ -0,0 +1,70 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * slider.h + * + * Sat Nov 26 18:10:22 CET 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#ifndef __DRUMGIZMO_SLIDER_H__ +#define __DRUMGIZMO_SLIDER_H__ + +#include "widget.h" + +namespace GUI { + +class Slider : public Widget { +public: + Slider(Widget *parent); + + bool catchMouse() { return true; } + + void setValue(float value); + float value(); + + void registerClickHandler(void (*handler)(void *), void *ptr); + + //protected: + virtual void clicked() {} + + virtual void repaintEvent(RepaintEvent *e); + virtual void buttonEvent(ButtonEvent *e); + virtual void mouseMoveEvent(MouseMoveEvent *e); + +private: + typedef enum { + up, + down + } state_t; + + float val; + float maximum; + float minimum; + + state_t state; + + void (*handler)(void *); + void *ptr; +}; + +}; + +#endif/*__DRUMGIZMO_SLIDER_H__*/ diff --git a/plugingui/test.cc b/plugingui/test.cc new file mode 100644 index 0000000..2f60d37 --- /dev/null +++ b/plugingui/test.cc @@ -0,0 +1,172 @@ +#include +#include +#include +#include +#include +#include +#include + +///////////////////////////////////////// +// +// Listener and Notifier classes: +// +///////////////////////////////////////// + +class Listener; +class NotifierBase { +public: + virtual void disconnect(Listener* object) {} +}; + +class Listener { +public: + virtual ~Listener() + { + for (auto signal: signals) { + signal->disconnect(this); + } + } + + void registerNotifier(NotifierBase* signal) + { + signals.insert(signal); + } + + void unregisterNotifier(NotifierBase* signal) + { + signals.erase(signal); + } + + std::set signals; +}; + +template +class Notifier : public NotifierBase { +public: + Notifier() {} + ~Notifier() + { + for (auto slot: slots) { + slot.first->unregisterNotifier(this); + } + } + + void connect(Listener* object, std::function slot) + { + slots[object] = slot; + object->registerNotifier(this); + } + + void disconnect(Listener* object) + { + slots.erase(object); + } + + void notify(T t, Args...args) + { + for (auto slot: slots) { + slot.second(t, args...); + } + } + + std::map> slots; +}; + +///////////////////////////////////////// +// +// Code which I don't understand but does something clever and produces a compile warning: +// +///////////////////////////////////////// + +template struct seq{}; +template +struct gen_seq : gen_seq{}; +template +struct gen_seq<0, Is...> : seq{}; + +template struct placeholder{}; + +namespace std{ +template +struct is_placeholder< ::placeholder > : integral_constant{}; +} // std:: + +namespace aux{ +template +auto easy_bind(seq, F&& f, Ts&&... vs) -> decltype(std::bind(std::forward(f), std::forward(vs)..., ::placeholder<1 + Is>()...)) { + return std::bind(std::forward(f), std::forward(vs)..., ::placeholder<1 + Is>()...); +} +} // aux:: + +template +auto mem_bind(R (C::*ptmf)(FArgs...), Args&&... vs) -> decltype(aux::easy_bind(gen_seq<(sizeof...(FArgs) + 1) - sizeof...(Args)>(), ptmf, std::forward(vs)...)) { + // the +1s for 'this' argument + static_assert(sizeof...(Args) <= sizeof...(FArgs) + 1, "too many arguments to mem_bind"); + return aux::easy_bind(gen_seq<(sizeof...(FArgs) + 1) - sizeof...(Args)>(), ptmf, std::forward(vs)...); +} + +template +auto mem_bind(T C::*ptmd, Args&&... vs) -> decltype(aux::easy_bind(gen_seq<1 - sizeof...(Args)>(), ptmd, std::forward(vs)...)) { + // just 'this' argument + static_assert(sizeof...(Args) <= 1, "too many arguments to mem_bind"); + return aux::easy_bind(gen_seq<1 - sizeof...(Args)>(), ptmd, std::forward(vs)...); +} + + + +///////////////////////////////////////// +// +// Example: +// +///////////////////////////////////////// + +class MyObject : public Listener { +public: + void onMouseMoved(int x, int y) + { + std::cout << __PRETTY_FUNCTION__ << std::endl; + std::cout << "Mouse moved: " << x << "," << y << std::endl; + } +}; + +class MyObject2 : public Listener { +public: + void mouseMoved(int x, int y) + { + std::cout << __PRETTY_FUNCTION__ << std::endl; + std::cout << "Mouse moved: " << x << "," << y << std::endl; + } +}; + +class Button { +public: + Notifier mouseMove; // arguments: (int x, int y) + + void emulateMouseMove(int x, int y) + { + mouseMove.notify(x, y); + } +}; + + +#define CONN(O, M) &O, mem_bind(&decltype(O)::M, O) +#define _connect(SRC, SIG, TAR, SLO) SRC.SIG.connect(&TAR, mem_bind(&decltype(TAR)::SLO, TAR)) + +int main() +{ + Button btn; + + MyObject object; + //btn.mouseMove.connect(&object, std::bind(&MyObject::onMouseMoved, std::ref(object), _1, _2 )); // 'Vanilla' interface + //btn.mouseMove.connect(&object, std::bind(&decltype::onMouseMoved, std::ref(object), _1, _2 )); // Use decltype + //btn.mouseMove.connect(&object, mem_bind(&decltype(object)::onMouseMoved, object)); // Use clever mem_bind construct + btn.mouseMove.connect(CONN(object, onMouseMoved)); // Use convenience macro + + _connect(btn, mouseMove, object, onMouseMoved); + + MyObject2 object2; + btn.mouseMove.connect(CONN(object2, mouseMoved)); + + // Now trigger the notification + btn.emulateMouseMove(10,10); +} diff --git a/plugingui/tester.cc b/plugingui/tester.cc new file mode 100644 index 0000000..a6dfb6d --- /dev/null +++ b/plugingui/tester.cc @@ -0,0 +1,50 @@ +#include +#include +#include + +template +struct indices {}; + +template +struct build_indices + : build_indices {}; + +template +struct build_indices<0, Is...> : indices {}; + +template struct placeholder{}; + +namespace std{ +template +struct is_placeholder< ::placeholder> : std::integral_constant{}; +} // std:: +namespace detail{ + template + auto my_bind(indices, Ret (Fn::*f)(MArgs...), Fn *i, Args&&... args) + -> decltype(std::bind(f, i, std::forward(args)..., placeholder<1 + Is>{}...)){ + return std::bind(f, i, std::forward(args)..., placeholder<1 + Is>{}...); + } +} + +template +auto my_bind(std::function, Ret (Fn::*f)(MArgs...), Fn *i, Args&&... args) + -> decltype(detail::my_bind(build_indices{}, f, i, std::forward(args)...)){ + + return detail::my_bind(build_indices{}, f, i, std::forward(args)...); +} + + +#include +struct tmp{ + void testt(int var1, int var2){ + std::cout << var1 << " " << var2 << std::endl; + } +}; + +int main(){ + + tmp TMP; + auto f3 = my_bind(std::function(), &tmp::testt, &TMP); + f3(22, 23); + +} diff --git a/plugingui/verticalline.cc b/plugingui/verticalline.cc new file mode 100644 index 0000000..53d82a6 --- /dev/null +++ b/plugingui/verticalline.cc @@ -0,0 +1,41 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * verticalline.cc + * + * Sat Apr 6 12:59:44 CEST 2013 + * Copyright 2013 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "verticalline.h" + +#include "painter.h" + +GUI::VerticalLine::VerticalLine(GUI::Widget *parent) + : Widget(parent), vline(":vertline.png") +{ +} + +void GUI::VerticalLine::repaintEvent(RepaintEvent *e) +{ + (void)e; + GUI::Painter p(this); + p.drawImageStretched(0, 0, &vline, width(), height()); +} diff --git a/plugingui/verticalline.h b/plugingui/verticalline.h new file mode 100644 index 0000000..7c1bc27 --- /dev/null +++ b/plugingui/verticalline.h @@ -0,0 +1,48 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * verticalline.h + * + * Sat Apr 6 12:59:43 CEST 2013 + * Copyright 2013 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#ifndef __DRUMGIZMO_VERTICALLINE_H__ +#define __DRUMGIZMO_VERTICALLINE_H__ + +#include "widget.h" +#include "image.h" + +namespace GUI { + +class VerticalLine : public Widget { +public: + VerticalLine(Widget *parent); + + //protected: + virtual void repaintEvent(RepaintEvent *e); + +private: + Image vline; +}; + +}; + +#endif/*__DRUMGIZMO_VERTICALLINE_H__*/ diff --git a/plugingui/widget.cc b/plugingui/widget.cc new file mode 100644 index 0000000..0919e22 --- /dev/null +++ b/plugingui/widget.cc @@ -0,0 +1,189 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * widget.cc + * + * Sun Oct 9 13:01:44 CEST 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "widget.h" + +#include "painter.h" +#include "window.h" + +#include + +namespace GUI { + +Widget::Widget(Widget *parent) + : pixbuf(1, 1) +{ + _width = _height = 10; + + this->parent = parent; + if(parent) { + parent->addChild(this); + _window = parent->window(); + } + _width = _height = 0; + _visible = true; +} + +Widget::~Widget() +{ + if(parent) parent->removeChild(this); +} + +void Widget::show() +{ + setVisible(true); +} + +void Widget::hide() +{ + setVisible(false); +} + +void Widget::setVisible(bool v) +{ + _visible = v; + repaintEvent(NULL); +} + +bool Widget::visible() +{ + return _visible; +} + +void Widget::addChild(Widget *widget) +{ + children.push_back(widget); +} + +void Widget::removeChild(Widget *widget) +{ + std::vector::iterator i = children.begin(); + while(i != children.end()) { + if(*i == widget) { + children.erase(i); + return; + } + i++; + } +} + +void Widget::resize(int width, int height) +{ + if(width < 1 || height < 1) return; + _width = width; + _height = height; + pixbuf.realloc(width, height); +} + +void Widget::move(size_t x, size_t y) +{ + _x = x; + _y = y; +} + +size_t Widget::x() { return _x; } +size_t Widget::y() { return _y; } +size_t Widget::width() { return _width; } +size_t Widget::height() { return _height; } + +size_t Widget::windowX() +{ + size_t window_x = x(); + if(parent) window_x += parent->windowX(); + return window_x; +} + +size_t Widget::windowY() +{ + size_t window_y = y(); + if(parent) window_y += parent->windowY(); + return window_y; +} + +Widget *Widget::find(size_t x, size_t y) +{ + std::vector::reverse_iterator i = children.rbegin(); + while(i != children.rend()) { + Widget *w = *i; + if(w->visible()) { + if(w->x() <= x && (w->x() + w->width()) >= x && + w->y() <= y && w->y() + w->height() >= y) + return w->find(x - w->x(), y - w->y()); + } + i++; + } + + if(x > width() || x < 0 || y > height() || y < 0) return NULL; + return this; +} + +Window *Widget::window() +{ + return _window; +} + +void Widget::repaint_r(RepaintEvent *e) +{ + Painter p(this); // make sure pixbuf refcount is incremented. + + repaintEvent(e); + + std::vector::iterator i = children.begin(); + while(i != children.end()) { + Widget *w = *i; + w->repaint_r(e); + i++; + } +} + +std::vector Widget::getPixelBuffers() +{ + std::vector pbs; + + pixbuf.x = windowX(); + pixbuf.y = windowY(); + + pbs.push_back(&pixbuf); + + std::vector::iterator i = children.begin(); + while(i != children.end()) { + Widget *w = *i; + if(w->visible()) { + std::vector pbs0 = w->getPixelBuffers(); + pbs.insert(pbs.end(), pbs0.begin(), pbs0.end()); + } + i++; + } + + return pbs; +} + +bool Widget::hasKeyboardFocus() +{ + return window()->keyboardFocus() == this; +} + +} // GUI:: diff --git a/plugingui/widget.h b/plugingui/widget.h new file mode 100644 index 0000000..13725f0 --- /dev/null +++ b/plugingui/widget.h @@ -0,0 +1,97 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * widget.h + * + * Sun Oct 9 13:01:44 CEST 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#pragma once + +#include "guievent.h" +#include "pixelbuffer.h" +#include "notifier.h" + +#include + +namespace GUI { + +class Window; + +class Widget : public Listener { +public: + Widget(Widget *parent); + virtual ~Widget(); + + virtual void show(); + virtual void hide(); + + virtual void resize(int width, int height); + virtual void move(size_t x, size_t y); + + virtual size_t x(); + virtual size_t y(); + virtual size_t windowX(); + virtual size_t windowY(); + virtual size_t width(); + virtual size_t height(); + + virtual bool isFocusable() { return false; } + virtual bool catchMouse() { return false; } + + void addChild(Widget *widget); + void removeChild(Widget *widget); + + virtual void repaintEvent(RepaintEvent *e) {} + virtual void mouseMoveEvent(MouseMoveEvent *e) {} + virtual void buttonEvent(ButtonEvent *e) {} + virtual void scrollEvent(ScrollEvent *e) {} + virtual void keyEvent(KeyEvent *e) {} + + virtual void mouseLeaveEvent() {} + virtual void mouseEnterEvent() {} + + Widget *find(size_t x, size_t y); + + virtual Window *window(); + + void repaint_r(RepaintEvent *e); + + PixelBufferAlpha pixbuf; + std::vector getPixelBuffers(); + + bool hasKeyboardFocus(); + + Widget *parent; + + bool visible(); + void setVisible(bool visible); + +protected: + std::vector children; + Window *_window; + size_t _x, _y, _width, _height; + +private: + bool _visible; +}; + +} // GUI:: diff --git a/plugingui/window.cc b/plugingui/window.cc new file mode 100644 index 0000000..8337533 --- /dev/null +++ b/plugingui/window.cc @@ -0,0 +1,245 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * window.cc + * + * Sun Oct 9 13:11:53 CEST 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "window.h" + +#include "painter.h" + +#include +#include + +#include +#include + +#ifndef PUGL +#ifdef X11 +#include "nativewindow_x11.h" +#endif/*X11*/ +#ifdef WIN32 +#include "nativewindow_win32.h" +#endif/*WIN32*/ +#else +#include "nativewindow_pugl.h" +#endif + +GUI::Window::Window() + : Widget(NULL), wpixbuf(100, 100), back(":bg.png"), logo(":logo.png") +{ + _x = _y = 100; + _width = wpixbuf.width; + _height = wpixbuf.height; + + refcount = 0; + max_refcount = 0; + _keyboardFocus = this; + _buttonDownFocus = NULL; + _mouseFocus = NULL; + +#ifndef PUGL +#ifdef X11 + native = new NativeWindowX11(this); +#endif/*X11*/ +#ifdef WIN32 + native = new NativeWindowWin32(this); +#endif/*WIN32*/ +#else/*Use pugl*/ + native = new NativeWindowPugl(this); +#endif + + eventhandler = new GUI::EventHandler(native, this); +} + +GUI::Window::~Window() +{ + delete native; + delete eventhandler; +} + +GUI::EventHandler *GUI::Window::eventHandler() +{ + return eventhandler; +} + +void GUI::Window::setCaption(std::string caption) +{ + native->setCaption(caption); +} + +void GUI::Window::repaintEvent(GUI::RepaintEvent *e) +{ + if(!visible()) return; + + Painter p(this); + p.drawImageStretched(0,0, &back, width(), height()); + p.drawImage(width() - logo.width(), + height() - logo.height(), &logo); +} + +void GUI::Window::setFixedSize(int w, int h) +{ + native->setFixedSize(w, h); + resize(w,h); +} + +void GUI::Window::resize(int width, int height) +{ + if(width < 1 || height < 1) return; + + // This needs to be done on all platoforms when setFixedSize is introduced. + //#ifdef WIN32 + // Fix to force buffer size reallocation + // FIXME: This should've been done indirectly through a WM_SIZE message in the + // EventHandler... + resized(width, height); + //#endif + + Widget::resize(width, height); + native->resize(width, height); +} + +void GUI::Window::move(size_t x, size_t y) +{ + native->move(x, y); + + // Make sure widget corrds are updated. + Widget::move(x, y); +} + +size_t GUI::Window::x() { return _x; } +size_t GUI::Window::y() { return _y; } +size_t GUI::Window::width() { return _width; } +size_t GUI::Window::height() { return _height; } +size_t GUI::Window::windowX() { return 0; } +size_t GUI::Window::windowY() { return 0; } + +void GUI::Window::show() +{ + repaint_r(NULL); + native->show(); +} + +void GUI::Window::hide() +{ + native->hide(); +} + +GUI::Window *GUI::Window::window() +{ + return this; +} + +void GUI::Window::beginPaint() +{ + refcount++; + if(refcount > max_refcount) max_refcount = refcount; +} + +void GUI::Window::endPaint() +{ + if(refcount) refcount--; + + if(!refcount) { + if(max_refcount > 1) { // Did we go deep enough for a buffer update? + updateBuffer(); + redraw(); + } + max_refcount = 0; + } +} + +void GUI::Window::updateBuffer() +{ + DEBUG(window, "Updating buffer\n"); + memset(wpixbuf.buf, 0, wpixbuf.width * wpixbuf.height * 3); + + std::vector pl = getPixelBuffers(); + std::vector::iterator pli = pl.begin(); + while(pli != pl.end()) { + PixelBufferAlpha *pb = *pli; + for(size_t x = 0; x < pb->width; x++) { + for(size_t y = 0; y < pb->height; y++) { + unsigned char r,g,b,a; + pb->pixel(x,y,&r,&g,&b,&a); + wpixbuf.setPixel(x + pb->x, y + pb->y, r, g, b, a); + } + } + pli++; + } + native->handleBuffer(); +} + +void GUI::Window::resized(size_t w, size_t h) +{ + if(_width == w && _height == h) return; + + _width = w; + _height = h; + wpixbuf.realloc(w, h); + updateBuffer(); + + pixbuf.realloc(w, h); + repaintEvent(NULL); +} + +void GUI::Window::redraw() +{ + native->redraw(); +} + +GUI::Widget *GUI::Window::keyboardFocus() +{ + return _keyboardFocus; +} + +void GUI::Window::setKeyboardFocus(GUI::Widget *widget) +{ + GUI::Widget *old_focus = _keyboardFocus; + _keyboardFocus = widget; + + if(old_focus) old_focus->repaintEvent(NULL); + if(_keyboardFocus) _keyboardFocus->repaintEvent(NULL); +} + +GUI::Widget *GUI::Window::buttonDownFocus() +{ + return _buttonDownFocus; +} + +void GUI::Window::setButtonDownFocus(GUI::Widget *widget) +{ + _buttonDownFocus = widget; + native->grabMouse(widget != NULL); +} + +GUI::Widget *GUI::Window::mouseFocus() +{ + return _mouseFocus; +} + +void GUI::Window::setMouseFocus(GUI::Widget *widget) +{ + _mouseFocus = widget; +} diff --git a/plugingui/window.h b/plugingui/window.h new file mode 100644 index 0000000..f8deef0 --- /dev/null +++ b/plugingui/window.h @@ -0,0 +1,105 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * window.h + * + * Sun Oct 9 13:11:52 CEST 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#ifndef __DRUMGIZMO_WINDOW_H__ +#define __DRUMGIZMO_WINDOW_H__ + +#include "widget.h" + +#include "pixelbuffer.h" +#include "nativewindow.h" +#include "image.h" +#include "eventhandler.h" + +namespace GUI { + +class Window : public Widget { +public: + Window(); + ~Window(); + + void show(); + void hide(); + + void setFixedSize(int width, int height); + void resize(int width, int height); + void move(size_t x, size_t y); + + size_t x(); + size_t y(); + size_t windowX(); + size_t windowY(); + size_t width(); + size_t height(); + + void setCaption(std::string caption); + + void addChild(Widget *widget); + + void repaintEvent(GUI::RepaintEvent *e); + + void beginPaint(); + void endPaint(); + + Window *window(); + + EventHandler *eventHandler(); + + // handlers + virtual void redraw(); + void resized(size_t w, size_t h); + + Widget *keyboardFocus(); + void setKeyboardFocus(Widget *widget); + + Widget *buttonDownFocus(); + void setButtonDownFocus(Widget *widget); + + Widget *mouseFocus(); + void setMouseFocus(Widget *widget); + + PixelBuffer wpixbuf; + void updateBuffer(); + +protected: + size_t refcount; + + Widget *_keyboardFocus; + Widget *_buttonDownFocus; + Widget *_mouseFocus; + + NativeWindow *native; + EventHandler *eventhandler; + + Image back; + Image logo; + + size_t max_refcount; +}; + +}; + +#endif/*__DRUMGIZMO_WINDOW_H__*/ -- cgit v1.2.3