From 24bb55371a5d8d81b23521ebdfcde68f0035697c Mon Sep 17 00:00:00 2001
From: Bent Bisballe Nyeng <deva@aasimon.org>
Date: Sun, 20 Sep 2015 11:36:22 +0200
Subject: Basic project based on DrumGizmo.

---
 plugingui/image.cc | 119 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 119 insertions(+)
 create mode 100644 plugingui/image.cc

(limited to 'plugingui/image.cc')

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 <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdarg.h>
+#include <stdint.h>
+
+#include <hugin.hpp>
+
+#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;
+}
-- 
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