From 78e8418d39975e22043b3ffe1df04a439c9ee25c Mon Sep 17 00:00:00 2001
From: deva <deva>
Date: Fri, 16 Apr 2010 17:58:50 +0000
Subject: New improved scaling (and now cutting) function.
---
utils/imagecache.php | 38 ++++++++++++++++++++++++++------------
1 file changed, 26 insertions(+), 12 deletions(-)
(limited to 'utils/imagecache.php')
diff --git a/utils/imagecache.php b/utils/imagecache.php
index 347e946..3f91d79 100644
--- a/utils/imagecache.php
+++ b/utils/imagecache.php
@@ -15,19 +15,33 @@ class ImageSize {
}
};
-function rescale($image, $maxwidth, $maxheight)
+function rescale($image, $width, $height)
{
- $width = imagesx($image);
- $height = imagesy($image);
-
- if($width <= $maxwidth && $height <= $maxheight) return $image;
-
- $scale = 1;
- if($width > $maxwidth) $scale = $width / $maxwidth;
- if($height / $scale > $maxheight) $scale = $height / $maxheight;
-
- $image_p = imagecreatetruecolor($width / $scale, $height / $scale);
- imagecopyresampled($image_p, $image, 0, 0, 0, 0, $width / $scale, $height / $scale, $width, $height);
+ $aspect = $width / $height;
+
+ $w = imagesx($image);
+ $h = imagesy($image);
+
+ $image_p = imagecreatetruecolor($width, $height);
+
+ $margin = 0;
+ $scale = 1.0;
+
+ if($w / $h > $aspect) {
+ // Cut right and left sides
+ $scale = $height / $h;
+ $margin = ($w * $scale - $width) / 2;
+ $margin /= $scale;
+ imagecopyresampled($image_p, $image, 0, 0, 0 + $margin, 0,
+ $width, $height, $w - $margin * 2, $h);
+ } else {
+ // Cut top and bottom
+ $scale = $width / $w;
+ $margin = ($h * $scale - $height) / 2;
+ $margin /= $scale;
+ imagecopyresampled($image_p, $image, 0, 0, 0, 0 + $margin / 2,
+ $width, $height, $w, $h - $margin * 2);
+ }
return $image_p;
}
--
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