From fa461befbc940a6dd5dd40843551d2c3d1a3c34b Mon Sep 17 00:00:00 2001
From: Georg Ehrke <developer@georgehrke.com>
Date: Wed, 30 Jul 2014 12:16:03 +0200
Subject: [PATCH] extract transparency fix from #8050
---
lib/private/image.php | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/lib/private/image.php b/lib/private/image.php
index 5331c39915..0dff8c5a9d 100644
--- a/lib/private/image.php
+++ b/lib/private/image.php
@@ -870,6 +870,14 @@ class OC_Image {
imagedestroy($process);
return false;
}
+
+ // preserve transparency
+ if($this->imageType == IMAGETYPE_GIF or $this->imageType == IMAGETYPE_PNG) {
+ imagecolortransparent($process, imagecolorallocatealpha($process, 0, 0, 0, 127));
+ imagealphablending($process, false);
+ imagesavealpha($process, true);
+ }
+
imagecopyresampled($process, $this->resource, 0, 0, $x, $y, $w, $h, $w, $h);
if ($process == false) {
OC_Log::write('core', __METHOD__.'(): Error resampling process image '.$w.'x'.$h, OC_Log::ERROR);
--
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