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-rw-r--r--system/libraries/Image_lib.php13
1 files changed, 10 insertions, 3 deletions
diff --git a/system/libraries/Image_lib.php b/system/libraries/Image_lib.php
index c9fd558bc..529532e60 100644
--- a/system/libraries/Image_lib.php
+++ b/system/libraries/Image_lib.php
@@ -2,11 +2,11 @@
/**
* CodeIgniter
*
- * An open source application development framework for PHP 5.2.4 or newer
+ * An open source application development framework for PHP
*
* This content is released under the MIT License (MIT)
*
- * Copyright (c) 2014, British Columbia Institute of Technology
+ * Copyright (c) 2014 - 2015, British Columbia Institute of Technology
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
@@ -29,7 +29,7 @@
* @package CodeIgniter
* @author EllisLab Dev Team
* @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (http://ellislab.com/)
- * @copyright Copyright (c) 2014, British Columbia Institute of Technology (http://bcit.ca/)
+ * @copyright Copyright (c) 2014 - 2015, British Columbia Institute of Technology (http://bcit.ca/)
* @license http://opensource.org/licenses/MIT MIT License
* @link http://codeigniter.com
* @since Version 1.0.0
@@ -1212,6 +1212,13 @@ class CI_Image_lib {
imagecopymerge($src_img, $wm_img, $x_axis, $y_axis, 0, 0, $wm_width, $wm_height, $this->wm_opacity);
}
+ // We can preserve transparency for PNG images
+ if ($this->image_type === 3)
+ {
+ imagealphablending($src_img, FALSE);
+ imagesavealpha($src_img, TRUE);
+ }
+
// Output the image
if ($this->dynamic_output === TRUE)
{