Added ability in the Image Library to handle PNG transparency for resize operations when using the GD lib.
diff --git a/system/libraries/Image_lib.php b/system/libraries/Image_lib.php
index 21e0a70..806d942 100644
--- a/system/libraries/Image_lib.php
+++ b/system/libraries/Image_lib.php
@@ -513,6 +513,13 @@
}
$dst_img = $create($this->width, $this->height);
+
+ if ($this->image_type == 3) // png we can actually preserve transparency
+ {
+ imagealphablending($dst_img, FALSE);
+ imagesavealpha($dst_img, TRUE);
+ }
+
$copy($dst_img, $src_img, 0, 0, $this->x_axis, $this->y_axis, $this->width, $this->height, $this->orig_width, $this->orig_height);
// Show the image