Resizing of transparent/animated gifs [solved]

[eluser]#1313[/eluser]
There are no native functions capable of resizing transparent gifs in GD2.


So i wrote a little patch to the image_lib image_process_gd() function (actually, this patch is copied from PHP Online Manual):

0. backup your \system\libraries\Image_lib.php
1. locate following line of code in the \system\libraries\Image_lib.php (somewhere in the image_process_gd() function, near line #512)

Code:

$dst_img = $create($this->width, $this->height);

2. insert these lines right after that line:

Code:

// keeping transparency
        $transparent_index = imagecolortransparent($src_img);
        if ($transparent_index >= 0) {
            imagepalettecopy($src_img, $dst_img);
            imagefill($dst_img, 0, 0, $transparent_index);
            imagecolortransparent($dst_img, $transparent_index);
            imagetruecolortopalette($dst_img, true, 256);
        }

3. test and see if this helped

In my case this patch completely did the magic and now my transparent gifs (and pngs) remain transparent after resizing. Hope this'll help someone.