chris.boxclever.ca

I already posted what to do with Adobe Dreamweaver Developer Toolkit and watermarking transparent PNG images. But, we also ran into a situation where we wanted to preserve transparency AND manually specify the image width and height. The original fix will work just fine if you leave width and height alone.

Here’s the fixed getImageCreate function (line 1886 of KT_Image.class.php)

function &getImageCreate($destWidth, $destHeight)
{
if (function_exists('imagecreatetruecolor') && $this->gdInfo>=2) {
$image = imagecreatetruecolor($destWidth, $destHeight);
imagesavealpha($image, true);
$trans_colour = imagecolorallocatealpha($image, 0, 0, 0, 127);
imagefill($image, 0, 0, $trans_colour);

} else {
$image = imagecreate($destWidth, $destHeight);
}
return $image;
}


Here’s the original, in case you need to roll back:

function &getImageCreate($destWidth, $destHeight)
{
if (function_exists('imagecreatetruecolor') && $this->gdInfo>=2) {
$image = imagecreatetruecolor($destWidth, $destHeight);
imagecolorallocate($image, 0, 0, 0);
$transparent = imagecolorallocate($image, 255, 0, 0);
imagecolortransparent($image, $transparent);
} else {
$image = imagecreate($destWidth, $destHeight);
}
return $image;
}


To me, it appears that the line imagecolorallocate($image, 0, 0, 0);
does nothing, as imagecolorallocate is used with imagecreate not imagecreatetruecolor.

Also, why specify RED as the only option for transparency? Or am I missing something? $transparent = imagecolorallocate($image, 255, 0, 0);