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+--- Thread: Image lib black background on crop (/showthread.php?tid=27069)
Image lib black background on crop - El Forum - 01-31-2010
[eluser]zbrox[/eluser]
Hi there,
I'm trying to resize an image to a smaller one with different proportions. The resulting image comes out with an area of black where's the extra space. However I need it to be either transparent, or white, but not black
I edited the Image library so that it would resize PNG's without losing the transparency. I added this:
Code:
if ($this->image_type == 3 || $this->image_type == 1) {
//Using alpha channel
imagealphablending($dst_img, false);
imagesavealpha($dst_img,true);
//Allocating transparent color
$transparent = imagecolorallocatealpha($dst_img, 255, 255, 255, 127);
//full image filled with transparent color
imagefilledrectangle($dst_img, 0, 0, $this->width, $this->height, $transparent);
}Judging by it imagefilledrectangle gets $transparent as a background color, I tried changing it to the $white variable used above in the code, but still the result is a black background.
Any ideas why this is happening?
Image lib black background on crop - El Forum - 01-31-2010
[eluser]matt2012[/eluser]
Have you set your library to GD2?
Image lib black background on crop - El Forum - 01-31-2010
[eluser]zbrox[/eluser]
Yes, I'm using GD2, not GD.
Image lib black background on crop - El Forum - 01-31-2010
[eluser]zbrox[/eluser]
I forgot to mention I'm using Codeigniter 1.7.2.
Image lib black background on crop - El Forum - 04-24-2010
[eluser]elvix[/eluser]
i'm not sure you need that last line imagefilledrectangle. try deleting it?