imagetransparent

[ucbones]

Been struggling with this for an hour, and am completely stumped.

$light and $dark are being set ok, but the problem is the transparency...

I would expect the colour specified as imagecolorallocate ($im, 145, 168, 249) to be see-through, so that it is effectively not there, for some reason, however, it is making the black bits of my image see through, any ideas?

$overlay=imagecreatefrompng("build/h1left.png");
$file="../images/main/$theme/h1left.png";
$im = imagecreate (91, 38);
imagecolortransparent($overlay,imagecolorallocate ($im, 145, 168, 249));
$dark = imagecolorallocate ($im, $row["darkr"], $row["darkg"], $row["darkb"]);
$light = imagecolorallocate ($im, $row["lightr"], $row["lightg"], $row["lightb"]);
imagefill ($im, 0, 0, $light);
imagecopy($im,$overlay,0,0,0,0,91,38);
imagepng ($im,$file);
imagedestroy ($im);
echo "<img src='../images/main/$theme/h1left.png'><br><br>";

many thanks,

ucbones

[crosbystillsnas]

maybe one of these makes it work? sorry, didnt test it.

imagecolortransparent($im,imagecolorallocate ($im, 145, 168, 249));

or

imagecolortransparent($overlay,imagecolorallocate ($overlay, 145, 168, 249));

[ucbones]

Discovered the problem...

For some reason, the imagetransparent functions only seem to work with PNG8, not PNG32, which I was using. It also seems generally to be a good idea to limit the image to a fairly low number of colors (approx 20).

Many thanks,

ucbones