Hello there,
I have a slight problem.
I'm using GD to resize some transparent gifs. And the way it displays the transparancy is bugging me.
Instead of beeing transparent, it displays the black transparancy color.
Is there a way to make it display a white background whenever there is transparancy? Instead of black?
Here is the code:
PHP Code:
<?php
$image = $_GET['i'];
$max_width = $_GET['w'];
$max_height = $_GET['h'];
$picture_location = $image;
$picture_save = str_replace($image, array(".jpg", ".gif", ".png"), ".temp");
$im_size = GetImageSize ( $picture_location);
$imageWidth = $im_size[0];
$imageHeight = $im_size[1];
if (eregi('.jpg', $picture_location)) { //If file is a JPG
$im2 = ImageCreateFromJPEG($picture_location);
} elseif (eregi('.gif', $picture_location)) { //If file is a GIF
$im2 = ImageCreateFromGIF($picture_location);
} elseif (eregi('.png', $picture_location)) { //If file is a PNG
$im2 = ImageCreateFromPNG($picture_location);
}
$x_ratio = $max_width / $imageWidth;
$y_ratio = $max_height / $imageHeight;
if ( ($imageWidth <= $max_width) || ($imageHeight <= $max_height) ) {
$tn_width = $imageWidth;
$tn_height = $imageWeight;
}
if (($x_ratio * $imageHeight) < $max_height) {
$tn_height = ceil($x_ratio * $imageHeight);
$tn_width = $max_width;
}
else {
$tn_width = ceil($y_ratio * $imageWidth);
$tn_height = $max_height;
}
$im = imageCreateTrueColor( $tn_width, $tn_height );
ImageCopyResampled ($im,$im2, 0, 0, 0, 0, $tn_width, $tn_height,$imageWidth, $imageHeight);
if (eregi('.jpg', $picture_location)) { //If file is a JPG
Header("Content-type: image/jpeg");
Imagejpeg($im,'',100); //to print to screen
Imagejpeg($im,$picture_save,100);
} elseif (eregi('.gif', $picture_location)) { //If file is a GIF
Header("Contrnt-type: image/gif");
Imagegif($im,'',100);
Imagegif($im,$picture_save,100);
} elseif (eregi('.png', $picture_location)) { //If file is a PNG
Header("Content-type: image/png");
Imagepng($im,'',100);
Imagepng($im,$picture_save,100);
}
ImageDestroy($im);
ImageDestroy ($im2);
?>
Thank You
Linear Mode
