function _imageResizeGif($file, $output, $origwidth, $origheight, $width, $height, $cropX = 0, $cropY = 0)
{
if (!function_exists('imagegif') && (!function_exists('imagecreatefromgif') || !function_exists('imagepng'))) {
return false;
}
$canGif = true;
// more robust gif support check for PHP > 4.0.2
if (function_exists('imagetypes')) {
if (!(imagetypes() & IMG_GIF)) {
$canGif = false;
if (!(imagetypes() & IMG_PNG)) {
return false;
}
}
}
//$extension = strrchr(strtolower($file),'.');
// check and set required memory to process this image
if (!$this->_setMemoryForImage($file)) {
return false;
}
//create the blank limited-palette image
if (!($base_image = $this->_imageCreateBase($width, $height))) {
return false;
}
// get the image pointer to the original image
if (!($imageToResize = @imagecreatefromgif($file))) {
return false;
}
if (function_exists('imagecopyresampled')) {
if (!@imagecopyresampled($base_image, $imageToResize, 0, 0, $cropX, $cropY, $width, $height, $origwidth, $origheight)) {
@imagecopyresized($base_image, $imageToResize, 0, 0, $cropX, $cropY, $width, $height, $origwidth, $origheight);
}
} else {
@imagecopyresized($base_image, $imageToResize, 0, 0, $cropX, $cropY, $width, $height, $origwidth, $origheight);
}
if (!function_exists('imagegif') || !$canGif) {
$outputFunction = 'imagepng';
$header = 'Content-type: image/x-png';
//$output = str_replace($extension, '.png', $output);
} else {
$outputFunction = 'imagegif';
$header = 'Content-type: image/gif';
}
$return = false;
$doIt = true;
$deleteOrig = false;
if (empty($output)) {
header($header, true);
if (@$outputFunction($base_image)) {
$return = array($width, $height, $output);
}
} else {
if ($outputFunction == 'imagepng') {
// extension on the output file must be changed
//$name = substr($output, 0, strlen($output) - strlen($extension));
$name = $output . '.png';
if (file_exists($name)) {
$return = false;
$doIt = false;
} else {
if ($file == $output) {
$deleteOrig = true;
}
$output = $name;
}
}
$fh = @fopen($output, 'w');
@fclose($fh);
if ($doIt) {
if (@$outputFunction($base_image, $output)) {
//image destination
if ($outputFunction == 'imagepng') {
if ($deleteOrig) {
@unlink($file);
}
}
$return = array($width, $height, $output);
if (!empty($this->fileCHMOD)) {
$fs = new wproFilesystem();
$fs->chmod($output, $this->fileCHMOD);
}
}
}
}
@imagedestroy($base_image);
@imagedestroy($imageToResize);
return $return;
}