| Zeiss |
02-01-2013 08:50 AM |
php image resizer to image cropper
Can you help me transofrm this? I wanna make it crop from center of image, not to resize it to fit a box. Original image must also be kept, should image regeneration be required later on.
PHP Code:
<?php if ( ! defined('ABS_PATH')) exit('ABS_PATH is not loaded. Direct access is not allowed.');
class ImageResizer {
public static function fromFile($imagePath) {
return new ImageResizer($imagePath);
}
private $im;
private function __construct($imagePath) {
if(!file_exists($imagePath)) throw new Exception("$imagePath does not exist!");
if(!is_readable($imagePath)) throw new Exception("$imagePath is not readable!");
if(filesize($imagePath)==0) throw new Exception("$imagePath is corrupt or broken!");
if(osc_use_imagick()) {
$this->im = new Imagick($imagePath);
} else {
$content = file_get_contents($imagePath);
$this->im = imagecreatefromstring($content);
}
return $this;
}
public function __destruct() {
if(osc_use_imagick()) {
$this->im->destroy();
} else {
imagedestroy($this->im);
}
}
public function resizeTo($width, $height) {
if(osc_use_imagick()) {
$bg = new Imagick();
$bg->newImage($width, $height, '#FF7F26');
$this->im->thumbnailImage($width, $height, true);
$geometry = $this->im->getImageGeometry();
$x = ( $width - $geometry['width'] ) / 2;
$y = ( $height - $geometry['height'] ) / 2;
$bg->compositeImage( $this->im, imagick::COMPOSITE_OVER, $x, $y );
$this->im = $bg;
} else {
$w = imagesx($this->im);
$h = imagesy($this->im);
if(($w/$h)>=($width/$height)) {
//$newW = $width;
$newW = ($w > $width)? $width : $w;
$newH = $h * ($newW / $w);
} else {
//$newH = $height;
$newH = ($h > $height)? $height : $h;
$newW = $w * ($newH / $h);
}
$newIm = imagecreatetruecolor($width,$height);//$newW, $newH);
imagealphablending($newIm, false);
$colorTransparent = imagecolorallocatealpha($newIm, 255, 255, 255, 127);
imagefill($newIm, 0, 0, $colorTransparent);
imagesavealpha($newIm, true);
imagecopyresampled($newIm, $this->im, (($width-$newW)/2), (($height-$newH)/2), 0, 0, $newW, $newH, $w, $h);
imagedestroy($this->im);
$this->im = $newIm;
}
return $this;
}
public function saveToFile($imagePath) {
if(file_exists($imagePath) && !is_writable($imagePath)) throw new Exception("$imagePath is not writable!");
if(osc_use_imagick()) {
$this->im->setImageFileName($imagePath);
$this->im->writeImage($imagePath);
} else {
imagejpeg($this->im, $imagePath);
}
}
public function show() {
header('Content-Disposition: Attachment;filename=image.jpg');
header('Content-type: image/jpg');
if(osc_use_imagick()) {
} else {
imagepng($this->im);
}
}
}
?>
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