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<?php /** @file */
require_once('include/photo/photo_driver.php');
class photo_imagick extends photo_driver {
function supportedTypes() {
return array(
'image/jpeg' => 'jpg',
'image/png' => 'png',
'image/gif' => 'gif'
);
}
public function get_FormatsMap() {
return array(
'image/jpeg' => 'JPG',
'image/png' => 'PNG',
'image/gif' => 'GIF'
);
}
function load($data, $type) {
$this->valid = false;
$this->image = new Imagick();
$this->image->readImageBlob($data);
/**
* Setup the image to the format it will be saved to
*/
$map = $this->get_FormatsMap();
$format = $map[$type];
if($this->image) {
$this->image->setFormat($format);
// Always coalesce, if it is not a multi-frame image it won't hurt anyway
$this->image = $this->image->coalesceImages();
$this->valid = true;
$this->setDimensions();
/**
* setup the compression here, so we'll do it only once
*/
switch($this->getType()) {
case "image/png":
$quality = get_config('system','png_quality');
if((! $quality) || ($quality > 9))
$quality = PNG_QUALITY;
/**
* From http://www.imagemagick.org/script/command-line-options.php#quality:
*
* 'For the MNG and PNG image formats, the quality value sets
* the zlib compression level (quality / 10) and filter-type (quality % 10).
* The default PNG "quality" is 75, which means compression level 7 with adaptive PNG filtering,
* unless the image has a color map, in which case it means compression level 7 with no PNG filtering'
*/
$quality = $quality * 10;
$this->image->setCompressionQuality($quality);
break;
case "image/jpeg":
$quality = get_config('system','jpeg_quality');
if((! $quality) || ($quality > 100))
$quality = JPEG_QUALITY;
$this->image->setCompressionQuality($quality);
default:
break;
}
}
}
public function destroy() {
if($this->is_valid()) {
$this->image->clear();
$this->image->destroy();
}
}
public function setDimensions() {
$this->width = $this->image->getImageWidth();
$this->height = $this->image->getImageHeight();
}
public function getImage() {
if(!$this->is_valid())
return FALSE;
$this->image = $this->image->deconstructImages();
return $this->image;
}
public function doScaleImage($dest_width,$dest_height) {
/**
* If it is not animated, there will be only one iteration here,
* so don't bother checking
*/
// Don't forget to go back to the first frame
$this->image->setFirstIterator();
do {
$this->image->scaleImage($dest_width, $dest_height);
} while ($this->image->nextImage());
$this->setDimensions();
}
public function rotate($degrees) {
if(!$this->is_valid())
return FALSE;
$this->image->setFirstIterator();
do {
// ImageMagick rotates in the opposite direction of imagerotate()
$this->image->rotateImage(new ImagickPixel(), -$degrees);
} while ($this->image->nextImage());
$this->setDimensions();
}
public function flip($horiz = true, $vert = false) {
if(!$this->is_valid())
return FALSE;
$this->image->setFirstIterator();
do {
if($horiz) $this->image->flipImage();
if($vert) $this->image->flopImage();
} while ($this->image->nextImage());
$this->setDimensions(); // Shouldn't really be necessary
}
public function cropImage($max,$x,$y,$w,$h) {
if(!$this->is_valid())
return FALSE;
$this->image->setFirstIterator();
do {
$this->image->cropImage($w, $h, $x, $y);
/**
* We need to remove the canva,
* or the image is not resized to the crop:
* http://php.net/manual/en/imagick.cropimage.php#97232
*/
$this->image->setImagePage(0, 0, 0, 0);
} while ($this->image->nextImage());
$this->doScaleImage($max);
}
public function imageString() {
if(!$this->is_valid())
return FALSE;
/* Clean it */
$this->image = $this->image->deconstructImages();
return $this->image->getImagesBlob();
}
}
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