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<?php
namespace Zotlabs\Photo;
/**
* @brief ImageMagick photo driver.
*/
class PhotoImagick extends PhotoDriver {
public function supportedTypes() {
$ret = [
'image/jpeg' => 'jpg',
'image/png' => 'png',
'image/gif' => 'gif'
];
if(\Imagick::queryFormats("WEBP"))
$ret['image/webp'] = 'webp';
return $ret;
}
protected function load($data, $type) {
$this->valid = false;
$this->image = new \Imagick();
if(! $data)
return;
try {
$this->image->readImageBlob($data);
} catch(\Exception $e) {
logger('Imagick readImageBlob() exception:' . print_r($e, true));
return;
}
/*
* Setup the image to the format it will be saved to
*/
$map = $this->supportedTypes();
$format = strtoupper($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);
break;
case 'image/webp':
$quality = get_config('system', 'webp_quality');
if((! $quality) || ($quality > 100))
$quality = WEBP_QUALITY;
$this->image->setCompressionQuality($quality);
break;
default:
break;
}
}
}
protected function destroy() {
if($this->is_valid()) {
$this->image->clear();
$this->image->destroy();
}
}
protected function setDimensions() {
$this->width = $this->image->getImageWidth();
$this->height = $this->image->getImageHeight();
}
/**
* @brief Strips the image of all profiles and comments.
*
* Keep ICC profile for better colors.
*
* @see \Zotlabs\Photo\PhotoDriver::clearexif()
*/
public function clearexif() {
$profiles = $this->image->getImageProfiles('icc', true);
$this->image->stripImage();
if(! empty($profiles)) {
$this->image->profileImage('icc', $profiles['icc']);
}
}
/**
* @brief Return a \Imagick object of the current image.
*
* @see \Zotlabs\Photo\PhotoDriver::getImage()
*
* @return boolean|\Imagick
*/
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());
$this->setDimensions(); // Shouldn't really be necessary
}
public function cropImageRect($maxx, $maxy, $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 canvas,
* 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());
$this->doScaleImage($maxx, $maxy);
}
public function imageString() {
if(! $this->is_valid())
return false;
/* Clean it */
$this->image = $this->image->deconstructImages();
return $this->image->getImagesBlob();
}
}
|
