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<?php |
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/** |
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* @license LGPLv3, https://opensource.org/licenses/LGPL-3.0 |
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* @copyright Aimeos (aimeos.org), 2017-2022 |
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* @package MW |
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* @subpackage Media |
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*/ |
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namespace Aimeos\MW\Media\Image; |
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/** |
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* Default image class using ImageMagick. |
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* |
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* @package MW |
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* @subpackage Media |
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*/ |
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class Imagick |
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extends \Aimeos\MW\Media\Image\Base |
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implements \Aimeos\MW\Media\Image\Iface |
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{ |
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private $image; |
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private $options; |
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private static $wmimg; |
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private static $wmpath; |
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private static $wmimages; |
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/** |
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* Initializes the new image object. |
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* |
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* @param string $content File content |
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* @param string $mimetype Mime type of the media data |
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* @param array $options Associative list of configuration options |
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* @throws \Aimeos\MW\Media\Exception If image couldn't be retrieved from the given file name |
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*/ |
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public function __construct( string $content, string $mimetype, array $options ) |
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{ |
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parent::__construct( $mimetype ); |
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try |
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{ |
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$this->image = new \Imagick(); |
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$this->image->readImageBlob( $content ); |
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if( in_array( $mimetype, ['image/gif', 'image/png', 'image/webp'] ) ) |
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{ |
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$this->image->setImageAlphaChannel( \Imagick::ALPHACHANNEL_ACTIVATE ); |
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$this->image->setImageBackgroundColor( $options['image']['background'] ?? 'transparent' ); |
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} |
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else |
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{ |
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$this->image->setImageBackgroundColor( $options['image']['background'] ?? '#ffffff' ); |
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} |
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if( isset( $options['image']['watermark'] ) && self::$wmpath !== $options['image']['watermark'] ) |
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{ |
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self::$wmimg = new \Imagick( realpath( $options['image']['watermark'] ) ); |
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self::$wmpath = $options['image']['watermark']; |
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self::$wmimages = []; |
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} |
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} |
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catch( \Exception $e ) |
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{ |
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throw new \Aimeos\MW\Media\Exception( $e->getMessage() ); |
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} |
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$this->options = $options; |
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} |
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/** |
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* Cleans up |
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*/ |
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public function __destruct() |
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{ |
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if( $this->image ) { |
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$this->image->clear(); |
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} |
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} |
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/** |
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* Clone resources |
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*/ |
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public function __clone() |
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{ |
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$this->image = clone $this->image; |
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} |
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/** |
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* Returns the height of the image |
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* |
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* @return int Height in pixel |
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*/ |
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public function getHeight() : int |
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{ |
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return $this->image->getImageHeight(); |
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} |
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/** |
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* Returns the width of the image |
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* |
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* @return int Width in pixel |
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*/ |
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public function getWidth() : int |
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{ |
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return $this->image->getImageWidth(); |
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} |
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/** |
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* Stores the media data at the given file name. |
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* |
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* @param string|null $filename File name to save the data into or null to return the data |
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* @param string|null $mimetype Mime type to save the content as or null to leave the mime type unchanged |
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* @return string|null File content if file name is null or null if data is saved to the given file name |
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* @throws \Aimeos\MW\Media\Exception If image couldn't be saved to the given file name |
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*/ |
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public function save( string $filename = null, string $mimetype = null ) : ?string |
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{ |
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if( empty( $mimetype ) ) { |
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$mimetype = $this->getMimeType(); |
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} |
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$quality = 90; |
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$mime = explode( '/', $mimetype ); |
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if( isset( $this->options['image']['quality'] ) ) { |
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$quality = max( min( (int) $this->options['image']['quality'], 100 ), 0 ); |
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} |
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try |
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{ |
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$this->image->setImageFormat( $mime[1] ?? 'jpeg' ); |
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$this->image->setImageCompressionQuality( $quality ); |
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if( $filename === null ) { |
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return $this->image->getImagesBlob(); |
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} |
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$this->image->writeImage( $filename ); |
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} |
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catch( \Exception $e ) |
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{ |
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throw new \Aimeos\MW\Media\Exception( $e->getMessage() ); |
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} |
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return null; |
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} |
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/** |
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* Scales the image to the given width and height. |
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* |
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* @param int|null $width New width of the image or null for automatic calculation |
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* @param int|null $height New height of the image or null for automatic calculation |
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* @param int $fit "0" keeps image ratio, "1" adds padding while "2" crops image to enforce image size |
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* @return \Aimeos\MW\Media\Image\Iface Self object for method chaining |
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*/ |
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public function scale( int $width = null, int $height = null, int $fit = 0 ) : \Aimeos\MW\Media\Image\Iface |
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{ |
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try |
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{ |
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$newMedia = clone $this; |
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if( $fit === 2 && $width && $height ) |
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{ |
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$newMedia->image->cropThumbnailImage( (int) $width, (int) $height ); |
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// see https://www.php.net/manual/en/imagick.cropthumbnailimage.php#106710 |
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$newMedia->image->setImagePage( 0, 0, 0, 0 ); |
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} |
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elseif( $fit === 1 && $width && $height ) |
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{ |
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$w = ( $width - $newMedia->image->getImageWidth() ) / 2; |
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$h = ( $height - $newMedia->image->getImageHeight() ) / 2; |
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$newMedia->image->extentImage( $width, $height, (int) -$w, (int) -$h ); |
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} |
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else |
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{ |
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$w = $this->image->getImageWidth(); |
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$h = $this->image->getImageHeight(); |
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list( $newWidth, $newHeight ) = $this->getSizeFitted( $w, $h, $width, $height ); |
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if( $w > $newWidth || $h > $newHeight ) { |
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$newMedia->image->resizeImage( $newWidth, $newHeight, \Imagick::FILTER_CUBIC, 0.8 ); |
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} |
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} |
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return $this->watermark( $newMedia ); |
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} |
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catch( \Exception $e ) |
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{ |
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throw new \Aimeos\MW\Media\Exception( $e->getMessage() ); |
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} |
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} |
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/** |
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* Returns the supported image mime types |
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* |
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* @param array|string $mimetypes Mime type or list of mime types to check against |
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* @return array List of supported mime types |
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*/ |
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public static function supports( $mimetypes = [] ) : array |
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{ |
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$types = [ |
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'BMP' => 'image/bmp', 'GIF' => 'image/gif', 'JPEG' => 'image/jpeg', |
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'PNG' => 'image/png', 'TIFF' => 'image/tiff', 'WEBP' => 'image/webp' |
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]; |
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$list = []; |
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$supported = \Imagick::queryFormats(); |
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foreach( $types as $key => $type ) |
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{ |
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if( in_array( $key, $supported ) ) { |
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$list[] = $type; |
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} |
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} |
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return empty( $mimetypes ) ? $list : array_intersect( $list, (array) $mimetypes ); |
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} |
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/** |
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* Adds the configured water mark to the image |
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* |
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* @param \Aimeos\MW\Media\Image\Iface $media Media object the watermark should be applied to |
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* @return \Aimeos\MW\Media\Image\Iface Media object with watermark |
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*/ |
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protected function watermark( \Aimeos\MW\Media\Image\Iface $media ) |
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{ |
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if( self::$wmimg === null ) { |
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return $media; |
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} |
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$wh = self::$wmimg->getImageHeight(); |
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$ww = self::$wmimg->getImageWidth(); |
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if( $ww > $media->getWidth() ) |
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{ |
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$wh = $media->getWidth() / $ww * $wh; |
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$ww = $media->getWidth(); |
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} |
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if( $wh > $media->getHeight() ) |
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{ |
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$ww = $media->getHeight() / $wh * $ww; |
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$wh = $media->getHeight(); |
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} |
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$ww = round( $ww ); |
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$wh = round( $wh ); |
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$dx = round( ( $media->getWidth() - $ww ) / 2 ); |
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$dy = round( ( $media->getHeight() - $wh ) / 2 ); |
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if( !isset( self::$wmimages[$ww . 'x' . $wh] ) ) |
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{ |
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$wmimage = clone self::$wmimg; |
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$wmimage->resizeImage( $ww, $wh, \Imagick::FILTER_CUBIC, 0.8 ); |
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self::$wmimages[$ww . 'x' . $wh] = $wmimage; |
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} |
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else |
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{ |
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$wmimage = self::$wmimages[$ww . 'x' . $wh]; |
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} |
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$wmimage->setImageColorspace( $media->image->getImageColorspace() ); |
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$media->image->compositeImage( $wmimage, \Imagick::COMPOSITE_OVER, $dx, $dy ); |
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return $media; |
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} |
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} |
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In PHP, under loose comparison (like
==, or!=, orswitchconditions), values of different types might be equal.For
integervalues, zero is a special case, in particular the following results might be unexpected: