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<?php

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/**

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* WordPress Imagick Image Editor

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* @package WordPress

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* @subpackage Image_Editor

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/**

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* WordPress Image Editor Class for Image Manipulation through Imagick PHP Module

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* @since 3.5.0

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* @see WP_Image_Editor

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class WP_Image_Editor_Imagick extends WP_Image_Editor {

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/**

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* Imagick object.

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* @var Imagick

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protected $image;

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public function __destruct() {

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if ( $this->image instanceof Imagick ) {

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// We don't need the original in memory anymore.

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$this->image->clear();

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$this->image->destroy();

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}

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}

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/**

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* Checks to see if current environment supports Imagick.

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* We require Imagick 2.2.0 or greater, based on whether the queryFormats()

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* method can be called statically.

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* @since 3.5.0

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* @param array $args

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* @return bool

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public static function test( $args = array() ) {

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// First, test Imagick's extension and classes.

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if ( ! extension_loaded( 'imagick' ) || ! class_exists( 'Imagick', false ) || ! class_exists( 'ImagickPixel', false ) ) {

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return false;

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}

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if ( version_compare( phpversion( 'imagick' ), '2.2.0', '<' ) ) {

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return false;

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}

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$required_methods = array(

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'clear',

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'destroy',

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'valid',

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'getimage',

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'writeimage',

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'getimageblob',

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'getimagegeometry',

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'getimageformat',

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'setimageformat',

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'setimagecompression',

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'setimagecompressionquality',

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'setimagepage',

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'setoption',

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'scaleimage',

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'cropimage',

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'rotateimage',

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'flipimage',

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'flopimage',

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'readimage',

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'readimageblob',

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);

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// Now, test for deep requirements within Imagick.

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if ( ! defined( 'imagick::COMPRESSION_JPEG' ) ) {

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return false;

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}

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$class_methods = array_map( 'strtolower', get_class_methods( 'Imagick' ) );

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if ( array_diff( $required_methods, $class_methods ) ) {

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return false;

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}

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return true;

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}

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/**

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* Checks to see if editor supports the mime-type specified.

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* @since 3.5.0

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* @param string $mime_type

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* @return bool

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public static function supports_mime_type( $mime_type ) {

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$imagick_extension = strtoupper( self::get_extension( $mime_type ) );

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if ( ! $imagick_extension ) {

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return false;

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}

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* setIteratorIndex is optional unless mime is an animated format.

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* Here, we just say no if you are missing it and aren't loading a jpeg.

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if ( ! method_exists( 'Imagick', 'setIteratorIndex' ) && 'image/jpeg' !== $mime_type ) {

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return false;

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}

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try {

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// phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged

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return ( (bool) @Imagick::queryFormats( $imagick_extension ) );

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} catch ( Exception $e ) {

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return false;

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}

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}

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/**

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* Loads image from $this->file into new Imagick Object.

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* @since 3.5.0

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* @return true|WP_Error True if loaded; WP_Error on failure.

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public function load() {

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if ( $this->image instanceof Imagick ) {

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return true;

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}

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if ( ! is_file( $this->file ) && ! wp_is_stream( $this->file ) ) {

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return new WP_Error( 'error_loading_image', __( 'File does not exist?' ), $this->file );

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}

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* Even though Imagick uses less PHP memory than GD, set higher limit

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* for users that have low PHP.ini limits.

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wp_raise_memory_limit( 'image' );

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try {

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$this->image = new Imagick();

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$file_extension = strtolower( pathinfo( $this->file, PATHINFO_EXTENSION ) );

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if ( 'pdf' === $file_extension ) {

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$pdf_loaded = $this->pdf_load_source();

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if ( is_wp_error( $pdf_loaded ) ) {

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return $pdf_loaded;

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}

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} else {

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if ( wp_is_stream( $this->file ) ) {

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// Due to reports of issues with streams with `Imagick::readImageFile()`, uses `Imagick::readImageBlob()` instead.

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$this->image->readImageBlob( file_get_contents( $this->file ), $this->file );

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} else {

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$this->image->readImage( $this->file );

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}

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}

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if ( ! $this->image->valid() ) {

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return new WP_Error( 'invalid_image', __( 'File is not an image.' ), $this->file );

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}

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// Select the first frame to handle animated images properly.

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if ( is_callable( array( $this->image, 'setIteratorIndex' ) ) ) {

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$this->image->setIteratorIndex( 0 );

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}

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if ( 'pdf' === $file_extension ) {

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$this->remove_pdf_alpha_channel();

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}

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$this->mime_type = $this->get_mime_type( $this->image->getImageFormat() );

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} catch ( Exception $e ) {

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return new WP_Error( 'invalid_image', $e->getMessage(), $this->file );

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}

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$updated_size = $this->update_size();

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if ( is_wp_error( $updated_size ) ) {

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return $updated_size;

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}

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return $this->set_quality();

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}

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/**

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* Sets Image Compression quality on a 1-100% scale.

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* @since 3.5.0

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* @param int $quality Compression Quality. Range: [1,100]

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* @return true|WP_Error True if set successfully; WP_Error on failure.

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public function set_quality( $quality = null ) {

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$quality_result = parent::set_quality( $quality );

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if ( is_wp_error( $quality_result ) ) {

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return $quality_result;

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} else {

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$quality = $this->get_quality();

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}

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try {

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switch ( $this->mime_type ) {

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case 'image/jpeg':

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$this->image->setImageCompressionQuality( $quality );

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$this->image->setImageCompression( imagick::COMPRESSION_JPEG );

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break;

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case 'image/webp':

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$webp_info = wp_get_webp_info( $this->file );

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if ( 'lossless' === $webp_info['type'] ) {

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// Use WebP lossless settings.

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$this->image->setImageCompressionQuality( 100 );

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$this->image->setOption( 'webp:lossless', 'true' );

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} else {

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$this->image->setImageCompressionQuality( $quality );

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}

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break;

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case 'image/avif':

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default:

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$this->image->setImageCompressionQuality( $quality );

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}

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} catch ( Exception $e ) {

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return new WP_Error( 'image_quality_error', $e->getMessage() );

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}

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return true;

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}

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/**

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* Sets or updates current image size.

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* @since 3.5.0

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* @param int $width

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* @param int $height

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* @return true|WP_Error

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protected function update_size( $width = null, $height = null ) {

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$size = null;

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if ( ! $width || ! $height ) {

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try {

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$size = $this->image->getImageGeometry();

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} catch ( Exception $e ) {

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return new WP_Error( 'invalid_image', __( 'Could not read image size.' ), $this->file );

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}

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}

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if ( ! $width ) {

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$width = $size['width'];

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}

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if ( ! $height ) {

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$height = $size['height'];

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}

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* If we still don't have the image size, fall back to `wp_getimagesize`. This ensures AVIF images

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* are properly sized without affecting previous `getImageGeometry` behavior.

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if ( ( ! $width || ! $height ) && 'image/avif' === $this->mime_type ) {

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$size = wp_getimagesize( $this->file );

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$width = $size[0];

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$height = $size[1];

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}

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return parent::update_size( $width, $height );

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}

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/**

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* Sets Imagick time limit.

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* Depending on configuration, Imagick processing may take time.

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* Multiple problems exist if PHP times out before ImageMagick completed:

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* 1. Temporary files aren't cleaned by ImageMagick garbage collection.

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* 2. No clear error is provided.

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* 3. The cause of such timeout can be hard to pinpoint.

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* This function, which is expected to be run before heavy image routines, resolves

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* point 1 above by aligning Imagick's timeout with PHP's timeout, assuming it is set.

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* However seems it introduces more problems than it fixes,

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* see https://core.trac.wordpress.org/ticket/58202.

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* Note:

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* - Imagick resource exhaustion does not issue catchable exceptions (yet).

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* See https://github.com/Imagick/imagick/issues/333.

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* - The resource limit is not saved/restored. It applies to subsequent

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* image operations within the time of the HTTP request.

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* @since 6.2.0

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* @since 6.3.0 This method was deprecated.

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* @return int|null The new limit on success, null on failure.

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public static function set_imagick_time_limit() {

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_deprecated_function( __METHOD__, '6.3.0' );

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if ( ! defined( 'Imagick::RESOURCETYPE_TIME' ) ) {

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return null;

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}

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// Returns PHP_FLOAT_MAX if unset.

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$imagick_timeout = Imagick::getResourceLimit( Imagick::RESOURCETYPE_TIME );

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// Convert to an integer, keeping in mind that: 0 === (int) PHP_FLOAT_MAX.

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$imagick_timeout = $imagick_timeout > PHP_INT_MAX ? PHP_INT_MAX : (int) $imagick_timeout;

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$php_timeout = (int) ini_get( 'max_execution_time' );

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if ( $php_timeout > 1 && $php_timeout < $imagick_timeout ) {

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$limit = (float) 0.8 * $php_timeout;

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Imagick::setResourceLimit( Imagick::RESOURCETYPE_TIME, $limit );

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return $limit;

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}

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}

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/**

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* Resizes current image.

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* At minimum, either a height or width must be provided.

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* If one of the two is set to null, the resize will

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* maintain aspect ratio according to the provided dimension.

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* @since 3.5.0

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* @param int|null $max_w Image width.

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* @param int|null $max_h Image height.

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* @param bool|array $crop {

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* Optional. Image cropping behavior. If false, the image will be scaled (default).

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* If true, image will be cropped to the specified dimensions using center positions.

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* If an array, the image will be cropped using the array to specify the crop location:

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* @type string $0 The x crop position. Accepts 'left' 'center', or 'right'.

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* @type string $1 The y crop position. Accepts 'top', 'center', or 'bottom'.

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* }

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* @return true|WP_Error

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public function resize( $max_w, $max_h, $crop = false ) {

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if ( ( $this->size['width'] === $max_w ) && ( $this->size['height'] === $max_h ) ) {

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return true;

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}

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$dims = image_resize_dimensions( $this->size['width'], $this->size['height'], $max_w, $max_h, $crop );

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if ( ! $dims ) {

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return new WP_Error( 'error_getting_dimensions', __( 'Could not calculate resized image dimensions' ) );

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}

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list( $dst_x, $dst_y, $src_x, $src_y, $dst_w, $dst_h, $src_w, $src_h ) = $dims;

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if ( $crop ) {

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return $this->crop( $src_x, $src_y, $src_w, $src_h, $dst_w, $dst_h );

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}

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// Execute the resize.

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$thumb_result = $this->thumbnail_image( $dst_w, $dst_h );

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if ( is_wp_error( $thumb_result ) ) {

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return $thumb_result;

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}

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return $this->update_size( $dst_w, $dst_h );

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}

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/**

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* Efficiently resize the current image

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* This is a WordPress specific implementation of Imagick::thumbnailImage(),

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* which resizes an image to given dimensions and removes any associated profiles.

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* @since 4.5.0

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* @param int $dst_w The destination width.

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* @param int $dst_h The destination height.

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* @param string $filter_name Optional. The Imagick filter to use when resizing. Default 'FILTER_TRIANGLE'.

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* @param bool $strip_meta Optional. Strip all profiles, excluding color profiles, from the image. Default true.

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* @return void|WP_Error

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protected function thumbnail_image( $dst_w, $dst_h, $filter_name = 'FILTER_TRIANGLE', $strip_meta = true ) {

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$allowed_filters = array(

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'FILTER_POINT',

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'FILTER_BOX',

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'FILTER_TRIANGLE',

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'FILTER_HERMITE',

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'FILTER_HANNING',

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'FILTER_HAMMING',

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'FILTER_BLACKMAN',

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'FILTER_GAUSSIAN',

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'FILTER_QUADRATIC',

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'FILTER_CUBIC',

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'FILTER_CATROM',

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'FILTER_MITCHELL',

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'FILTER_LANCZOS',

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'FILTER_BESSEL',

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'FILTER_SINC',

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);

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/**

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* Set the filter value if '$filter_name' name is in the allowed list and the related

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* Imagick constant is defined or fall back to the default filter.

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if ( in_array( $filter_name, $allowed_filters, true ) && defined( 'Imagick::' . $filter_name ) ) {

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$filter = constant( 'Imagick::' . $filter_name );

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} else {

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$filter = defined( 'Imagick::FILTER_TRIANGLE' ) ? Imagick::FILTER_TRIANGLE : false;

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}

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/**

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* Filters whether to strip metadata from images when they're resized.

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* This filter only applies when resizing using the Imagick editor since GD

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* always strips profiles by default.

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* @since 4.5.0

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* @param bool $strip_meta Whether to strip image metadata during resizing. Default true.

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if ( apply_filters( 'image_strip_meta', $strip_meta ) ) {

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$this->strip_meta(); // Fail silently if not supported.

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}

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try {

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* To be more efficient, resample large images to 5x the destination size before resizing

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* whenever the output size is less that 1/3 of the original image size (1/3^2 ~= .111),

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* unless we would be resampling to a scale smaller than 128x128.

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if ( is_callable( array( $this->image, 'sampleImage' ) ) ) {

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$resize_ratio = ( $dst_w / $this->size['width'] ) * ( $dst_h / $this->size['height'] );

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$sample_factor = 5;

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if ( $resize_ratio < .111 && ( $dst_w * $sample_factor > 128 && $dst_h * $sample_factor > 128 ) ) {

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$this->image->sampleImage( $dst_w * $sample_factor, $dst_h * $sample_factor );

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}

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}

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* Use resizeImage() when it's available and a valid filter value is set.

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* Otherwise, fall back to the scaleImage() method for resizing, which

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* results in better image quality over resizeImage() with default filter

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* settings and retains backward compatibility with pre 4.5 functionality.

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if ( is_callable( array( $this->image, 'resizeImage' ) ) && $filter ) {

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$this->image->setOption( 'filter:support', '2.0' );

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$this->image->resizeImage( $dst_w, $dst_h, $filter, 1 );

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} else {

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$this->image->scaleImage( $dst_w, $dst_h );

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}

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// Set appropriate quality settings after resizing.

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if ( 'image/jpeg' === $this->mime_type ) {

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if ( is_callable( array( $this->image, 'unsharpMaskImage' ) ) ) {

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$this->image->unsharpMaskImage( 0.25, 0.25, 8, 0.065 );

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}

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$this->image->setOption( 'jpeg:fancy-upsampling', 'off' );

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}

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if ( 'image/png' === $this->mime_type ) {

[462] Fix | Delete

$this->image->setOption( 'png:compression-filter', '5' );

[463] Fix | Delete

$this->image->setOption( 'png:compression-level', '9' );

[464] Fix | Delete

$this->image->setOption( 'png:compression-strategy', '1' );

[465] Fix | Delete

$this->image->setOption( 'png:exclude-chunk', 'all' );

[466] Fix | Delete

}

[467] Fix | Delete

[468] Fix | Delete

[469] Fix | Delete

* If alpha channel is not defined, set it opaque.

[470] Fix | Delete

[471] Fix | Delete

* Note that Imagick::getImageAlphaChannel() is only available if Imagick

[472] Fix | Delete

* has been compiled against ImageMagick version 6.4.0 or newer.

[473] Fix | Delete

[474] Fix | Delete

if ( is_callable( array( $this->image, 'getImageAlphaChannel' ) )

[475] Fix | Delete

&& is_callable( array( $this->image, 'setImageAlphaChannel' ) )

[476] Fix | Delete

&& defined( 'Imagick::ALPHACHANNEL_UNDEFINED' )

[477] Fix | Delete

&& defined( 'Imagick::ALPHACHANNEL_OPAQUE' )

[478] Fix | Delete

) {

[479] Fix | Delete

if ( $this->image->getImageAlphaChannel() === Imagick::ALPHACHANNEL_UNDEFINED ) {

[480] Fix | Delete

$this->image->setImageAlphaChannel( Imagick::ALPHACHANNEL_OPAQUE );

[481] Fix | Delete

}

[482] Fix | Delete

}

[483] Fix | Delete

[484] Fix | Delete

// Limit the bit depth of resized images to 8 bits per channel.

[485] Fix | Delete

if ( is_callable( array( $this->image, 'getImageDepth' ) ) && is_callable( array( $this->image, 'setImageDepth' ) ) ) {

[486] Fix | Delete

if ( 8 < $this->image->getImageDepth() ) {

[487] Fix | Delete

$this->image->setImageDepth( 8 );

[488] Fix | Delete

}

[489] Fix | Delete

}

[490] Fix | Delete

} catch ( Exception $e ) {

[491] Fix | Delete

return new WP_Error( 'image_resize_error', $e->getMessage() );

[492] Fix | Delete

}

[493] Fix | Delete

}

[494] Fix | Delete

[495] Fix | Delete

/**

[496] Fix | Delete

* Create multiple smaller images from a single source.

[497] Fix | Delete

[498] Fix | Delete

* Attempts to create all sub-sizes and returns the meta data at the end. This

[499] Fix | Delete

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