class-wp-image-editor-imagick.php

<?php
/**
 * WordPress Imagick Image Editor
 *
 * @package WordPress
 * @subpackage Image_Editor
 */

/**
 * WordPress Image Editor Class for Image Manipulation through Imagick PHP Module
 *
 * @since 3.5.0
 * @package WordPress
 * @subpackage Image_Editor
 * @uses WP_Image_Editor Extends class
 */
class WP_Image_Editor_Imagick extends WP_Image_Editor {
	/**
	 * Imagick object.
	 *
	 * @access protected
	 * @var Imagick
	 */
	protected $image;

	public function __destruct() {
		if ( $this->image instanceof Imagick ) {
			// we don't need the original in memory anymore
			$this->image->clear();
			$this->image->destroy();
		}
	}

	/**
	 * Checks to see if current environment supports Imagick.
	 *
	 * We require Imagick 2.2.0 or greater, based on whether the queryFormats()
	 * method can be called statically.
	 *
	 * @since 3.5.0
	 *
	 * @static
	 * @access public
	 *
	 * @param array $args
	 * @return bool
	 */
	public static function test( $args = array() ) {

		// First, test Imagick's extension and classes.
		if ( ! extension_loaded( 'imagick' ) || ! class_exists( 'Imagick', false ) || ! class_exists( 'ImagickPixel', false ) )
			return false;

		if ( version_compare( phpversion( 'imagick' ), '2.2.0', '<' ) )
			return false;

		$required_methods = array(
			'clear',
			'destroy',
			'valid',
			'getimage',
			'writeimage',
			'getimageblob',
			'getimagegeometry',
			'getimageformat',
			'setimageformat',
			'setimagecompression',
			'setimagecompressionquality',
			'setimagepage',
			'setoption',