--- /dev/null
+<?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 {
+
+ protected $image = null; // Imagick Object
+
+ function __destruct() {
+ if ( $this->image ) {
+ // 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
+ * @access public
+ *
+ * @return boolean
+ */
+ public static function test( $args = array() ) {
+
+ // First, test Imagick's extension and classes.
+ if ( ! extension_loaded( 'imagick' ) || ! class_exists( 'Imagick' ) || ! class_exists( 'ImagickPixel' ) )
+ 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',
+ 'scaleimage',
+ 'cropimage',
+ 'rotateimage',
+ 'flipimage',
+ 'flopimage',
+ );
+
+ // Now, test for deep requirements within Imagick.
+ if ( ! defined( 'imagick::COMPRESSION_JPEG' ) )
+ return false;
+
+ if ( array_diff( $required_methods, get_class_methods( 'Imagick' ) ) )
+ return false;
+
+ return true;
+ }
+
+ /**
+ * Checks to see if editor supports the mime-type specified.
+ *
+ * @since 3.5.0
+ * @access public
+ *
+ * @param string $mime_type
+ * @return boolean
+ */
+ public static function supports_mime_type( $mime_type ) {
+ $imagick_extension = strtoupper( self::get_extension( $mime_type ) );
+
+ if ( ! $imagick_extension )
+ return false;
+
+ // setIteratorIndex is optional unless mime is an animated format.
+ // Here, we just say no if you are missing it and aren't loading a jpeg.
+ if ( ! method_exists( 'Imagick', 'setIteratorIndex' ) && $mime_type != 'image/jpeg' )
+ return false;
+
+ try {
+ return ( (bool) Imagick::queryFormats( $imagick_extension ) );
+ }
+ catch ( Exception $e ) {
+ return false;
+ }
+ }
+
+ /**
+ * Loads image from $this->file into new Imagick Object.
+ *
+ * @since 3.5.0
+ * @access protected
+ *
+ * @return boolean|WP_Error True if loaded; WP_Error on failure.
+ */
+ public function load() {
+ if ( $this->image )
+ return true;
+
+ if ( ! is_file( $this->file ) && ! preg_match( '|^https?://|', $this->file ) )
+ return new WP_Error( 'error_loading_image', __('File doesn’t exist?'), $this->file );
+
+ // Even though Imagick uses less PHP memory than GD, set higher limit for users that have low PHP.ini limits
+ @ini_set( 'memory_limit', apply_filters( 'image_memory_limit', WP_MAX_MEMORY_LIMIT ) );
+
+ try {
+ $this->image = new Imagick( $this->file );
+
+ if( ! $this->image->valid() )
+ return new WP_Error( 'invalid_image', __('File is not an image.'), $this->file);
+
+ // Select the first frame to handle animated images properly
+ if ( is_callable( array( $this->image, 'setIteratorIndex' ) ) )
+ $this->image->setIteratorIndex(0);
+
+ $this->mime_type = $this->get_mime_type( $this->image->getImageFormat() );
+ }
+ catch ( Exception $e ) {
+ return new WP_Error( 'invalid_image', $e->getMessage(), $this->file );
+ }
+
+ $updated_size = $this->update_size();
+ if ( is_wp_error( $updated_size ) )
+ return $updated_size;
+
+ return $this->set_quality();
+ }
+
+ /**
+ * Sets Image Compression quality on a 1-100% scale.
+ *
+ * @since 3.5.0
+ * @access public
+ *
+ * @param int $quality Compression Quality. Range: [1,100]
+ * @return boolean|WP_Error
+ */
+ public function set_quality( $quality = null ) {
+ if ( !$quality )
+ $quality = $this->quality;
+
+ try {
+ if( 'image/jpeg' == $this->mime_type ) {
+ $this->image->setImageCompressionQuality( apply_filters( 'jpeg_quality', $quality, 'image_resize' ) );
+ $this->image->setImageCompression( imagick::COMPRESSION_JPEG );
+ }
+ else {
+ $this->image->setImageCompressionQuality( $quality );
+ }
+ }
+ catch ( Exception $e ) {
+ return new WP_Error( 'image_quality_error', $e->getMessage() );
+ }
+
+ return parent::set_quality( $quality );
+ }
+
+ /**
+ * Sets or updates current image size.
+ *
+ * @since 3.5.0
+ * @access protected
+ *
+ * @param int $width
+ * @param int $height
+ */
+ protected function update_size( $width = null, $height = null ) {
+ $size = null;
+ if ( !$width || !$height ) {
+ try {
+ $size = $this->image->getImageGeometry();
+ }
+ catch ( Exception $e ) {
+ return new WP_Error( 'invalid_image', __('Could not read image size'), $this->file );
+ }
+ }
+
+ if ( ! $width )
+ $width = $size['width'];
+
+ if ( ! $height )
+ $height = $size['height'];
+
+ return parent::update_size( $width, $height );
+ }
+
+ /**
+ * Resizes current image.
+ *
+ * @since 3.5.0
+ * @access public
+ *
+ * @param int $max_w
+ * @param int $max_h
+ * @param boolean $crop
+ * @return boolean|WP_Error
+ */
+ public function resize( $max_w, $max_h, $crop = false ) {
+ if ( ( $this->size['width'] == $max_w ) && ( $this->size['height'] == $max_h ) )
+ return true;
+
+ $dims = image_resize_dimensions( $this->size['width'], $this->size['height'], $max_w, $max_h, $crop );
+ if ( ! $dims )
+ return new WP_Error( 'error_getting_dimensions', __('Could not calculate resized image dimensions') );
+ list( $dst_x, $dst_y, $src_x, $src_y, $dst_w, $dst_h, $src_w, $src_h ) = $dims;
+
+ if ( $crop ) {
+ return $this->crop( $src_x, $src_y, $src_w, $src_h, $dst_w, $dst_h );
+ }
+
+ try {
+ /**
+ * @TODO: Thumbnail is more efficient, given a newer version of Imagemagick.
+ * $this->image->thumbnailImage( $dst_w, $dst_h );
+ */
+ $this->image->scaleImage( $dst_w, $dst_h );
+ }
+ catch ( Exception $e ) {
+ return new WP_Error( 'image_resize_error', $e->getMessage() );
+ }
+
+ return $this->update_size( $dst_w, $dst_h );
+ }
+
+ /**
+ * Processes current image and saves to disk
+ * multiple sizes from single source.
+ *
+ * @since 3.5.0
+ * @access public
+ *
+ * @param array $sizes { {'width'=>int, 'height'=>int, 'crop'=>bool}, ... }
+ * @return array
+ */
+ public function multi_resize( $sizes ) {
+ $metadata = array();
+ $orig_size = $this->size;
+ $orig_image = $this->image->getImage();
+
+ foreach ( $sizes as $size => $size_data ) {
+ if ( ! $this->image )
+ $this->image = $orig_image->getImage();
+
+ $resize_result = $this->resize( $size_data['width'], $size_data['height'], $size_data['crop'] );
+
+ if( ! is_wp_error( $resize_result ) ) {
+ $resized = $this->_save( $this->image );
+
+ $this->image->clear();
+ $this->image->destroy();
+ $this->image = null;
+
+ if ( ! is_wp_error( $resized ) && $resized ) {
+ unset( $resized['path'] );
+ $metadata[$size] = $resized;
+ }
+ }
+
+ $this->size = $orig_size;
+ }
+
+ $this->image = $orig_image;
+
+ return $metadata;
+ }
+
+ /**
+ * Crops Image.
+ *
+ * @since 3.5.0
+ * @access public
+ *
+ * @param string|int $src The source file or Attachment ID.
+ * @param int $src_x The start x position to crop from.
+ * @param int $src_y The start y position to crop from.
+ * @param int $src_w The width to crop.
+ * @param int $src_h The height to crop.
+ * @param int $dst_w Optional. The destination width.
+ * @param int $dst_h Optional. The destination height.
+ * @param boolean $src_abs Optional. If the source crop points are absolute.
+ * @return boolean|WP_Error
+ */
+ public function crop( $src_x, $src_y, $src_w, $src_h, $dst_w = null, $dst_h = null, $src_abs = false ) {
+ if ( $src_abs ) {
+ $src_w -= $src_x;
+ $src_h -= $src_y;
+ }
+
+ try {
+ $this->image->cropImage( $src_w, $src_h, $src_x, $src_y );
+ $this->image->setImagePage( $src_w, $src_h, 0, 0);
+
+ if ( $dst_w || $dst_h ) {
+ // If destination width/height isn't specified, use same as
+ // width/height from source.
+ if ( ! $dst_w )
+ $dst_w = $src_w;
+ if ( ! $dst_h )
+ $dst_h = $src_h;
+
+ $this->image->scaleImage( $dst_w, $dst_h );
+ return $this->update_size();
+ }
+ }
+ catch ( Exception $e ) {
+ return new WP_Error( 'image_crop_error', $e->getMessage() );
+ }
+ return $this->update_size();
+ }
+
+ /**
+ * Rotates current image counter-clockwise by $angle.
+ *
+ * @since 3.5.0
+ * @access public
+ *
+ * @param float $angle
+ * @return boolean|WP_Error
+ */
+ public function rotate( $angle ) {
+ /**
+ * $angle is 360-$angle because Imagick rotates clockwise
+ * (GD rotates counter-clockwise)
+ */
+ try {
+ $this->image->rotateImage( new ImagickPixel('none'), 360-$angle );
+ }
+ catch ( Exception $e ) {
+ return new WP_Error( 'image_rotate_error', $e->getMessage() );
+ }
+ return $this->update_size();
+ }
+
+ /**
+ * Flips current image.
+ *
+ * @since 3.5.0
+ * @access public
+ *
+ * @param boolean $horz Horizontal Flip
+ * @param boolean $vert Vertical Flip
+ * @returns boolean|WP_Error
+ */
+ public function flip( $horz, $vert ) {
+ try {
+ if ( $horz )
+ $this->image->flipImage();
+
+ if ( $vert )
+ $this->image->flopImage();
+ }
+ catch ( Exception $e ) {
+ return new WP_Error( 'image_flip_error', $e->getMessage() );
+ }
+ return true;
+ }
+
+ /**
+ * Saves current image to file.
+ *
+ * @since 3.5.0
+ * @access public
+ *
+ * @param string $destfilename
+ * @param string $mime_type
+ * @return array|WP_Error {'path'=>string, 'file'=>string, 'width'=>int, 'height'=>int, 'mime-type'=>string}
+ */
+ public function save( $destfilename = null, $mime_type = null ) {
+ $saved = $this->_save( $this->image, $destfilename, $mime_type );
+
+ if ( ! is_wp_error( $saved ) ) {
+ $this->file = $saved['path'];
+ $this->mime_type = $saved['mime-type'];
+
+ try {
+ $this->image->setImageFormat( strtoupper( $this->get_extension( $this->mime_type ) ) );
+ }
+ catch ( Exception $e ) {
+ return new WP_Error( 'image_save_error', $e->getMessage(), $this->file );
+ }
+ }
+
+ return $saved;
+ }
+
+ protected function _save( $image, $filename = null, $mime_type = null ) {
+ list( $filename, $extension, $mime_type ) = $this->get_output_format( $filename, $mime_type );
+
+ if ( ! $filename )
+ $filename = $this->generate_filename( null, null, $extension );
+
+ try {
+ // Store initial Format
+ $orig_format = $this->image->getImageFormat();
+
+ $this->image->setImageFormat( strtoupper( $this->get_extension( $mime_type ) ) );
+ $this->make_image( $filename, array( $image, 'writeImage' ), array( $filename ) );
+
+ // Reset original Format
+ $this->image->setImageFormat( $orig_format );
+ }
+ catch ( Exception $e ) {
+ return new WP_Error( 'image_save_error', $e->getMessage(), $filename );
+ }
+
+ // Set correct file permissions
+ $stat = stat( dirname( $filename ) );
+ $perms = $stat['mode'] & 0000666; //same permissions as parent folder, strip off the executable bits
+ @ chmod( $filename, $perms );
+
+ return array(
+ 'path' => $filename,
+ 'file' => wp_basename( apply_filters( 'image_make_intermediate_size', $filename ) ),
+ 'width' => $this->size['width'],
+ 'height' => $this->size['height'],
+ 'mime-type' => $mime_type,
+ );
+ }
+
+ /**
+ * Streams current image to browser.
+ *
+ * @since 3.5.0
+ * @access public
+ *
+ * @param string $mime_type
+ * @return boolean|WP_Error
+ */
+ public function stream( $mime_type = null ) {
+ list( $filename, $extension, $mime_type ) = $this->get_output_format( null, $mime_type );
+
+ try {
+ // Temporarily change format for stream
+ $this->image->setImageFormat( strtoupper( $extension ) );
+
+ // Output stream of image content
+ header( "Content-Type: $mime_type" );
+ print $this->image->getImageBlob();
+
+ // Reset Image to original Format
+ $this->image->setImageFormat( $this->get_extension( $this->mime_type ) );
+ }
+ catch ( Exception $e ) {
+ return new WP_Error( 'image_stream_error', $e->getMessage() );
+ }
+
+ return true;
+ }
+}
scripts.mit.edu / autoinstallsdev / wordpress.git / blobdiff