File Content: class-wp-image-editor.php <?php /** * Base WordPress Image Editor * * @package WordPress * @subpackage Image_Editor */ /** * Base image editor class from which implementations extend * * @since 3.5.0 */ abstract class WP_Image_Editor { protected $file = null; protected $size = null; protected $mime_type = null; protected $default_mime_type = 'image/jpeg'; protected $quality = false; protected $default_quality = 82; /** * Each instance handles a single file. * * @param string $file Path to the file to load. */ public function __construct( $file ) { $this->file = $file; } /** * Checks to see if current environment supports the editor chosen. * Must be overridden in a sub-class. * * @since 3.5.0 * * @abstract * * @param array $args * @return bool */ public static function test( $args = array() ) { return false; } /** * Checks to see if editor supports the mime-type specified. * Must be overridden in a sub-class. * * @since 3.5.0 * * @abstract * * @param string $mime_type * @return bool */ public static function supports_mime_type( $mime_type ) { return false; } /** * Loads image from $this->file into editor. * * @since 3.5.0 * @abstract * * @return bool|WP_Error True if loaded; WP_Error on failure. */ abstract public function load(); /** * Saves current image to file. * * @since 3.5.0 * @abstract * * @param string $destfilename * @param string $mime_type * @return array|WP_Error {'path'=>string, 'file'=>string, 'width'=>int, 'height'=>int, 'mime-type'=>string} */ abstract public function save( $destfilename = null, $mime_type = null ); /** * Resizes current image. * * At minimum, either a height or width must be provided. * If one of the two is set to null, the resize will * maintain aspect ratio according to the provided dimension. * * @since 3.5.0 * @abstract * * @param int|null $max_w Image width. * @param int|null $max_h Image height. * @param bool $crop * @return bool|WP_Error */ abstract public function resize( $max_w, $max_h, $crop = false ); /** * Resize multiple images from a single source. * * @since 3.5.0 * @abstract * * @param array $sizes { * An array of image size arrays. Default sizes are 'small', 'medium', 'large'. * * @type array $size { * @type int $width Image width. * @type int $height Image height. * @type bool $crop Optional. Whether to crop the image. Default false. * } * } * @return array An array of resized images metadata by size. */ abstract public function multi_resize( $sizes ); /** * Crops Image. * * @since 3.5.0 * @abstract * * @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 bool $src_abs Optional. If the source crop points are absolute. * @return bool|WP_Error */ abstract public function crop( $src_x, $src_y, $src_w, $src_h, $dst_w = null, $dst_h = null, $src_abs = false ); /** * Rotates current image counter-clockwise by $angle. * * @since 3.5.0 * @abstract * * @param float $angle * @return bool|WP_Error */ abstract public function rotate( $angle ); /** * Flips current image. * * @since 3.5.0 * @abstract * * @param bool $horz Flip along Horizontal Axis * @param bool $vert Flip along Vertical Axis * @return bool|WP_Error */ abstract public function flip( $horz, $vert ); /** * Streams current image to browser. * * @since 3.5.0 * @abstract * * @param string $mime_type The mime type of the image. * @return bool|WP_Error True on success, WP_Error object or false on failure. */ abstract public function stream( $mime_type = null ); /** * Gets dimensions of image. * * @since 3.5.0 * * @return array {'width'=>int, 'height'=>int} */ public function get_size() { return $this->size; } /** * Sets current image size. * * @since 3.5.0 * * @param int $width * @param int $height * @return true */ protected function update_size( $width = null, $height = null ) { $this->size = array( 'width' => (int) $width, 'height' => (int) $height, ); return true; } /** * Gets the Image Compression quality on a 1-100% scale. * * @since 4.0.0 * * @return int $quality Compression Quality. Range: [1,100] */ public function get_quality() { if ( ! $this->quality ) { $this->set_quality(); } return $this->quality; } /** * Sets Image Compression quality on a 1-100% scale. * * @since 3.5.0 * * @param int $quality Compression Quality. Range: [1,100] * @return true|WP_Error True if set successfully; WP_Error on failure. */ public function set_quality( $quality = null ) { if ( null === $quality ) { /** * Filters the default image compression quality setting. * * Applies only during initial editor instantiation, or when set_quality() is run * manually without the `$quality` argument. * * set_quality() has priority over the filter. * * @since 3.5.0 * * @param int $quality Quality level between 1 (low) and 100 (high). * @param string $mime_type Image mime type. */ $quality = apply_filters( 'wp_editor_set_quality', $this->default_quality, $this->mime_type ); if ( 'image/jpeg' == $this->mime_type ) { /** * Filters the JPEG compression quality for backward-compatibility. * * Applies only during initial editor instantiation, or when set_quality() is run * manually without the `$quality` argument. * * set_quality() has priority over the filter. * * The filter is evaluated under two contexts: 'image_resize', and 'edit_image', * (when a JPEG image is saved to file). * * @since 2.5.0 * * @param int $quality Quality level between 0 (low) and 100 (high) of the JPEG. * @param string $context Context of the filter. */ $quality = apply_filters( 'jpeg_quality', $quality, 'image_resize' ); } if ( $quality < 0 || $quality > 100 ) { $quality = $this->default_quality; } } // Allow 0, but squash to 1 due to identical images in GD, and for backward compatibility. if ( 0 === $quality ) { $quality = 1; } if ( ( $quality >= 1 ) && ( $quality <= 100 ) ) { $this->quality = $quality; return true; } else { return new WP_Error( 'invalid_image_quality', __( 'Attempted to set image quality outside of the range [1,100].' ) ); } } /** * Returns preferred mime-type and extension based on provided * file's extension and mime, or current file's extension and mime. * * Will default to $this->default_mime_type if requested is not supported. * * Provides corrected filename only if filename is provided. * * @since 3.5.0 * * @param string $filename * @param string $mime_type * @return array { filename|null, extension, mime-type } */ protected function get_output_format( $filename = null, $mime_type = null ) { $new_ext = null; // By default, assume specified type takes priority if ( $mime_type ) { $new_ext = $this->get_extension( $mime_type ); } if ( $filename ) { $file_ext = strtolower( pathinfo( $filename, PATHINFO_EXTENSION ) ); $file_mime = $this->get_mime_type( $file_ext ); } else { // If no file specified, grab editor's current extension and mime-type. $file_ext = strtolower( pathinfo( $this->file, PATHINFO_EXTENSION ) ); $file_mime = $this->mime_type; } // Check to see if specified mime-type is the same as type implied by // file extension. If so, prefer extension from file. if ( ! $mime_type || ( $file_mime == $mime_type ) ) { $mime_type = $file_mime; $new_ext = $file_ext; } // Double-check that the mime-type selected is supported by the editor. // If not, choose a default instead. if ( ! $this->supports_mime_type( $mime_type ) ) { /** * Filters default mime type prior to getting the file extension. * * @see wp_get_mime_types() * * @since 3.5.0 * * @param string $mime_type Mime type string. */ $mime_type = apply_filters( 'image_editor_default_mime_type', $this->default_mime_type ); $new_ext = $this->get_extension( $mime_type ); } if ( $filename ) { $dir = pathinfo( $filename, PATHINFO_DIRNAME ); $ext = pathinfo( $filename, PATHINFO_EXTENSION ); $filename = trailingslashit( $dir ) . wp_basename( $filename, ".$ext" ) . ".{$new_ext}"; } return array( $filename, $new_ext, $mime_type ); } /** * Builds an output filename based on current file, and adding proper suffix * * @since 3.5.0 * * @param string $suffix * @param string $dest_path * @param string $extension * @return string filename */ public function generate_filename( $suffix = null, $dest_path = null, $extension = null ) { // $suffix will be appended to the destination filename, just before the extension if ( ! $suffix ) { $suffix = $this->get_suffix(); } $dir = pathinfo( $this->file, PATHINFO_DIRNAME ); $ext = pathinfo( $this->file, PATHINFO_EXTENSION ); $name = wp_basename( $this->file, ".$ext" ); $new_ext = strtolower( $extension ? $extension : $ext ); if ( ! is_null( $dest_path ) && $_dest_path = realpath( $dest_path ) ) { $dir = $_dest_path; } return trailingslashit( $dir ) . "{$name}-{$suffix}.{$new_ext}"; } /** * Builds and returns proper suffix for file based on height and width. * * @since 3.5.0 * * @return false|string suffix */ public function get_suffix() { if ( ! $this->get_size() ) { return false; } return "{$this->size['width']}x{$this->size['height']}"; } /** * Either calls editor's save function or handles file as a stream. * * @since 3.5.0 * * @param string|stream $filename * @param callable $function * @param array $arguments * @return bool */ protected function make_image( $filename, $function, $arguments ) { if ( $stream = wp_is_stream( $filename ) ) { ob_start(); } else { // The directory containing the original file may no longer exist when using a replication plugin. wp_mkdir_p( dirname( $filename ) ); } $result = call_user_func_array( $function, $arguments ); if ( $result && $stream ) { $contents = ob_get_contents(); $fp = fopen( $filename, 'w' ); if ( ! $fp ) { ob_end_clean(); return false; } fwrite( $fp, $contents ); fclose( $fp ); } if ( $stream ) { ob_end_clean(); } return $result; } /** * Returns first matched mime-type from extension, * as mapped from wp_get_mime_types() * * @since 3.5.0 * * @param string $extension * @return string|false */ protected static function get_mime_type( $extension = null ) { if ( ! $extension ) { return false; } $mime_types = wp_get_mime_types(); $extensions = array_keys( $mime_types ); foreach ( $extensions as $_extension ) { if ( preg_match( "/{$extension}/i", $_extension ) ) { return $mime_types[ $_extension ]; } } return false; } /** * Returns first matched extension from Mime-type, * as mapped from wp_get_mime_types() * * @since 3.5.0 * * @param string $mime_type * @return string|false */ protected static function get_extension( $mime_type = null ) { $extensions = explode( '|', array_search( $mime_type, wp_get_mime_types() ) ); if ( empty( $extensions[0] ) ) { return false; } return $extensions[0]; } } Submit