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<?php
/**
* Base WordPress Image Editor
*
* @package WordPress
* @subpackage Image_Editor
*/
/**
* Base image editor class from which implementations extend
*
* @since 3.5.0
*/
#[AllowDynamicProperties]
abstract class WP_Image_Editor {
protected $file = null;
protected $size = null;
protected $mime_type = null;
protected $output_mime_type = null;
protected $default_mime_type = 'image/jpeg';
protected $quality = false;
// Deprecated since 5.8.1. See get_default_quality() below.
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 subclass.
*
* @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 subclass.
*
* @since 3.5.0
*
* @abstract
*
* @param string $mime_type
* @return bool
*/
public static function supports_mime_type( $mime_type ) {
return false;
}
/**
* Loads image from $this->file into editor.
*
* @since 3.5.0
* @abstract
*
* @return true|WP_Error True if loaded; WP_Error on failure.
*/
abstract public function load();
/**
* Saves current image to file.
*
* @since 3.5.0
* @since 6.0.0 The `$filesize` value was added to the returned array.
* @abstract
*
* @param string $destfilename Optional. Destination filename. Default null.
* @param string $mime_type Optional. The mime-type. Default null.
* @return array|WP_Error {
* Array on success or WP_Error if the file failed to save.
*
* @type string $path Path to the image file.
* @type string $file Name of the image file.
* @type int $width Image width.
* @type int $height Image height.
* @type string $mime-type The mime type of the image.
* @type int $filesize File size of the image.
* }
*/
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|array $crop {
* Optional. Image cropping behavior. If false, the image will be scaled (default).
* If true, image will be cropped to the specified dimensions using center positions.
* If an array, the image will be cropped using the array to specify the crop location:
*
* @type string $0 The x crop position. Accepts 'left' 'center', or 'right'.
* @type string $1 The y crop position. Accepts 'top', 'center', or 'bottom'.
* }
* @return true|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 ...$0 {
* @type int $width Image width.
* @type int $height Image height.
* @type bool|array $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 true|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 true|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 true|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 true|WP_Error True on success, WP_Error object on failure.
*/
abstract public function stream( $mime_type = null );
/**
* Gets dimensions of image.
*
* @since 3.5.0
*
* @return int[] {
* Dimensions of the image.
*
* @type int $width The image width.
* @type int $height The image height.
* }
*/
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 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 ) {
// Use the output mime type if present. If not, fall back to the input/initial mime type.
$mime_type = ! empty( $this->output_mime_type ) ? $this->output_mime_type : $this->mime_type;
// Get the default quality setting for the mime type.
$default_quality = $this->get_default_quality( $mime_type );
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.
*
* The WP_Image_Editor::set_quality() method 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', $default_quality, $mime_type );
if ( 'image/jpeg' === $mime_type ) {
/**
* Filters the JPEG compression quality for backward-compatibility.
*
* Applies only during initial editor instantiation, or when set_quality() is run
* manually without the `$quality` argument.
*
* The WP_Image_Editor::set_quality() method 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 = $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( 'inval