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This changeset adds the capability for core media uploads to generate sub sized images in more than a single mime type. The output formats for each mime type can be controlled through a filter. WebP is used as an additional output format for JPEG images by default to improve front end performance. When generating additional mime types, only images which are smaller than the respective original are retained. By default, additional mime type images are only generated for the built-in core image sizes and any custom sizes that have opted in. Image meta is updated with a new 'sources' array containing file details for each mime type. Each image size in the 'sizes' array also gets a new 'sources' array that contains the image file details for each mime type. This change also increases image upload retries to accommodate additional image sizes. It also adds a `$mime_type` parameter to the `wp_get_missing_image_subsizes` function and filter. This change adds three new filters to enable full control of secondary mime image generation and output: * A new filter `wp_image_sizes_with_additional_mime_type_support` that filters the sizes that support secondary mime type output. Developers can use this to control the output of additional mime type sub-sized images on a per size basis. * A new filter `wp_upload_image_mime_transforms` that filters the output mime types for a given input mime type. Developers can use this to control generation of additional mime types for a given input mime type or even override the original mime type. * A new filter `wp_content_image_mimes` which controls image mime type output selection and order for frontend content. Developers can use this to control the mime type output preference order for content images. Content images inserted from the media library will use the available image versions based on the order from this filter. Thanks to the many contributors who helped develop, test and give feedback on this feature. A haiku to summarize: Upload a JPEG Images of all sizes Output as WebPs Props flixos90, MatthiasReinholz, studiolxv, markhowellsmead, eatingrules, pbiron, mukesh27, joegrainger, mehulkaklotar, tweetythierry, akshitsethi, peterwilsoncc, eugenemanuilov, mitogh, shetheliving, clarkeemily, codekraft, mikeschroder, clorith, kasparsd, spacedmonkey, trevorpfromsandee, jb510, scofennellgmailcom, seedsca, cagsmith, karinclimber, dainemawer, baxbridge, grapplerulrich, sobatkras, chynnabenton, tonylocalword, barneydavey, kwillmorth, garymatthews919, olliejones, imarkinteractive, jeffpaul, feastdesignco, webbeetle, masteradhoc. See #55443. Built from https://develop.svn.wordpress.org/trunk@53751 git-svn-id: http://core.svn.wordpress.org/trunk@53310 1a063a9b-81f0-0310-95a4-ce76da25c4cd
691 lines
18 KiB
PHP
691 lines
18 KiB
PHP
<?php
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/**
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* Base WordPress Image Editor
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*
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* @package WordPress
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* @subpackage Image_Editor
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*/
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/**
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* Base image editor class from which implementations extend
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*
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* @since 3.5.0
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*/
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abstract class WP_Image_Editor {
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protected $file = null;
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protected $size = null;
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protected $mime_type = null;
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protected $output_mime_type = null;
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protected $default_mime_type = 'image/jpeg';
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protected $quality = false;
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// Deprecated since 5.8.1. See get_default_quality() below.
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protected $default_quality = 82;
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/**
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* Each instance handles a single file.
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*
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* @param string $file Path to the file to load.
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*/
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public function __construct( $file ) {
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$this->file = $file;
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}
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/**
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* Checks to see if current environment supports the editor chosen.
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* Must be overridden in a subclass.
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*
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* @since 3.5.0
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*
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* @abstract
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*
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* @param array $args
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* @return bool
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*/
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public static function test( $args = array() ) {
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return false;
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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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* Must be overridden in a subclass.
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*
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* @since 3.5.0
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*
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* @abstract
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*
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* @param string $mime_type
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* @return bool
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*/
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public static function supports_mime_type( $mime_type ) {
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return false;
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}
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/**
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* Loads image from $this->file into editor.
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*
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* @since 3.5.0
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* @abstract
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*
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* @return true|WP_Error True if loaded; WP_Error on failure.
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*/
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abstract public function load();
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/**
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* Saves current image to file.
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*
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* @since 3.5.0
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* @since 6.0.0 The `$filesize` value was added to the returned array.
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* @abstract
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*
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* @param string $destfilename Optional. Destination filename. Default null.
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* @param string $mime_type Optional. The mime-type. Default null.
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* @return array|WP_Error {
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* Array on success or WP_Error if the file failed to save.
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*
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* @type string $path Path to the image file.
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* @type string $file Name of the image file.
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* @type int $width Image width.
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* @type int $height Image height.
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* @type string $mime-type The mime type of the image.
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* @type int $filesize File size of the image.
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* }
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*/
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abstract public function save( $destfilename = null, $mime_type = null );
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/**
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* Resizes current image.
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*
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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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*
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* @since 3.5.0
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* @abstract
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*
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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 $crop
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* @return true|WP_Error
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*/
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abstract public function resize( $max_w, $max_h, $crop = false );
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/**
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* Resize multiple images from a single source.
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*
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* @since 3.5.0
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* @abstract
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*
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* @param array $sizes {
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* An array of image size arrays. Default sizes are 'small', 'medium', 'large'.
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*
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* @type array ...$0 {
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* @type int $width Image width.
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* @type int $height Image height.
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* @type bool $crop Optional. Whether to crop the image. Default false.
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* }
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* }
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* @return array An array of resized images metadata by size.
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*/
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abstract public function multi_resize( $sizes );
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/**
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* Crops Image.
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*
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* @since 3.5.0
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* @abstract
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*
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* @param int $src_x The start x position to crop from.
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* @param int $src_y The start y position to crop from.
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* @param int $src_w The width to crop.
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* @param int $src_h The height to crop.
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* @param int $dst_w Optional. The destination width.
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* @param int $dst_h Optional. The destination height.
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* @param bool $src_abs Optional. If the source crop points are absolute.
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* @return true|WP_Error
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*/
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abstract public function crop( $src_x, $src_y, $src_w, $src_h, $dst_w = null, $dst_h = null, $src_abs = false );
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/**
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* Rotates current image counter-clockwise by $angle.
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*
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* @since 3.5.0
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* @abstract
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*
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* @param float $angle
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* @return true|WP_Error
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*/
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abstract public function rotate( $angle );
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/**
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* Flips current image.
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*
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* @since 3.5.0
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* @abstract
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*
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* @param bool $horz Flip along Horizontal Axis
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* @param bool $vert Flip along Vertical Axis
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* @return true|WP_Error
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*/
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abstract public function flip( $horz, $vert );
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/**
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* Streams current image to browser.
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*
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* @since 3.5.0
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* @abstract
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*
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* @param string $mime_type The mime type of the image.
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* @return true|WP_Error True on success, WP_Error object on failure.
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*/
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abstract public function stream( $mime_type = null );
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/**
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* Gets dimensions of image.
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*
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* @since 3.5.0
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*
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* @return int[] {
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* Dimensions of the image.
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*
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* @type int $width The image width.
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* @type int $height The image height.
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* }
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*/
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public function get_size() {
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return $this->size;
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}
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/**
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* Sets current image size.
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*
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* @since 3.5.0
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*
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* @param int $width
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* @param int $height
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* @return true
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*/
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protected function update_size( $width = null, $height = null ) {
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$this->size = array(
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'width' => (int) $width,
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'height' => (int) $height,
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);
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return true;
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}
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/**
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* Gets the Image Compression quality on a 1-100% scale.
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*
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* @since 4.0.0
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*
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* @return int Compression Quality. Range: [1,100]
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*/
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public function get_quality() {
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if ( ! $this->quality ) {
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$this->set_quality();
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}
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return $this->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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*
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* @since 3.5.0
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*
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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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*/
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public function set_quality( $quality = null ) {
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// Use the output mime type if present. If not, fall back to the input/initial mime type.
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$mime_type = ! empty( $this->output_mime_type ) ? $this->output_mime_type : $this->mime_type;
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// Get the default quality setting for the mime type.
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$default_quality = $this->get_default_quality( $mime_type );
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if ( null === $quality ) {
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/**
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* Filters the default image compression quality setting.
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*
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* Applies only during initial editor instantiation, or when set_quality() is run
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* manually without the `$quality` argument.
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*
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* The WP_Image_Editor::set_quality() method has priority over the filter.
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*
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* @since 3.5.0
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*
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* @param int $quality Quality level between 1 (low) and 100 (high).
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* @param string $mime_type Image mime type.
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*/
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$quality = apply_filters( 'wp_editor_set_quality', $default_quality, $mime_type );
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if ( 'image/jpeg' === $mime_type ) {
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/**
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* Filters the JPEG compression quality for backward-compatibility.
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*
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* Applies only during initial editor instantiation, or when set_quality() is run
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* manually without the `$quality` argument.
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*
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* The WP_Image_Editor::set_quality() method has priority over the filter.
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*
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* The filter is evaluated under two contexts: 'image_resize', and 'edit_image',
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* (when a JPEG image is saved to file).
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*
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* @since 2.5.0
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*
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* @param int $quality Quality level between 0 (low) and 100 (high) of the JPEG.
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* @param string $context Context of the filter.
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*/
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$quality = apply_filters( 'jpeg_quality', $quality, 'image_resize' );
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}
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if ( $quality < 0 || $quality > 100 ) {
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$quality = $default_quality;
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}
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}
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// Allow 0, but squash to 1 due to identical images in GD, and for backward compatibility.
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if ( 0 === $quality ) {
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$quality = 1;
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}
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if ( ( $quality >= 1 ) && ( $quality <= 100 ) ) {
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$this->quality = $quality;
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return true;
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} else {
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return new WP_Error( 'invalid_image_quality', __( 'Attempted to set image quality outside of the range [1,100].' ) );
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}
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}
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/**
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* Returns the default compression quality setting for the mime type.
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*
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* @since 5.8.1
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*
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* @param string $mime_type
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* @return int The default quality setting for the mime type.
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*/
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protected function get_default_quality( $mime_type ) {
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switch ( $mime_type ) {
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case 'image/webp':
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$quality = 86;
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break;
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case 'image/jpeg':
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default:
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$quality = $this->default_quality;
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}
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return $quality;
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}
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/**
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* Returns preferred mime-type and extension based on provided
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* file's extension and mime, or current file's extension and mime.
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*
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* Will default to $this->default_mime_type if requested is not supported.
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*
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* Provides corrected filename only if filename is provided.
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*
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* @since 3.5.0
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*
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* @param string $filename
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* @param string $mime_type
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* @return array { filename|null, extension, mime-type }
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*/
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protected function get_output_format( $filename = null, $mime_type = null ) {
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$new_ext = null;
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// If no mime type is passed but output mime type is set, use that.
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if ( ! $mime_type && ! empty( $this->output_mime_type ) ) {
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$mime_type = $this->output_mime_type;
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}
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// By default, assume specified type takes priority.
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if ( $mime_type ) {
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$new_ext = $this->get_extension( $mime_type );
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}
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if ( $filename ) {
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$file_ext = strtolower( pathinfo( $filename, PATHINFO_EXTENSION ) );
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$file_mime = $this->get_mime_type( $file_ext );
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} else {
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// If no file specified, grab editor's current extension and mime-type.
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$file_ext = strtolower( pathinfo( $this->file, PATHINFO_EXTENSION ) );
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$file_mime = $this->mime_type;
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}
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// Check to see if specified mime-type is the same as type implied by
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// file extension. If so, prefer extension from file.
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if ( ! $mime_type || ( $file_mime == $mime_type ) ) {
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$mime_type = $file_mime;
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$new_ext = $file_ext;
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}
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/**
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* Filters the image editor output format mapping.
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*
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* Enables filtering the mime type used to save images. By default,
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* the mapping array is empty, so the mime type matches the source image.
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*
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* @see WP_Image_Editor::get_output_format()
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*
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* @since 5.8.0
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*
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* @param string[] $output_format {
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* An array of mime type mappings. Maps a source mime type to a new
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* destination mime type. Default empty array.
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*
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* @type string ...$0 The new mime type.
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* }
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* @param string $filename Path to the image.
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* @param string $mime_type The source image mime type.
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*/
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$output_format = apply_filters( 'image_editor_output_format', array(), $filename, $mime_type );
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if ( isset( $output_format[ $mime_type ] )
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&& $this->supports_mime_type( $output_format[ $mime_type ] )
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) {
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$mime_type = $output_format[ $mime_type ];
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$new_ext = $this->get_extension( $mime_type );
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}
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// Double-check that the mime-type selected is supported by the editor.
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// If not, choose a default instead.
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if ( ! $this->supports_mime_type( $mime_type ) ) {
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/**
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* Filters default mime type prior to getting the file extension.
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*
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* @see wp_get_mime_types()
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*
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* @since 3.5.0
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*
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* @param string $mime_type Mime type string.
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*/
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$mime_type = apply_filters( 'image_editor_default_mime_type', $this->default_mime_type );
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$new_ext = $this->get_extension( $mime_type );
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}
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// Ensure both $filename and $new_ext are not empty.
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// $this->get_extension() returns false on error which would effectively remove the extension
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// from $filename. That shouldn't happen, files without extensions are not supported.
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if ( $filename && $new_ext ) {
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$dir = pathinfo( $filename, PATHINFO_DIRNAME );
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$ext = pathinfo( $filename, PATHINFO_EXTENSION );
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$filename = trailingslashit( $dir ) . wp_basename( $filename, ".$ext" ) . ".{$new_ext}";
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}
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if ( $mime_type && ( $mime_type !== $this->mime_type ) ) {
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// The image will be converted when saving. Set the quality for the new mime-type if not already set.
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if ( $mime_type !== $this->output_mime_type ) {
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$this->output_mime_type = $mime_type;
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$this->set_quality();
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}
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} elseif ( ! empty( $this->output_mime_type ) ) {
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// Reset output_mime_type and quality.
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$this->output_mime_type = null;
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$this->set_quality();
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}
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return array( $filename, $new_ext, $mime_type );
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}
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/**
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* Builds an output filename based on current file, and adding proper suffix.
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*
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* @since 3.5.0
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* @since 6.1.0 Skips adding a suffix when set to an empty string. When the
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* file extension being generated doesn't match the image file extension,
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* add the extension to the suffix
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*
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* @param string $suffix Optional. Suffix to add to the filename. The default null
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* will result in a 'widthxheight' suffix. Passing
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* an empty string will result in no suffix.
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* @param string $dest_path Optional. The path to save the file to. The default null
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* will use the image file path.
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* @param string $extension Optional. The file extension to use. The default null
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* will use the image file extension.
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* @return string filename The generated file name.
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*/
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public function generate_filename( $suffix = null, $dest_path = null, $extension = null ) {
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// $suffix will be appended to the destination filename, just before the extension.
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if ( null === $suffix ) {
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$suffix = $this->get_suffix();
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}
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$dir = pathinfo( $this->file, PATHINFO_DIRNAME );
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$ext = pathinfo( $this->file, PATHINFO_EXTENSION );
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$name = wp_basename( $this->file, ".$ext" );
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$new_ext = strtolower( $extension ? $extension : $ext );
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if ( ! is_null( $dest_path ) ) {
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if ( ! wp_is_stream( $dest_path ) ) {
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$_dest_path = realpath( $dest_path );
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if ( $_dest_path ) {
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$dir = $_dest_path;
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}
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} else {
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$dir = $dest_path;
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}
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}
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if ( empty( $suffix ) ) {
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$suffix = '';
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} else {
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$suffix = "-{$suffix}";
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}
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// When the file extension being generated doesn't match the image file extension,
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// add the extension to the suffix to ensure a unique file name. Prevents
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// name conflicts when a single image type can have multiple extensions,
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// eg. .jpg, .jpeg and .jpe are all valid JPEG extensions.
|
|
if ( ! empty( $extension ) && $extension !== $ext ) {
|
|
$suffix .= "-{$ext}";
|
|
}
|
|
|
|
return trailingslashit( $dir ) . "{$name}{$suffix}.{$new_ext}";
|
|
}
|
|
|
|
/**
|
|
* Builds and returns proper suffix for file based on height and width.
|
|
*
|
|
* @since 3.5.0
|
|
*
|
|
* @return string|false suffix
|
|
*/
|
|
public function get_suffix() {
|
|
if ( ! $this->get_size() ) {
|
|
return false;
|
|
}
|
|
|
|
return "{$this->size['width']}x{$this->size['height']}";
|
|
}
|
|
|
|
/**
|
|
* Check if a JPEG image has EXIF Orientation tag and rotate it if needed.
|
|
*
|
|
* @since 5.3.0
|
|
*
|
|
* @return bool|WP_Error True if the image was rotated. False if not rotated (no EXIF data or the image doesn't need to be rotated).
|
|
* WP_Error if error while rotating.
|
|
*/
|
|
public function maybe_exif_rotate() {
|
|
$orientation = null;
|
|
|
|
if ( is_callable( 'exif_read_data' ) && 'image/jpeg' === $this->mime_type ) {
|
|
$exif_data = @exif_read_data( $this->file );
|
|
|
|
if ( ! empty( $exif_data['Orientation'] ) ) {
|
|
$orientation = (int) $exif_data['Orientation'];
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Filters the `$orientation` value to correct it before rotating or to prevent rotating the image.
|
|
*
|
|
* @since 5.3.0
|
|
*
|
|
* @param int $orientation EXIF Orientation value as retrieved from the image file.
|
|
* @param string $file Path to the image file.
|
|
*/
|
|
$orientation = apply_filters( 'wp_image_maybe_exif_rotate', $orientation, $this->file );
|
|
|
|
if ( ! $orientation || 1 === $orientation ) {
|
|
return false;
|
|
}
|
|
|
|
switch ( $orientation ) {
|
|
case 2:
|
|
// Flip horizontally.
|
|
$result = $this->flip( true, false );
|
|
break;
|
|
case 3:
|
|
// Rotate 180 degrees or flip horizontally and vertically.
|
|
// Flipping seems faster and uses less resources.
|
|
$result = $this->flip( true, true );
|
|
break;
|
|
case 4:
|
|
// Flip vertically.
|
|
$result = $this->flip( false, true );
|
|
break;
|
|
case 5:
|
|
// Rotate 90 degrees counter-clockwise and flip vertically.
|
|
$result = $this->rotate( 90 );
|
|
|
|
if ( ! is_wp_error( $result ) ) {
|
|
$result = $this->flip( false, true );
|
|
}
|
|
|
|
break;
|
|
case 6:
|
|
// Rotate 90 degrees clockwise (270 counter-clockwise).
|
|
$result = $this->rotate( 270 );
|
|
break;
|
|
case 7:
|
|
// Rotate 90 degrees counter-clockwise and flip horizontally.
|
|
$result = $this->rotate( 90 );
|
|
|
|
if ( ! is_wp_error( $result ) ) {
|
|
$result = $this->flip( true, false );
|
|
}
|
|
|
|
break;
|
|
case 8:
|
|
// Rotate 90 degrees counter-clockwise.
|
|
$result = $this->rotate( 90 );
|
|
break;
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Either calls editor's save function or handles file as a stream.
|
|
*
|
|
* @since 3.5.0
|
|
*
|
|
* @param string $filename
|
|
* @param callable $callback
|
|
* @param array $arguments
|
|
* @return bool
|
|
*/
|
|
protected function make_image( $filename, $callback, $arguments ) {
|
|
$stream = wp_is_stream( $filename );
|
|
if ( $stream ) {
|
|
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( $callback, $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 ) {
|
|
if ( empty( $mime_type ) ) {
|
|
return false;
|
|
}
|
|
|
|
return wp_get_default_extension_for_mime_type( $mime_type );
|
|
}
|
|
|
|
/**
|
|
* Set the editor output mime type, useful when outputting alternate mime types.
|
|
*
|
|
* Track that the mime type is set with the mime type set flag.
|
|
*
|
|
* @since 6.1.0
|
|
*
|
|
* @param string $output_mime_type The mime type to set.
|
|
*/
|
|
public function set_output_mime_type( $output_mime_type ) {
|
|
$this->output_mime_type = $output_mime_type;
|
|
}
|
|
|
|
/**
|
|
* Reset the mime type to the original file mime type.
|
|
*
|
|
* Reset the mime type set flag.
|
|
*
|
|
* @since 6.1.0
|
|
*/
|
|
public function reset_output_mime_type() {
|
|
$this->output_mime_type = $this->mime_type;
|
|
}
|
|
}
|