Changeset 59136 for branches/6.5/src/wp-includes/class-wp-image-editor-gd.php

Timestamp:

09/30/2024 06:37:05 PM (4 months ago)

Author:

adamsilverstein

Message:

Media: improve support for lossless WebP.

When uploading lossless WebP images, WordPress now correctly outputs lossless WebP with both the Imagick and GD image editors.

Props: adamsilverstein, martinkrcho.
Fixes #60291.

File:

• branches/6.5/src/wp-includes/class-wp-image-editor-gd.php (modified) (1 diff)

branches/6.5/src/wp-includes/class-wp-image-editor-gd.php

@@ -566 +566 @@
             'filesize'  => wp_filesize( $filename ),
         );
+    }
+
+    /**
+     * Sets Image Compression quality on a 1-100% scale. Handles WebP lossless images.
+     *
+     * @since 6.7.0
+     *
+     * @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 ) {
+        $quality_result = parent::set_quality( $quality );
+        if ( is_wp_error( $quality_result ) ) {
+            return $quality_result;
+        } else {
+            $quality = $this->get_quality();
+        }
+
+        // Handle setting the quality for WebP lossless images, see https://php.watch/versions/8.1/gd-webp-lossless.
+        try {
+            if ( 'image/webp' === $this->mime_type && defined( 'IMG_WEBP_LOSSLESS' ) ) {
+                $webp_info = wp_get_webp_info( $this->file );
+                if ( ! empty( $webp_info['type'] ) && 'lossless' === $webp_info['type'] ) {
+                    $quality = IMG_WEBP_LOSSLESS;
+                    parent::set_quality( $quality );
+                }
+            }
+        } catch ( Exception $e ) {
+            return new WP_Error( 'image_quality_error', $e->getMessage() );
+        }
+        $this->quality = $quality;
+        return true;
     }