* @access public
*
* @param int $quality Compression Quality. Range: [1,100]
- * @return boolean
+ * @return boolean|WP_Error True if set successfully; WP_Error on failure.
*/
- public function set_quality( $quality ) {
+ public function set_quality( $quality = null ) {
+ if ( $quality == null ) {
+ $quality = $this->quality;
+ }
+
/**
- * Filter the default quality setting.
+ * Filter the default image compression quality setting.
*
* @since 3.5.0
*
- * @param int $quality Quality level between 0 (low) and 100 (high).
+ * @param int $quality Quality level between 1 (low) and 100 (high).
+ * @param string $mime_type Image mime type.
*/
- $this->quality = apply_filters( 'wp_editor_set_quality', $quality );
+ $quality = apply_filters( 'wp_editor_set_quality', $quality, $this->mime_type );
+
+ if ( 'image/jpeg' == $this->mime_type ) {
+ /**
+ * Filter the JPEG compression quality for backward-compatibility.
+ *
+ * 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' );
- return ( (bool) $this->quality );
+ // Allow 0, but squash to 1 due to identical images in GD, and for backwards compatibility.
+ if ( $quality == 0 ) {
+ $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].') );
+ }
}
/**