- /**
- * On supporting image formats, try to read out the low-level orientation
- * of the file and return the angle that the file needs to be rotated to
- * be viewed.
- *
- * This information is only useful when manipulating the original file;
- * the width and height we normally work with is logical, and will match
- * any produced output views.
- *
- * The base BitmapHandler doesn't understand any metadata formats, so this
- * is left up to child classes to implement.
- *
- * @param $file File
- * @return int 0, 90, 180 or 270
- */
- public function getRotation( $file ) {
- return 0;
- }
-