- /**
- * Returns the offset to show the drag handle.
- */
- virtual int scale_handle_offset() const = 0;
-
- /**
- * Handles the scale handle being dragged to an offset.
- * @param offset the offset the scale handle was dragged to.
- */
- virtual void scale_handle_dragged(int offset) = 0;
-
- /**
- * Handles the scale handle being being released.
- */
- virtual void scale_handle_released() {};
-