src/share/classes/sun/java2d/SurfaceData.java

@@ -1055,6 +1055,16 @@
      * Returns destination associated with this SurfaceData.  This could be
      * either an Image or a Component; subclasses of SurfaceData are
      * responsible for returning the appropriate object.
      */
     public abstract Object getDestination();
+
+    /**
+     * Returns default scale factor of the destination surface. Scale factor
+     * describes the mapping between virtual and physical coordinates of the
+     * SurfaceData. If the scale is 2 then virtual pixel coordinates need to be
+     * doubled for physical pixels.
+     */
+    public int getDefaultScale() {
+        return 1;
+    }
 }