modules/graphics/src/main/java/com/sun/javafx/tk/TKStageListener.java

@@ -46,10 +46,18 @@
      * @param height The new Height
      */
     public void changedSize(float width, float height);
 
     /**
+     * The stage's peer should now be displayed with a new UI scale
+     *
+     * @param xScale the new recommended horizontal scale
+     * @param yScale the new recommended vertical scale
+     */
+    public void changedScale(float xScale, float yScale);
+
+    /**
      * The stages peer focused state has changed.
      *
      * @param focused True if the stage's peer now contains the focus
      * @param cause The cause of (de)activation
      */