src/share/classes/sun/awt/LightweightFrame.java

@@ -29,10 +29,11 @@
 import java.awt.Frame;
 import java.awt.Graphics;
 import java.awt.Image;
 import java.awt.MenuBar;
 import java.awt.MenuComponent;
+import java.awt.Rectangle;
 import java.awt.Toolkit;
 import java.awt.peer.FramePeer;
 
 /**
  * The class provides basic functionality for a lightweight frame

@@ -122,6 +123,50 @@
      * The method is called by the AWT grab machinery.
      *
      * @see SunToolkit#ungrab(java.awt.Window)
      */
     public abstract void ungrabFocus();
+
+    /**
+     * Returns the scale factor of this frame. The default value is 1.
+     *
+     * @return the scale factor
+     * @see #notifyDisplayChanged(int)
+     */
+    public abstract int getScaleFactor();
+
+    /**
+     * Called when display of the hosted frame is changed.
+     *
+     * @param scaleFactor the scale factor
+     */
+    public abstract void notifyDisplayChanged(int scaleFactor);
+
+    /**
+     * Host window absolute bounds.
+     */
+    private int hostX, hostY, hostW, hostH;
+
+    /**
+     * Returns the absolute bounds of the host (embedding) window.
+     *
+     * @return the host window bounds
+     */
+    public Rectangle getHostBounds() {
+        if (hostX == 0 && hostY == 0 && hostW == 0 && hostH == 0) {
+            // The client app is probably unaware of the setHostBounds.
+            // A safe fall-back:
+            return getBounds();
+        }
+        return new Rectangle(hostX, hostY, hostW, hostH);
+    }
+
+    /**
+     * Sets the absolute bounds of the host (embedding) window.
+     */
+    public void setHostBounds(int x, int y, int w, int h) {
+        hostX = x;
+        hostY = y;
+        hostW = w;
+        hostH = h;
+    }
 }