[PATCH 2 of 2] Do not paint the JRootPane for Windows that get their decoration from the system and do not have a menu bar

[Ingo Proetel]

# HG changeset patch
# User Ingo Proetel <proetel at aicas.de>
# Date 1303371344 -7200
# Node ID 0852643719870188c13f141ef395579f08d6f97c
# Parent  033a795ade9cd0e361267719079384ab0d84fdf6
Do not paint the JRootPane for Windows that get their decoration from the system and do not have a menu bar.

diff -r 033a795ade9c -r 085264371987 src/share/classes/sun/awt/peer/cacio/CacioWindowPeer.java
--- a/src/share/classes/sun/awt/peer/cacio/CacioWindowPeer.java	Thu Apr 21 09:35:41 2011 +0200
+++ b/src/share/classes/sun/awt/peer/cacio/CacioWindowPeer.java	Thu Apr 21 09:35:44 2011 +0200
@@ -148,6 +148,7 @@
         // we cannot have menu support...
         Window window = (Window) getAWTComponent();
         JRootPane jrootpane = new JRootPane();
+        jrootpane.setDoubleBuffered(false);
         return jrootpane;
     }
 
@@ -319,27 +320,28 @@
     @Override
     protected void peerPaint(Graphics g, boolean update) {
 
-        /*
-         * Don't paint the whole area, we only need to paint the frame
-         * borders
-         */
-        JComponent c = getSwingComponent();
-        if (c != null) {
-            Insets insets = getInsets();
-
-            Area clip = new Area(c.getBounds());
-            Rectangle clip2 =
-                    new Rectangle(insets.left,
-                                  insets.top,
-                                  c.getWidth() - insets.left - insets.right,
-                                  c.getHeight() - insets.bottom - insets.top);
-            clip.subtract(new Area(clip2));
-
-            Graphics peerG = new WindowClippedGraphics((Graphics2D) g, clip);
-            try {
-                c.paint(peerG);
-            } finally {
-                peerG.dispose();
+        if (shouldDecorate() || getSwingComponent().getJMenuBar() != null) {
+            /*
+             * Don't paint the whole area, we only need to paint the frame
+             * borders
+             */
+            JComponent c = getSwingComponent();
+            if (c != null) {
+                Insets insets = getInsets();
+                Area clip = new Area(c.getBounds());
+                Rectangle clip2 =
+                        new Rectangle(insets.left,
+                                      insets.top,
+                                      c.getWidth() - insets.left - insets.right,
+                                      c.getHeight() - insets.bottom - insets.top);
+                clip.subtract(new Area(clip2));
+            
+                Graphics peerG = new WindowClippedGraphics((Graphics2D) g, clip);
+                try {
+                    c.paint(peerG);
+                } finally {
+                    peerG.dispose();
+                }
             }
         }
     }