[PATCH 1 of 2] Added flag to mark a peer to clear its background with an new paintevent. This gives target implementations better control when peers need to clear their background

[Ingo Proetel]

# HG changeset patch
# User Ingo Proetel <proetel at aicas.de>
# Date 1303371341 -7200
# Node ID 033a795ade9cd0e361267719079384ab0d84fdf6
# Parent  5f7eafa98597dfb14967164eb3fd1a554c5a23ab
Added flag to mark a peer to clear its background with an new paintevent. This gives target implementations better control when peers need to clear their background.

diff -r 5f7eafa98597 -r 033a795ade9c src/share/classes/sun/awt/peer/cacio/CacioComponentPeer.java
--- a/src/share/classes/sun/awt/peer/cacio/CacioComponentPeer.java	Wed Apr 20 11:40:07 2011 +0200
+++ b/src/share/classes/sun/awt/peer/cacio/CacioComponentPeer.java	Thu Apr 21 09:35:41 2011 +0200
@@ -619,7 +619,6 @@
             // laid out correctly.
             swingComponent.validate();
         }
-        needsClearBackground = true;
     }
 
     public void setEnabled(boolean enable) {
@@ -797,4 +796,13 @@
     boolean isLayouting() {
         return false;
     }
+
+    /**
+     * Mark this peer so that the next paint event clears the background.
+     */
+    public void clearBackground()
+    {
+      needsClearBackground = true;
+    }
+
 }
diff -r 5f7eafa98597 -r 033a795ade9c src/share/classes/sun/awt/peer/cacio/CacioEventPump.java
--- a/src/share/classes/sun/awt/peer/cacio/CacioEventPump.java	Wed Apr 20 11:40:07 2011 +0200
+++ b/src/share/classes/sun/awt/peer/cacio/CacioEventPump.java	Thu Apr 21 09:35:41 2011 +0200
@@ -174,16 +174,25 @@
         postEvent(source, ev);
 
     }
-
+    
     protected final void postPaintEvent(CacioComponent source, int x, int y,
-                                        int width, int height) {
-
+                                        int width, int height, boolean paintBackground) {
+        if (paintBackground)
+        {
+          ((CacioComponentPeer) source).clearBackground();
+        }
+        
         PaintEvent ev = PaintEventDispatcher.getPaintEventDispatcher()
               .createPaintEvent(source.getAWTComponent(), x, y, width, height);
         postEvent(source, ev);
 
     }
-
+    
+    protected final void postPaintEvent(CacioComponent source, int x, int y,
+                                        int width, int height) {
+        postPaintEvent(source, x, y, width, height, false);
+    }
+    
     protected final void postFocusEvent(CacioComponent source, int id,
                                         boolean temporary,
                                         CacioComponent opposite) {