Add EffectWindow::isDeleted() method.

Don't draw shadow for deleted windows.

svn path=/branches/work/kwin_composite/; revision=648149

effects.cpp

@@ -14,6 +14,7 @@ License. See the file "COPYING" for the exact licensing terms.
 #include "client.h"
 #include "scene.h"
 #include "options.h"
+#include "deleted.h"
 
 #include "effects/boxswitch.h"
 #include "effects/demo_taskbarthumbnail.h"
@@ -621,4 +622,9 @@ bool EffectWindow::isOnDesktop( int d ) const
     return desktop() == d || isOnAllDesktops();
     }
 
+bool EffectWindow::isDeleted() const
+{
+    return (dynamic_cast<Deleted*>( toplevel ) != 0);
+}
+
 } // namespace

effects.h

@@ -201,6 +201,7 @@ class EffectWindow
         Toplevel* window();
         void enablePainting( int reason );
         void disablePainting( int reason );
+        bool isDeleted() const;
         bool isOnDesktop( int d ) const;
         bool isOnCurrentDesktop() const;
         bool isOnAllDesktops() const;

effects/shadow.cpp

@@ -32,7 +32,8 @@ void ShadowEffect::prePaintWindow( EffectWindow* w, int* mask, QRegion* paint, Q
 
 void ShadowEffect::paintWindow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data )
     {
-    drawShadow( w, mask, region, data );
+    if( !w->isDeleted() )
+        drawShadow( w, mask, region, data );
     effects->paintWindow( w, mask, region, data );
     }