fixed title bounding rect conflict with window buttons when dragging a tab away from (or back in) a 2-tabs window, with the second tab title being very long

svn path=/trunk/KDE/kdebase/workspace/; revision=1078906

clients/oxygen/oxygenclient.cpp

@@ -420,13 +420,11 @@ namespace Oxygen
   {
 
     // check bounding rect against titleRect
-    // conflicts can happen only if there is only one item in group
-    if( itemData_.count() == 1 )
+    if( titleRectCanConflict() ) 
     {
       QRect titleRect( OxygenClient::titleRect() );
       if( titleRect.left() > rect.left() ) { rect.setLeft( titleRect.left() ); }
       if( titleRect.right() < rect.right() ) { rect.setRight( titleRect.right() ); }
-
     }
 
     // get title bounding rect
@@ -929,10 +927,14 @@ namespace Oxygen
     const QList< ClientGroupItem >& items( clientGroupItems() );
     QString caption( itemCount == 1 ? OxygenClient::caption() : items[index].title() );
 
+    // make sure title rect never conflicts with decoration buttons
+    if( titleRectCanConflict() ) 
+    { textRect = titleBoundingRect( painter->font(), textRect, caption ); }
+    
     // title outline
-    if( itemCount == 1 ) {
-
-      textRect = titleBoundingRect( painter->font(), textRect, caption );
+    if( itemCount == 1 )
+    {
+        
       if( itemData_.isAnimated() ) {
 
         renderTitleOutline( painter, item.boundingRect_, palette );

clients/oxygen/oxygenclient.h

@@ -302,6 +302,15 @@ namespace Oxygen
                 !isPreview();
         }
 
+        //! returns true if drawn item can conflict with buttons.
+        /*! 
+        this might happen either
+        - when there is only one item in the group
+        - when there are two items but the second is being dragged in or away
+        */
+        bool titleRectCanConflict( void ) const
+        {  return ( itemData_.count() == 1 || ( itemData_.count() == 2 && (itemData_.animationType()&AnimationSameTarget) ) ); }
+        
         //! calculate mask
         QRegion calcMask( void ) const;