ImplIsWindowInFront is now unused

Change-Id: I20a7b3acd1af598638282063ad31c0ba91edaf1b

include/vcl/window.hxx

@@ -738,8 +738,6 @@ private:
     SAL_DLLPRIVATE long                 ImplLogicUnitToPixelX( long nX, MapUnit eUnit );
     SAL_DLLPRIVATE long                 ImplLogicUnitToPixelY( long nY, MapUnit eUnit );
 
-    SAL_DLLPRIVATE bool                 ImplIsWindowInFront( const vcl::Window* pTestWindow ) const;
-
     SAL_DLLPRIVATE static void          ImplNewInputContext();
 
     SAL_DLLPRIVATE void                 ImplCallActivateListeners(vcl::Window*);

vcl/source/window/clipping.cxx

@@ -683,92 +683,6 @@ void Window::ImplCalcOverlapRegion( const Rectangle& rSourceRect, vcl::Region& r
     }
 }
 
-bool Window::ImplIsWindowInFront( const vcl::Window* pTestWindow ) const
-{
-    // check for overlapping window
-    pTestWindow = pTestWindow->ImplGetFirstOverlapWindow();
-    const vcl::Window* pTempWindow = pTestWindow;
-    const vcl::Window* pThisWindow = ImplGetFirstOverlapWindow();
-    if ( pTempWindow == pThisWindow )
-        return false;
-    do
-    {
-        if ( pTempWindow == pThisWindow )
-            return true;
-        if ( pTempWindow->mpWindowImpl->mbFrame )
-            break;
-        pTempWindow = pTempWindow->mpWindowImpl->mpOverlapWindow;
-    }
-    while ( pTempWindow );
-    pTempWindow = pThisWindow;
-    do
-    {
-        if ( pTempWindow == pTestWindow )
-            return false;
-        if ( pTempWindow->mpWindowImpl->mbFrame )
-            break;
-        pTempWindow = pTempWindow->mpWindowImpl->mpOverlapWindow;
-    }
-    while ( pTempWindow );
-
-    // move window to same level
-    if ( pThisWindow->mpWindowImpl->mpOverlapWindow != pTestWindow->mpWindowImpl->mpOverlapWindow )
-    {
-        sal_uInt16 nThisLevel = 0;
-        sal_uInt16 nTestLevel = 0;
-        pTempWindow = pThisWindow;
-        do
-        {
-            nThisLevel++;
-            pTempWindow = pTempWindow->mpWindowImpl->mpOverlapWindow;
-        }
-        while ( !pTempWindow->mpWindowImpl->mbFrame );
-        pTempWindow = pTestWindow;
-        do
-        {
-            nTestLevel++;
-            pTempWindow = pTempWindow->mpWindowImpl->mpOverlapWindow;
-        }
-        while ( !pTempWindow->mpWindowImpl->mbFrame );
-
-        if ( nThisLevel < nTestLevel )
-        {
-            do
-            {
-                if ( pTestWindow->mpWindowImpl->mpOverlapWindow == pThisWindow->mpWindowImpl->mpOverlapWindow )
-                    break;
-                if ( pTestWindow->mpWindowImpl->mbFrame )
-                    break;
-                pTestWindow = pTestWindow->mpWindowImpl->mpOverlapWindow;
-            }
-            while ( pTestWindow );
-        }
-        else
-        {
-            do
-            {
-                if ( pThisWindow->mpWindowImpl->mpOverlapWindow == pTempWindow->mpWindowImpl->mpOverlapWindow )
-                    break;
-                if ( pThisWindow->mpWindowImpl->mbFrame )
-                    break;
-                pThisWindow = pThisWindow->mpWindowImpl->mpOverlapWindow;
-            }
-            while ( pThisWindow );
-        }
-    }
-
-    // if TestWindow is before ThisWindow, it is in front
-    pTempWindow = pTestWindow;
-    while ( pTempWindow )
-    {
-        if ( pTempWindow == pThisWindow )
-            return true;
-        pTempWindow = pTempWindow->mpWindowImpl->mpNext;
-    }
-
-    return false;
-}
-
 void Window::SaveBackground( const Point& rPos, const Size& rSize,
                              const Point& rDestOff, VirtualDevice& rSaveDevice )
 {