mpFirstBackWin is always null now

Change-Id: Ia03747824c7c6134bc91817538b3f79281aefb8b

5 files changed, 0 insertions, 57 deletions

diff --git a/vcl/inc/window.h b/vcl/inc/window.h
index 6911d0b8aba3..80d1d80c2698 100644
--- a/vcl/inc/window.h
+++ b/vcl/inc/window.h
@@ -117,7 +117,6 @@ struct ImplFrameData
     VclPtr<vcl::Window> mpFocusWin;             //< focus window (is also set, when frame doesn't have the focus)
     VclPtr<vcl::Window> mpMouseMoveWin;         //< last window, where MouseMove() called
     VclPtr<vcl::Window> mpMouseDownWin;         //< last window, where MouseButtonDown() called
-    VclPtr<vcl::Window> mpFirstBackWin;         //< first overlap-window with saved background
     ::std::vector<VclPtr<vcl::Window> > maOwnerDrawList;    //< List of system windows with owner draw decoration
     PhysicalFontCollection* mpFontCollection;   //< Font-List for this frame
     ImplFontCache*      mpFontCache;            //< Font-Cache for this frame
diff --git a/vcl/source/window/clipping.cxx b/vcl/source/window/clipping.cxx
index ee318e152f9a..31893b97ddbc 100644
--- a/vcl/source/window/clipping.cxx
+++ b/vcl/source/window/clipping.cxx
@@ -33,9 +33,6 @@ void Window::InitClipRegion()
 
     vcl::Region  aRegion;
 
-    // Put back backed up background
-    if ( mpWindowImpl->mpFrameData->mpFirstBackWin )
-        ImplInvalidateAllOverlapBackgrounds();
     if ( mpWindowImpl->mbInPaint )
         aRegion = *(mpWindowImpl->mpPaintRegion);
     else
@@ -321,9 +318,6 @@ bool Window::ImplSysObjClip( const vcl::Region* pOldRegion )
                     bUpdate = aNewRegion == *pWinChildClipRegion;
                 }
 
-                if ( mpWindowImpl->mpFrameData->mpFirstBackWin )
-                    ImplInvalidateAllOverlapBackgrounds();
-
                 vcl::Region      aRegion = *pWinChildClipRegion;
                 Rectangle   aWinRect( Point( mnOutOffX, mnOutOffY ), Size( mnOutWidth, mnOutHeight ) );
                 vcl::Region      aWinRectRegion( aWinRect );
@@ -809,25 +803,6 @@ void Window::SaveBackground( const Point& rPos, const Size& rSize,
 
 void Window::ImplInvalidateAllOverlapBackgrounds()
 {
-    vcl::Window* pWindow = mpWindowImpl->mpFrameData->mpFirstBackWin;
-    if (pWindow)
-    {
-        if ( ImplIsWindowInFront( pWindow ) )
-        {
-            Rectangle aRect1( Point( mnOutOffX, mnOutOffY ),
-                              Size( mnOutWidth, mnOutHeight ) );
-            Rectangle aRect2( Point( pWindow->mnOutOffX, pWindow->mnOutOffY ),
-                              Size( pWindow->mnOutWidth, pWindow->mnOutHeight ) );
-            aRect1.Intersection( aRect2 );
-            if ( !aRect1.IsEmpty() )
-            {
-                if ( !pWindow->mpWindowImpl->mpOverlapData->mpSaveBackRgn )
-                    pWindow->mpWindowImpl->mpOverlapData->mpSaveBackRgn = new vcl::Region( aRect2 );
-                pWindow->mpWindowImpl->mpOverlapData->mpSaveBackRgn->Exclude( aRect1 );
-            }
-
-        }
-    }
 }
 
 } /* namespace vcl */
diff --git a/vcl/source/window/paint.cxx b/vcl/source/window/paint.cxx
index 483a55c798d4..1c6500d99529 100644
--- a/vcl/source/window/paint.cxx
+++ b/vcl/source/window/paint.cxx
@@ -764,10 +764,6 @@ void Window::ImplInvalidateParentFrameRegion( vcl::Region& rRegion )
 
 void Window::ImplInvalidate( const vcl::Region* pRegion, InvalidateFlags nFlags )
 {
-    // reset background storage
-    if ( mpWindowImpl->mpFrameData->mpFirstBackWin )
-        ImplInvalidateAllOverlapBackgrounds();
-
     // check what has to be redrawn
     bool bInvalidateAll = !pRegion;
 
@@ -1060,9 +1056,6 @@ void Window::SetWindowRegionPixel()
 
             if ( IsReallyVisible() )
             {
-                // restore background storage
-                if ( mpWindowImpl->mpFrameData->mpFirstBackWin )
-                    ImplInvalidateAllOverlapBackgrounds();
                 Rectangle   aRect( Point( mnOutOffX, mnOutOffY ), Size( mnOutWidth, mnOutHeight ) );
                 vcl::Region      aRegion( aRect );
                 ImplInvalidateParentFrameRegion( aRegion );
@@ -1145,9 +1138,6 @@ void Window::SetWindowRegionPixel( const vcl::Region& rRegion )
 
         if ( IsReallyVisible() )
         {
-            // restore background storage
-            if ( mpWindowImpl->mpFrameData->mpFirstBackWin )
-                ImplInvalidateAllOverlapBackgrounds();
             Rectangle   aRect( Point( mnOutOffX, mnOutOffY ), Size( mnOutWidth, mnOutHeight ) );
             vcl::Region      aRegion( aRect );
             ImplInvalidateParentFrameRegion( aRegion );
@@ -1546,10 +1536,6 @@ void Window::ImplScroll( const Rectangle& rRect,
     if ( !nHorzScroll && !nVertScroll )
         return;
 
-    // restore background storage
-    if ( mpWindowImpl->mpFrameData->mpFirstBackWin )
-        ImplInvalidateAllOverlapBackgrounds();
-
     if ( mpWindowImpl->mpCursor )
         mpWindowImpl->mpCursor->ImplSuspend();
 
diff --git a/vcl/source/window/stacking.cxx b/vcl/source/window/stacking.cxx
index 6f9ef3af5b7c..8418919b8b67 100644
--- a/vcl/source/window/stacking.cxx
+++ b/vcl/source/window/stacking.cxx
@@ -307,9 +307,6 @@ void Window::ImplToTop( ToTopFlags nFlags )
             // recalculate ClipRegion of this and all overlapping windows
             if ( IsReallyVisible() )
             {
-                // reset background storage
-                if ( mpWindowImpl->mpFrameData->mpFirstBackWin )
-                    ImplInvalidateAllOverlapBackgrounds();
                 mpWindowImpl->mpOverlapWindow->ImplSetClipFlagOverlapWindows();
             }
         }
@@ -546,10 +543,6 @@ void Window::SetZOrder( vcl::Window* pRefWindow, ZOrderFlags nFlags )
 
     if ( IsReallyVisible() )
     {
-        // restore background storage
-        if ( mpWindowImpl->mpFrameData->mpFirstBackWin )
-            ImplInvalidateAllOverlapBackgrounds();
-
         if ( mpWindowImpl->mbInitWinClipRegion || !mpWindowImpl->maWinClipRegion.IsEmpty() )
         {
             bool bInitWinClipRegion = mpWindowImpl->mbInitWinClipRegion;
diff --git a/vcl/source/window/window.cxx b/vcl/source/window/window.cxx
index 856111e023aa..f845fc283222 100644
--- a/vcl/source/window/window.cxx
+++ b/vcl/source/window/window.cxx
@@ -1027,7 +1027,6 @@ void Window::ImplInit( vcl::Window* pParent, WinBits nStyle, SystemParentData* p
         mpWindowImpl->mpFrameData->mpFocusWin         = nullptr;
         mpWindowImpl->mpFrameData->mpMouseMoveWin     = nullptr;
         mpWindowImpl->mpFrameData->mpMouseDownWin     = nullptr;
-        mpWindowImpl->mpFrameData->mpFirstBackWin     = nullptr;
         mpWindowImpl->mpFrameData->mpFontCollection   = pSVData->maGDIData.mpScreenFontList;
         mpWindowImpl->mpFrameData->mpFontCache        = pSVData->maGDIData.mpScreenFontCache;
         mpWindowImpl->mpFrameData->mnFocusId          = nullptr;
@@ -1572,9 +1571,6 @@ void Window::ImplPosSizeWindow( long nX, long nY,
 
     if ( IsReallyVisible() )
     {
-        if ( mpWindowImpl->mpFrameData->mpFirstBackWin )
-            ImplInvalidateAllOverlapBackgrounds();
-
         Rectangle aOldWinRect( Point( nOldOutOffX, nOldOutOffY ),
                                Size( nOldOutWidth, nOldOutHeight ) );
         pOldRegion = new vcl::Region( aOldWinRect );
@@ -1751,9 +1747,6 @@ void Window::ImplPosSizeWindow( long nX, long nY,
         {
             if ( bNewPos || bNewSize )
             {
-                // reset background storage
-                if ( mpWindowImpl->mpFrameData->mpFirstBackWin )
-                    ImplInvalidateAllOverlapBackgrounds();
                 // set Clip-Flag
                 bUpdateSysObjClip = !ImplSetClipFlag( true );
             }
@@ -2507,9 +2500,6 @@ void Window::Show(bool bVisible, ShowFlags nFlags)
 
     if( aDogTag.IsDead() )
         return;
-    // invalidate all saved backgrounds
-    if ( mpWindowImpl->mpFrameData->mpFirstBackWin )
-        ImplInvalidateAllOverlapBackgrounds();
 
     // the SHOW/HIDE events also serve as indicators to send child creation/destroy events to the access bridge
     // However, the access bridge only uses this event if the data member is not NULL (it's kind of a hack that