split out toplevel window area invalidate

Change-Id: I840ed6cbb3f7950230b1f7169ae3245a4a669249
Reviewed-on: https://gerrit.libreoffice.org/72410Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

include/svx/svdpntv.hxx

@@ -238,6 +238,7 @@ public:
     SdrPaintWindow* GetPaintWindow(sal_uInt32 nIndex) const;
     // Replacement for GetWin(0), may return 0L (!)
     OutputDevice* GetFirstOutputDevice() const;
+    static void InvalidateWindow(const tools::Rectangle& rArea, OutputDevice& rDevice);
 
 private:
     SVX_DLLPRIVATE void ImpClearVars();

svx/source/svdraw/sdrpagewindow.cxx

@@ -413,11 +413,11 @@ void SdrPageWindow::InvalidatePageWindow(const basegfx::B2DRange& rRange)
     if (GetPageView().IsVisible() && GetPaintWindow().OutputToWindow())
     {
         const SvtOptionsDrawinglayer aDrawinglayerOpt;
-        vcl::Window& rWindow(static_cast< vcl::Window& >(GetPaintWindow().GetOutputDevice()));
+        OutputDevice& rWindow(GetPaintWindow().GetOutputDevice());
         basegfx::B2DRange aDiscreteRange(rRange);
         aDiscreteRange.transform(rWindow.GetViewTransformation());
 
-        if(aDrawinglayerOpt.IsAntiAliasing())
+        if (aDrawinglayerOpt.IsAntiAliasing())
         {
             // invalidate one discrete unit more under the assumption that AA
             // needs one pixel more
@@ -429,10 +429,10 @@ void SdrPageWindow::InvalidatePageWindow(const basegfx::B2DRange& rRange)
             static_cast<long>(floor(aDiscreteRange.getMinY())),
             static_cast<long>(ceil(aDiscreteRange.getMaxX())),
             static_cast<long>(ceil(aDiscreteRange.getMaxY())));
-        const bool bWasMapModeEnabled(rWindow.IsMapModeEnabled());
 
+        const bool bWasMapModeEnabled(rWindow.IsMapModeEnabled());
         rWindow.EnableMapMode(false);
-        rWindow.Invalidate(aVCLDiscreteRectangle, InvalidateFlags::NoErase);
+        SdrPaintView::InvalidateWindow(aVCLDiscreteRectangle, rWindow);
         rWindow.EnableMapMode(bWasMapModeEnabled);
     }
     else if (comphelper::LibreOfficeKit::isActive())

svx/source/svdraw/sdrpaintwindow.cxx

@@ -225,6 +225,12 @@ rtl::Reference<sdr::overlay::OverlayManager> SdrPaintView::CreateOverlayManager(
     return xOverlayManager;
 }
 
+void SdrPaintView::InvalidateWindow(const tools::Rectangle& rArea, OutputDevice& rDevice)
+{
+    vcl::Window& rWindow(static_cast<vcl::Window&>(rDevice));
+    rWindow.Invalidate(rArea, InvalidateFlags::NoErase);
+}
+
 void SdrPaintWindow::impCreateOverlayManager()
 {
     // not yet one created?