sc: implement vcl::ITiledRenderable::getWindow()

(cherry picked from commit 4c6db362)

Conflicts:
	sc/inc/docuno.hxx

Change-Id: If50b4b5baea36e161675afd368fc54bdec01d9a5

sc/inc/docuno.hxx

@@ -415,6 +415,9 @@ public:
 
     /// @see lok::Document::resetSelection().
     virtual void resetSelection() SAL_OVERRIDE;
+
+    /// @see vcl::ITiledRenderable::getWindow().
+    virtual vcl::Window* getWindow() SAL_OVERRIDE;
 };
 
 class ScDrawPagesObj : public cppu::WeakImplHelper2<

sc/source/ui/unoobj/docuno.cxx

@@ -831,6 +831,17 @@ void ScModelObj::resetSelection()
     pDocShell->GetDocument().GetDrawLayer()->libreOfficeKitCallback(LOK_CALLBACK_TEXT_SELECTION, "");
 }
 
+vcl::Window* ScModelObj::getWindow()
+{
+    SolarMutexGuard aGuard;
+
+    ScViewData* pViewData = ScDocShell::GetViewData();
+    if (!pViewData)
+        return 0;
+
+    return pViewData->GetActiveWin();
+}
+
 void ScModelObj::initializeForTiledRendering()
 {
     SolarMutexGuard aGuard;