SwViewShell: make sure no callback is fired during PaintTile()

When the invalidation callback is invoked, we call PaintTile() for each
tile that is affected by the invalidated rectangle. Make sure
PaintTile() doesn't result in new invalidations generated by itself,
to avoid infinite loops.

Change-Id: I593726bd7e72028f26103829831949f000665e95

1 files changed, 3 insertions, 0 deletions

diff --git a/sw/source/core/view/viewsh.cxx b/sw/source/core/view/viewsh.cxx
index ba2402c5fd3b..b452db5a6180 100644
--- a/sw/source/core/view/viewsh.cxx
+++ b/sw/source/core/view/viewsh.cxx
@@ -1778,6 +1778,8 @@ void SwViewShell::PaintTile(VirtualDevice &rDevice, int contextWidth, int contex
     OutputDevice *pSaveOut = mpOut;
     bool bTiledRendering = mbTiledRendering;
     mbTiledRendering = true;
+    LibreOfficeKitCallback pCallback = mpLibreOfficeKitCallback;
+    mpLibreOfficeKitCallback = 0;
     mpOut = &rDevice;
 
     // resizes the virtual device so to contain the entrie context
@@ -1825,6 +1827,7 @@ void SwViewShell::PaintTile(VirtualDevice &rDevice, int contextWidth, int contex
 
     // SwViewShell's output device tear down
     mpOut = pSaveOut;
+    mpLibreOfficeKitCallback = pCallback;
     mbTiledRendering = bTiledRendering;
 
     static bool bDebug = getenv("SW_DEBUG_TILEDRENDERING") != 0;