LOK - Calc: use the tiled rendering area as visible area in PaintArea

This workaround is needed since the visible area in core is not the
same which is used in the client.

Change-Id: I82b23e689000c4d8106ffa01ed082ae3d629b1be
Reviewed-on: https://gerrit.libreoffice.org/30976Reviewed-by: Marco Cecchetti <mrcekets@gmail.com>
Tested-by: Marco Cecchetti <mrcekets@gmail.com>

sc/source/ui/view/tabview3.cxx

@@ -2220,24 +2220,38 @@ void ScTabView::PaintArea( SCCOL nStartCol, SCROW nStartRow, SCCOL nEndCol, SCRO
         nCol2 = nEndCol;
         nRow2 = nEndRow;
 
-        SCCOL nScrX = aViewData.GetPosX( eHWhich );
-        SCROW nScrY = aViewData.GetPosY( eVWhich );
-        if (nCol1 < nScrX)
-            nCol1 = nScrX;
-        if (nCol2 < nScrX)
+        SCCOL nLastX = 0;
+        SCROW nLastY = 0;
+
+        if (comphelper::LibreOfficeKit::isActive())
         {
-            if ( eMode == SC_UPDATE_ALL )   // for UPDATE_ALL, paint anyway
-                nCol2 = nScrX;              // (because of extending strings to the right)
-            else
-                bOut = true;                // completely outside the window
+            nLastX = aViewData.GetMaxTiledCol();
+            nLastY = aViewData.GetMaxTiledRow();
+        }
+        else
+        {
+
+            SCCOL nScrX = aViewData.GetPosX( eHWhich );
+            SCROW nScrY = aViewData.GetPosY( eVWhich );
+
+            if (nCol1 < nScrX)
+                nCol1 = nScrX;
+            if (nCol2 < nScrX)
+            {
+                if ( eMode == SC_UPDATE_ALL )   // for UPDATE_ALL, paint anyway
+                    nCol2 = nScrX;              // (because of extending strings to the right)
+                else
+                    bOut = true;                // completely outside the window
+            }
+            if (nRow1 < nScrY)
+                nRow1 = nScrY;
+            if (nRow2 < nScrY)
+                bOut = true;
+
+            nLastX = nScrX + aViewData.VisibleCellsX( eHWhich ) + 1;
+            nLastY = nScrY + aViewData.VisibleCellsY( eVWhich ) + 1;
         }
-        if (nRow1 < nScrY)
-            nRow1 = nScrY;
-        if (nRow2 < nScrY)
-            bOut = true;
 
-        SCCOL nLastX = nScrX + aViewData.VisibleCellsX( eHWhich ) + 1;
-        SCROW nLastY = nScrY + aViewData.VisibleCellsY( eVWhich ) + 1;
         if (nCol1 > nLastX)
             bOut = true;
         if (nCol2 > nLastX)