sc tiled editing: using function GetPrintArea to calculate document size.

GetPrintArea calculate end column and end row including images.

Change-Id: I256f9f1ce72f22b25cec63603de55cc0192b33ad

sc/source/ui/unoobj/docuno.cxx

@@ -507,11 +507,15 @@ Size ScModelObj::getDocumentSize()
         return aSize;
 
     SCTAB nTab = pViewData->GetTabNo();
+    SCCOL nEndCol = 0;
+    SCROW nEndRow = 0;
     const ScDocument& rDoc = pDocShell->GetDocument();
-    ScAddress aPos = rDoc.GetLastDataPos(nTab);
-    if (!aPos.IsValid())
+
+    if (!rDoc.GetPrintArea( nTab, nEndCol, nEndRow, false ))
         return aSize;
 
+    ScAddress aPos( nEndCol, nEndRow, nTab );
+
     // TWIPS
     sal_uLong nH = rDoc.GetRowHeight(0, aPos.Row(), nTab, true);
     sal_uLong nW = rDoc.GetColWidth(0, aPos.Col(), nTab, true);