Use scope switch rather than manual on and off.

Change-Id: Ia4072339b6f1fd4b929d891dcc8f3bb3e2403d5e

sc/inc/scopetools.hxx

@@ -46,6 +46,15 @@ public:
     ~UndoSwitch();
 };
 
+class SC_DLLPUBLIC IdleSwitch
+{
+    ScDocument& mrDoc;
+    bool mbOldValue;
+public:
+    IdleSwitch(ScDocument& rDoc, bool bEnableIdle);
+    ~IdleSwitch();
+};
+
 }
 
 #endif

sc/source/core/tool/scopetools.cxx

@@ -45,6 +45,17 @@ UndoSwitch::~UndoSwitch()
     mrDoc.EnableUndo(mbOldValue);
 }
 
+IdleSwitch::IdleSwitch(ScDocument& rDoc, bool bEnableIdle) :
+    mrDoc(rDoc), mbOldValue(rDoc.IsIdleEnabled())
+{
+    mrDoc.EnableIdle(bEnableIdle);
+}
+
+IdleSwitch::~IdleSwitch()
+{
+    mrDoc.EnableIdle(mbOldValue);
+}
+
 }
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

sc/source/ui/view/output2.cxx

@@ -61,6 +61,7 @@
 #include "markdata.hxx"
 #include "stlsheet.hxx"
 #include "spellcheckcontext.hxx"
+#include <scopetools.hxx>
 
 #include <com/sun/star/i18n/DirectionProperty.hpp>
 #include <comphelper/string.hxx>
@@ -1443,9 +1444,7 @@ void ScOutputData::DrawStrings( bool bPixelToLogic )
 
     vcl::PDFExtOutDevData* pPDFData = PTR_CAST( vcl::PDFExtOutDevData, mpDev->GetExtOutDevData() );
 
-    bool bWasIdleEnabled = mpDoc->IsIdleEnabled();
-    mpDoc->EnableIdle(false);
-
+    sc::IdleSwitch aIdleSwitch(*mpDoc, false);
     ScDrawStringsVars aVars( this, bPixelToLogic );
 
     bool bProgress = false;
@@ -2071,7 +2070,6 @@ void ScOutputData::DrawStrings( bool bPixelToLogic )
     }
     if ( bProgress )
         ScProgress::DeleteInterpretProgress();
-    mpDoc->EnableIdle(bWasIdleEnabled);
 }
 
 ScFieldEditEngine* ScOutputData::CreateOutputEditEngine()