sc-perf: bundle SdrObject::BroadcastObjectChange() calls during Save

Test doc https://bugs.documentfoundation.org/attachment.cgi?id=128252 from
https://bugs.documentfoundation.org/show_bug.cgi?id=103493

ScPostIt::CreateCaptionFromInitData() called through
ScDocument::CreateAllNoteCaptions()

Incl.     Self  Called
Before:
326,418,830,114  487,308   6,645
After:
145,055,889,118  511,681   6,645

Reduced to 44% or speed-up by factor 2.25

Overall ScDocShell::SaveXML()
Before: 370,433,720,090
After: 189,120,982,786

Reduced to 51% or speed-up by factor 1.96

There's still too much broadcasting to accessibility going on though..

Change-Id: I50555fd9751ac24006cc96b2fa8e82b32aba0748

1 files changed, 29 insertions, 0 deletions

diff --git a/svx/source/svdraw/svdobj.cxx b/svx/source/svdraw/svdobj.cxx
index f87ecd1b6276..0f3de29393c0 100644
--- a/svx/source/svdraw/svdobj.cxx
+++ b/svx/source/svdraw/svdobj.cxx
@@ -302,6 +302,8 @@ SdrObject::SdrObject() :
     ,pGrabBagItem(nullptr)
     ,mnNavigationPosition(SAL_MAX_UINT32)
     ,mnLayerID(0)
+    ,mbDelayBroadcastObjectChange(false)
+    ,mbBroadcastObjectChangePending(false)
     ,mpSvxShape( nullptr )
     ,maWeakUnoShape()
     ,mbDoNotInsertIntoPageAutomatically(false)
@@ -880,6 +882,12 @@ void SdrObject::BroadcastObjectChange() const
     if( pModel && pModel->isLocked() )
         return;
 
+    if (mbDelayBroadcastObjectChange)
+    {
+        mbBroadcastObjectChangePending = true;
+        return;
+    }
+
     bool bPlusDataBroadcast(pPlusData && pPlusData->pBroadcast);
     bool bObjectChange(IsInserted() && pModel);
 
@@ -3092,6 +3100,27 @@ bool SdrObject::HasText() const
     return false;
 }
 
+
+SdrDelayBroadcastObjectChange::SdrDelayBroadcastObjectChange( SdrObject& rObj ) :
+    mrObj(rObj), mbOldDelayBroadcastObjectChange( rObj.mbDelayBroadcastObjectChange)
+{
+    mrObj.mbDelayBroadcastObjectChange = true;
+}
+
+SdrDelayBroadcastObjectChange::~SdrDelayBroadcastObjectChange()
+{
+    if (!mbOldDelayBroadcastObjectChange)
+    {
+        mrObj.mbDelayBroadcastObjectChange = false;
+        if (mrObj.mbBroadcastObjectChangePending)
+        {
+            mrObj.mbBroadcastObjectChangePending = false;
+            mrObj.BroadcastObjectChange();
+        }
+    }
+}
+
+
 SdrObject* SdrObjFactory::CreateObjectFromFactory( sal_uInt32 nInventor, sal_uInt16 nObjIdentifier, SdrPage* , SdrModel*  )
 {
     SdrObjCreatorParams aParams { nInventor, nObjIdentifier };