Related: fdo#50697 reset the cache timeout on GetGraphic

so the graphic gets swapped out Xms after the last use and not Xms after
initial creation regardless of if it got used a moment earlier.

Change-Id: I1458f307d090ecd8d8d031b545f23e78bf1bcb67

include/svtools/grfmgr.hxx

@@ -299,6 +299,8 @@ private:
 
                             DECL_LINK( ImplAutoSwapOutHdl, void* );
 
+    void SVT_DLLPRIVATE     ResetCacheTimeOut();
+
 protected:
 
     virtual void            GraphicManagerDestroyed();

svtools/source/graphic/grfmgr.cxx

@@ -744,10 +744,26 @@ void GraphicObject::StopAnimation( OutputDevice* pOut, long nExtraData )
         mpSimpleCache->maGraphic.StopAnimation( pOut, nExtraData );
 }
 
+void GraphicObject::ResetCacheTimeOut()
+{
+    if (mpSwapOutTimer)
+    {
+        mpSwapOutTimer->Stop();
+        mpSwapOutTimer->Start();
+    }
+}
+
 const Graphic& GraphicObject::GetGraphic() const
 {
-    if( mbAutoSwapped )
-        ( (GraphicObject*) this )->ImplAutoSwapIn();
+    GraphicObject *pThis = const_cast<GraphicObject*>(this);
+
+    if (mbAutoSwapped)
+        pThis->ImplAutoSwapIn();
+
+    //fdo#50697 If we've been asked to provide the graphic, then reset
+    //the cache timeout to start from now and not remain at the
+    //time of creation
+    pThis->ResetCacheTimeOut();
 
     return maGraphic;
 }