diff -r 000000000000 -r 5d03bc08d59c windowing/windowserver/stdgraphic/TESTGRAPHICDRAWER.CPP
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/windowing/windowserver/stdgraphic/TESTGRAPHICDRAWER.CPP	Tue Feb 02 01:47:50 2010 +0200
@@ -0,0 +1,109 @@
+// Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+//
+
+#include "wsgraphicdrawercontext.h"
+#include "stdgraphictestdrawer.h"
+
+CWsGraphicDrawerTestFrameRate* CWsGraphicDrawerTestFrameRate::CreateL()
+	{
+	return new(ELeave) CWsGraphicDrawerTestFrameRate;
+	}
+
+CWsGraphicDrawerTestFrameRate::CWsGraphicDrawerTestFrameRate()
+	{
+	}
+
+CWsGraphicDrawerTestFrameRate::~CWsGraphicDrawerTestFrameRate()
+	{
+	if (iContext)
+		{
+		iContext->Destroy();
+		iContext = NULL;
+		}
+	}
+
+void CWsGraphicDrawerTestFrameRate::ConstructL(MWsGraphicDrawerEnvironment& aEnv,const TGraphicDrawerId& aId,MWsClient& aOwner,const TDesC8& /*aData*/)
+	{
+	BaseConstructL(aEnv,aId,aOwner);
+	if (!(aEnv.Screen(0)->ResolveObjectInterface(KMWsCompositionContext) || aEnv.Screen(0)->ResolveObjectInterface(KMWsScene)))
+		{
+		iContext = CWsGraphicDrawerNonNgaContext::NewL();
+		}
+	else
+		{
+		iContext = CWsGraphicDrawerNgaContext::NewL();
+		}
+	}
+
+void CWsGraphicDrawerTestFrameRate::DoDraw(MWsGc& aGc,const TRect& aRect,const TDesC8& /*aData*/) const
+	{
+	if (KErrNone != iContext->Push(aGc))
+		{
+		return;
+		}
+	//Simplification: treats all screens the same
+	iContext->DrawFrameRate(aGc, aRect, iFps);
+	//Count this draw		
+	iFps.Sample();
+	//Schedule a redraw
+	iContext->ScheduleAnimation(aGc,aRect,0); // as fast as possible
+	iContext->Pop(aGc);
+	}
+
+void CWsGraphicDrawerTestFrameRate::HandleMessage(const TDesC8& /*aData*/)
+	{
+	}
+	
+TInt CFrameRate::Fps() const
+	{
+	if(iNumSamples > 1)
+		{
+		const TUint count = Min(iNumSamples,KMaxSamples);		
+		TInt64 earliest = iSamples[0];
+		TInt64 latest = earliest;
+		for(TInt i=1; i<count; i++)
+			{
+			const TInt64 sample = iSamples[i];
+			earliest = Min(earliest,sample);
+			latest = Max(latest,sample);
+			}
+		const TInt64 duration = latest - earliest;
+		const TInt microspf = (duration / count);
+		if(microspf)
+			{
+			const TInt millispf = (microspf / 1000);
+			if(millispf)
+				{
+				const TInt fps = (1000 / millispf);
+				return fps;
+				}
+			}
+		}
+	return 0;
+	}
+	
+TInt CFrameRate::CountSamples() const
+	{
+	return iNumSamples;
+	}
+
+void CFrameRate::Sample() const
+	{
+	//Add the current tick to the stats for next time
+	TTime now;
+	now.UniversalTime();
+	iSamples[iNumSamples % KMaxSamples] = now.Int64();
+	iNumSamples++;
+	}