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