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