// Copyright (c) 2007-2009 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 "fbrenderstage.h"

#include <fbs.h>

#include <bitstd.h>

#include <bitdev.h>

#ifdef USE_DEBUG_FRAME_CAPTURE

#include "../debuglog/DEBUGLOG.H"

#endif

CFbRenderStage* CFbRenderStage::NewL(MWsGraphicDrawerEnvironment * aEnv,MWsScreen * aScreen, MWsScreenRedraw * aScreenRedraw)

	{

	CFbRenderStage * stage = new(ELeave) CFbRenderStage;

	CleanupStack::PushL(stage);

	stage->ConstructL(aEnv, aScreen, aScreenRedraw);

	CleanupStack::Pop(stage);

	return stage;

	}

void CFbRenderStage::ConstructL(MWsGraphicDrawerEnvironment * aEnv,MWsScreen * aScreen, MWsScreenRedraw * aScreenRedraw)

	{

	BaseConstructL();

	iEnv = aEnv;

	iScreen = aScreen;

	iScreenRedraw = aScreenRedraw;

	iBackBuffer = iScreen->ObjectInterface<MWsBackBuffer>();

	User::LeaveIfNull(iBackBuffer);

	iScreenConfig = iScreen->ObjectInterface<MWsScreenConfig>();

	User::LeaveIfNull(iScreenConfig);

#ifdef USE_DEBUG_FRAME_CAPTURE

	MWsIniFile* wsini = iEnv->ObjectInterface<MWsIniFile>();

	_LIT(KWSERVIniFileVarFrameCapture,"FRAMECAPTURE");

	iFrameCapture = wsini->FindVar(KWSERVIniFileVarFrameCapture);

	// Location to save captured images

	if (!wsini->FindVar(KWSERVIniFileVarFrameCapture, iFrameCaptureLocation) || iFrameCaptureLocation.Length() == 0)

		{

		iFrameCaptureLocation.Set(KWSERVIniFileVarFrameCaptureLocation);

		}

	iDebugBitmap = new (ELeave) CFbsBitmap;

	TDisplayMode displayMode = iScreenConfig->DisplayMode();

	TSize screenSize = iScreenConfig->SizeInPixels();

	// Create bitmap with largest dimension of width and height to cope with screen rotation 

	// assuming largest screen dimension doesn't increase during rotation

	TUint largestDimension = ((screenSize.iWidth > screenSize.iHeight)? screenSize.iWidth : screenSize.iHeight);

	User::LeaveIfError(iDebugBitmap->Create(TSize(largestDimension, largestDimension), displayMode));

	iDebugBitmapDevice = CFbsBitmapDevice::NewL(iDebugBitmap);

	User::LeaveIfError(iDebugBitmapDevice->CreateContext(iDebugBitmapGc));

#endif

	}

CFbRenderStage::CFbRenderStage()

	{

	}

CFbRenderStage::~CFbRenderStage()

	{

	}

CFbsBitGc * CFbRenderStage::Begin()

	{

	return iBackBuffer->GetBitGcCurrent();

	}

void CFbRenderStage::End()

	{

	if (Next())

		{

		CFbsBitGc * gc = Next()->Begin();

		const TRegion * region = iScreenRedraw->AnimationRegion();

#ifdef USE_DEBUG_FRAME_CAPTURE

		if (iFrameCapture)

			{

			CaptureFrame(region);

			}

#endif

		BlitRegion(region, gc);

		Next()->End();

 		}

 	}

void CFbRenderStage::BlitRegion(const TRegion* aRegion, CFbsBitGc* aGc)

	{

	if(aRegion && !aRegion->IsEmpty() && !aRegion->CheckError())

		{

		if (iBackBuffer->Observer())

			iBackBuffer->Observer()->BeforeUpdate(*iBackBuffer,*aRegion);

		aGc->SetDrawMode(CGraphicsContext::EDrawModeWriteAlpha);

		aGc->SetClippingRegion(aRegion);

		aGc->BitBlt(-iScreenConfig->ScaledOrigin(),iBackBuffer->GetBitmap());

		aGc->SetDrawMode(CGraphicsContext::EDrawModePEN);

		aGc->CancelClipping();

		if (iBackBuffer->Observer())

			iBackBuffer->Observer()->AfterUpdate(*iBackBuffer,*aRegion);

		}	

	}

#ifdef USE_DEBUG_FRAME_CAPTURE

class TTruncateOverflow : public TDesOverflow

	{

	public:

	virtual void Overflow(TDes&) {};

	};

void CFbRenderStage::CaptureFrame(const TRegion* aRegion)

	{

	iDebugBitmapGc->SetBrushColor(TRgb(255,255,255));

	iDebugBitmapGc->Clear();

	iDebugBitmapGc->SetBrushColor(TRgb(55,55,55));

	iDebugBitmapGc->SetBrushStyle(CGraphicsContext::ESolidBrush);

	TSize screenSize = iScreenConfig->ScreenModeSizeInPixels();

	iDebugBitmapGc->DrawRect(TRect(0, 0, screenSize.iWidth, screenSize.iHeight));

	BlitRegion(aRegion, iDebugBitmapGc);

	TUint timestamp = User::FastCounter();

	TBuf<LogTBufSize> filename;

	TTruncateOverflow overflow;

	filename.AppendFormat(iFrameCaptureLocation, &overflow);

	filename.AppendFormat(_L("frame_%010u.mbm"), &overflow, timestamp);

	iDebugBitmap->Save(filename);

	LogRegion(filename, _L(" CFbRenderStage::CaptureFrame() "), aRegion);	

	}

void CFbRenderStage::LogRegion(const TDesC& aPrefix, const TDesC& aFunctionName, const TRegion* aRegion)

	{

	TBuf<LogTBufSize> log;

	TTruncateOverflow overflow;

	TInt rectCount = (aRegion == NULL ? 0 : aRegion->Count());

	log.AppendFormat(aPrefix, &overflow);

	log.AppendFormat(aFunctionName, &overflow);

	log.AppendFormat(_L("region [%d,"), &overflow, rectCount);

	if (rectCount > 0)

		{

		const TRect* rectangles = aRegion->RectangleList();

		TBuf<1> comma;

		for (TInt ii = 0; ii < rectCount; ii++)

			{

			TRect current = rectangles[ii];

			log.AppendFormat(_L("%S{{%d,%d},{%d,%d}}"), &overflow, &comma,

                             current.iTl.iX,current.iTl.iY,current.iBr.iX,current.iBr.iY);

			comma = _L(",");

			}

		}

	else

		{

		log.AppendFormat(_L("NULL"), &overflow);

		}

	log.AppendFormat(_L("]"), &overflow);

	iEnv->Log(ELogEverything, log);

	}

#endif