// Copyright (c) 2008-2009 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:

//

#ifndef __RENDERTARGET_H__

#define __RENDERTARGET_H__

#include <graphics/sgimagecollection.h>

#include <graphics/wsuibuffer.h>

#include "directgdigcwrapper.h"

#if defined(__WINS__) && defined(_DEBUG)

class CDebugOsbWin;

#endif

class RWsOffScreenImageTarget

	{

public:

	RWsOffScreenImageTarget();

	void OpenL(TUint32 aUsage,TSgCpuAccess aCpuAccess,TUidPixelFormat aPixelFormat,const TSize& aSize, TInt aScreenNumber);

	void Close();

public:

	static const TInt KAspectRatioCount = 2;

	TSgImageInfo iImageInfos[KAspectRatioCount];

	RDirectGdiImageTarget iImageTargets[KAspectRatioCount];

	RSgImageCollection iImageCollections[KAspectRatioCount];

	RSgImage iImages[KAspectRatioCount];

	};

class CRenderTarget : public CBase, public MWsUiBuffer

	{

public:

	enum TAspectRatio

		{

		ENormalAspectRatio = 0,

		EInvertedAspectRatio = 1,

		EAspectRatioCount = RWsOffScreenImageTarget::KAspectRatioCount

		};

public:

	static CRenderTarget* NewL(MWsIniFile* aIniFile, TUint32 aUsage, TSgCpuAccess aCpuAccess, TDisplayMode aDisplayMode, 

			const TSize& aSize, TInt aScreenNumber);

	~CRenderTarget();

	TAny* ResolveObjectInterface(TUint aTypeId);

	TDisplayMode DisplayMode() const;

	const TSurfaceId& SurfaceId() const;

	inline TAspectRatio AspectRatio() const;

	void SetAspectRatio(TAspectRatio aAspectRatio);

	const TSgDrawableId& ImageId(TAspectRatio aAspectRatio) const;

	inline CDirectGdiGcWrapper* DirectGdiGc() const;

	TInt SetDrawDeviceOffset(TPoint& aOrigin);

	TInt AllocNewTarget(RWsOffScreenImageTarget& aNewTarget, const TSize& aNewSize);

	void SwitchTarget(RWsOffScreenImageTarget& aNewTarget);	//takes ownership of aNewTarget

	void GetPixel(TRgb& aColor, const TPoint& aPixel) const;

	void GetScanLine(TDes8& aScanLine, const TPoint& aStartPixel, TInt aPixelLength, TDisplayMode aDispMode) const;

	TBool RectCompare(const TRect& aRect1, const TRect& aRect2) const;

	void CopyToBitmapL(CFbsBitmap* aBitmap, const TRect& aRect) const;

#if defined(__WINS__) && defined(_DEBUG)

	void UpdateDebugWin();

#endif	

public: //from MWsUiBuffer

	TInt MapReadWrite(TAny*& aDataAddress, TInt& aDataStride);

	TInt MapWriteOnly(TAny*& aDataAddress, TInt& aDataStride);

	TInt Unmap();

	TUidPixelFormat PixelFormat() const;

	TSize SizeInPixels() const;

public:

	TPoint iOffset;

private:

	CRenderTarget();

	void ConstructL(MWsIniFile* aIniFile, TUint32 aUsage, TSgCpuAccess aCpuAccess, TDisplayMode aDisplayMode, const TSize& aSize, TInt aScreenNumber);

	inline RSgImage& Image();

	inline const RSgImage& Image() const;

	inline const RSgImageCollection& ImageCollection() const;

	inline const TSgImageInfo& ImageInfo() const;

	const TUint8* DataAddress(const TAny* aStartDataAddress, const TPoint& aStartPoint, TInt aDataStride, TInt aBpp) const;

	TInt MapReadOnly(const TAny*& aDataAddress, TInt& aDataStride) const;

	TInt Unmap() const;

private:

	RWsOffScreenImageTarget iTarget;

	TAspectRatio iCurrentAspectRatio;

	CDirectGdiGcWrapper* iDirectGdiGcWrapper;

#if defined(__WINS__) && defined(_DEBUG)

	CDebugOsbWin* iOsbWin;

#endif

	};

inline CRenderTarget::TAspectRatio CRenderTarget::AspectRatio() const

	{ return iCurrentAspectRatio; }

inline CDirectGdiGcWrapper* CRenderTarget::DirectGdiGc() const

	{ return iDirectGdiGcWrapper; }

inline RSgImage& CRenderTarget::Image()

	{ return iTarget.iImages[iCurrentAspectRatio]; }

inline const RSgImage& CRenderTarget::Image() const

	{ return iTarget.iImages[iCurrentAspectRatio]; }

inline const RSgImageCollection& CRenderTarget::ImageCollection() const

	{ return iTarget.iImageCollections[iCurrentAspectRatio]; }

inline const TSgImageInfo& CRenderTarget::ImageInfo() const

	{ return iTarget.iImageInfos[iCurrentAspectRatio]; }

#endif // __RENDERTARGET_H__