// Copyright (c) 2003-2009 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:

//

#if !defined(__OFFSCREENBITMAP_H__)

#define __OFFSCREENBITMAP_H__

#include <e32std.h>

#include <e32base.h>

#include <gdi.h>

#include <Graphics/WSGRAPHICDRAWERINTERFACE.H>

class CFbsBitmapDevice;

class CWsClientWindow;

class CWsWindow;

class CWsWindowBase;

class CWsClient;

class CScreen;

class DWsBitmap;

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

class CDebugOsbWin;

#endif

class CWsOffScreenBitmap : public CBase, public MWsBackBuffer

	{

public: // Construction / Destruction

	static CWsOffScreenBitmap* NewL(CScreen* aScreen);

	~CWsOffScreenBitmap();

protected:

	CWsOffScreenBitmap(CScreen* aScreen);

	void ConstructL();

public: // Bitmap

	TInt DisplayModeChanged(TBool aSwapWidthAndHeight);

	void UpdateGc(const TBool aSwapWidthAndHeight);

public:

	CFbsBitmap* Bitmap();

	CFbsDevice* BitmapDevice();

public: // implementing MWsObjectProvider

	TAny* ResolveObjectInterface(TUint aTypeId);

public: // implementing MWsBackBuffer

	CFbsBitmap* GetBitmap();

	CFbsBitGc* GetBitGc();

	CFbsBitGc* GetBitGcCurrent();

	TInt SetBitGc(CFbsBitGc* aBitGc);

	TInt RedirectTo(MWsBackBuffer* aTarget);

	void SetObserver(MWsFlickerFreeBufferObserver* aObserver);

	MWsFlickerFreeBufferObserver* Observer();

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

	void Update();

#endif	

protected:	// Data

	CFbsBitGc* iBitmapGc;

	CFbsBitmap* iBitmap;

	CFbsBitmapDevice* iBitmapDevice;

	CScreen* iScreen;

private:	// Data

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

	CDebugOsbWin* iOsbWin;

#endif

private:	// Data

	// used by MWsBackBuffer to redirect OSB output

	CFbsBitGc* iRedirectGc;

	MWsBackBuffer* iRedirectBuffer;

	MWsFlickerFreeBufferObserver* iObserver;

	};

#endif // __OFFSCREENBITMAP__