// 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:

// graphicsresourcewrapper.cpp

// 

//

#ifndef __GRAPHICSRESOURCEWRAPPER_H__

#define __GRAPHICSRESOURCEWRAPPER_H__

#include <e32base.h>

#include <graphics/sgresource.h>

class CGraphicsResourceWrapper;

_LIT(KGraphicsResourceWrapperDll, "graphicsresourcewrapper.dll");

/**

@internalComponent

*/

class CGraphicsResourceWrapperFactory : public CBase

	{

public:

	inline ~CGraphicsResourceWrapperFactory();

	inline CGraphicsResourceWrapper* NewGraphicsResourceWrapper();

private:

	enum { EFactoryMethod = 1 };

	RLibrary iLibrary;

	TBool iLoaded;

	};

inline CGraphicsResourceWrapperFactory::~CGraphicsResourceWrapperFactory()

	{

	if (iLoaded)

		iLibrary.Close();

	}

inline CGraphicsResourceWrapper* CGraphicsResourceWrapperFactory::NewGraphicsResourceWrapper()

	{

	if (!iLoaded)

		{

		if (KErrNone == iLibrary.Load(KGraphicsResourceWrapperDll))

			iLoaded = ETrue;

		else

			return NULL;

		}

	typedef CGraphicsResourceWrapper*(* TFactoryMethod)();

	TFactoryMethod f = reinterpret_cast<TFactoryMethod>(iLibrary.Lookup(EFactoryMethod));

	if (f)

		return f();

	return NULL;

	}

/**

A wrapper class around Graphics Resource so that Wserv doesn't need to link

against graphics resource.

@internalComponent

*/

class CGraphicsResourceWrapper : public CBase

	{

public:

	virtual RSgDrawable* NewDrawableL() = 0;

	virtual TInt Open(RSgDrawable& aDrawable, const TSgDrawableId& aDrawableId) = 0;

	virtual void Close(RSgDrawable& aDrawable) = 0;

	virtual TBool IsNull(const RSgDrawable& aDrawable) = 0;

	virtual TSgDrawableId Id(const RSgDrawable& aDrawable) = 0;

	};

#endif //__GRAPHICSRESOURCEWRAPPER_H__