1 // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 // graphicsresourcewrapper.cpp

    15 // 

    16 //

    17 

    18 #ifndef __GRAPHICSRESOURCEWRAPPER_H__

    19 #define __GRAPHICSRESOURCEWRAPPER_H__

    20 

    21 #include <e32base.h>

    22 #include <graphics/sgresource.h>

    23 

    24 class CGraphicsResourceWrapper;

    25 

    26 _LIT(KGraphicsResourceWrapperDll, "graphicsresourcewrapper.dll");

    27 

    28 

    29 /**

    30 @internalComponent

    31 */

    32 class CGraphicsResourceWrapperFactory : public CBase

    33 	{

    34 public:

    35 	inline ~CGraphicsResourceWrapperFactory();

    36 	inline CGraphicsResourceWrapper* NewGraphicsResourceWrapper();

    37 

    38 private:

    39 	enum { EFactoryMethod = 1 };

    40 	RLibrary iLibrary;

    41 	TBool iLoaded;

    42 	};

    43 

    44 inline CGraphicsResourceWrapperFactory::~CGraphicsResourceWrapperFactory()

    45 	{

    46 	if (iLoaded)

    47 		iLibrary.Close();

    48 	}

    49 

    50 inline CGraphicsResourceWrapper* CGraphicsResourceWrapperFactory::NewGraphicsResourceWrapper()

    51 	{

    52 	if (!iLoaded)

    53 		{

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

    55 			iLoaded = ETrue;

    56 		else

    57 			return NULL;

    58 		}

    59 

    60 	typedef CGraphicsResourceWrapper*(* TFactoryMethod)();

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

    62 	if (f)

    63 		return f();

    64 

    65 	return NULL;

    66 	}

    67 

    68 /**

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

    70 against graphics resource.

    71 

    72 @internalComponent

    73 */

    74 class CGraphicsResourceWrapper : public CBase

    75 	{

    76 public:

    77 	virtual RSgDrawable* NewDrawableL() = 0;

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

    79 	virtual void Close(RSgDrawable& aDrawable) = 0;

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

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

    82 	};

    83 

    84 #endif //__GRAPHICSRESOURCEWRAPPER_H__