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 //

    15 

    16 #ifndef __DRAWABLECACHE_H__

    17 #define __DRAWABLECACHE_H__

    18 

    19 #include <e32cmn.h>

    20 #include <graphics/sgresource.h>

    21 

    22 #include "W32STD.H"

    23 

    24 /**

    25 @file

    26 @internalComponent

    27 Provides functionality which is used by RemoteGc.

    28 */

    29 

    30 class RWsDrawableSource;

    31 class MWsDrawableSourceProvider;

    32 class CGraphicsResourceWrapperFactory;

    33 class CGraphicsResourceWrapper;

    34 

    35 /**

    36 @internalComponent

    37 */

    38 NONSHARABLE_CLASS(CDrawableCacheBase): public CBase

    39 	{

    40 public:

    41 	virtual TInt UseL(const TSgDrawableId& aDrawableId, TInt aScreenNumber) = 0;

    42 	const TAny* Resolve(const TSgDrawableId& aDrawableId, TInt aScreenNumber) const;

    43 protected:

    44 	class TCacheEntry

    45 		{

    46 	public:

    47 		TCacheEntry(const TSgDrawableId& aDrawableId, TInt aScreenNumber)

    48 			: iDrawableId(aDrawableId), iScreenNumber(aScreenNumber), iCachedItem(NULL)

    49 			{}

    50 	public:

    51 		TSgDrawableId iDrawableId;

    52 		TInt iScreenNumber;

    53 		TAny* iCachedItem;

    54 		};

    55 protected:

    56 	static TInt Compare(const TCacheEntry &aFirstEntry, const TCacheEntry &aSecondEntry);

    57 protected:

    58 	RArray<TCacheEntry> iCachedItems;

    59 	};

    60 

    61 /**

    62 @internalComponent

    63 */

    64 NONSHARABLE_CLASS(CWindowDrawableCache): public CDrawableCacheBase

    65 	{

    66 public:

    67 	CWindowDrawableCache(RWsSession& aSession);

    68 	~CWindowDrawableCache();

    69 	TInt UseL(const TSgDrawableId& aDrawableId, TInt aScreenNumber);

    70 private:

    71 	RWsSession& iWsSession;

    72 	CGraphicsResourceWrapperFactory* iGrwFactory;

    73 	CGraphicsResourceWrapper* iGraphicsResource;

    74 	};

    75 

    76 /**

    77 @internalComponent

    78 */

    79 NONSHARABLE_CLASS(CRenderStageDrawableCache): public CDrawableCacheBase

    80 	{

    81 public:

    82 	CRenderStageDrawableCache(MWsDrawableSourceProvider* aDrawResource);

    83 	~CRenderStageDrawableCache();

    84 	TInt UseL(const TSgDrawableId& aDrawableId, TInt aScreenNumber);

    85 private:

    86 	MWsDrawableSourceProvider* iDrawResource;

    87 	};

    88 

    89 #endif //__DRAWABLECACHE_H__