/*

* Copyright (c) 2004-2008 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:  Class for providing effect context for effect plugins.

*

*/

#ifndef AKNSALEFFECTCONTEXT_H

#define AKNSALEFFECTCONTEXT_H

// INCLUDES

#include <AknsRlEffectContext.h>

// CONSTANTS

const TInt KAknsAlEffectContextLayerN = 5;

// CLASS DECLARATION

/**

* Internal class for providing effect context for effect plugins used in

* animations. This class is used by AnimatorBmp for managing input/output

* layers during the lifetime of the animator.

*

* @since 3.0

*/

NONSHARABLE_CLASS( CAknsAlEffectContext ):

    public CBase, public MAknsRlEffectContext

    {

    protected: // Protected constructors

        CAknsAlEffectContext();

    public: // New methods

        static CAknsAlEffectContext* NewL();

        ~CAknsAlEffectContext();

        void ConfigureL( const TSize& aSize,

                         TDisplayMode aRgbMode,

                         TInt aInputLayerIndex,

                         TInt aInputLayerMode );

        /// @return May return NULL if the bitmap does not exist.

        CFbsBitmap* RgbBitmap( TInt aLayerIndex ) const;

        /// @return May return NULL if the bitmap does not exist.

        CFbsBitmap* AlphaBitmap( TInt aLayerIndex ) const;

        CFbsBitGc* RgbGc( TInt aIndex ) const;

        CFbsBitGc* AlphaGc( TInt aIndex ) const;

        /**

        * Releases all layers but the output layer.

        */

        void ReleaseInputLayers( TInt aOutputLayerIndex );

        void SetSkinSrvSession( RAknsSrvSession* aSession );

    public: // From MAknsRlEffectContext

        const TSize LayerSize();

        void GetLayerDataL( TAknsRlLayerData& aData, const TInt aLayerIndex,

                            const TInt aLayerStatus, const TBool aInitialize );

        RAknsSrvSession* GetSkinSrvSession();

    private: // New methods

        void CreateIfNeededL( TInt aLayerIndex, const TInt aLayerStatus,

                              TBool aInitialize );

        void ReleaseLayers();

        void ReleaseLayer( TInt aLayerIndex );

    private:

        RAknsSrvSession* iSession; // Referenced only

        TSize iLayerSize;

        TDisplayMode iRgbMode;

        TAknsRlLayerData iLayers[KAknsAlEffectContextLayerN];

    };

#endif // AKNSALEFFECTCONTEXT_H

// End of File