/*

* Copyright (c) 2004 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:  

*

*/

#ifndef AKNINDICATORFADER_H

#define AKNINDICATORFADER_H

// INCLUDES

#include <coecntrl.h>

// FORWARD DECLARATIONS

class CAknIndicatorContainer;

class CFbsBitmap;

class CFbsBitmapDevice;

class CFbsBitGc;

// CLASS DECLARATION

/**

* This class is not intended for further derivation.

*

* @since 2.8

*

* @internal

*/

NONSHARABLE_CLASS(CAknIndicatorFader) : public CBase

    {

    public:

        enum TFadeEffect

            {

            EEffectNone,

            EEffectFadeToLeft,

            EEffectFadeToRight

            };

    public: // Constructors and destructor

        /**

        * Two-phased constructor.

        *

        * @since 2.8

        *

        * @return Newly constructed object.

        */

        static CAknIndicatorFader* NewL(TSize aSize);

        /**

        * Destructor.

        */

        virtual ~CAknIndicatorFader();

    public: // New functions

        CFbsBitmap* FadeMask(CFbsBitmap* aOriginalMask) const;

        void SetActiveFadeEffect(TInt aActiveEffect);

        void SetActiveFadeSize(TSize aSize);

    private:

        /**

        * C++ default constructor.

        */

        CAknIndicatorFader(TSize aSize);

        /**

        * By default Symbian 2nd phase constructor is private.

        */

        void ConstructL();

        void CreateEffect(TInt aEffect);

        void InitializeL();

        TBool Initialized() const;

    private: // Data

        TSize              iSize;

        TInt               iActiveEffect;

        CFbsBitmap*        iFadingBitmap; // Used in fading

        CFbsBitmapDevice*  iFadingDevice;

        CFbsBitGc*         iFadingGc;

        CFbsBitmap*        iInvertingBitmap; // Used in inverting

        CFbsBitmapDevice*  iInvertingDevice;

        CFbsBitGc*         iInvertingGc;

        CFbsBitmap*        iInvertedBitmap; // Inverted bitmap

        CFbsBitmapDevice*  iInvertedDevice;

        CFbsBitGc*         iInvertedGc;

        CFbsBitmap*        iFadedBitmap; // Faded bitmap

        CFbsBitmapDevice*  iFaderDevice;

        CFbsBitGc*         iFaderGc;

    };

#endif // AKNINDICATORFADER_H

// End of File