/*

* Copyright (c) 2006 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 MCCSCREEN_H

#define MCCSCREEN_H

#include <w32std.h>

class CCamera;

class MCameraDirectViewFinder;

/**

* Screen for viewfinder, may use bitmap viewfinder or direct viewfinder

* depending on supported camera vf modes.

* 

*/

class CMccScreen : public CBase

    {

    public:

        enum TMccScreenType

            {

            EBitmapScreen,

            EDirectScreen

            };

    public:

        static CMccScreen* NewL( CCamera* aCamera,

                                 TPoint aPos, 

                                 TSize aArea, 

                                 TInt aIndex, 

                                 TInt aWindowOrdinalPosition,

                                 TInt aWindowOrdinalPriority );

        ~CMccScreen();

    public:

        virtual void StartL();

        virtual void Stop();

        virtual void Draw( CFbsBitmap& aFrame );

        virtual TInt SetCamera( CCamera* aCamera );

    protected:

        void StopCamera();

        TBool VfStartPossible();

        void ConstructL();

        CMccScreen( TMccScreenType aScreenType,

                    CCamera* aCamera,

                    TPoint aPos, 

                    TSize aArea, 

                    TInt aIndex, 

                    TInt aWindowOrdinalPosition,

                    TInt aWindowOrdinalPriority );

    protected:

        CCamera* iCamera;    

        TInt iDeviceIndex;

        TPoint iPosition;

        TSize iArea;

        TInt iWindowOrdinalPosition;

        TInt iWindowOrdinalPriority; 

        RWsSession           iRwSession;

        RWindowGroup*        iRwGroup;

        RWindow*             iRw;

        CWsScreenDevice*     iDev;

        CWindowGc* iGraphicsContext;

        TMccScreenType iScreenType;

#ifdef TEST_EUNIT

    friend class UT_CMccCameraHandler;

    friend class UT_CMccScreen;

#endif

};

/**

* Bitamp viewfinder screen. Uses DSA to draw vf bitmaps.

* 

*/

class CMccScreenBitmap : public CMccScreen, 

                         public MDirectScreenAccess

	{

	public:

		static CMccScreenBitmap* NewL( CCamera* aCamera,

                                       TPoint aPos, 

                                       TSize aArea, 

                                       TInt aIndex, 

                                       TInt aWindowOrdinalPosition,

                                       TInt aWindowOrdinalPriority );

		~CMccScreenBitmap();

	public: // From CMccScreen

		virtual void StartL();

		virtual void Stop();

		virtual void Draw( CFbsBitmap& aFrame );

	private:

	    void ConstructL();

	    CMccScreenBitmap( CCamera* aCamera,

                    TPoint aPos, 

                    TSize aArea, 

                    TInt aIndex, 

                    TInt aWindowOrdinalPosition,

                    TInt aWindowOrdinalPriority );

		void Restart( RDirectScreenAccess::TTerminationReasons aReason );

		void AbortNow( RDirectScreenAccess::TTerminationReasons aReason );

		void StartCameraL();

		void StartDsaL();

		TPoint UpdateViewFinderArea( TSize aViewFinderImageSize );

        void DoDraw( CFbsBitmap& aFrame );

        void DoScreenDeviceUpdate();

        void AttachFrameL( CFbsBitmap* aFrame );

        void DetachFrame();

        void StoreFrameDataL( CFbsBitmap& aFrame );

        CFbsBitmap* RestoreFrameLC();

		void DrawBlackBorders();

	private:

		CDirectScreenAccess* iDirectScreenAccess;

		CFbsBitGc* iGc;

		RRegion* iRegion;

		CFbsScreenDevice* iFbsDev;

		TRect iViewFinderImageRect;	

		TBool iFirstImageDrawn;

		CFbsBitmap* iAttachedFrame;

		TBool iAborted;

	    TSize iPausedFrameSize;

	    TDisplayMode iPausedFrameDisplayMode;

	    HBufC8* iPausedFrameData;

	    TBool iStopped;

#ifdef TEST_EUNIT

    friend class UT_CMccCameraHandler;

    friend class UT_CMccScreen;

#endif

	};

/**

* Direct viewfinder screen.

* 

*/

class CMccScreenDirect : public CMccScreen

    {

    public:

        static CMccScreenDirect* NewL( CCamera* aCamera,

                                       TPoint aPos, 

                                       TSize aArea, 

                                       TInt aIndex, 

                                       TInt aWindowOrdinalPosition,

                                       TInt aWindowOrdinalPriority );

        ~CMccScreenDirect();

    public: // From CMccScreen

        virtual void StartL();

        virtual void Stop();

        virtual TInt SetCamera( CCamera* aCamera );

    private:

        void ConstructL();

        CMccScreenDirect( 

                    CCamera* aCamera,

                    TPoint aPos, 

                    TSize aArea, 

                    TInt aIndex, 

                    TInt aWindowOrdinalPosition,

                    TInt aWindowOrdinalPriority );

        void StartDirectViewFinderL();

        TInt HandleDirectViewFinder();

    private:

        MCameraDirectViewFinder* iDirectViewFinder;

#ifdef TEST_EUNIT

    friend class UT_CMccCameraHandler;

    friend class UT_CMccScreen;

#endif

    };

#endif