/*

* Copyright (c) 2009 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 __CXEVIEWFINDERCONTROLSYMBIAN_H__

#define __CXEVIEWFINDERCONTROLSYMBIAN_H__

//  Include Files

#include <ecam.h>

#include "cxeviewfindercontrol.h"

#include "cxestatemachine.h"

#include "cxesettings.h"

//  Constants

//  Class Definitions

class CxeCameraDeviceControl;

class CxeCameraDevice;

class RWindowBase;

class CxeVideoContainer;

class CxeViewfinderControlSymbian : public CxeViewfinderControl,

                                    public CxeStateMachine

{

    Q_OBJECT

public:

    CxeViewfinderControlSymbian(CxeCameraDevice &cameraDevice,

            CxeCameraDeviceControl &mCameraDeviceControl);

    virtual ~CxeViewfinderControlSymbian();

public: // from base class

    void setWindow(WId windowId);

    /*

    * stops the view finder.

    */

    void stop();

    /*

    * Get current state of view finder control

    * returns one of Vf states defined above.

    */

    State state() const;

    /*

    * Start view finder

    * @returns CxeError::Id error code

    */

    CxeError::Id start();

    /*!

    * Returns Device's Display resolution

    */

    QSize deviceDisplayResolution() const;

protected: // from CxeStateMachine

    void handleStateChanged(int newStateId, CxeError::Id error);

protected:

    void initializeStates();

protected slots:

    // notifications when camera reference is changed

    void prepareForCameraDelete();

    void handleCameraAllocated(CxeError::Id error);

    void handleVfFrame(MCameraBuffer* buffer, int error);

    void prepareForRelease();

private:

    /*

    * Intializes viewfinder based on VF mode

    * returns CxeEngine Std error code

    */

    int initViewfinder();

    void createViewfinderWindowL();

    void releaseCurrentViewfinder();

private:

    // data members

    CxeCameraDevice &mCameraDevice;

    CxeCameraDeviceControl &mCameraDeviceControl;

    RWindowBase *mUiWindow;

    RWindowBase *mVideoWindow;

    CxeVideoContainer *mVideoContainer;

    TRect mWindowRect;

    CCamera::CCameraDirectViewFinder *mDirectViewfinder;

    bool mDirectViewfinderInUse;

};

#endif  // __CXEVIEWFINDERCONTROLSYMBIAN_H__