/*

* Copyright (c) 2010 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 CXESNAPSHOTCONTROL_H

#define CXESNAPSHOTCONTROL_H

#include <QObject>

#include "cxeerror.h"

#include "cxenamespace.h"

class CxeCameraDevice;

class CxeSnapshotControlPrivate;

/*!

* Snapshot control class.

*/

class CxeSnapshotControl : public QObject

{

    Q_OBJECT

public:

    // State Machine

    enum State {

        //! Idle, snapshot not active.

        Idle   = 0x01,

        //! Active, snapshot events provided after successful capture.

        Active = 0x02

    };

    explicit CxeSnapshotControl(CxeCameraDevice &device);

    virtual ~CxeSnapshotControl();

public:

    State state() const;

    QSize calculateSnapshotSize(const QSize& displaySize, Cxe::AspectRatio aspectRatio) const;

    void start(const QSize &size);

    void stop();

signals:

    void stateChanged(CxeSnapshotControl::State newState, CxeError::Id status);

    void snapshotReady(CxeError::Id status, const QImage &snapshot);

public slots:

    void handleCameraEvent(int id, int error);

private:

    CxeSnapshotControlPrivate *d;

    Q_DISABLE_COPY(CxeSnapshotControl)

    friend class CxeSnapshotControlPrivate;

};

Q_DECLARE_METATYPE(CxeSnapshotControl::State)

#endif // CXESNAPSHOTCONTROL_H