1 /*

     2 * Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 *

    16 */

    17 

    18 #ifndef CXESNAPSHOTCONTROL_H

    19 #define CXESNAPSHOTCONTROL_H

    20 

    21 #include <QObject>

    22 #include "cxeerror.h"

    23 

    24 class CxeCameraDevice;

    25 class CxeSnapshotControlPrivate;

    26 

    27 /*!

    28 * Snapshot control class.

    29 */

    30 class CxeSnapshotControl : public QObject

    31 {

    32     Q_OBJECT

    33 

    34 public:

    35 

    36     // State Machine

    37     enum State {

    38         //! Idle, snapshot not active.

    39         Idle   = 0x01,

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

    41         Active = 0x02

    42     };

    43 

    44 

    45     explicit CxeSnapshotControl(CxeCameraDevice &device);

    46     virtual ~CxeSnapshotControl();

    47 

    48 public:

    49     State state() const;

    50     QSize calculateSnapshotSize(const QSize& displaySize, const QSize& outputResolution) const;

    51     void start(const QSize& size);

    52     void stop();

    53 

    54 signals:

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

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

    57 

    58 public slots:

    59     void handleCameraEvent(int id, int error);

    60 

    61 private:

    62     CxeSnapshotControlPrivate *d;

    63 

    64     Q_DISABLE_COPY(CxeSnapshotControl)

    65     friend class CxeSnapshotControlPrivate;

    66 };

    67 

    68 Q_DECLARE_METATYPE(CxeSnapshotControl::State)

    69 

    70 #endif // CXESNAPSHOTCONTROL_H