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 #include "cxenamespace.h"

    24 

    25 class CxeCameraDevice;

    26 class CxeSnapshotControlPrivate;

    27 

    28 /*!

    29 * Snapshot control class.

    30 */

    31 class CxeSnapshotControl : public QObject

    32 {

    33     Q_OBJECT

    34 

    35 public:

    36 

    37     // State Machine

    38     enum State {

    39         //! Idle, snapshot not active.

    40         Idle   = 0x01,

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

    42         Active = 0x02

    43     };

    44 

    45 

    46     explicit CxeSnapshotControl(CxeCameraDevice &device);

    47     virtual ~CxeSnapshotControl();

    48 

    49 public:

    50     State state() const;

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

    52     void start(const QSize &size);

    53     void stop();

    54 

    55 signals:

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

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

    58 

    59 public slots:

    60     void handleCameraEvent(int id, int error);

    61 

    62 private:

    63     CxeSnapshotControlPrivate *d;

    64 

    65     Q_DISABLE_COPY(CxeSnapshotControl)

    66     friend class CxeSnapshotControlPrivate;

    67 };

    68 

    69 Q_DECLARE_METATYPE(CxeSnapshotControl::State)

    70 

    71 #endif // CXESNAPSHOTCONTROL_H