1 /*

     2 * Copyright (c) 2009 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 #ifndef CXESENSOREVENTHANDLER_H_

    18 #define CXESENSOREVENTHANDLER_H_

    19 

    20 #include <QObject>

    21 #include <QMetaType>

    22 

    23 #include "cxenamespace.h"

    24 

    25 

    26 /**

    27  * Sensor Event Handler implements basic sensor's events handling. It

    28  * automatically updates the clients intersted in knowing the sensor events

    29  * that is currently supported and used by camera app.

    30  *

    31  * All the supported sensor types are defined by enum "SensorType"

    32  * This class provides one signal which basically carries out corresponding sensor data for

    33  * the given sensor type.

    34  */

    35 class CxeSensorEventHandler : public QObject

    36 {

    37     Q_OBJECT

    38 

    39 public:

    40 

    41      // ! Sensor types handled and supported in cxengine.

    42     enum SensorType

    43         {

    44         //! Listening to orientation sensor events

    45         OrientationSensor

    46         };

    47 

    48     /**

    49     * Data read from sensor. The "type" of data embedded in QVariant is specific to sensor type.

    50     */

    51     virtual QVariant sensorData(CxeSensorEventHandler::SensorType type) = 0;

    52 

    53 public slots:

    54     /*!

    55         init sensors

    56     */

    57     virtual void init() = 0;

    58 

    59     /*!

    60         de-init sensors

    61     */

    62     virtual void deinit() = 0;

    63 

    64 signals:

    65     /*

    66     * A signal indicating that there is new sensor event data available.

    67     */

    68     void sensorEvent(CxeSensorEventHandler::SensorType type,QVariant data);

    69 

    70 protected:

    71     CxeSensorEventHandler() {} // protected empty contructor so that derived class construction works

    72 

    73 private:

    74     Q_DISABLE_COPY( CxeSensorEventHandler )

    75 };

    76 

    77 Q_DECLARE_METATYPE(Cxe::DeviceOrientation)

    78 

    79 #endif /* CXESENSOREVENTHANDLER_H_ */