qtmobility/plugins/sensors/maemo6/maemo6magnetometer.cpp
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     1 /****************************************************************************
       
     2 **
       
     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
       
     4 ** All rights reserved.
       
     5 ** Contact: Nokia Corporation (qt-info@nokia.com)
       
     6 **
       
     7 ** This file is part of the Qt Mobility Components.
       
     8 **
       
     9 ** $QT_BEGIN_LICENSE:LGPL$
       
    10 ** No Commercial Usage
       
    11 ** This file contains pre-release code and may not be distributed.
       
    12 ** You may use this file in accordance with the terms and conditions
       
    13 ** contained in the Technology Preview License Agreement accompanying
       
    14 ** this package.
       
    15 **
       
    16 ** GNU Lesser General Public License Usage
       
    17 ** Alternatively, this file may be used under the terms of the GNU Lesser
       
    18 ** General Public License version 2.1 as published by the Free Software
       
    19 ** Foundation and appearing in the file LICENSE.LGPL included in the
       
    20 ** packaging of this file.  Please review the following information to
       
    21 ** ensure the GNU Lesser General Public License version 2.1 requirements
       
    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
       
    23 **
       
    24 ** In addition, as a special exception, Nokia gives you certain additional
       
    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception
       
    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
       
    27 **
       
    28 ** If you have questions regarding the use of this file, please contact
       
    29 ** Nokia at qt-info@nokia.com.
       
    30 **
       
    31 **
       
    32 **
       
    33 **
       
    34 **
       
    35 **
       
    36 **
       
    37 **
       
    38 ** $QT_END_LICENSE$
       
    39 **
       
    40 ****************************************************************************/
       
    41 
       
    42 #include "maemo6magnetometer.h"
       
    43 
       
    44 const char *maemo6magnetometer::id("maemo6.magnetometer");
       
    45 bool maemo6magnetometer::m_initDone = false;
       
    46 
       
    47 maemo6magnetometer::maemo6magnetometer(QSensor *sensor)
       
    48     : maemo6sensorbase(sensor), m_sensor(sensor)
       
    49 {
       
    50     setReading<QMagnetometerReading>(&m_reading);
       
    51 
       
    52     if (!m_initDone) {
       
    53         qDBusRegisterMetaType<MagneticField>();
       
    54         initSensor<MagnetometerSensorChannelInterface>("magnetometersensor");
       
    55 
       
    56         if (m_sensorInterface)
       
    57             QObject::connect(static_cast<const MagnetometerSensorChannelInterface*>(m_sensorInterface), SIGNAL(dataAvailable(const MagneticField&)), this, SLOT(slotDataAvailable(const MagneticField&)));
       
    58         else
       
    59             qWarning() << "Unable to initialize magnetometer sensor.";
       
    60 
       
    61         // metadata
       
    62         setDescription(QLatin1String("Magnetic flux density measured in teslas"));
       
    63 
       
    64         m_initDone = true;
       
    65     }
       
    66 }
       
    67 
       
    68 void maemo6magnetometer::slotDataAvailable(const MagneticField& data)
       
    69 {
       
    70     QVariant v = m_sensor->property("returnGeoValues");
       
    71     if (v.isValid() && v.toBool()) {
       
    72         m_reading.setX(data.x());
       
    73         m_reading.setY(data.y());
       
    74         m_reading.setZ(data.z());
       
    75         m_reading.setCalibrationLevel(data.level());
       
    76     } else {
       
    77         m_reading.setX(data.rx());
       
    78         m_reading.setY(data.ry());
       
    79         m_reading.setZ(data.rz());
       
    80         m_reading.setCalibrationLevel(1);
       
    81     }
       
    82     //m_reading.setTimestamp(data.timestamp());
       
    83     m_reading.setTimestamp(createTimestamp()); //TODO: use correct timestamp
       
    84     newReadingAvailable();
       
    85 }