src/sensors/qcompass.cpp
changeset 0 876b1a06bc25
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/sensors/qcompass.cpp	Wed Aug 25 15:49:42 2010 +0300
@@ -0,0 +1,175 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Mobility Components.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qcompass.h"
+#include "qcompass_p.h"
+
+QTM_BEGIN_NAMESPACE
+
+IMPLEMENT_READING(QCompassReading)
+
+/*!
+    \class QCompassReading
+    \ingroup sensors_reading
+
+    \brief The QCompassReading class represents one reading from a
+           compass.
+
+    \section2 QCompassReading Units
+    The compass returns the azimuth of the device as degrees from
+    magnetic north in a clockwise direction based on the top of the UI.
+    There is also a value to indicate the calibration status of the device.
+    If the device is not calibrated the azimuth may not be accurate.
+
+    Digital compasses are susceptible to magnetic interference and may need
+    calibration after being placed near anything that emits a magnetic force.
+    Accuracy of the compass can be affected by any ferrous materials that are nearby.
+
+    The calibration status of the device is measured as a number from 0 to 1.
+    A value of 1 is the highest level that the device can support and 0 is
+    the worst.
+*/
+
+/*!
+    \property QCompassReading::azimuth
+    \brief the azimuth of the device.
+
+    Measured in degrees from magnetic north in a clockwise direction based
+    the top of the UI.
+    \sa {QCompassReading Units}
+*/
+
+qreal QCompassReading::azimuth() const
+{
+    return d->azimuth;
+}
+
+/*!
+    Sets the \a azimuth of the device.
+    
+    \sa {QCompassReading Units}
+*/
+void QCompassReading::setAzimuth(qreal azimuth)
+{
+    d->azimuth = azimuth;
+}
+
+/*!
+    \property QCompassReading::calibrationLevel
+    \brief the calibration level of the reading.
+
+    Measured as a value from 0 to 1 with higher values being better.
+    \sa {QCompassReading Units}
+*/
+
+qreal QCompassReading::calibrationLevel() const
+{
+    return d->calibrationLevel;
+}
+
+/*!
+    Sets the calibration level of the reading to \a calibrationLevel.
+*/
+void QCompassReading::setCalibrationLevel(qreal calibrationLevel)
+{
+    d->calibrationLevel = calibrationLevel;
+}
+
+// =====================================================================
+
+/*!
+    \class QCompassFilter
+    \ingroup sensors_filter
+
+    \brief The QCompassFilter class is a convenience wrapper around QSensorFilter.
+
+    The only difference is that the filter() method features a pointer to QCompassReading
+    instead of QSensorReading.
+*/
+
+/*!
+    \fn QCompassFilter::filter(QCompassReading *reading)
+
+    Called when \a reading changes. Returns false to prevent the reading from propagating.
+
+    \sa QSensorFilter::filter()
+*/
+
+char const * const QCompass::type("QCompass");
+
+/*!
+    \class QCompass
+    \ingroup sensors_type
+
+    \brief The QCompass class is a convenience wrapper around QSensor.
+
+    The only behavioural difference is that this class sets the type properly.
+
+    This class also features a reading() function that returns a QCompassReading instead of a QSensorReading.
+
+    For details about how the sensor works, see \l QCompassReading.
+
+    \sa QCompassReading
+*/
+
+/*!
+    \fn QCompass::QCompass(QObject *parent)
+
+    Construct the sensor as a child of \a parent.
+*/
+
+/*!
+    \fn QCompass::~QCompass()
+
+    Destroy the sensor. Stops the sensor if it has not already been stopped.
+*/
+
+/*!
+    \fn QCompass::reading() const
+
+    Returns the reading class for this sensor.
+
+    \sa QSensor::reading()
+*/
+
+#include "moc_qcompass.cpp"
+QTM_END_NAMESPACE
+