src/sensors/qtapsensor.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 04 Oct 2010 01:37:06 +0300
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permissions -rw-r--r--
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the Qt Mobility Components.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file.  Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights.  These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qtapsensor.h"
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#include "qtapsensor_p.h"
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QTM_BEGIN_NAMESPACE
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IMPLEMENT_READING(QTapReading)
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/*!
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    \class QTapReading
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    \ingroup sensors_reading
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    \brief The QTapReading class represents one reading from the
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           tap sensor.
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    \section2 QTapReading Units
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    The tap sensor registers tap events in one of the six directions.
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    There are 3 axes that originate from the phone. They are arranged as follows.
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    \image sensors-coordinates2.jpg
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    By default it returns only double tap events. The QTapSensor::returnDoubleTapEvents property
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    must be set to false to return individual tap events.
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*/
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/*!
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    \enum QTapReading::TapDirection
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    The tap direction is reported as one of the six directions (X, Y, Z, positive and negative).
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    There are 3 flags that you can use if you only care about the axis in use.
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    \value Undefined This value means that the direction is unknown.
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    \value X     This flag is set if the tap was along the X axis.
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    \value Y     This flag is set if the tap was along the Y axis.
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    \value Z     This flag is set if the tap was along the Z axis.
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    \value X_Pos This value is returned if the tap was towards the positive X direction.
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    \value Y_Pos This value is returned if the tap was towards the positive Y direction.
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    \value Z_Pos This value is returned if the tap was towards the positive Z direction.
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    \value X_Neg This value is returned if the tap was towards the negative X direction.
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    \value Y_Neg This value is returned if the tap was towards the negative Y direction.
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    \value Z_Neg This value is returned if the tap was towards the negative Z direction.
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*/
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/*!
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    \property QTapReading::tapDirection
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    \brief the direction of the tap.
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    \sa {QTapReading Units}
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*/
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QTapReading::TapDirection QTapReading::tapDirection() const
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{
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    return static_cast<QTapReading::TapDirection>(d->tapDirection);
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}
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/*!
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    Sets the tap direction to \a tapDirection.
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*/
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void QTapReading::setTapDirection(QTapReading::TapDirection tapDirection)
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{
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    d->tapDirection = tapDirection;
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}
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/*!
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    \property QTapReading::doubleTap
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    \brief a value indicating if there was a single or double tap.
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    \list
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    \o true - double tap
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    \o false - single tap
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    \endlist
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    \sa {QTapReading Units}
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*/
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bool QTapReading::isDoubleTap() const
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{
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    return d->doubleTap;
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}
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/*!
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    Sets the double tap status of the reading to \a doubleTap.
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*/
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void QTapReading::setDoubleTap(bool doubleTap)
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{
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    d->doubleTap = doubleTap;
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}
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// =====================================================================
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/*!
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    \class QTapFilter
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    \ingroup sensors_filter
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    \brief The QTapFilter class is a convenience wrapper around QSensorFilter.
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    The only difference is that the filter() method features a pointer to QTapReading
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    instead of QSensorReading.
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*/
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/*!
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    \fn QTapFilter::filter(QTapReading *reading)
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    Called when \a reading changes. Returns false to prevent the reading from propagating.
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    \sa QSensorFilter::filter()
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*/
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char const * const QTapSensor::type("QTapSensor");
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/*!
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    \class QTapSensor
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    \ingroup sensors_type
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    \brief The QTapSensor class is a convenience wrapper around QSensor.
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    The only behavioural difference is that this class sets the type properly.
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    This class also features a reading() function that returns a QTapReading instead of a QSensorReading.
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    For details about how the sensor works, see \l QTapReading.
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    \sa QTapReading
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*/
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/*!
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    \fn QTapSensor::QTapSensor(QObject *parent)
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    Construct the sensor as a child of \a parent.
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*/
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/*!
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    \fn QTapSensor::~QTapSensor()
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    Destroy the sensor. Stops the sensor if it has not already been stopped.
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*/
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/*!
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    \fn QTapSensor::reading() const
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    Returns the reading class for this sensor.
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    \sa QSensor::reading()
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*/
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/*!
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    \property QTapSensor::returnDoubleTapEvents
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    \brief a value indicating if double tap events should be reported.
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    Set to true (the default) to have the sensor report only on double tap events.
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    Set to false to have the sensor report only on individual tap events.
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    It is not possible to have the sensor report both single and double tap events.
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    If both are needed the app should create 2 sensor objects.
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    Note that you must access this property via QObject::property() and QObject::setProperty().
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    The property must be set before calling start().
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*/
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#include "moc_qtapsensor.cpp"
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QTM_END_NAMESPACE
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