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Diffstat (limited to 'src/plugins/sensorgestures/qtsensors/qshake2recognizer.cpp')
| -rw-r--r-- | src/plugins/sensorgestures/qtsensors/qshake2recognizer.cpp | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/src/plugins/sensorgestures/qtsensors/qshake2recognizer.cpp b/src/plugins/sensorgestures/qtsensors/qshake2recognizer.cpp new file mode 100644 index 00000000..4c491fb8 --- /dev/null +++ b/src/plugins/sensorgestures/qtsensors/qshake2recognizer.cpp @@ -0,0 +1,205 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtSensors module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** 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. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QDebug> +#include <QTimer> + +#include "qshake2recognizer.h" + +QT_BEGIN_NAMESPACE + +QShake2SensorGestureRecognizer::QShake2SensorGestureRecognizer(QObject *parent) + : QSensorGestureRecognizer(parent) + , active(0) +{ + pXaxis = 0;nXaxis = 0; + pYaxis = 0;nYaxis = 0; + pZaxis = 0;nZaxis = 0; + timerTimeout = 750; +} + +QShake2SensorGestureRecognizer::~QShake2SensorGestureRecognizer() +{ +} + +void QShake2SensorGestureRecognizer::create() +{ + accel = new QAccelerometer(this); + accel->connectToBackend(); + timer = new QTimer(this); + + qoutputrangelist outputranges = accel->outputRanges(); + + if (outputranges.count() > 0) + accelRange = (int)(outputranges.at(0).maximum *2) / 9.8; //approx range in g's + else + accelRange = 4; //this should never happen + + connect(timer,SIGNAL(timeout()),this,SLOT(timeout())); + timer->setSingleShot(true); + timer->setInterval(timerTimeout); + + +} + +bool QShake2SensorGestureRecognizer::start() +{ + connect(accel,SIGNAL(readingChanged()),this,SLOT(accelChanged())); + active = accel->start(); + + return active; +} + +bool QShake2SensorGestureRecognizer::stop() +{ + accel->stop(); + active = accel->isActive(); + disconnect(accel,SIGNAL(readingChanged()),this,SLOT(accelChanged())); + return !active; +} + +bool QShake2SensorGestureRecognizer::isActive() +{ + return active; +} + +QString QShake2SensorGestureRecognizer::id() const +{ + return QString("QtSensors.shake2"); +} + +#define NUMBER_SHAKES 3 +void QShake2SensorGestureRecognizer::accelChanged() +{ + qreal x = accel->reading()->x(); + qreal xdiff = pXaxis - x; + qreal y = accel->reading()->y(); + qreal ydiff = pYaxis - y; + qreal z = accel->reading()->z(); + qreal zdiff = pZaxis - z; + + if (abs(xdiff) > (5 * accelRange)) { + + if (shakeDirection == QShake2SensorGestureRecognizer::ShakeUndefined && nXaxis == 0) { + if (xdiff < 0) + shakeDirection = QShake2SensorGestureRecognizer::ShakeLeft; + else + shakeDirection = QShake2SensorGestureRecognizer::ShakeRight; + } + + nXaxis++; + if (timer->isActive()) { + timer->stop(); + } + timer->start(); + } + if (abs(ydiff) > (5 * accelRange)) { + if (nYaxis == 0) { + if (shakeDirection == QShake2SensorGestureRecognizer::ShakeUndefined && ydiff < 0) + shakeDirection = QShake2SensorGestureRecognizer::ShakeDown; + else + shakeDirection = QShake2SensorGestureRecognizer::ShakeUp; + } + nYaxis++; + if (timer->isActive()) { + timer->stop(); + } + timer->start(); + } + if (abs(zdiff) > (5 * accelRange)) { + nZaxis++; + if (timer->isActive()) { + timer->stop(); + } + timer->start(); + } + + if (nYaxis + nZaxis + nXaxis >= NUMBER_SHAKES) { + + switch (shakeDirection) { + case QShake2SensorGestureRecognizer::ShakeLeft: + Q_EMIT shakeLeft(); + Q_EMIT detected("shakeLeft"); + break; + case QShake2SensorGestureRecognizer::ShakeRight: + Q_EMIT shakeRight(); + Q_EMIT detected("shakeRight"); + break; + case QShake2SensorGestureRecognizer::ShakeUp: + Q_EMIT shakeUp(); + Q_EMIT detected("shakeUp"); + break; + case QShake2SensorGestureRecognizer::ShakeDown: + Q_EMIT shakeDown(); + Q_EMIT detected("shakeDown"); + break; + + }; + if (timer->isActive()) { + timer->stop(); + } + timeout(); + } + pXaxis = x; + pYaxis = y; + pZaxis = z; +} + +void QShake2SensorGestureRecognizer::timeout() +{ + nXaxis = 0; + nYaxis = 0; + nZaxis = 0; + shakeDirection = QShake2SensorGestureRecognizer::ShakeUndefined; + +} + +int QShake2SensorGestureRecognizer::thresholdTime() const +{ + return timerTimeout; +} + +void QShake2SensorGestureRecognizer::setThresholdTime(int msec) +{ + timer->setInterval(msec); +} + +QT_END_NAMESPACE |