1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2016 The Qt Company Ltd. 4 ** Contact: https://www.qt.io/licensing/ 5 ** 6 ** This file is part of the QtSensors module of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:LGPL$ 9 ** Commercial License Usage 10 ** Licensees holding valid commercial Qt licenses may use this file in 11 ** accordance with the commercial license agreement provided with the 12 ** Software or, alternatively, in accordance with the terms contained in 13 ** a written agreement between you and The Qt Company. For licensing terms 14 ** and conditions see https://www.qt.io/terms-conditions. For further 15 ** information use the contact form at https://www.qt.io/contact-us. 16 ** 17 ** GNU Lesser General Public License Usage 18 ** Alternatively, this file may be used under the terms of the GNU Lesser 19 ** General Public License version 3 as published by the Free Software 20 ** Foundation and appearing in the file LICENSE.LGPL3 included in the 21 ** packaging of this file. Please review the following information to 22 ** ensure the GNU Lesser General Public License version 3 requirements 23 ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. 24 ** 25 ** GNU General Public License Usage 26 ** Alternatively, this file may be used under the terms of the GNU 27 ** General Public License version 2.0 or (at your option) the GNU General 28 ** Public license version 3 or any later version approved by the KDE Free 29 ** Qt Foundation. The licenses are as published by the Free Software 30 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 31 ** included in the packaging of this file. Please review the following 32 ** information to ensure the GNU General Public License requirements will 33 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and 34 ** https://www.gnu.org/licenses/gpl-3.0.html. 35 ** 36 ** $QT_END_LICENSE$ 37 ** 38 ****************************************************************************/ 39 40 #ifndef QSHAKERECOGNIZER_H 41 #define QSHAKERECOGNIZER_H 42 43 44 #include <QtSensors/QSensor> 45 #include <QtSensors/QAccelerometer> 46 #include <QtSensors/QAccelerometerFilter> 47 #include <QDebug> 48 #include <QTimer> 49 50 #include <QtSensors/qsensorgesturerecognizer.h> 51 52 struct AccelData { 53 qreal x; 54 qreal y; 55 qreal z; 56 }; 57 58 class QShakeSensorGestureRecognizer : public QSensorGestureRecognizer 59 { 60 Q_OBJECT 61 62 public: 63 64 QShakeSensorGestureRecognizer(QObject *parent = 0); 65 ~QShakeSensorGestureRecognizer(); 66 67 void create() override; 68 69 QString id() const override; 70 bool start() override; 71 bool stop() override; 72 bool isActive() override; 73 74 QTimer *timer; 75 int timerTimeout; 76 77 Q_SIGNALS: 78 void shake(); 79 80 private slots: 81 void accelChanged(); 82 void timeout(); 83 private: 84 QAccelerometer *accel; 85 bool active; 86 int accelRange; 87 88 AccelData prevData; 89 AccelData currentData; 90 91 bool checkForShake(AccelData prevSensorData, AccelData currentSensorData, qreal threshold); 92 bool shaking; 93 int shakeCount; 94 int threshold; 95 96 }; 97 98 #endif // QSHAKERECOGNIZER_H 99