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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