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39
40#ifndef QSHAKERECOGNIZER_H
41#define QSHAKERECOGNIZER_H
42
43#include <QDebug>
44
45#include <QtSensors/qsensorgesturerecognizer.h>
46
47#include "qtsensorgesturesensorhandler.h"
48
49QT_BEGIN_NAMESPACE
50
51struct ShakeData {
52 qreal x;
53 qreal y;
54 qreal z;
55};
56
57class QShake2SensorGestureRecognizer : public QSensorGestureRecognizer
58{
59 Q_OBJECT
60
61public:
62
63 enum ShakeDirection {
64 ShakeUndefined = 0,
65 ShakeLeft,
66 ShakeRight,
67 ShakeUp,
68 ShakeDown
69 };
70
71 QShake2SensorGestureRecognizer(QObject *parent = 0);
72 ~QShake2SensorGestureRecognizer();
73
74 void create() override;
75
76 QString id() const override;
77 bool start() override;
78 bool stop() override;
79 bool isActive() override;
80
81 int timerTimeout;
82
83
84Q_SIGNALS:
85 void shakeLeft();
86 void shakeRight();
87 void shakeUp();
88 void shakeDown();
89
90private slots:
91 void accelChanged(QAccelerometerReading *reading);
92 void timeout();
93
94
95private:
96 QAccelerometerReading *accelReading;
97
98 bool active;
99
100 ShakeDirection shakeDirection;
101
102 ShakeData prevData;
103 ShakeData currentData;
104
105 bool checkForShake(ShakeData prevSensorData, ShakeData currentSensorData, qreal threshold);
106 bool shaking;
107 int shakeCount;
108 int threshold;
109
110 bool isNegative(qreal num);
111 qreal lapsedTime;
112 quint64 lastTimestamp;
113 bool timerActive;
114};
115QT_END_NAMESPACE
116#endif // QSHAKERECOGNIZER_H
117

source code of qtsensors/src/plugins/sensorgestures/qtsensors/qshake2recognizer.h