| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
|---|
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
|---|
| 3 | |
|---|
| 4 | #ifndef QSENSORBACKEND_H |
|---|
| 5 | #define QSENSORBACKEND_H |
|---|
| 6 | |
|---|
| 7 | #include <QtSensors/qsensor.h> |
|---|
| 8 | #include <QtSensors/qsensormanager.h> |
|---|
| 9 | |
|---|
| 10 | QT_BEGIN_NAMESPACE |
|---|
| 11 | |
|---|
| 12 | class QSensorBackendPrivate; |
|---|
| 13 | |
|---|
| 14 | class Q_SENSORS_EXPORT QSensorBackend : public QObject |
|---|
| 15 | { |
|---|
| 16 | Q_OBJECT |
|---|
| 17 | public: |
|---|
| 18 | explicit QSensorBackend(QSensor *sensor, QObject *parent = nullptr); |
|---|
| 19 | virtual ~QSensorBackend(); |
|---|
| 20 | |
|---|
| 21 | virtual void start() = 0; |
|---|
| 22 | virtual void stop() = 0; |
|---|
| 23 | |
|---|
| 24 | virtual bool isFeatureSupported(QSensor::Feature feature) const; |
|---|
| 25 | |
|---|
| 26 | // used by the backend to set metadata properties |
|---|
| 27 | void addDataRate(qreal min, qreal max); |
|---|
| 28 | void setDataRates(const QSensor *otherSensor); |
|---|
| 29 | void addOutputRange(qreal min, qreal max, qreal accuracy); |
|---|
| 30 | void setDescription(const QString &description); |
|---|
| 31 | |
|---|
| 32 | template <typename T> |
|---|
| 33 | T *setReading(T *readingClass) |
|---|
| 34 | { |
|---|
| 35 | if (!readingClass) |
|---|
| 36 | readingClass = new T(this); |
|---|
| 37 | setReadings(device: readingClass, filter: new T(this), cache: new T(this)); |
|---|
| 38 | return readingClass; |
|---|
| 39 | } |
|---|
| 40 | |
|---|
| 41 | QSensorReading *reading() const; |
|---|
| 42 | QSensor *sensor() const; |
|---|
| 43 | |
|---|
| 44 | // used by the backend to inform us of events |
|---|
| 45 | void newReadingAvailable(); |
|---|
| 46 | void sensorStopped(); |
|---|
| 47 | void sensorBusy(bool busy = true); |
|---|
| 48 | void sensorError(int error); |
|---|
| 49 | |
|---|
| 50 | private: |
|---|
| 51 | void setReadings(QSensorReading *device, QSensorReading *filter, QSensorReading *cache); |
|---|
| 52 | |
|---|
| 53 | Q_DECLARE_PRIVATE(QSensorBackend) |
|---|
| 54 | Q_DISABLE_COPY(QSensorBackend) |
|---|
| 55 | }; |
|---|
| 56 | |
|---|
| 57 | QT_END_NAMESPACE |
|---|
| 58 | |
|---|
| 59 | #endif |
|---|
| 60 | |
|---|
| 61 | |
|---|
