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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QSENSORBACKEND_H
#define QSENSORBACKEND_H
#include <QtSensors/qsensor.h>
#include <QtSensors/qsensormanager.h>
QT_BEGIN_NAMESPACE
class QSensorBackendPrivate;
class Q_SENSORS_EXPORT QSensorBackend : public QObject
{
Q_OBJECT
public:
explicit QSensorBackend(QSensor *sensor, QObject *parent = nullptr);
virtual ~QSensorBackend();
virtual void start() = 0;
virtual void stop() = 0;
virtual bool isFeatureSupported(QSensor::Feature feature) const;
// used by the backend to set metadata properties
void addDataRate(qreal min, qreal max);
void setDataRates(const QSensor *otherSensor);
void addOutputRange(qreal min, qreal max, qreal accuracy);
void setDescription(const QString &description);
template <typename T>
T *setReading(T *readingClass)
{
if (!readingClass)
readingClass = new T(this);
setReadings(readingClass, new T(this), new T(this));
return readingClass;
}
QSensorReading *reading() const;
QSensor *sensor() const;
// used by the backend to inform us of events
void newReadingAvailable();
void sensorStopped();
void sensorBusy(bool busy = true);
void sensorError(int error);
private:
void setReadings(QSensorReading *device, QSensorReading *filter, QSensorReading *cache);
Q_DECLARE_PRIVATE(QSensorBackend)
Q_DISABLE_COPY(QSensorBackend)
};
QT_END_NAMESPACE
#endif
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