97 lines
3.3 KiB
C++
97 lines
3.3 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the QtSensors module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 3 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL3 included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 3 requirements
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** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 2.0 or (at your option) the GNU General
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** Public license version 3 or any later version approved by the KDE Free
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** Qt Foundation. The licenses are as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-2.0.html and
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** https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QSENSORBACKEND_H
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#define QSENSORBACKEND_H
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#include <QtSensors/qsensor.h>
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#include <QtSensors/qsensormanager.h>
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QT_BEGIN_NAMESPACE
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class QSensorBackendPrivate;
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class Q_SENSORS_EXPORT QSensorBackend : public QObject
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{
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Q_OBJECT
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public:
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explicit QSensorBackend(QSensor *sensor, QObject *parent = Q_NULLPTR);
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virtual ~QSensorBackend();
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virtual void start() = 0;
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virtual void stop() = 0;
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virtual bool isFeatureSupported(QSensor::Feature feature) const;
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// used by the backend to set metadata properties
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void addDataRate(qreal min, qreal max);
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void setDataRates(const QSensor *otherSensor);
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void addOutputRange(qreal min, qreal max, qreal accuracy);
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void setDescription(const QString &description);
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template <typename T>
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T *setReading(T *readingClass)
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{
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if (!readingClass)
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readingClass = new T(this);
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setReadings(readingClass, new T(this), new T(this));
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return readingClass;
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}
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QSensorReading *reading() const;
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QSensor *sensor() const;
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// used by the backend to inform us of events
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void newReadingAvailable();
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void sensorStopped();
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void sensorBusy();
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void sensorError(int error);
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private:
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void setReadings(QSensorReading *device, QSensorReading *filter, QSensorReading *cache);
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Q_DECLARE_PRIVATE(QSensorBackend)
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Q_DISABLE_COPY(QSensorBackend)
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};
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QT_END_NAMESPACE
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#endif
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