qnmeapositioninfosource_p.h

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// Copyright (C) 2018 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

// Qt-Security score:significant reason:default

#ifndef QNMEAPOSITIONINFOSOURCE_P_H

#define QNMEAPOSITIONINFOSOURCE_P_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists purely as an

// implementation detail.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#include "qnmeapositioninfosource.h"

#include "qgeopositioninfo.h"

#include <QObject>

#include <QQueue>

#include <QPointer>

#include <QtCore/qtimer.h>

#include <QtCore/private/qglobal_p.h>

QT_BEGIN_NAMESPACE

class QBasicTimer;

class QTimerEvent;

class QTimer;

class QNmeaReader;

struct QPendingGeoPositionInfo

    QGeoPositionInfo info;

    bool hasFix;

};

class QNmeaPositionInfoSourcePrivate : public QObject

    Q_OBJECT

public:

    QNmeaPositionInfoSourcePrivate(QNmeaPositionInfoSource *parent, QNmeaPositionInfoSource::UpdateMode updateMode);

    ~QNmeaPositionInfoSourcePrivate();

    void startUpdates();

    void stopUpdates();

    void requestUpdate(int msec);

    bool parsePosInfoFromNmeaData(QByteArrayView data,

                                  QGeoPositionInfo *posInfo,

                                  bool *hasFix);

    void notifyNewUpdate(QGeoPositionInfo *update, bool fixStatus);

    QNmeaPositionInfoSource::UpdateMode m_updateMode;

    QPointer<QIODevice> m_device;

    QGeoPositionInfo m_lastUpdate;

    bool m_invokedStart;

    QGeoPositionInfoSource::Error m_positionError;

    double m_userEquivalentRangeError;

public Q_SLOTS:

    void readyRead();

protected:

    void timerEvent(QTimerEvent *event) override;

private Q_SLOTS:

    void emitPendingUpdate();

    void sourceDataClosed();

    void updateRequestTimeout();

private:

    bool openSourceDevice();

    bool initialize();

    void prepareSourceDevice();

    void emitUpdated(const QGeoPositionInfo &update);

    QNmeaPositionInfoSource *m_source;

    QNmeaReader *m_nmeaReader;

    QGeoPositionInfo m_pendingUpdate;

    QDate m_currentDate;

    QBasicTimer *m_updateTimer; // the timer used in startUpdates()

    QTimer *m_requestTimer; // the timer used in requestUpdate()

    qreal m_horizontalAccuracy;

    qreal m_verticalAccuracy;

    bool m_noUpdateLastInterval;

    bool m_updateTimeoutSent;

    bool m_connectedReadyRead;

};

class QNmeaReader

public:

    explicit QNmeaReader(QNmeaPositionInfoSourcePrivate *sourcePrivate)

            : m_proxy(sourcePrivate) {}

    virtual ~QNmeaReader();

    virtual void readAvailableData() = 0;

protected:

    QNmeaPositionInfoSourcePrivate *m_proxy;

};

class QNmeaRealTimeReader : public QNmeaReader

public:

    explicit QNmeaRealTimeReader(QNmeaPositionInfoSourcePrivate *sourcePrivate);

    ~QNmeaRealTimeReader() override;

    void readAvailableData() override;

    void notifyNewUpdate();

    // Data members

    QGeoPositionInfo m_update;

    QDateTime m_lastPushedTS;

    bool m_updateParsed = false;

    bool m_hasFix = false;

    QTimer m_timer;

    int m_pushDelay = -1;

};

class QNmeaSimulatedReader : public QObject, public QNmeaReader

    Q_OBJECT

public:

    explicit QNmeaSimulatedReader(QNmeaPositionInfoSourcePrivate *sourcePrivate);

    ~QNmeaSimulatedReader();

    void readAvailableData() override;

protected:

    void timerEvent(QTimerEvent *event) override;

private Q_SLOTS:

    void simulatePendingUpdate();

private:

    bool setFirstDateTime();

    void processNextSentence();

    QQueue<QPendingGeoPositionInfo> m_pendingUpdates;

    QByteArray m_nextLine;

    int m_currTimerId;

    bool m_hasValidDateTime;

};

QT_END_NAMESPACE

#endif