qgeoareamonitor_polling.h

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// Copyright (C) 2021 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 QGEOAREAMONITORPOLLING_H

#define QGEOAREAMONITORPOLLING_H

#include <QtPositioning/qgeoareamonitorsource.h>

#include <QtPositioning/qgeopositioninfosource.h>

#include <QtCore/qmutex.h>

/**

 *  QGeoAreaMonitorPolling

*/

QT_BEGIN_NAMESPACE

class QGeoAreaMonitorPollingPrivate;

class QGeoAreaMonitorPolling : public QGeoAreaMonitorSource

    Q_OBJECT

public :

    explicit QGeoAreaMonitorPolling(QObject *parent = 0);

    ~QGeoAreaMonitorPolling();

    void setPositionInfoSource(QGeoPositionInfoSource *source) override;

    QGeoPositionInfoSource* positionInfoSource() const override;

    Error error() const override;

    bool startMonitoring(const QGeoAreaMonitorInfo &monitor) override;

    bool requestUpdate(const QGeoAreaMonitorInfo &monitor,

                       const char *signal) override;

    bool stopMonitoring(const QGeoAreaMonitorInfo &monitor) override;

    QList<QGeoAreaMonitorInfo> activeMonitors() const override;

    QList<QGeoAreaMonitorInfo> activeMonitors(const QGeoShape &region) const override;

    QGeoAreaMonitorSource::AreaMonitorFeatures supportedAreaMonitorFeatures() const override;

    inline bool isValid() { return positionInfoSource(); }

private Q_SLOTS:

    void positionError(QGeoPositionInfoSource::Error error);

    void timeout(const QGeoAreaMonitorInfo &monitor);

    void processAreaEvent(const QGeoAreaMonitorInfo &minfo, const QGeoPositionInfo &pinfo, bool isEnteredEvent);

private:

    QGeoAreaMonitorPollingPrivate* d;

    QGeoAreaMonitorSource::Error lastError = QGeoAreaMonitorSource::NoError;

    friend class QGeoAreaMonitorPollingPrivate;

    int signalConnections = 0;

    // connectNotify() and disconnectNotify() can be called from a different

    // thread, so we need to synchronize the access to signalConnections

    QMutex connectionMutex;

    void connectNotify(const QMetaMethod &signal) override;

    void disconnectNotify(const QMetaMethod &signal) override;

    int idForSignal(const char *signal);

    bool hasConnections() const;

};

QT_END_NAMESPACE

#endif // QGEOAREAMONITORPOLLING_H