Sensors.h

/***************************************************************************
 *   Copyright (C) 2023 by Stefan Kebekus                                  *
 *   stefan.kebekus@gmail.com                                              *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 3 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/
 
#pragma once
 
#include <QQmlEngine>
 
#include "GlobalObject.h"
#include "navigation/Atmosphere.h"
#include "units/Pressure.h"
#include "units/Temperature.h"
 
#if defined(Q_OS_ANDROID) or defined(Q_OS_IOS)
#include <QAmbientTemperatureSensor>
#include <QPressureSensor>
#endif
 

 
class Sensors : public GlobalObject
{
    Q_OBJECT
    QML_ELEMENT
    QML_SINGLETON
 
public:
    //
    // Constructors and destructors
    //

    explicit Sensors(QObject* parent = nullptr);
 
    // deferred initialization
    void deferredInitialization() override;
 
    // No default constructor, important for QML singleton
    explicit Sensors() = delete;

    ~Sensors() override = default;
 
    // factory function for QML singleton
    static Sensors* create(QQmlEngine* /*unused*/, QJSEngine* /*unused*/)
    {
        return GlobalObject::sensors();
    }
 
 
    //
    // PROPERTIES
    //

    Q_PROPERTY(Units::Pressure ambientPressure READ ambientPressure NOTIFY ambientPressureChanged)
 
    
    Q_PROPERTY(Units::Temperature ambientTemperature READ ambientTemperature NOTIFY ambientTemperatureChanged)

    Q_PROPERTY(Units::Distance pressureAltitude READ pressureAltitude NOTIFY ambientPressureChanged)

    Q_PROPERTY(QString statusString READ statusString NOTIFY statusStringChanged)
 
 
    //
    // Getter Methods
    //

    [[nodiscard]] Units::Pressure ambientPressure() const { return m_ambientPressure; }

    [[nodiscard]] Units::Temperature ambientTemperature() const { return m_ambientTemperature; }

    [[nodiscard]] Units::Distance pressureAltitude() const { return Navigation::Atmosphere::height(m_ambientPressure); }

    [[nodiscard]] QString statusString() const { return m_statusString; }
 
signals:
    void ambientDensityChanged();

    void ambientPressureChanged();

    void ambientTemperatureChanged();

    void statusStringChanged();
 
private slots:
    // Update sensor readings. For performance reasons, we poll sensors.
    void updateSensorReadings();
 
    // Update the status string
    void updateStatusString();
 
private:
    Q_DISABLE_COPY_MOVE(Sensors)
 
#if defined(Q_OS_ANDROID) or defined(Q_OS_IOS)
    // Ambient temperature sensor
    QAmbientTemperatureSensor m_temperatureSensor;
 
    // Ambient pressure sensor
    QPressureSensor m_pressureSensor;
#endif
 
    Units::Pressure m_ambientPressure;
    Units::Temperature m_ambientTemperature;
    QString m_statusString;
};