TerrainQueryInterface.h

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#pragma once
 
#include <QtCore/QList>
#include <QtCore/QObject>
#include <QtNetwork/QNetworkReply>
 
class QGeoCoordinate;
class QNetworkAccessManager;
 
namespace TerrainQuery
{
    enum QueryMode {
        QueryModeNone,
        QueryModeCoordinates,
        QueryModePath,
        QueryModeCarpet
    };
 
    enum class State {
        Idle,
        Downloading,
    };
}
 
class TerrainQueryInterface : public QObject
{
    Q_OBJECT
 
public:
    explicit TerrainQueryInterface(QObject *parent = nullptr);
    virtual ~TerrainQueryInterface();
 
    virtual void requestCoordinateHeights(const QList<QGeoCoordinate> &coordinates);
 
    virtual void requestPathHeights(const QGeoCoordinate &fromCoord, const QGeoCoordinate &toCoord);
 
    virtual void requestCarpetHeights(const QGeoCoordinate &swCoord, const QGeoCoordinate &neCoord, bool statsOnly);
 
    void signalCoordinateHeights(bool success, const QList<double> &heights);
    void signalPathHeights(bool success, double distanceBetween, double finalDistanceBetween, const QList<double> &heights);
    void signalCarpetHeights(bool success, double minHeight, double maxHeight, const QList<QList<double>> &carpet);
 
signals:
    void coordinateHeightsReceived(bool success, const QList<double> &heights);
    void pathHeightsReceived(bool success, double distanceBetween, double finalDistanceBetween, const QList<double> &heights);
    void carpetHeightsReceived(bool success, double minHeight, double maxHeight, const QList<QList<double>> &carpet);
 
protected:
    virtual void _requestFailed();
 
    TerrainQuery::QueryMode _queryMode = TerrainQuery::QueryMode::QueryModeNone;
};
 
/*===========================================================================*/
 
class TerrainOfflineQuery : public TerrainQueryInterface
{
    Q_OBJECT
 
public:
    explicit TerrainOfflineQuery(QObject *parent = nullptr);
    ~TerrainOfflineQuery();
 
    void requestCoordinateHeights(const QList<QGeoCoordinate> &coordinates) override;
    void requestPathHeights(const QGeoCoordinate &fromCoord, const QGeoCoordinate &toCoord) override;
    void requestCarpetHeights(const QGeoCoordinate &swCoord, const QGeoCoordinate &neCoord, bool statsOnly) override;
};
 
/*===========================================================================*/
 
class TerrainOnlineQuery : public TerrainQueryInterface
{
    Q_OBJECT
 
public:
    explicit TerrainOnlineQuery(QObject *parent = nullptr);
    virtual ~TerrainOnlineQuery();
 
protected slots:
    virtual void _requestFinished();
    virtual void _requestError(QNetworkReply::NetworkError code);
    virtual void _sslErrors(const QList<QSslError> &errors);
 
protected:
    QNetworkAccessManager *_networkManager = nullptr;
};