Viewer3DTileReply.h

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#pragma once
 
#include <QtCore/QByteArray>
#include <QtCore/QLoggingCategory>
#include <QtCore/QObject>
#include <QtCore/QString>
 
Q_DECLARE_LOGGING_CATEGORY(Viewer3DTileReplyLog)
 
struct QGCCacheTile;
class QNetworkAccessManager;
class QNetworkReply;
class QTimer;
 
class Viewer3DTileReply : public QObject
{
    Q_OBJECT
 
public:
    struct TileInfo_t {
        QByteArray data;
        int x = 0;
        int y = 0;
        int zoomLevel = 0;
        int mapId = 0;
    };
 
    explicit Viewer3DTileReply(int zoomLevel, int tileX, int tileY, int mapId, const QString &mapType, QNetworkAccessManager *networkManager, QObject *parent = nullptr);
    ~Viewer3DTileReply();
 
signals:
    void tileDone(TileInfo_t);
    void tileEmpty(TileInfo_t);
    void tileGiveUp(TileInfo_t);
 
private:
    void _prepareDownload();
    void _onRequestFinished();
    void _onRequestError();
    void _onTimeout();
    void _onCacheHit(QGCCacheTile *tile);
    void _onCacheMiss();
    void _disconnectReply();
    bool _isBingEmptyTile() const;
 
    static constexpr int kTimeoutMs   = 10000;
    static constexpr int kMaxRetries  = 5;
 
    QNetworkAccessManager *_networkManager = nullptr;
    QNetworkReply *_reply = nullptr;
    QTimer *_timeoutTimer = nullptr;
 
    TileInfo_t _tile;
    int _timeoutCounter = 0;
 
    static QByteArray _bingNoTileImage;
};