src/map/gemfmap.h

   1 #ifndef GEMFMAP_H
   2 #define GEMFMAP_H
   3
   4 #include <QFile>
   5 #include <QDebug>
   6 #include "map.h"
   7
   8 class GEMFMap : public Map
   9 {
  10 public:
  11         Q_OBJECT
  12
  13 public:
  14         GEMFMap(const QString &fileName, QObject *parent = 0);
  15
  16         QRectF bounds();
  17         RectC llBounds(const Projection &) {return _bounds;}
  18
  19         int zoom() const {return _zi;}
  20         void setZoom(int zoom) {_zi = zoom;}
  21         int zoomFit(const QSize &size, const RectC &rect);
  22         int zoomIn();
  23         int zoomOut();
  24         qreal resolution(const QRectF &rect);
  25
  26         QPointF ll2xy(const Coordinates &c);
  27         Coordinates xy2ll(const QPointF &p);
  28
  29         void load(const Projection &in, const Projection &out, qreal deviceRatio,
  30           bool hidpi);
  31         void unload();
  32
  33         void draw(QPainter *painter, const QRectF &rect, Flags flags);
  34
  35         bool isValid() const {return _valid;}
  36         QString errorString() const {return _errorString;}
  37
  38         static Map *create(const QString &path, bool *isDir);
  39
  40 private:
  41         struct Region {
  42                 quint32 minX;
  43                 quint32 maxX;
  44                 quint32 minY;
  45                 quint32 maxY;
  46                 quint64 offset;
  47         };
  48
  49         struct Zoom {
  50                 int level;
  51                 QList<Region> ranges;
  52
  53                 Zoom(int level) : level(level) {}
  54
  55                 bool operator==(const Zoom &other) const
  56                   {return level == other.level;}
  57                 bool operator<(const Zoom &other) const
  58                   {return level < other.level;}
  59         };
  60
  61         QRect rect(const Zoom &zoom) const;
  62         bool readHeader(QDataStream &stream);
  63         bool readRegions(QDataStream &stream);
  64         bool computeBounds();
  65         qreal tileSize() const;
  66         QByteArray tileData(const QPoint &tile);
  67         void drawTile(QPainter *painter, QPixmap &pixmap, QPointF &tp);
  68
  69         friend QDebug operator<<(QDebug dbg, const Region &region);
  70         friend QDebug operator<<(QDebug dbg, const Zoom &zoom);
  71
  72         QFile _file;
  73         int _zi;
  74         RectC _bounds;
  75         qreal _mapRatio;
  76         int _tileSize;
  77         QList<Zoom> _zooms;
  78
  79         bool _valid;
  80         QString _errorString;
  81 };
  82
  83 #ifndef QT_NO_DEBUG
  84 QDebug operator<<(QDebug dbg, const GEMFMap::Region &region);
  85 QDebug operator<<(QDebug dbg, const GEMFMap::Zoom &zoom);
  86 #endif // QT_NO_DEBUG
  87
  88 #endif // GEMFMAP_H