2 Situare - A location system for Facebook
3 Copyright (C) 2010 Ixonos Plc. Authors:
5 Sami Rämö - sami.ramo@ixonos.com
6 Jussi Laitinen - jussi.laitinen@ixonos.com
8 Situare is free software; you can redistribute it and/or
9 modify it under the terms of the GNU General Public License
10 version 2 as published by the Free Software Foundation.
12 Situare is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with Situare; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
36 /// Logic for controlling map functionality. Does also include static methods for
37 /// converting coordinates.
38 /// \author Sami Rämö - sami.ramo (at) ixonos.com
39 class MapEngine : public QObject
43 /// \brief Constructor
45 /// \param mapView View for map
46 /// \param parent Parent
47 /// Does create and add scene to map view.
48 MapEngine(MapView *mapView, QWidget *parent = 0);
50 /// \brief Convert tile x & y numbers to MapScene coordinates
52 /// \param zoomLevel Zoom level
53 /// \param tileNumber x & y number of the tile
54 /// \return MapScene coordinate
55 static QPoint convertTileNumberToSceneCoordinate(int zoomLevel, QPoint tileNumber)
57 int x = tileNumber.x() * TILE_SIZE_X * pow(2, MAX_ZOOM_LEVEL - zoomLevel);
58 int y = tileNumber.y() * TILE_SIZE_Y * pow(2, MAX_ZOOM_LEVEL - zoomLevel);
63 /// \brief Set view location
65 /// \param latLonCoordinate Latitude & longitude coordinates for location
66 void setViewLocation(QPointF latLonCoordinate);
68 QPoint latLonToTile(qreal latitude, qreal longitude, int zoom);
71 * @brief Transforms tile x value to longitude.
73 * @fn tileXToLongitude
74 * @param x tile x value
75 * @param zoom zoom value
76 * @return qreal longitude
78 qreal tileXToLongitude(int x, int zoom);
81 * @brief Transforms tile y value to latitude.
84 * @param y tile y value
85 * @param zoom zoom value
86 * @return qreal latitude
88 qreal tileYToLatitude(int y, int zoom);
91 void mapImageReceived(const QUrl *url, const QPixmap *pixmap);
94 static const int TILE_SIZE_X = 256; ///< Tile image size in x direction
95 static const int TILE_SIZE_Y = 256; ///< Tile image size in y direction
96 static const int MIN_ZOOM_LEVEL = 0; ///< Minimum zoom level
97 static const int MAX_ZOOM_LEVEL = 18; ///< Maximum zoom level
100 MapView *m_mapView; ///< View for viewing map
101 MapScene *m_mapScene; ///< Scene for map tiles
102 MapFetcher *m_mapFetcher; ///< Fetcher for map tiles
103 int m_zoomLevel; ///< Current zoom level
106 #endif // MAPENGINE_H