| 0,0 → 1,73 |
|---|
| /* |
| * |
| * This file is part of QMapControl, |
| * an open-source cross-platform map widget |
| * |
| * Copyright (C) 2007 - 2008 Kai Winter |
| * |
| * This program is free software: you can redistribute it and/or modify |
| * it under the terms of the GNU Lesser 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 Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public License |
| * along with QMapControl. If not, see <http://www.gnu.org/licenses/>. |
| * |
| * Contact e-mail: kaiwinter@gmx.de |
| * Program URL : http://qmapcontrol.sourceforge.net/ |
| * |
| */ |
| |
| #ifndef EMPTYMAPADAPTER_H |
| #define EMPTYMAPADAPTER_H |
| |
| #include "mapadapter.h" |
| |
| namespace qmapcontrol |
| { |
| //! MapAdapter which do not load map tiles. |
| /*! |
| * The EmptyMapAdapter can be used if QMapControl should not load any map tiles. This is useful if you |
| * only want to display an image through a FixedImageOverlay e.g. |
| * @author Kai Winter <kaiwinter@gmx.de> |
| */ |
| class EmptyMapAdapter : public MapAdapter |
| { |
| Q_OBJECT |
| public: |
| //! Constructor. |
| /*! |
| * @param tileSize This parameter seems unnecessary for this type of MapAdaper on first sight. But since |
| * this parameter defines the size of the offscreen image it could be used for a little performance |
| * tuning (larger offscreen-images have to be redrawed less times). |
| * @param minZoom the minimum zoom level |
| * @param maxZoom the maximum zoom level |
| */ |
| EmptyMapAdapter(int tileSize = 256, int minZoom = 0, int maxZoom = 17); |
| |
| virtual ~EmptyMapAdapter(); |
| |
| virtual QPoint coordinateToDisplay(const QPointF&) const; |
| virtual QPointF displayToCoordinate(const QPoint&) const; |
| |
| qreal PI; |
| |
| protected: |
| qreal rad_deg(qreal) const; |
| qreal deg_rad(qreal) const; |
| |
| virtual bool isValid(int x, int y, int z) const; |
| virtual void zoom_in(); |
| virtual void zoom_out(); |
| virtual QString query(int x, int y, int z) const; |
| virtual int tilesonzoomlevel(int zoomlevel) const; |
| virtual int xoffset(int x) const; |
| virtual int yoffset(int y) const; |
| }; |
| } |
| #endif |