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| Rev | Author | Line No. | Line |
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| 801 | - | 1 | /* |
| 2 | * |
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| 3 | * This file is part of QMapControl, |
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| 4 | * an open-source cross-platform map widget |
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| 5 | * |
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| 6 | * Copyright (C) 2007 - 2008 Kai Winter |
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| 7 | * |
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| 8 | * This program is free software: you can redistribute it and/or modify |
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| 9 | * it under the terms of the GNU Lesser General Public License as published by |
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| 10 | * the Free Software Foundation, either version 3 of the License, or |
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| 11 | * (at your option) any later version. |
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| 12 | * |
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| 13 | * This program is distributed in the hope that it will be useful, |
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| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 16 | * GNU Lesser General Public License for more details. |
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| 17 | * |
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| 18 | * You should have received a copy of the GNU Lesser General Public License |
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| 19 | * along with QMapControl. If not, see <http://www.gnu.org/licenses/>. |
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| 20 | * |
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| 21 | * Contact e-mail: kaiwinter@gmx.de |
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| 22 | * Program URL : http://qmapcontrol.sourceforge.net/ |
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| 23 | * |
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| 24 | */ |
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| 25 | |||
| 26 | #ifndef EMPTYMAPADAPTER_H |
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| 27 | #define EMPTYMAPADAPTER_H |
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| 28 | |||
| 29 | #include "mapadapter.h" |
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| 30 | |||
| 31 | namespace qmapcontrol |
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| 32 | { |
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| 33 | //! MapAdapter which do not load map tiles. |
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| 34 | /*! |
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| 35 | * The EmptyMapAdapter can be used if QMapControl should not load any map tiles. This is useful if you |
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| 36 | * only want to display an image through a FixedImageOverlay e.g. |
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| 37 | * @author Kai Winter <kaiwinter@gmx.de> |
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| 38 | */ |
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| 39 | class EmptyMapAdapter : public MapAdapter |
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| 40 | { |
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| 41 | Q_OBJECT |
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| 42 | public: |
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| 43 | //! Constructor. |
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| 44 | /*! |
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| 45 | * @param tileSize This parameter seems unnecessary for this type of MapAdaper on first sight. But since |
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| 46 | * this parameter defines the size of the offscreen image it could be used for a little performance |
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| 47 | * tuning (larger offscreen-images have to be redrawed less times). |
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| 48 | * @param minZoom the minimum zoom level |
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| 49 | * @param maxZoom the maximum zoom level |
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| 50 | */ |
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| 51 | EmptyMapAdapter(int tileSize = 256, int minZoom = 0, int maxZoom = 17); |
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| 52 | |||
| 53 | virtual ~EmptyMapAdapter(); |
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| 54 | |||
| 55 | virtual QPoint coordinateToDisplay(const QPointF&) const; |
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| 56 | virtual QPointF displayToCoordinate(const QPoint&) const; |
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| 57 | |||
| 58 | qreal PI; |
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| 59 | |||
| 60 | protected: |
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| 61 | qreal rad_deg(qreal) const; |
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| 62 | qreal deg_rad(qreal) const; |
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| 63 | |||
| 64 | virtual bool isValid(int x, int y, int z) const; |
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| 65 | virtual void zoom_in(); |
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| 66 | virtual void zoom_out(); |
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| 67 | virtual QString query(int x, int y, int z) const; |
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| 68 | virtual int tilesonzoomlevel(int zoomlevel) const; |
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| 69 | virtual int xoffset(int x) const; |
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| 70 | virtual int yoffset(int y) const; |
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| 71 | }; |
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| 72 | } |
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| 73 | #endif |