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/*
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*
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* This file is part of QMapControl,
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* an open-source cross-platform map widget
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*
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* Copyright (C) 2007 - 2008 Kai Winter
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with QMapControl. If not, see <http://www.gnu.org/licenses/>.
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*
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* Contact e-mail: kaiwinter@gmx.de
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* Program URL   : http://qmapcontrol.sourceforge.net/
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*
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*/
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#ifndef TILEMAPADAPTER_H
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#define TILEMAPADAPTER_H
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#include "mapadapter.h"
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namespace qmapcontrol
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{
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    //! MapAdapter for servers with image tiles
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    /*!
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     * Use this derived MapAdapter to display maps from OpenStreetMap
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     *  @author Kai Winter <kaiwinter@gmx.de>
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     */
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    class TileMapAdapter : public MapAdapter
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    {
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        Q_OBJECT
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                public:
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        //! constructor
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        /*!
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         * Sample of a correct initialization of a MapAdapter:<br/>
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         * TileMapAdapter* ta = new TileMapAdapter("192.168.8.1", "/img/img_cache.php/%1/%2/%3.png", 256, 0,17);<br/>
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         * The placeholders %1, %2, %3 stands for x, y, z<br/>
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         * The minZoom is 0 (means the whole world is visible). The maxZoom is 17 (means it is zoomed in to the max)
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         * @param host The servers URL
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         * @param serverPath The path to the tiles with placeholders
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         * @param tilesize the size of the tiles
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         * @param minZoom the minimum zoom level
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         * @param maxZoom the maximum zoom level
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         */
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        TileMapAdapter(const QString& host, const QString& serverPath, int tilesize, int minZoom = 0, int maxZoom = 17);
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        virtual ~TileMapAdapter();
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        virtual QPoint coordinateToDisplay(const QPointF&) const;
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        virtual QPointF displayToCoordinate(const QPoint&) const;
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        qreal PI;
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    protected:
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        qreal rad_deg(qreal) const;
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        qreal deg_rad(qreal) const;
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        virtual bool isValid(int x, int y, int z) const;
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        virtual void zoom_in();
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        virtual void zoom_out();
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        virtual QString query(int x, int y, int z) const;
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        virtual int tilesonzoomlevel(int zoomlevel) const;
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        virtual int xoffset(int x) const;
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        virtual int yoffset(int y) const;
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    };
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}
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#endif