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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 GEOMETRY_H
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#define GEOMETRY_H
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#include <QObject>
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#include <QPainter>
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#include <QDebug>
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#include "mapadapter.h"
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namespace qmapcontrol
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{
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    class Point;
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    //! Main class for objects that should be painted in maps
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    /*!
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     * Geometry is the root class of the hierarchy. Geometry is an abstract (non-instantiable) class.
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     *
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     * This class and the derived classes Point, Curve and LineString are leant on the Simple
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     * Feature Specification of the Open Geospatial Consortium.
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     * @see www.opengeospatial.com
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     *
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     *  @author Kai Winter <kaiwinter@gmx.de>
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     */
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    class Geometry : public QObject
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    {
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        friend class LineString;
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        Q_OBJECT
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    public:
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        explicit Geometry(QString name = QString());
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        virtual ~Geometry();
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        QString GeometryType;
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        //!
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        /*! returns true if the given Geometry is equal to this Geometry
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         *  not implemented yet!
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         * @param geom The Geometry to be tested
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         * @return true if the given Geometry is equal to this
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         */
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        bool Equals(Geometry* geom);
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        //! returns a String representation of this Geometry
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        /*!
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         * not implemented yet!
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         * @return a String representation of this Geometry
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         */
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        QString toString();
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        //! returns the name of this Geometry
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        /*!
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         * @return the name of this Geometry
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         */
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        QString name() const;
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        //! returns the parent Geometry of this Geometry
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        /*!
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         * A LineString is a composition of many Points. This methods returns the parent (the LineString) of a Point
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         * @return the parent Geometry of this Geometry
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         */
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        Geometry* parentGeometry() const;
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        //! returns true if this Geometry is visible
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        /*!
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         * @return true if this Geometry is visible
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         */
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        bool isVisible() const;
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        //! sets the name of the geometry
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        /*!
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         * @param name the new name of the geometry
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         */
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        void setName(QString name);
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        //! returns the QPen which is used on drawing
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        /*!
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         * The pen is set depending on the Geometry. A CirclePoint for example takes one with the constructor.
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         * @return the QPen which is used for drawing
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         */
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        QPen* pen() const;
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        //! returns the BoundingBox
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        /*!
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         * The bounding box in world coordinates
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         * @return the BoundingBox
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         */
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        virtual QRectF boundingBox()=0;
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        virtual bool Touches(Point* geom, const MapAdapter* mapadapter)=0;
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        virtual void draw(QPainter* painter, const MapAdapter* mapadapter, const QRect &viewport, const QPoint offset)=0;
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        virtual bool hasPoints() const;
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        virtual bool hasClickedPoints() const;
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        virtual void setPen(QPen* pen);
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        virtual QList<Geometry*> clickedPoints();
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        virtual QList<Point*> points()=0;
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    private:
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        Geometry* myparentGeometry;
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        Geometry(const Geometry& old);
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        Geometry& operator=(const Geometry& rhs);
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    protected:
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        QPen* mypen;
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        bool visible;
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        QString myname;
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        void setParentGeometry(Geometry* geom);
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    signals:
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        void updateRequest(Geometry* geom);
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        void updateRequest(QRectF rect);
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        //! This signal is emitted when a Geometry is clicked
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        /*!
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         * A Geometry is clickable, if the containing layer is clickable.
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         * The objects emits a signal if it gets clicked
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         * @param  geometry The clicked Geometry
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         * @param  point -unused-
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         */
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        void geometryClicked(Geometry* geometry, QPoint point);
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        //! A Geometry emits this signal, when its position gets changed
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        /*!
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         * @param geom the Geometry
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         */
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        void positionChanged(Geometry* geom);
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    public slots:
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        //! if visible is true, the layer is made visible
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        /*!
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         * @param  visible if the layer should be visible
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         */
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        virtual void setVisible(bool visible);
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    };
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}
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#endif