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| 305 | KeyOz | 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 LINESTRING_H |
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| 27 | #define LINESTRING_H |
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| 28 | |||
| 29 | #include "curve.h" |
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| 30 | |||
| 31 | namespace qmapcontrol |
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| 32 | { |
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| 33 | //! A collection of Point objects to describe a line |
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| 34 | /*! |
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| 35 | * A LineString is a Curve with linear interpolation between Points. Each consecutive pair of Points defines a Line segment. |
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| 36 | * @author Kai Winter <kaiwinter@gmx.de> |
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| 37 | */ |
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| 38 | class LineString : public Curve |
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| 39 | { |
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| 40 | Q_OBJECT |
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| 41 | |||
| 42 | public: |
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| 43 | LineString(); |
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| 44 | //! constructor |
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| 45 | /*! |
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| 46 | * The constructor of a LineString takes a list of Points to form a line. |
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| 47 | * @param points a list of points |
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| 48 | * @param name the name of the LineString |
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| 49 | * @param pen a QPen can be used to modify the look of the line. |
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| 50 | * @see http://doc.trolltech.com/4.3/qpen.html |
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| 51 | */ |
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| 52 | LineString ( QList<Point*> const points, QString name = QString(), QPen* pen = 0 ); |
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| 53 | virtual ~LineString(); |
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| 54 | |||
| 55 | //! returns the points of the LineString |
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| 56 | /*! |
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| 57 | * @return a list with the points of the LineString |
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| 58 | */ |
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| 59 | QList<Point*> points(); |
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| 60 | |||
| 61 | //! adds a point at the end of the LineString |
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| 62 | /*! |
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| 63 | * @param point the point which should be added to the LineString |
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| 64 | */ |
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| 65 | void addPoint ( Point* point ); |
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| 66 | |||
| 67 | //! sets the given list as points of the LineString |
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| 68 | /*! |
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| 69 | * @param points the points which should be set for the LineString |
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| 70 | */ |
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| 71 | void setPoints ( QList<Point*> points ); |
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| 72 | |||
| 73 | //! returns the number of Points the LineString consists of |
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| 74 | /*! |
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| 75 | * @return the number of the LineString´s Points |
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| 76 | */ |
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| 77 | int numberOfPoints() const; |
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| 78 | |||
| 79 | // virtual Geometry Clone(); |
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| 80 | virtual QRectF boundingBox(); |
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| 81 | // virtual Point EndPoint(); |
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| 82 | // virtual Point StartPoint(); |
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| 83 | // virtual Point Value(); |
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| 84 | |||
| 85 | //! returns true if the LineString has Childs |
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| 86 | /*! |
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| 87 | * This is equal to: numberOfPoints() > 0 |
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| 88 | * @return true it the LineString has Childs (=Points) |
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| 89 | * @see clickedPoints() |
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| 90 | */ |
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| 91 | virtual bool hasPoints() const; |
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| 92 | |||
| 93 | //! returns true if the LineString has clicked Points |
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| 94 | /*! |
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| 95 | * @return true if childs of a LineString were clicked |
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| 96 | * @see clickedPoints() |
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| 97 | */ |
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| 98 | virtual bool hasClickedPoints() const; |
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| 99 | |||
| 100 | //! returns the clicked Points |
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| 101 | /*! |
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| 102 | * If a LineString was clicked it could be neccessary to figure out which of its points where clicked. |
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| 103 | * Do do so the methods hasPoints() and clickedPoints() can be used. |
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| 104 | * When a point is added to a LineString the Point becomes its child. |
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| 105 | * It is possible (depending on the zoomfactor) to click more than one Point of a LineString, so this method returns a list. |
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| 106 | * @return the clicked Points of the LineString |
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| 107 | */ |
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| 108 | virtual QList<Geometry*> clickedPoints(); |
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| 109 | |||
| 110 | protected: |
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| 111 | virtual bool Touches ( Geometry* geom, const MapAdapter* mapadapter ); |
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| 112 | virtual bool Touches ( Point* geom, const MapAdapter* mapadapter ); |
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| 113 | virtual void draw ( QPainter* painter, const MapAdapter* mapadapter, const QRect &screensize, const QPoint offset ); |
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| 114 | |||
| 115 | private: |
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| 116 | QList<Point*> vertices; |
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| 117 | QList<Geometry*> touchedPoints; |
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| 118 | }; |
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| 119 | } |
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| 120 | #endif |