[6] | 1 | // -*- C++ -*- // |
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| 2 | |
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| 3 | #ifndef GRAPH_DISPLAYER_CANVAS_H |
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| 4 | #define GRAPH_DISPLAYER_CANVAS_H |
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| 5 | |
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[21] | 6 | class GraphDisplayerCanvas; |
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| 7 | |
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[53] | 8 | #include "all_include.h" |
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[96] | 9 | #include "nbtab.h" |
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[6] | 10 | #include <libgnomecanvasmm.h> |
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| 11 | #include <libgnomecanvasmm/polygon.h> |
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[150] | 12 | #include <lemon/dim2.h> |
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[6] | 13 | |
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| 14 | ///This class is the canvas, on which the graph can be drawn. |
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| 15 | class GraphDisplayerCanvas : public Gnome::Canvas::CanvasAA |
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| 16 | { |
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[98] | 17 | friend class BrokenEdge; |
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[147] | 18 | friend class LoopEdge; |
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| 19 | |
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| 20 | class EdgeBase : public Gnome::Canvas::Group |
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| 21 | { |
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| 22 | protected: |
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| 23 | ///Reference to the canvas, on which the graph is drawn. |
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| 24 | |
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| 25 | ///It is needed, because some datas needed from |
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| 26 | ///graph can be accessed by this or should be sent |
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| 27 | ///as parameter, but it would be complicated |
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| 28 | GraphDisplayerCanvas& canvas; |
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| 29 | |
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| 30 | ///The edge that the class displays. |
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| 31 | |
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| 32 | ///It is needed, because some datas needed from |
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| 33 | ///graph can be accessed by this or should be sent |
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| 34 | ///as parameter, but it would be complicated |
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| 35 | Edge edge; |
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| 36 | |
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| 37 | Gnome::Canvas::Polygon arrow; |
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| 38 | |
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| 39 | void drawArrow(XY); |
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| 40 | public: |
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| 41 | EdgeBase(Gnome::Canvas::Group&, Edge, GraphDisplayerCanvas&); |
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| 42 | virtual ~EdgeBase(); |
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| 43 | virtual void draw() = 0; |
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| 44 | virtual void setLineWidth(int) = 0; |
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| 45 | virtual void setFillColor(Gdk::Color) = 0; |
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[149] | 46 | virtual Gnome::Canvas::Item * getLine() = 0; |
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[147] | 47 | }; |
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[98] | 48 | |
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[118] | 49 | ///Edge displayer class |
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| 50 | |
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| 51 | ///This class is responsible for displaying edges in graph. |
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| 52 | ///The displayed edge is broken in the middle. The |
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| 53 | ///aim of this is to be able to indicate direction of edges |
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| 54 | ///and to be able to display more then one edges between the |
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| 55 | ///same source and target |
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[147] | 56 | class BrokenEdge : public EdgeBase |
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[89] | 57 | { |
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[147] | 58 | private: |
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| 59 | Gnome::Canvas::Line line; |
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[118] | 60 | |
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[147] | 61 | ///Indicates whether the button of mouse is pressed or not at the moment. |
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| 62 | bool isbutton; |
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[118] | 63 | |
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[147] | 64 | ///At this location was the mousebutton pressed. Horizontal component. |
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[118] | 65 | |
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[147] | 66 | ///It helps to calculate the |
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| 67 | ///distance of dragging. |
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| 68 | double clicked_x; |
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[118] | 69 | |
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[147] | 70 | ///At this location was the mousebutton pressed. Vertical component. |
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[118] | 71 | |
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[147] | 72 | ///It helps to calculate the |
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| 73 | ///distance of dragging. |
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| 74 | double clicked_y; |
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[89] | 75 | |
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[147] | 76 | ///event handler for forming broken edges |
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[89] | 77 | |
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[147] | 78 | ///\param event the |
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| 79 | ///event to handle |
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| 80 | bool edgeFormerEventHandler(GdkEvent* event); |
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[89] | 81 | |
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[147] | 82 | public: |
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| 83 | ///Constructor of broken edge class. |
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[118] | 84 | |
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[147] | 85 | ///\param g the group to which the edge belongs |
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| 86 | ///\param _edge the represented edge |
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| 87 | ///\param gc the canvas |
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| 88 | BrokenEdge(Gnome::Canvas::Group&, Edge, GraphDisplayerCanvas&); |
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[118] | 89 | |
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[147] | 90 | ///Destructor of broken edge class |
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[118] | 91 | |
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[147] | 92 | ///Frees up |
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| 93 | ///reserved memory |
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| 94 | ~BrokenEdge(); |
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[118] | 95 | |
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[147] | 96 | ///The function that draws the edge based on collected data |
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| 97 | void draw(); |
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[118] | 98 | |
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[147] | 99 | void setLineWidth(int); |
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| 100 | void setFillColor(Gdk::Color); |
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[149] | 101 | |
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| 102 | Gnome::Canvas::Item * getLine() { return (Gnome::Canvas::Item *)(&line); }; |
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[147] | 103 | }; |
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[118] | 104 | |
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[147] | 105 | class LoopEdge : public EdgeBase |
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| 106 | { |
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| 107 | private: |
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| 108 | Gnome::Canvas::Ellipse line; |
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[151] | 109 | bool edgeFormerEventHandler(GdkEvent* e); |
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| 110 | bool isbutton; |
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[147] | 111 | public: |
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| 112 | LoopEdge(Gnome::Canvas::Group&, Edge, GraphDisplayerCanvas&); |
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| 113 | ~LoopEdge(); |
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| 114 | void draw(); |
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| 115 | void setLineWidth(int); |
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| 116 | void setFillColor(Gdk::Color); |
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[149] | 117 | Gnome::Canvas::Item * getLine() { return (Gnome::Canvas::Item *)(&line); }; |
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[89] | 118 | }; |
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[118] | 119 | |
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| 120 | ///Type of canvas, on which the graph is drawn |
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[6] | 121 | typedef Gnome::Canvas::CanvasAA Parent; |
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| 122 | |
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| 123 | public: |
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[118] | 124 | ///Constructor |
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| 125 | |
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| 126 | ///\param nbt the tab of the window, in which the graph is displayed |
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| 127 | GraphDisplayerCanvas(NoteBookTab & nbt); |
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| 128 | |
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| 129 | ///destructor of the class |
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[6] | 130 | virtual ~GraphDisplayerCanvas(); |
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| 131 | |
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[118] | 132 | ///Changes the width of edge(s) according to the given map. |
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| 133 | |
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| 134 | ///\param mapname is the name of the map which contains the values to be set |
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| 135 | ///\param edge if it is given, only the width of the given edge will be set, instead of all of them. |
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| 136 | int changeEdgeWidth (std::string mapname, Edge edge=INVALID); |
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| 137 | |
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| 138 | ///Resets width of edge(s) to the default value |
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| 139 | |
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| 140 | ///\param edge if it is given, only the width of the |
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| 141 | ///given edge will be reset, instead of all of them. |
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| 142 | int resetEdgeWidth (Edge edge=INVALID); |
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| 143 | |
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| 144 | ///Changes the color of edge(s) according to the given map. |
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| 145 | |
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[6] | 146 | ///\param mapname is the name of the map which contains the new values |
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[118] | 147 | ///\param edge if it is given, only the color of the given edge will be set, instead of all of them. |
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| 148 | int changeEdgeColor (std::string mapname, Edge edge=INVALID); |
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[6] | 149 | |
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[118] | 150 | ///Resets color of edge(s) to the default value |
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| 151 | |
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| 152 | ///\param edge if it is given, only the color of the |
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| 153 | ///given edge will be reset, instead of all of them. |
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| 154 | int resetEdgeColor (Edge edge=INVALID); |
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| 155 | |
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| 156 | ///Changes the label of edge(s) according to the given map. |
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| 157 | |
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[6] | 158 | ///\param mapname is the name of the map which contains the new values |
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[118] | 159 | ///\param edge if it is given, only the label of the given edge will be set, instead of all of them. |
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| 160 | int changeEdgeText (std::string mapname, Edge edge=INVALID); |
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[6] | 161 | |
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[118] | 162 | ///Resets label of edge(s) to the default value |
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| 163 | |
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| 164 | ///\param edge if it is given, only the color of the |
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| 165 | ///given edge will be reset, instead of all of them. |
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| 166 | int resetEdgeText (Edge edge=INVALID); |
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| 167 | |
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| 168 | ///Changes the radius of node(s) according to the given map. |
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| 169 | |
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[6] | 170 | ///\param mapname is the name of the map which contains the new values |
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[118] | 171 | ///\param node if it is given, only the radius of the given node will be set, instead of all of them. |
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| 172 | int changeNodeRadius (std::string mapname, Node node=INVALID); |
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[28] | 173 | |
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[118] | 174 | ///Resets radius of node(s) to the default value |
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| 175 | |
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| 176 | ///\param node if it is given, only the radius of the |
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| 177 | ///given node will be reset, instead of all of them. |
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| 178 | int resetNodeRadius (Node node=INVALID); |
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| 179 | |
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| 180 | ///Changes the color of node(s) according to the given map. |
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| 181 | |
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[28] | 182 | ///\param mapname is the name of the map which contains the new values |
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[118] | 183 | ///\param node if it is given, only the color of the given node will be set, instead of all of them. |
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| 184 | int changeNodeColor (std::string mapname, Node node=INVALID); |
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[28] | 185 | |
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[118] | 186 | ///Resets color of node(s) to the default value |
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| 187 | |
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| 188 | ///\param node if it is given, only the color of the |
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| 189 | ///given node will be reset, instead of all of them. |
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| 190 | int resetNodeColor (Node node=INVALID); |
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| 191 | |
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| 192 | ///Changes the label of node(s) according to the given map. |
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| 193 | |
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[28] | 194 | ///\param mapname is the name of the map which contains the new values |
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[118] | 195 | ///\param node if it is given, only the label of the given node will be set, instead of all of them. |
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| 196 | int changeNodeText (std::string mapname, Node node=INVALID); |
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[28] | 197 | |
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[118] | 198 | ///Resets label of node(s) to the default value |
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[6] | 199 | |
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[118] | 200 | ///\param node if it is given, only the label of the |
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| 201 | ///given node will be reset, instead of all of them. |
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| 202 | int resetNodeText (Node node=INVALID); |
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[94] | 203 | |
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[118] | 204 | ///This function is called, when any of the displayed attributes have to be updated, or changed |
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| 205 | |
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| 206 | ///\param itisedge if true, edge property has to be changed, else node property |
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| 207 | ///\param prop the id of property that has to changed or updated |
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| 208 | void propertyChange(bool itisedge, int prop); |
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| 209 | |
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| 210 | ///updates the given property |
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| 211 | |
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| 212 | ///\param edge if it is not INVALID, only the property of the given edge will be updated, instead of all of them |
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| 213 | ///\param prop the property to update |
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| 214 | void propertyUpdate(Edge edge, int prop); |
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| 215 | |
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| 216 | ///updates the given property |
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| 217 | |
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| 218 | ///\param node if it is not INVALID, only the property of the given node will be updated, instead of all of them |
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| 219 | ///\param prop the property to update |
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| 220 | void propertyUpdate(Node node, int prop); |
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| 221 | |
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| 222 | ///updates all the property for the given edge |
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[94] | 223 | void propertyUpdate(Edge); |
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[118] | 224 | |
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| 225 | ///updates all the property for the given node |
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[94] | 226 | void propertyUpdate(Node); |
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| 227 | |
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[6] | 228 | ///Callback for 'ViewZoomIn' action. |
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| 229 | virtual void zoomIn(); |
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| 230 | ///Callback for 'ViewZoomOut' action. |
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| 231 | virtual void zoomOut(); |
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| 232 | ///Callback for 'ViewZoomFit' action. |
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| 233 | virtual void zoomFit(); |
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| 234 | ///Callback for 'ViewZoom100' action. |
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| 235 | virtual void zoom100(); |
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| 236 | ///Sets the scroll region of the convas to the bounding box of the graph. |
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| 237 | void updateScrollRegion(); |
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| 238 | |
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[9] | 239 | ///This function changes the tool in the graph-editor's hand |
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| 240 | void changeEditorialTool(int); |
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| 241 | |
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[6] | 242 | protected: |
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| 243 | |
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[118] | 244 | //maximizing, minimizing, restoring window, etc. |
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[6] | 245 | virtual bool on_expose_event(GdkEventExpose *); |
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| 246 | |
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| 247 | private: |
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| 248 | |
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| 249 | ///This function is responsible for the correct |
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| 250 | ///reaction of any action happened in the territory |
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| 251 | ///of the canvas |
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[25] | 252 | ///DEPRECATED!!!! |
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[30] | 253 | bool eventHandler(GdkEvent* e, Node n); |
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[6] | 254 | |
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[9] | 255 | ///actual event handler |
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| 256 | /// |
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| 257 | ///Actual event handler should be stored, to be able to disconnect it and later reconnect it. |
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| 258 | sigc::connection actual_handler; |
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| 259 | |
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| 260 | ///event handler for the case when move-tool is active |
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[30] | 261 | bool moveEventHandler(GdkEvent*); |
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[9] | 262 | ///event handler for the case when create_node-tool is active |
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[30] | 263 | bool createNodeEventHandler(GdkEvent*); |
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[9] | 264 | ///event handler for the case when create_edge-tool is active |
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[30] | 265 | bool createEdgeEventHandler(GdkEvent*); |
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[13] | 266 | ///event handler for the case when eraser-tool is active |
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[30] | 267 | bool eraserEventHandler(GdkEvent*); |
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[149] | 268 | ///event handler for the case when map editor tool is active |
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| 269 | bool mapEditEventHandler(GdkEvent*); |
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[13] | 270 | |
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[160] | 271 | private: |
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| 272 | ///moves node according to the given parameters |
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| 273 | void moveNode(double, double, Gnome::Canvas::Item * item=NULL, Node node=INVALID); |
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| 274 | |
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[21] | 275 | public: |
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[25] | 276 | ///Moves the text to new place |
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[150] | 277 | void textReposition(XY); |
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[118] | 278 | |
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[147] | 279 | ///Activates an edge belonging to an EdgeBase |
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[118] | 280 | |
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[35] | 281 | ///After we have activated an edge this way, |
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| 282 | ///the GDC object will know, which edge is under forming |
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[118] | 283 | ///therefore it can redraw the necessary elements on the canvas, |
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[147] | 284 | ///for example the text belonging to the \ref EdgeBase can be |
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[35] | 285 | ///redrawn (\ref textReposition). |
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[147] | 286 | void toggleEdgeActivity(EdgeBase*, bool); |
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[25] | 287 | |
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| 288 | public: |
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[118] | 289 | |
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| 290 | ///Returns the actual tool in hand |
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[30] | 291 | int getActualTool(); |
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[21] | 292 | |
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[154] | 293 | ///Sets node representation settings |
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[157] | 294 | void setView(bool, bool, double, double); |
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[154] | 295 | |
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| 296 | ///Gets node representation settings |
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[157] | 297 | void getView(bool &, bool &, double&, double&); |
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[154] | 298 | |
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[118] | 299 | ///draws the graph |
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| 300 | |
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| 301 | ///Called when opening a file. |
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[53] | 302 | void drawGraph(); |
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[118] | 303 | |
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| 304 | ///Clears the canvas |
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| 305 | |
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| 306 | ///It achieves this by deleting all data |
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| 307 | ///structure used to help handle the displayed graph. |
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[53] | 308 | void clear(); |
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| 309 | |
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[37] | 310 | ///creates a new Nodemap |
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[118] | 311 | |
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| 312 | ///\param init initial value of the map |
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| 313 | ///\param mapname name of new map |
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| 314 | int addNewNodeMap(double init,std::string mapname); |
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[37] | 315 | ///creates a new Edgemap |
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[118] | 316 | |
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| 317 | ///\param init initial value of the map |
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| 318 | ///\param mapname name of new map |
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| 319 | int addNewEdgeMap(double init,std::string mapname); |
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[37] | 320 | |
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[160] | 321 | void reDesignGraph(); |
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| 322 | |
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| 323 | void get_design_data(double &, double &, int &); |
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| 324 | void set_attraction(double); |
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| 325 | void set_propulsation(double); |
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| 326 | void set_iteration(int); |
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| 327 | |
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[172] | 328 | ///Show whether the graph is already drawn. |
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| 329 | bool is_drawn; |
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| 330 | |
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[21] | 331 | private: |
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[14] | 332 | ///Deletes the given element. |
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[62] | 333 | void deleteItem(Node); |
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[14] | 334 | ///Deletes the given element. |
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[62] | 335 | void deleteItem(Edge); |
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[9] | 336 | |
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[21] | 337 | private: |
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| 338 | |
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[6] | 339 | ///Map of nodes of graph |
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| 340 | Graph::NodeMap<Gnome::Canvas::Ellipse *> nodesmap; |
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| 341 | |
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| 342 | ///Map of edges of graph |
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[147] | 343 | Graph::EdgeMap<EdgeBase*> edgesmap; |
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[6] | 344 | |
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| 345 | ///Map of texts to write on edges |
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| 346 | Graph::EdgeMap<Gnome::Canvas::Text *> edgetextmap; |
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| 347 | |
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[28] | 348 | ///Map of texts to write on nodes |
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| 349 | Graph::NodeMap<Gnome::Canvas::Text *> nodetextmap; |
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| 350 | |
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[6] | 351 | ///Group of graphical elements of displayed_graph |
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| 352 | Gnome::Canvas::Group displayed_graph; |
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| 353 | |
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[88] | 354 | private: |
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[6] | 355 | ///Indicates whether the button of mouse is pressed or not |
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[20] | 356 | int isbutton; |
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[6] | 357 | |
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[21] | 358 | ///Stores the actual tool in hand |
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| 359 | int actual_tool; |
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| 360 | |
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[6] | 361 | ///At this location was the mousebutton pressed. |
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| 362 | ///It helps to calculate the distance of dragging. |
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| 363 | double clicked_x, clicked_y; |
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| 364 | |
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| 365 | ///Remembers which Gnome::Canvas::Item was pressed. |
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[118] | 366 | |
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| 367 | ///this variable is needed, to work on it after selection |
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| 368 | Gnome::Canvas::Item * active_item; |
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| 369 | |
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| 370 | ///Remembers which Gnome::Canvas::Item was pressed. |
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| 371 | |
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| 372 | ///this variable is used at edge creation, it will |
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| 373 | ///be the secondly selected node. No local variable |
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| 374 | ///can be used for this purpose inside the function, |
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| 375 | ///because the node selected by button press, and |
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| 376 | ///the edge is created by button release. Both of |
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| 377 | ///them is different function call. |
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| 378 | Gnome::Canvas::Item * target_item; |
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| 379 | |
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| 380 | ///selected node (for any editing) |
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[62] | 381 | Node active_node; |
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[118] | 382 | |
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| 383 | ///selected edge (for any editing) |
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[62] | 384 | Edge active_edge; |
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[118] | 385 | |
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| 386 | ///the edge that is selected by clicking on the red arrow in the middle of it |
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| 387 | |
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| 388 | ///This edge is stored only for the purpose of reshape it. |
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| 389 | ///That is why it is selected in a different manner. |
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[62] | 390 | Edge forming_edge; |
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[35] | 391 | |
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[118] | 392 | ///Map displayed by label can be edited. |
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| 393 | std::string nodemap_to_edit; |
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| 394 | |
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| 395 | ///Map displayed by label can be edited. |
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| 396 | std::string edgemap_to_edit; |
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[6] | 397 | |
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| 398 | static const int zoom_step = 5; |
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[19] | 399 | |
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[154] | 400 | ///Is node radius autoscaled |
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| 401 | bool autoscale; |
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| 402 | |
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[156] | 403 | ///Should we track zoomfactor changes |
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| 404 | bool zoomtrack; |
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| 405 | |
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| 406 | ///to store the zoom factor when it was "fixed" |
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| 407 | double fixed_zoom_factor; |
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| 408 | |
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[157] | 409 | ///Node radius size |
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| 410 | double radius_size; |
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[154] | 411 | |
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[157] | 412 | ///Edge width |
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| 413 | double edge_width; |
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[154] | 414 | |
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[160] | 415 | ///Iteration number during graph design |
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| 416 | int iterations; |
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| 417 | |
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| 418 | ///Attraction factor during graph design |
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| 419 | double attraction; |
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| 420 | |
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| 421 | ///Propulsation factor during graph design |
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| 422 | double propulsation; |
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[166] | 423 | |
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| 424 | ///Was redesign run on this graph already? |
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| 425 | /// |
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| 426 | ///If not, the layout will be modified randomly |
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| 427 | ///to avoid frozen layout because of wrong |
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| 428 | ///initial state |
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| 429 | bool was_redesigned; |
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[160] | 430 | |
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[88] | 431 | private: |
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| 432 | |
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[118] | 433 | ///reference to the container, in which the canvas is |
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[96] | 434 | NoteBookTab & mytab; |
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[55] | 435 | |
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[148] | 436 | XY calcArrowPos(XY, XY, XY, XY, int); |
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[6] | 437 | }; |
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| 438 | |
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| 439 | #endif //GRAPH_DISPLAYER_CANVAS_H |
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