[1442] | 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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[1501] | 6 | class GraphDisplayerCanvas; |
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| 7 | |
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[1606] | 8 | #include "all_include.h" |
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| 9 | #include "mapstorage.h" |
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| 10 | #include "broken_edge.h" |
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| 11 | #include "map_win.h" |
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[1442] | 12 | #include <libgnomecanvasmm.h> |
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| 13 | #include <libgnomecanvasmm/polygon.h> |
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| 14 | |
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| 15 | ///This class is the canvas, on which the graph can be drawn. |
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| 16 | class GraphDisplayerCanvas : public Gnome::Canvas::CanvasAA |
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| 17 | { |
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| 18 | typedef Gnome::Canvas::CanvasAA Parent; |
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| 19 | |
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| 20 | public: |
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[1614] | 21 | GraphDisplayerCanvas(MapStorage &, MapWin &, Gtk::Window *); |
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[1442] | 22 | virtual ~GraphDisplayerCanvas(); |
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| 23 | |
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| 24 | ///Changes the linewidth attribute according to the given map. |
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| 25 | ///\param mapname is the name of the map which contains the new values |
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[1643] | 26 | int changeEdgeWidth (std::string mapname, Edge new_item=INVALID); |
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[1731] | 27 | int resetEdgeWidth (Edge new_item=INVALID); |
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[1442] | 28 | |
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| 29 | ///Changes the linecolor attribute according to the given map. |
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| 30 | ///\param mapname is the name of the map which contains the new values |
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[1643] | 31 | int changeEdgeColor (std::string mapname, Edge new_item=INVALID); |
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[1731] | 32 | int resetEdgeColor (Edge new_item=INVALID); |
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[1442] | 33 | |
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| 34 | ///Changes the text of line attribute according to the given map. |
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| 35 | ///\param mapname is the name of the map which contains the new values |
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[1643] | 36 | int changeEdgeText (std::string mapname, Edge new_item=INVALID); |
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[1731] | 37 | int resetEdgeText (Edge new_item=INVALID); |
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[1512] | 38 | |
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| 39 | ///Changes the linewidth attribute according to the given map. |
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| 40 | ///\param mapname is the name of the map which contains the new values |
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[1643] | 41 | int changeNodeRadius (std::string mapname, Node new_item=INVALID); |
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[1731] | 42 | int resetNodeRadius (Node new_item=INVALID); |
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[1512] | 43 | |
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| 44 | ///Changes the linecolor attribute according to the given map. |
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| 45 | ///\param mapname is the name of the map which contains the new values |
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[1643] | 46 | int changeNodeColor (std::string mapname, Node new_item=INVALID); |
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[1731] | 47 | int resetNodeColor (Node new_item=INVALID); |
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[1512] | 48 | |
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| 49 | ///Changes the text of line attribute according to the given map. |
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| 50 | ///\param mapname is the name of the map which contains the new values |
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[1643] | 51 | int changeNodeText (std::string mapname, Node new_item=INVALID); |
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[1731] | 52 | int resetNodeText (Node new_item=INVALID); |
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[1442] | 53 | |
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| 54 | ///Callback for 'ViewZoomIn' action. |
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| 55 | virtual void zoomIn(); |
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| 56 | ///Callback for 'ViewZoomOut' action. |
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| 57 | virtual void zoomOut(); |
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| 58 | ///Callback for 'ViewZoomFit' action. |
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| 59 | virtual void zoomFit(); |
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| 60 | ///Callback for 'ViewZoom100' action. |
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| 61 | virtual void zoom100(); |
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| 62 | ///Sets the scroll region of the convas to the bounding box of the graph. |
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| 63 | void updateScrollRegion(); |
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| 64 | |
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[1468] | 65 | ///This function changes the tool in the graph-editor's hand |
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| 66 | void changeEditorialTool(int); |
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| 67 | |
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[1442] | 68 | protected: |
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| 69 | |
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| 70 | //maximizing, minimizing, restoring window, etc. |
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| 71 | virtual bool on_expose_event(GdkEventExpose *); |
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| 72 | |
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| 73 | private: |
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| 74 | |
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| 75 | ///This function is responsible for the correct |
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| 76 | ///reaction of any action happened in the territory |
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| 77 | ///of the canvas |
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[1505] | 78 | ///DEPRECATED!!!! |
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[1524] | 79 | bool eventHandler(GdkEvent* e, Node n); |
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[1442] | 80 | |
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[1468] | 81 | ///actual event handler |
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| 82 | /// |
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| 83 | ///Actual event handler should be stored, to be able to disconnect it and later reconnect it. |
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| 84 | sigc::connection actual_handler; |
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| 85 | |
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| 86 | ///event handler for the case when move-tool is active |
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[1524] | 87 | bool moveEventHandler(GdkEvent*); |
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[1468] | 88 | ///event handler for the case when create_node-tool is active |
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[1524] | 89 | bool createNodeEventHandler(GdkEvent*); |
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[1468] | 90 | ///event handler for the case when create_edge-tool is active |
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[1524] | 91 | bool createEdgeEventHandler(GdkEvent*); |
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[1485] | 92 | ///event handler for the case when eraser-tool is active |
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[1524] | 93 | bool eraserEventHandler(GdkEvent*); |
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[1550] | 94 | ///event handler for the case when edge map editor tool is active |
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[1524] | 95 | bool edgeMapEditEventHandler(GdkEvent*); |
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[1550] | 96 | ///event handler for the case when node map editor tool is active |
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| 97 | bool nodeMapEditEventHandler(GdkEvent*); |
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[1485] | 98 | |
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[1501] | 99 | public: |
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[1505] | 100 | ///Moves the text to new place |
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[1524] | 101 | void textReposition(xy<double>); |
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[1505] | 102 | ///Activates an edge belonging to a BrokenEdge |
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[1579] | 103 | /// |
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| 104 | ///After we have activated an edge this way, |
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| 105 | ///the GDC object will know, which edge is under forming |
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| 106 | ///therefore it can redraw the necessarz elementy on the canvas, |
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| 107 | ///for example the text belonging to the \ref BrokenEdge can be |
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| 108 | ///redrawn (\ref textReposition). |
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[1524] | 109 | void toggleEdgeActivity(BrokenEdge*, bool); |
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[1505] | 110 | |
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| 111 | public: |
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[1501] | 112 | ///\return the actual tool in hand |
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[1524] | 113 | int getActualTool(); |
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[1501] | 114 | |
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[1606] | 115 | void drawGraph(); |
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| 116 | void clear(); |
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| 117 | |
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[1585] | 118 | ///creates a new Nodemap |
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[1597] | 119 | int addNewNodeMap(double,std::string); |
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[1585] | 120 | ///creates a new Edgemap |
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[1597] | 121 | int addNewEdgeMap(double,std::string); |
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[1585] | 122 | |
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[1501] | 123 | private: |
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[1486] | 124 | ///Deletes the given element. |
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[1643] | 125 | void deleteItem(Node); |
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[1486] | 126 | ///Deletes the given element. |
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[1643] | 127 | void deleteItem(Edge); |
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[1468] | 128 | |
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[1501] | 129 | private: |
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| 130 | |
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[1442] | 131 | ///Map of nodes of graph |
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| 132 | Graph::NodeMap<Gnome::Canvas::Ellipse *> nodesmap; |
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| 133 | |
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| 134 | ///Map of edges of graph |
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[1499] | 135 | Graph::EdgeMap<BrokenEdge *> edgesmap; |
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[1442] | 136 | |
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| 137 | ///Map of texts to write on edges |
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| 138 | Graph::EdgeMap<Gnome::Canvas::Text *> edgetextmap; |
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| 139 | |
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[1512] | 140 | ///Map of texts to write on nodes |
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| 141 | Graph::NodeMap<Gnome::Canvas::Text *> nodetextmap; |
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| 142 | |
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[1442] | 143 | ///Group of graphical elements of displayed_graph |
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| 144 | Gnome::Canvas::Group displayed_graph; |
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| 145 | |
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| 146 | ///Here we store the maps that can be displayed through properties. |
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[1589] | 147 | MapStorage & mapstorage; |
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[1442] | 148 | |
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| 149 | ///Indicates whether the button of mouse is pressed or not |
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[1500] | 150 | int isbutton; |
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[1442] | 151 | |
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[1501] | 152 | ///Stores the actual tool in hand |
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| 153 | int actual_tool; |
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| 154 | |
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[1442] | 155 | ///At this location was the mousebutton pressed. |
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| 156 | ///It helps to calculate the distance of dragging. |
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| 157 | double clicked_x, clicked_y; |
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| 158 | |
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| 159 | ///Remembers which Gnome::Canvas::Item was pressed. |
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| 160 | ///this variable is needed, because |
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| 161 | ///1. we cannot query the item at he cursor as fast as it could not cause a Segmentation Fault |
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| 162 | ///2. we would like to handle only ony item per movement, therefore quering it is not a working solution |
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[1474] | 163 | Gnome::Canvas::Item * active_item, * target_item; |
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[1643] | 164 | Node active_node; |
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| 165 | Edge active_edge; |
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| 166 | Edge forming_edge; |
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[1579] | 167 | |
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| 168 | std::string nodemap_to_edit, edgemap_to_edit; |
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[1442] | 169 | |
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| 170 | static const int zoom_step = 5; |
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[1499] | 171 | |
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[1512] | 172 | ///We need to store mapwin, to be able to ask the appropriate values for properties of new items. |
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[1606] | 173 | MapWin & mapwin; |
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[1512] | 174 | |
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[1648] | 175 | ///pointer to the parent window |
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[1614] | 176 | Gtk::Window * parentwin; |
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| 177 | |
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[1442] | 178 | }; |
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| 179 | |
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| 180 | #endif //GRAPH_DISPLAYER_CANVAS_H |
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