1 | #include "graph_displayer_canvas.h" |
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2 | #include "broken_edge.h" |
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3 | #include <cmath> |
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4 | |
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5 | GraphDisplayerCanvas::GraphDisplayerCanvas(MapStorage & ms, MapWin & mw, Gtk::Window * mainwin) : |
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6 | nodesmap(ms.graph), edgesmap(ms.graph), edgetextmap(ms.graph), |
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7 | nodetextmap(ms.graph), displayed_graph(*(root()), 0, 0), |
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8 | canvasentrywidget(NULL), mapstorage(ms), isbutton(0), active_item(NULL), |
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9 | target_item(NULL), nodemap_to_edit(""), edgemap_to_edit(""), mapwin(mw) |
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10 | { |
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11 | parentwin=mainwin; |
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12 | |
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13 | //base event handler is move tool |
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14 | actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::moveEventHandler), false); |
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15 | actual_tool=MOVE; |
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16 | |
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17 | //setting event handler for the editor widget |
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18 | entrywidget.signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::entryWidgetChangeHandler), false); |
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19 | |
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20 | active_node=INVALID; |
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21 | active_edge=INVALID; |
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22 | forming_edge=INVALID; |
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23 | } |
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24 | |
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25 | GraphDisplayerCanvas::~GraphDisplayerCanvas() |
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26 | { |
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27 | for (NodeIt n(mapstorage.graph); n != INVALID; ++n) |
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28 | { |
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29 | delete nodesmap[n]; |
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30 | delete nodetextmap[n]; |
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31 | } |
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32 | |
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33 | for (EdgeIt e(mapstorage.graph); e != INVALID; ++e) |
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34 | { |
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35 | delete edgesmap[e]; |
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36 | delete edgetextmap[e]; |
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37 | } |
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38 | |
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39 | if(canvasentrywidget) |
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40 | { |
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41 | delete(canvasentrywidget); |
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42 | } |
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43 | } |
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44 | |
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45 | void GraphDisplayerCanvas::drawGraph() |
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46 | { |
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47 | //first edges are drawn, to hide joining with nodes later |
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48 | |
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49 | for (EdgeIt i(mapstorage.graph); i!=INVALID; ++i) |
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50 | { |
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51 | |
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52 | //drawing green lines, coordinates are from mapstorage.coords |
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53 | |
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54 | Gnome::Canvas::Points coos; |
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55 | coos.push_back(Gnome::Art::Point( |
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56 | mapstorage.coords[mapstorage.graph.source(i)].x, |
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57 | mapstorage.coords[mapstorage.graph.source(i)].y)); |
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58 | coos.push_back(Gnome::Art::Point( |
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59 | mapstorage.coords[mapstorage.graph.target(i)].x, |
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60 | mapstorage.coords[mapstorage.graph.target(i)].y)); |
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61 | |
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62 | edgesmap[i]=new BrokenEdge(displayed_graph, coos, *this); |
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63 | *(edgesmap[i]) << Gnome::Canvas::Properties::fill_color("green"); |
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64 | edgesmap[i]->property_width_units().set_value(10); |
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65 | |
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66 | //initializing edge-text as well, to empty string |
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67 | |
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68 | xy<double> text_pos=edgesmap[i]->getArrowPos(); |
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69 | text_pos+=(xy<double>(10,10)); |
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70 | |
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71 | edgetextmap[i]=new Gnome::Canvas::Text(displayed_graph, text_pos.x, text_pos.y, ""); |
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72 | edgetextmap[i]->property_fill_color().set_value("darkgreen"); |
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73 | edgetextmap[i]->signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::edgeMapEditEventHandler), false); |
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74 | } |
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75 | |
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76 | //afterwards nodes come to be drawn |
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77 | |
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78 | for (NodeIt i(mapstorage.graph); i!=INVALID; ++i) |
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79 | { |
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80 | //drawing bule nodes, with black line around them |
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81 | |
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82 | nodesmap[i]=new Gnome::Canvas::Ellipse( |
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83 | displayed_graph, |
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84 | mapstorage.coords[i].x-20, |
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85 | mapstorage.coords[i].y-20, |
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86 | mapstorage.coords[i].x+20, |
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87 | mapstorage.coords[i].y+20); |
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88 | *(nodesmap[i]) << Gnome::Canvas::Properties::fill_color("blue"); |
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89 | *(nodesmap[i]) << Gnome::Canvas::Properties::outline_color("black"); |
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90 | |
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91 | //initializing edge-text as well, to empty string |
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92 | |
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93 | xy<double> text_pos( |
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94 | (mapstorage.coords[i].x+node_property_defaults[N_RADIUS]+5), |
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95 | (mapstorage.coords[i].y+node_property_defaults[N_RADIUS]+5)); |
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96 | |
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97 | nodetextmap[i]=new Gnome::Canvas::Text(displayed_graph, |
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98 | text_pos.x, text_pos.y, ""); |
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99 | nodetextmap[i]->property_fill_color().set_value("darkblue"); |
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100 | nodetextmap[i]->signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::nodeMapEditEventHandler), false); |
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101 | } |
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102 | |
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103 | updateScrollRegion(); |
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104 | } |
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105 | |
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106 | void GraphDisplayerCanvas::clear() |
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107 | { |
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108 | active_node=INVALID; |
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109 | active_edge=INVALID; |
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110 | forming_edge=INVALID; |
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111 | |
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112 | for (NodeIt n(mapstorage.graph); n != INVALID; ++n) |
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113 | { |
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114 | delete nodesmap[n]; |
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115 | delete nodetextmap[n]; |
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116 | } |
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117 | |
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118 | for (EdgeIt e(mapstorage.graph); e != INVALID; ++e) |
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119 | { |
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120 | delete edgesmap[e]; |
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121 | delete edgetextmap[e]; |
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122 | } |
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123 | } |
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