A bit more information on installation.
1 #include <graph_displayer_canvas.h>
2 #include <broken_edge.h>
5 GraphDisplayerCanvas::GraphDisplayerCanvas(Graph & gr, CoordinatesMap & cm, MapStorage & ms, MapWin * mw):g(gr),nodesmap(g),edgesmap(g),edgetextmap(g),nodetextmap(g),displayed_graph(*(root()), 0, 0),canvasentrywidget(NULL),mapstorage(ms),isbutton(0),active_item(NULL),target_item(NULL),mapwin(mw)
11 //setting event handler for the editor widget
12 entrywidget.signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::entryWidgetChangeHandler), false);
14 //base event handler is move tool
15 actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::moveEventHandler), false);
16 actual_tool=CREATE_NODE;
18 //set_center_scroll_region(true);
20 //first edges are drawn, to hide joining with nodes later
22 for (EdgeIt i(g); i!=INVALID; ++i)
25 //drawing green lines, coordinates are from cm
27 Gnome::Canvas::Points coos;
28 coos.push_back(Gnome::Art::Point(cm[g.source(i)].x,cm[g.source(i)].y));
29 coos.push_back(Gnome::Art::Point(cm[g.target(i)].x,cm[g.target(i)].y));
31 edgesmap[i]=new BrokenEdge(displayed_graph, coos, *this);
32 *(edgesmap[i]) << Gnome::Canvas::Properties::fill_color("green");
33 edgesmap[i]->property_width_pixels().set_value(10);
35 //initializing edge-text as well, to empty string
37 xy<double> text_pos=edgesmap[i]->getArrowPos();
38 text_pos+=(xy<double>(10,10));
40 edgetextmap[i]=new Gnome::Canvas::Text(displayed_graph, text_pos.x, text_pos.y, "");
41 edgetextmap[i]->property_fill_color().set_value("darkgreen");
44 //afterwards nodes come to be drawn
47 int maxx=0, maxy=0, minx=(int)cm[i].x, miny=(int)cm[i].y;
49 for (; i!=INVALID; ++i)
51 //minimum and maximum is gathered to be able to zoom to the graph correctly (whole figure should be seen)
53 if(cm[i].x>maxx)maxx=(int)cm[i].x;
54 if(cm[i].y>maxy)maxy=(int)cm[i].y;
55 if(cm[i].x<minx)minx=(int)cm[i].x;
56 if(cm[i].y<miny)miny=(int)cm[i].y;
58 //drawing bule nodes, with black line around them
60 nodesmap[i]=new Gnome::Canvas::Ellipse(displayed_graph, cm[i].x-20, cm[i].y-20, cm[i].x+20, cm[i].y+20);
61 *(nodesmap[i]) << Gnome::Canvas::Properties::fill_color("blue");
62 *(nodesmap[i]) << Gnome::Canvas::Properties::outline_color("black");
64 //initializing edge-text as well, to empty string
66 xy<double> text_pos((cm[i].x+node_property_defaults[N_RADIUS]+5),(cm[i].y+node_property_defaults[N_RADIUS]+5));
68 nodetextmap[i]=new Gnome::Canvas::Text(displayed_graph, text_pos.x, text_pos.y, "");
69 nodetextmap[i]->property_fill_color().set_value("darkblue");
75 GraphDisplayerCanvas::~GraphDisplayerCanvas()
79 delete(canvasentrywidget);
82 //writing out the end state of the graph
83 //\todo all the maps has to be write out!
85 Graph::NodeMap <int> id(g);
86 Graph::NodeMap <double> xc(g);
87 Graph::NodeMap <double> yc(g);
91 for (NodeIt i(g); i!=INVALID; ++i)
94 nodesmap[i]->get_bounds(x1, y1, x2, y2);
101 GraphWriter<Graph> writer(std::cout,g);
103 writer.writeNodeMap("id", id);
104 writer.writeNodeMap("coordinates_x", xc);
105 writer.writeNodeMap("coordinates_y", yc);