COIN-OR::LEMON - Graph Library

source: lemon-0.x/gui/graph_displayer_canvas.cc @ 1523:144ab0e4b09c

Last change on this file since 1523:144ab0e4b09c was 1512:e54392395480, checked in by Hegyi Péter, 15 years ago

NodeMap? values are now visualizable. Todo: default map-values

  • Property exe set to *
File size: 3.1 KB
Line 
1#include <graph_displayer_canvas.h>
2#include <broken_edge.h>
3#include <math.h>
4
5GraphDisplayerCanvas::GraphDisplayerCanvas(Graph & gr, CoordinatesMap & cm, MapStorage & ms, MapWin * mw):g(gr),nodesmap(g),edgesmap(g),edgetextmap(g),nodetextmap(g),displayed_graph(*(root()), 0, 0),mapstorage(ms),isbutton(0),active_item(NULL),target_item(NULL),mapwin(mw)
6{
7 
8  actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::create_node_event_handler), false);
9  actual_tool=CREATE_NODE;
10
11  active_node=INVALID;
12  active_edge=INVALID;
13
14  //set_center_scroll_region(true);
15
16  //first edges are drawn, to hide joining with nodes later
17
18  for (EdgeIt i(g); i!=INVALID; ++i)
19  {
20
21    //drawing green lines, coordinates are from cm
22
23    Gnome::Canvas::Points coos;
24    coos.push_back(Gnome::Art::Point(cm[g.source(i)].x,cm[g.source(i)].y));
25    coos.push_back(Gnome::Art::Point(cm[g.target(i)].x,cm[g.target(i)].y));
26   
27    edgesmap[i]=new BrokenEdge(displayed_graph, coos, *this);
28    *(edgesmap[i]) << Gnome::Canvas::Properties::fill_color("green");
29    edgesmap[i]->property_width_pixels().set_value(10);   
30   
31    //initializing edge-text as well, to empty string
32
33    xy<double> text_pos=edgesmap[i]->get_arrow_pos();
34    text_pos+=(xy<double>(10,10));
35
36    edgetextmap[i]=new Gnome::Canvas::Text(displayed_graph, text_pos.x, text_pos.y, "");
37    edgetextmap[i]->property_fill_color().set_value("darkgreen");
38  }
39
40  //afterwards nodes come to be drawn
41
42  NodeIt i(g);
43  int maxx=0, maxy=0, minx=(int)cm[i].x, miny=(int)cm[i].y;
44
45  for (; i!=INVALID; ++i)
46  {
47    //minimum and maximum is gathered to be able to zoom to the graph correctly (whole figure should be seen)
48
49    if(cm[i].x>maxx)maxx=(int)cm[i].x;
50    if(cm[i].y>maxy)maxy=(int)cm[i].y;
51    if(cm[i].x<minx)minx=(int)cm[i].x;
52    if(cm[i].y<miny)miny=(int)cm[i].y;
53
54    //drawing bule nodes, with black line around them
55
56    nodesmap[i]=new Gnome::Canvas::Ellipse(displayed_graph, cm[i].x-20, cm[i].y-20, cm[i].x+20, cm[i].y+20);
57    *(nodesmap[i]) << Gnome::Canvas::Properties::fill_color("blue");
58    *(nodesmap[i]) << Gnome::Canvas::Properties::outline_color("black");
59
60    //initializing edge-text as well, to empty string
61
62    xy<double> text_pos((cm[i].x+node_property_defaults[N_RADIUS]+5),(cm[i].y+node_property_defaults[N_RADIUS]+5));
63
64    nodetextmap[i]=new Gnome::Canvas::Text(displayed_graph, text_pos.x, text_pos.y, "");
65    nodetextmap[i]->property_fill_color().set_value("darkblue");
66  }
67
68  updateScrollRegion();
69}
70
71GraphDisplayerCanvas::~GraphDisplayerCanvas()
72{
73
74  //writing out the end state of the graph
75  //\todo all the maps has to be write out!
76
77  Graph::NodeMap <int> id(g);
78  Graph::NodeMap <double> xc(g);
79  Graph::NodeMap <double> yc(g);
80 
81  int j=1;
82 
83  for (NodeIt i(g); i!=INVALID; ++i)
84  {
85    double x1,y1,x2,y2;
86    nodesmap[i]->get_bounds(x1, y1, x2, y2);
87   
88    id[i]=j++;
89    xc[i]=(x1+x2)/2;
90    yc[i]=(y1+y2)/2;
91  }
92
93  GraphWriter<Graph> writer(std::cout,g);
94 
95  writer.writeNodeMap("id", id);
96  writer.writeNodeMap("coordinates_x", xc);
97  writer.writeNodeMap("coordinates_y", yc);
98  writer.run();
99}
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