COIN-OR::LEMON - Graph Library

source: lemon-0.x/gui/graph_displayer_canvas.cc @ 1510:cde847387b5a

Last change on this file since 1510:cde847387b5a was 1510:cde847387b5a, checked in by Hegyi Péter, 15 years ago

File graph_displayer is split in functional parts.

  • Property exe set to *
File size: 2.8 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):g(gr),nodesmap(g),edgesmap(g),edgetextmap(g),displayed_graph(*(root()), 0, 0),mapstorage(ms),isbutton(0),active_item(NULL),target_item(NULL)
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("black");
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    //!!!!!!! (nodesmap[i])->signal_event().connect(sigc::bind(sigc::mem_fun(*this, &GraphDisplayerCanvas::event_handler),i));
60  }
61
62  updateScrollRegion();
63}
64
65GraphDisplayerCanvas::~GraphDisplayerCanvas()
66{
67
68  //writing out the end state of the graph
69  //\todo all the maps has to be write out!
70
71  Graph::NodeMap <int> id(g);
72  Graph::NodeMap <double> xc(g);
73  Graph::NodeMap <double> yc(g);
74 
75  int j=1;
76 
77  for (NodeIt i(g); i!=INVALID; ++i)
78  {
79    double x1,y1,x2,y2;
80    nodesmap[i]->get_bounds(x1, y1, x2, y2);
81   
82    id[i]=j++;
83    xc[i]=(x1+x2)/2;
84    yc[i]=(y1+y2)/2;
85  }
86
87  GraphWriter<Graph> writer(std::cout,g);
88 
89  writer.writeNodeMap("id", id);
90  writer.writeNodeMap("coordinates_x", xc);
91  writer.writeNodeMap("coordinates_y", yc);
92  writer.run();
93}
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