COIN-OR::LEMON - Graph Library

source: lemon-0.x/gui/graph_displayer_canvas.cc @ 1649:95c8cd25a456

Last change on this file since 1649:95c8cd25a456 was 1648:dd8672338691, checked in by Akos Ladanyi, 15 years ago
  • use Gtk::Dialog to set the new values of edge and node maps
  • update all edges/nodes when editing a map so that edge widths and node sizes change properly
  • coordinate maps are no longer selectable in the maps window
  • Property exe set to *
File size: 3.6 KB
Line 
1#include "graph_displayer_canvas.h"
2#include "broken_edge.h"
3#include <cmath>
4
5GraphDisplayerCanvas::GraphDisplayerCanvas(MapStorage & ms, MapWin & mw, Gtk::Window * mainwin) :
6  nodesmap(ms.graph), edgesmap(ms.graph), edgetextmap(ms.graph),
7  nodetextmap(ms.graph), displayed_graph(*(root()), 0, 0), mapstorage(ms),
8  isbutton(0), active_item(NULL), target_item(NULL), nodemap_to_edit(""),
9  edgemap_to_edit(""), mapwin(mw)
10{
11  parentwin=mainwin;
12
13  //base event handler is move tool
14  actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::moveEventHandler), false);
15  actual_tool=MOVE;
16
17  active_node=INVALID;
18  active_edge=INVALID;
19  forming_edge=INVALID;
20}
21
22GraphDisplayerCanvas::~GraphDisplayerCanvas()
23{
24  for (NodeIt n(mapstorage.graph); n != INVALID; ++n)
25  {
26    delete nodesmap[n];
27    delete nodetextmap[n];
28  }
29
30  for (EdgeIt e(mapstorage.graph); e != INVALID; ++e)
31  {
32    delete edgesmap[e];
33    delete edgetextmap[e];
34  }
35}
36
37void GraphDisplayerCanvas::drawGraph()
38{
39  //first edges are drawn, to hide joining with nodes later
40
41  for (EdgeIt i(mapstorage.graph); i!=INVALID; ++i)
42  {
43
44    //drawing green lines, coordinates are from mapstorage.coords
45
46    Gnome::Canvas::Points coos;
47    coos.push_back(Gnome::Art::Point(
48          mapstorage.coords[mapstorage.graph.source(i)].x,
49          mapstorage.coords[mapstorage.graph.source(i)].y));
50    coos.push_back(Gnome::Art::Point(
51          mapstorage.coords[mapstorage.graph.target(i)].x,
52          mapstorage.coords[mapstorage.graph.target(i)].y));
53   
54    edgesmap[i]=new BrokenEdge(displayed_graph, coos, *this);
55    *(edgesmap[i]) << Gnome::Canvas::Properties::fill_color("green");
56    edgesmap[i]->property_width_units().set_value(10);   
57    edgesmap[i]->lower_to_bottom();
58   
59    //initializing edge-text as well, to empty string
60
61    xy<double> text_pos=edgesmap[i]->getArrowPos();
62    text_pos+=(xy<double>(10,10));
63
64    edgetextmap[i]=new Gnome::Canvas::Text(displayed_graph, text_pos.x, text_pos.y, "");
65    edgetextmap[i]->property_fill_color().set_value("darkgreen");
66    edgetextmap[i]->signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::edgeMapEditEventHandler), false);
67    edgetextmap[i]->raise_to_top();
68  }
69
70  //afterwards nodes come to be drawn
71
72  for (NodeIt i(mapstorage.graph); i!=INVALID; ++i)
73  {
74    //drawing bule nodes, with black line around them
75
76    nodesmap[i]=new Gnome::Canvas::Ellipse(
77        displayed_graph,
78        mapstorage.coords[i].x-20,
79        mapstorage.coords[i].y-20,
80        mapstorage.coords[i].x+20,
81        mapstorage.coords[i].y+20);
82    *(nodesmap[i]) << Gnome::Canvas::Properties::fill_color("blue");
83    *(nodesmap[i]) << Gnome::Canvas::Properties::outline_color("black");
84    nodesmap[i]->raise_to_top();
85
86    //initializing edge-text as well, to empty string
87
88    xy<double> text_pos(
89        (mapstorage.coords[i].x+node_property_defaults[N_RADIUS]+5),
90        (mapstorage.coords[i].y+node_property_defaults[N_RADIUS]+5));
91
92    nodetextmap[i]=new Gnome::Canvas::Text(displayed_graph,
93        text_pos.x, text_pos.y, "");
94    nodetextmap[i]->property_fill_color().set_value("darkblue");
95    nodetextmap[i]->signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::nodeMapEditEventHandler), false);
96    nodetextmap[i]->raise_to_top();
97  }
98
99  updateScrollRegion();
100}
101
102void GraphDisplayerCanvas::clear()
103{
104  active_node=INVALID;
105  active_edge=INVALID;
106  forming_edge=INVALID;
107
108  for (NodeIt n(mapstorage.graph); n != INVALID; ++n)
109  {
110    delete nodesmap[n];
111    delete nodetextmap[n];
112  }
113
114  for (EdgeIt e(mapstorage.graph); e != INVALID; ++e)
115  {
116    delete edgesmap[e];
117    delete edgetextmap[e];
118  }
119}
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