COIN-OR::LEMON - Graph Library

source: lemon-0.x/gui/graph_displayer_canvas.cc @ 1632:93ac8c521fe5

Last change on this file since 1632:93ac8c521fe5 was 1632:93ac8c521fe5, checked in by Alpar Juttner, 14 years ago

math.h -> cmath

  • Property exe set to *
File size: 3.7 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),
8  canvasentrywidget(NULL), mapstorage(ms), isbutton(0), active_item(NULL),
9  target_item(NULL), nodemap_to_edit(""), 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  //setting event handler for the editor widget
18  entrywidget.signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::entryWidgetChangeHandler), false);
19
20  active_node=INVALID;
21  active_edge=INVALID;
22  forming_edge=INVALID;
23}
24
25GraphDisplayerCanvas::~GraphDisplayerCanvas()
26{
27  for (NodeIt n(mapstorage.graph); n != INVALID; ++n)
28  {
29    delete nodesmap[n];
30    delete nodetextmap[n];
31  }
32
33  for (EdgeIt e(mapstorage.graph); e != INVALID; ++e)
34  {
35    delete edgesmap[e];
36    delete edgetextmap[e];
37  }
38
39  if(canvasentrywidget)
40  {
41    delete(canvasentrywidget);
42  }
43}
44
45void GraphDisplayerCanvas::drawGraph()
46{
47  //first edges are drawn, to hide joining with nodes later
48
49  for (EdgeIt i(mapstorage.graph); i!=INVALID; ++i)
50  {
51
52    //drawing green lines, coordinates are from mapstorage.coords
53
54    Gnome::Canvas::Points coos;
55    coos.push_back(Gnome::Art::Point(
56          mapstorage.coords[mapstorage.graph.source(i)].x,
57          mapstorage.coords[mapstorage.graph.source(i)].y));
58    coos.push_back(Gnome::Art::Point(
59          mapstorage.coords[mapstorage.graph.target(i)].x,
60          mapstorage.coords[mapstorage.graph.target(i)].y));
61   
62    edgesmap[i]=new BrokenEdge(displayed_graph, coos, *this);
63    *(edgesmap[i]) << Gnome::Canvas::Properties::fill_color("green");
64    edgesmap[i]->property_width_units().set_value(10);   
65   
66    //initializing edge-text as well, to empty string
67
68    xy<double> text_pos=edgesmap[i]->getArrowPos();
69    text_pos+=(xy<double>(10,10));
70
71    edgetextmap[i]=new Gnome::Canvas::Text(displayed_graph, text_pos.x, text_pos.y, "");
72    edgetextmap[i]->property_fill_color().set_value("darkgreen");
73    edgetextmap[i]->signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::edgeMapEditEventHandler), false);
74  }
75
76  //afterwards nodes come to be drawn
77
78  for (NodeIt i(mapstorage.graph); i!=INVALID; ++i)
79  {
80    //drawing bule nodes, with black line around them
81
82    nodesmap[i]=new Gnome::Canvas::Ellipse(
83        displayed_graph,
84        mapstorage.coords[i].x-20,
85        mapstorage.coords[i].y-20,
86        mapstorage.coords[i].x+20,
87        mapstorage.coords[i].y+20);
88    *(nodesmap[i]) << Gnome::Canvas::Properties::fill_color("blue");
89    *(nodesmap[i]) << Gnome::Canvas::Properties::outline_color("black");
90
91    //initializing edge-text as well, to empty string
92
93    xy<double> text_pos(
94        (mapstorage.coords[i].x+node_property_defaults[N_RADIUS]+5),
95        (mapstorage.coords[i].y+node_property_defaults[N_RADIUS]+5));
96
97    nodetextmap[i]=new Gnome::Canvas::Text(displayed_graph,
98        text_pos.x, text_pos.y, "");
99    nodetextmap[i]->property_fill_color().set_value("darkblue");
100    nodetextmap[i]->signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::nodeMapEditEventHandler), false);
101  }
102
103  updateScrollRegion();
104}
105
106void GraphDisplayerCanvas::clear()
107{
108  active_node=INVALID;
109  active_edge=INVALID;
110  forming_edge=INVALID;
111
112  for (NodeIt n(mapstorage.graph); n != INVALID; ++n)
113  {
114    delete nodesmap[n];
115    delete nodetextmap[n];
116  }
117
118  for (EdgeIt e(mapstorage.graph); e != INVALID; ++e)
119  {
120    delete edgesmap[e];
121    delete edgetextmap[e];
122  }
123}
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