COIN-OR::LEMON - Graph Library

source: lemon-0.x/gui/graph_displayer_canvas.h @ 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
File size: 5.6 KB
Line 
1// -*- C++ -*- //
2
3#ifndef GRAPH_DISPLAYER_CANVAS_H
4#define GRAPH_DISPLAYER_CANVAS_H
5
6class GraphDisplayerCanvas;
7
8#include "all_include.h"
9#include "mapstorage.h"
10#include "broken_edge.h"
11#include "map_win.h"
12#include <libgnomecanvasmm.h>
13#include <libgnomecanvasmm/polygon.h>
14
15///This class is the canvas, on which the graph can be drawn.
16class GraphDisplayerCanvas : public Gnome::Canvas::CanvasAA
17{
18  typedef Gnome::Canvas::CanvasAA Parent;
19
20public:
21  GraphDisplayerCanvas(MapStorage &, MapWin &, Gtk::Window *);
22  virtual ~GraphDisplayerCanvas();
23
24  ///Changes the linewidth attribute according to the given map.
25  ///\param mapname is the name of the map which contains the new values
26  int changeEdgeWidth (std::string mapname, Edge new_item=INVALID);
27
28  ///Changes the linecolor attribute according to the given map.
29  ///\param mapname is the name of the map which contains the new values
30  int changeEdgeColor (std::string mapname, Edge new_item=INVALID);
31
32  ///Changes the text of line attribute according to the given map.
33  ///\param mapname is the name of the map which contains the new values
34  int changeEdgeText (std::string mapname, Edge new_item=INVALID);
35
36  ///Changes the linewidth attribute according to the given map.
37  ///\param mapname is the name of the map which contains the new values
38  int changeNodeRadius (std::string mapname, Node new_item=INVALID);
39
40  ///Changes the linecolor attribute according to the given map.
41  ///\param mapname is the name of the map which contains the new values
42  int changeNodeColor (std::string mapname, Node new_item=INVALID);
43
44  ///Changes the text of line attribute according to the given map.
45  ///\param mapname is the name of the map which contains the new values
46  int changeNodeText (std::string mapname, Node new_item=INVALID);
47
48  ///Callback for 'ViewZoomIn' action.
49  virtual void zoomIn();
50  ///Callback for 'ViewZoomOut' action.
51  virtual void zoomOut();
52  ///Callback for 'ViewZoomFit' action.
53  virtual void zoomFit();
54  ///Callback for 'ViewZoom100' action.
55  virtual void zoom100();
56  ///Sets the scroll region of the convas to the bounding box of the graph.
57  void updateScrollRegion();
58
59  ///This function changes the tool in the graph-editor's hand
60  void changeEditorialTool(int);
61
62protected:
63
64  //maximizing, minimizing, restoring window, etc.
65  virtual bool on_expose_event(GdkEventExpose *);
66
67private:
68
69  ///This function is responsible for the correct
70  ///reaction of any action happened in the territory
71  ///of the canvas
72  ///DEPRECATED!!!!
73  bool eventHandler(GdkEvent* e, Node n);
74
75  ///actual event handler
76  ///
77  ///Actual event handler should be stored, to be able to disconnect it and later reconnect it.
78  sigc::connection actual_handler;
79
80  ///event handler for the case when move-tool is active
81  bool moveEventHandler(GdkEvent*);
82  ///event handler for the case when create_node-tool is active
83  bool createNodeEventHandler(GdkEvent*);
84  ///event handler for the case when create_edge-tool is active
85  bool createEdgeEventHandler(GdkEvent*);
86  ///event handler for the case when eraser-tool is active
87  bool eraserEventHandler(GdkEvent*);
88  ///event handler for the case when edge map editor tool is active
89  bool edgeMapEditEventHandler(GdkEvent*);
90  ///event handler for the case when node map editor tool is active
91  bool nodeMapEditEventHandler(GdkEvent*);
92
93public:
94  ///Moves the text to new place
95  void textReposition(xy<double>);
96  ///Activates an edge belonging to a BrokenEdge
97  ///
98  ///After we have activated an edge this way,
99  ///the GDC object will know, which edge is under forming
100  ///therefore it can redraw the necessarz elementy on the canvas,
101  ///for example the text belonging to the \ref BrokenEdge can be
102  ///redrawn (\ref textReposition).
103  void toggleEdgeActivity(BrokenEdge*, bool);
104
105public:
106  ///\return the actual tool in hand
107  int getActualTool();
108
109  void drawGraph();
110  void clear();
111
112  ///creates a new Nodemap
113  int addNewNodeMap(double,std::string);
114  ///creates a new Edgemap
115  int addNewEdgeMap(double,std::string);
116
117private:
118  ///Deletes the given element.
119  void deleteItem(Node);
120  ///Deletes the given element.
121  void deleteItem(Edge);
122
123private:
124
125  ///Map of nodes of graph
126  Graph::NodeMap<Gnome::Canvas::Ellipse *> nodesmap;
127
128  ///Map of edges of graph
129  Graph::EdgeMap<BrokenEdge *> edgesmap;
130
131  ///Map of texts to write on edges
132  Graph::EdgeMap<Gnome::Canvas::Text *> edgetextmap;
133
134  ///Map of texts to write on nodes
135  Graph::NodeMap<Gnome::Canvas::Text *> nodetextmap;
136
137  ///Group of graphical elements of displayed_graph
138  Gnome::Canvas::Group displayed_graph;
139
140  ///Here we store the maps that can be displayed through properties.
141  MapStorage & mapstorage;
142
143  ///Indicates whether the button of mouse is pressed or not
144  int isbutton;
145
146  ///Stores the actual tool in hand
147  int actual_tool;
148
149  ///At this location was the mousebutton pressed.
150  ///It helps to calculate the distance of dragging.
151  double clicked_x, clicked_y;
152
153  ///Remembers which Gnome::Canvas::Item was pressed.
154  ///this variable is needed, because
155  ///1. we cannot query the item at he cursor as fast as it could not cause a Segmentation Fault
156  ///2. we would like to handle only ony item per movement, therefore quering it is not a working solution
157  Gnome::Canvas::Item * active_item, * target_item;
158  Node active_node;
159  Edge active_edge;
160  Edge forming_edge;
161
162  std::string nodemap_to_edit, edgemap_to_edit;
163
164  static const int zoom_step = 5;
165
166  ///We need to store mapwin, to be able to ask the appropriate values for properties of new items.
167  MapWin & mapwin;
168
169  ///pointer to the parent window
170  Gtk::Window * parentwin;
171
172};
173
174#endif //GRAPH_DISPLAYER_CANVAS_H
Note: See TracBrowser for help on using the repository browser.