1 | /* -*- C++ -*- |
---|
2 | * |
---|
3 | * This file is a part of LEMON, a generic C++ optimization library |
---|
4 | * |
---|
5 | * Copyright (C) 2003-2006 |
---|
6 | * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
---|
7 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
---|
8 | * |
---|
9 | * Permission to use, modify and distribute this software is granted |
---|
10 | * provided that this copyright notice appears in all copies. For |
---|
11 | * precise terms see the accompanying LICENSE file. |
---|
12 | * |
---|
13 | * This software is provided "AS IS" with no warranty of any kind, |
---|
14 | * express or implied, and with no claim as to its suitability for any |
---|
15 | * purpose. |
---|
16 | * |
---|
17 | */ |
---|
18 | |
---|
19 | #include "graph_displayer_canvas.h" |
---|
20 | #include <lemon/random.h> |
---|
21 | #include <cmath> |
---|
22 | |
---|
23 | GraphDisplayerCanvas::GraphDisplayerCanvas(NoteBookTab & mainw) : |
---|
24 | nodesmap(mainw.mapstorage.graph), edgesmap(mainw.mapstorage.graph), edgetextmap(mainw.mapstorage.graph), |
---|
25 | nodetextmap(mainw.mapstorage.graph), displayed_graph(*(root()), 0, 0), |
---|
26 | isbutton(0), active_item(NULL), target_item(NULL), nodemap_to_edit(""), |
---|
27 | edgemap_to_edit(""), autoscale(true), zoomtrack(false), radius_size(20), edge_width(10), |
---|
28 | was_redesigned(false), is_drawn(false), mytab(mainw), |
---|
29 | background_set(false) |
---|
30 | { |
---|
31 | //add mouse scroll event handler - it won't be changed, it handles zoom |
---|
32 | signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::scrollEventHandler), false); |
---|
33 | |
---|
34 | //base event handler is move tool |
---|
35 | actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::moveEventHandler), false); |
---|
36 | actual_tool=MOVE; |
---|
37 | |
---|
38 | |
---|
39 | active_node=INVALID; |
---|
40 | active_edge=INVALID; |
---|
41 | forming_edge=INVALID; |
---|
42 | |
---|
43 | setBackground(); |
---|
44 | } |
---|
45 | |
---|
46 | void GraphDisplayerCanvas::setBackground() |
---|
47 | { |
---|
48 | if (background_set) |
---|
49 | { |
---|
50 | delete background; |
---|
51 | } |
---|
52 | if (mytab.mapstorage.isBackgroundSet()) |
---|
53 | { |
---|
54 | background_set = true; |
---|
55 | refBackground = Gdk::Pixbuf::create_from_file( |
---|
56 | mytab.mapstorage.getBackgroundFilename()); |
---|
57 | background = new Gnome::Canvas::Pixbuf( |
---|
58 | *(root()), |
---|
59 | 0.0 - refBackground->get_width() / 2.0, |
---|
60 | 0.0 - refBackground->get_height() / 2.0, |
---|
61 | refBackground); |
---|
62 | background->lower_to_bottom(); |
---|
63 | } |
---|
64 | else |
---|
65 | { |
---|
66 | background_set = false; |
---|
67 | } |
---|
68 | } |
---|
69 | |
---|
70 | GraphDisplayerCanvas::~GraphDisplayerCanvas() |
---|
71 | { |
---|
72 | for (NodeIt n((mytab.mapstorage).graph); n != INVALID; ++n) |
---|
73 | { |
---|
74 | delete nodesmap[n]; |
---|
75 | // delete nodetextmap[n]; |
---|
76 | } |
---|
77 | |
---|
78 | for (EdgeIt e((mytab.mapstorage).graph); e != INVALID; ++e) |
---|
79 | { |
---|
80 | delete edgesmap[e]; |
---|
81 | // delete edgetextmap[e]; |
---|
82 | } |
---|
83 | } |
---|
84 | |
---|
85 | void GraphDisplayerCanvas::propertyChange(bool itisedge, int prop) |
---|
86 | { |
---|
87 | if(itisedge) |
---|
88 | { |
---|
89 | propertyUpdate(Edge(INVALID), prop); |
---|
90 | } |
---|
91 | else |
---|
92 | { |
---|
93 | propertyUpdate(Node(INVALID), prop); |
---|
94 | } |
---|
95 | } |
---|
96 | |
---|
97 | void GraphDisplayerCanvas::propertyUpdate(Edge edge) |
---|
98 | { |
---|
99 | for(int i=0;i<EDGE_PROPERTY_NUM;i++) |
---|
100 | { |
---|
101 | propertyUpdate(edge, i); |
---|
102 | } |
---|
103 | } |
---|
104 | |
---|
105 | void GraphDisplayerCanvas::propertyUpdate(Node node) |
---|
106 | { |
---|
107 | for(int i=0;i<NODE_PROPERTY_NUM;i++) |
---|
108 | { |
---|
109 | propertyUpdate(node, i); |
---|
110 | } |
---|
111 | } |
---|
112 | |
---|
113 | void GraphDisplayerCanvas::propertyUpdate(Node node, int prop) |
---|
114 | { |
---|
115 | std::string mapname=mytab.getActiveNodeMap(prop); |
---|
116 | |
---|
117 | if(is_drawn) |
---|
118 | { |
---|
119 | if(mapname!="") |
---|
120 | { |
---|
121 | if( ( ((mytab.mapstorage).nodemap_storage).find(mapname) != ((mytab.mapstorage).nodemap_storage).end() ) ) |
---|
122 | { |
---|
123 | switch(prop) |
---|
124 | { |
---|
125 | case N_RADIUS: |
---|
126 | changeNodeRadius(mapname, node); |
---|
127 | break; |
---|
128 | case N_COLOR: |
---|
129 | changeNodeColor(mapname, node); |
---|
130 | break; |
---|
131 | case N_TEXT: |
---|
132 | changeNodeText(mapname, node); |
---|
133 | break; |
---|
134 | default: |
---|
135 | std::cerr<<"Error\n"; |
---|
136 | } |
---|
137 | } |
---|
138 | } |
---|
139 | else //mapname=="" |
---|
140 | { |
---|
141 | Node node=INVALID; |
---|
142 | switch(prop) |
---|
143 | { |
---|
144 | case N_RADIUS: |
---|
145 | resetNodeRadius(node); |
---|
146 | break; |
---|
147 | case N_COLOR: |
---|
148 | resetNodeColor(node); |
---|
149 | break; |
---|
150 | case N_TEXT: |
---|
151 | resetNodeText(node); |
---|
152 | break; |
---|
153 | default: |
---|
154 | std::cerr<<"Error\n"; |
---|
155 | } |
---|
156 | } |
---|
157 | } |
---|
158 | } |
---|
159 | |
---|
160 | void GraphDisplayerCanvas::propertyUpdate(Edge edge, int prop) |
---|
161 | { |
---|
162 | std::string mapname=mytab.getActiveEdgeMap(prop); |
---|
163 | |
---|
164 | if(is_drawn) |
---|
165 | { |
---|
166 | if(mapname!="") |
---|
167 | { |
---|
168 | if( ( ((mytab.mapstorage).edgemap_storage).find(mapname) != ((mytab.mapstorage).edgemap_storage).end() ) ) |
---|
169 | { |
---|
170 | switch(prop) |
---|
171 | { |
---|
172 | case E_WIDTH: |
---|
173 | changeEdgeWidth(mapname, edge); |
---|
174 | break; |
---|
175 | case E_COLOR: |
---|
176 | changeEdgeColor(mapname, edge); |
---|
177 | break; |
---|
178 | case E_TEXT: |
---|
179 | changeEdgeText(mapname, edge); |
---|
180 | break; |
---|
181 | default: |
---|
182 | std::cerr<<"Error\n"; |
---|
183 | } |
---|
184 | } |
---|
185 | } |
---|
186 | else //mapname=="" |
---|
187 | { |
---|
188 | switch(prop) |
---|
189 | { |
---|
190 | case E_WIDTH: |
---|
191 | resetEdgeWidth(edge); |
---|
192 | break; |
---|
193 | case E_COLOR: |
---|
194 | resetEdgeColor(edge); |
---|
195 | break; |
---|
196 | case E_TEXT: |
---|
197 | resetEdgeText(edge); |
---|
198 | break; |
---|
199 | default: |
---|
200 | std::cerr<<"Error\n"; |
---|
201 | } |
---|
202 | } |
---|
203 | } |
---|
204 | } |
---|
205 | |
---|
206 | void GraphDisplayerCanvas::drawGraph() |
---|
207 | { |
---|
208 | //first edges are drawn, to hide joining with nodes later |
---|
209 | |
---|
210 | for (EdgeIt i((mytab.mapstorage).graph); i!=INVALID; ++i) |
---|
211 | { |
---|
212 | if (mytab.mapstorage.graph.source(i) == mytab.mapstorage.graph.target(i)) |
---|
213 | { |
---|
214 | edgesmap[i]=new LoopEdge(displayed_graph, i, *this); |
---|
215 | } |
---|
216 | else |
---|
217 | { |
---|
218 | edgesmap[i]=new BrokenEdge(displayed_graph, i, *this); |
---|
219 | } |
---|
220 | //initializing edge-text as well, to empty string |
---|
221 | |
---|
222 | XY text_pos=mytab.mapstorage.arrow_pos[i]; |
---|
223 | text_pos+=(XY(10,10)); |
---|
224 | |
---|
225 | // edgetextmap[i]=new Gnome::Canvas::Text(displayed_graph, text_pos.x, text_pos.y, ""); |
---|
226 | // edgetextmap[i]->property_fill_color().set_value("darkgreen"); |
---|
227 | // edgetextmap[i]->signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::mapEditEventHandler), false); |
---|
228 | // edgetextmap[i]->raise_to_top(); |
---|
229 | } |
---|
230 | |
---|
231 | //afterwards nodes come to be drawn |
---|
232 | |
---|
233 | for (NodeIt i((mytab.mapstorage).graph); i!=INVALID; ++i) |
---|
234 | { |
---|
235 | //drawing bule nodes, with black line around them |
---|
236 | |
---|
237 | nodesmap[i]=new Gnome::Canvas::Ellipse( |
---|
238 | displayed_graph, |
---|
239 | (mytab.mapstorage).coords[i].x-20, |
---|
240 | (mytab.mapstorage).coords[i].y-20, |
---|
241 | (mytab.mapstorage).coords[i].x+20, |
---|
242 | (mytab.mapstorage).coords[i].y+20); |
---|
243 | *(nodesmap[i]) << Gnome::Canvas::Properties::fill_color("blue"); |
---|
244 | *(nodesmap[i]) << Gnome::Canvas::Properties::outline_color("black"); |
---|
245 | nodesmap[i]->raise_to_top(); |
---|
246 | |
---|
247 | //initializing edge-text as well, to empty string |
---|
248 | |
---|
249 | XY text_pos( |
---|
250 | ((mytab.mapstorage).coords[i].x+node_property_defaults[N_RADIUS]+5), |
---|
251 | ((mytab.mapstorage).coords[i].y+node_property_defaults[N_RADIUS]+5)); |
---|
252 | |
---|
253 | // nodetextmap[i]=new Gnome::Canvas::Text(displayed_graph, |
---|
254 | // text_pos.x, text_pos.y, ""); |
---|
255 | // nodetextmap[i]->property_fill_color().set_value("darkblue"); |
---|
256 | // nodetextmap[i]->signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::mapEditEventHandler), false); |
---|
257 | // nodetextmap[i]->raise_to_top(); |
---|
258 | } |
---|
259 | |
---|
260 | is_drawn=true; |
---|
261 | |
---|
262 | //upon drawing graph |
---|
263 | //properties have to |
---|
264 | //be set in as well |
---|
265 | for(int i=0;i<NODE_PROPERTY_NUM;i++) |
---|
266 | { |
---|
267 | propertyUpdate(Node(INVALID), i); |
---|
268 | } |
---|
269 | |
---|
270 | for(int i=0;i<EDGE_PROPERTY_NUM;i++) |
---|
271 | { |
---|
272 | propertyUpdate(Edge(INVALID), i); |
---|
273 | } |
---|
274 | |
---|
275 | updateScrollRegion(); |
---|
276 | } |
---|
277 | |
---|
278 | void GraphDisplayerCanvas::clear() |
---|
279 | { |
---|
280 | active_node=INVALID; |
---|
281 | active_edge=INVALID; |
---|
282 | forming_edge=INVALID; |
---|
283 | |
---|
284 | for (NodeIt n((mytab.mapstorage).graph); n != INVALID; ++n) |
---|
285 | { |
---|
286 | delete nodesmap[n]; |
---|
287 | // delete nodetextmap[n]; |
---|
288 | } |
---|
289 | |
---|
290 | for (EdgeIt e((mytab.mapstorage).graph); e != INVALID; ++e) |
---|
291 | { |
---|
292 | delete edgesmap[e]; |
---|
293 | // delete edgetextmap[e]; |
---|
294 | } |
---|
295 | |
---|
296 | is_drawn=false; |
---|
297 | } |
---|
298 | |
---|
299 | void GraphDisplayerCanvas::setView(bool autoscale_p, bool zoomtrack_p, double width_p, double radius_p) |
---|
300 | { |
---|
301 | autoscale=autoscale_p; |
---|
302 | edge_width=width_p; |
---|
303 | radius_size=radius_p; |
---|
304 | |
---|
305 | if((!zoomtrack) && zoomtrack_p) |
---|
306 | { |
---|
307 | fixed_zoom_factor=get_pixels_per_unit(); |
---|
308 | } |
---|
309 | |
---|
310 | zoomtrack=zoomtrack_p; |
---|
311 | |
---|
312 | propertyChange(false, N_RADIUS); |
---|
313 | propertyChange(true, E_WIDTH); |
---|
314 | } |
---|
315 | |
---|
316 | void GraphDisplayerCanvas::getView(bool & autoscale_p, bool & zoomtrack_p, double& width_p, double& radius_p) |
---|
317 | { |
---|
318 | autoscale_p=autoscale; |
---|
319 | zoomtrack_p=zoomtrack; |
---|
320 | width_p=edge_width; |
---|
321 | radius_p=radius_size; |
---|
322 | } |
---|
323 | |
---|
324 | void GraphDisplayerCanvas::reDesignGraph() |
---|
325 | { |
---|
326 | double max_coord=50000; |
---|
327 | double min_dist=20; |
---|
328 | double init_vector_length=25; |
---|
329 | |
---|
330 | if(!was_redesigned) |
---|
331 | { |
---|
332 | NodeIt i((mytab.mapstorage).graph); |
---|
333 | |
---|
334 | dim2::Point<double> init(init_vector_length*rnd(), |
---|
335 | init_vector_length*rnd()); |
---|
336 | moveNode(init.x, init.y, nodesmap[i], i); |
---|
337 | was_redesigned=true; |
---|
338 | } |
---|
339 | |
---|
340 | double attraction; |
---|
341 | double propulsation; |
---|
342 | int iterations; |
---|
343 | |
---|
344 | (mytab.mapstorage).get_design_data(attraction, propulsation, iterations); |
---|
345 | |
---|
346 | //iteration counter |
---|
347 | for(int l=0;l<iterations;l++) |
---|
348 | { |
---|
349 | Graph::NodeMap<double> x(mytab.mapstorage.graph); |
---|
350 | Graph::NodeMap<double> y(mytab.mapstorage.graph); |
---|
351 | XYMap<Graph::NodeMap<double> > actual_forces; |
---|
352 | actual_forces.setXMap(x); |
---|
353 | actual_forces.setYMap(y); |
---|
354 | |
---|
355 | //count actual force for each nodes |
---|
356 | for (NodeIt i((mytab.mapstorage).graph); i!=INVALID; ++i) |
---|
357 | { |
---|
358 | //propulsation of nodes |
---|
359 | for (NodeIt j((mytab.mapstorage).graph); j!=INVALID; ++j) |
---|
360 | { |
---|
361 | if(i!=j) |
---|
362 | { |
---|
363 | lemon::dim2::Point<double> delta = |
---|
364 | ((mytab.mapstorage).coords[i]- |
---|
365 | (mytab.mapstorage).coords[j]); |
---|
366 | |
---|
367 | const double length_sqr=std::max(delta.normSquare(),min_dist); |
---|
368 | |
---|
369 | //normalize vector |
---|
370 | delta/=sqrt(length_sqr); |
---|
371 | |
---|
372 | //calculating propulsation strength |
---|
373 | //greater distance menas smaller propulsation strength |
---|
374 | delta*=propulsation/length_sqr; |
---|
375 | |
---|
376 | actual_forces.set(i,(actual_forces[i]+delta)); |
---|
377 | } |
---|
378 | } |
---|
379 | //attraction of nodes, to which actual node is bound |
---|
380 | for(OutEdgeIt ei((mytab.mapstorage).graph,i);ei!=INVALID;++ei) |
---|
381 | { |
---|
382 | lemon::dim2::Point<double> delta = |
---|
383 | ((mytab.mapstorage).coords[i]- |
---|
384 | (mytab.mapstorage).coords[mytab.mapstorage. |
---|
385 | graph.target(ei)]); |
---|
386 | |
---|
387 | //calculating attraction strength |
---|
388 | //greater distance means greater strength |
---|
389 | delta*=attraction; |
---|
390 | |
---|
391 | actual_forces.set(i,actual_forces[i]-delta); |
---|
392 | } |
---|
393 | for(InEdgeIt ei((mytab.mapstorage).graph,i);ei!=INVALID;++ei) |
---|
394 | { |
---|
395 | lemon::dim2::Point<double> delta = |
---|
396 | ((mytab.mapstorage).coords[i]- |
---|
397 | (mytab.mapstorage).coords[mytab.mapstorage. |
---|
398 | graph.source(ei)]); |
---|
399 | |
---|
400 | //calculating attraction strength |
---|
401 | //greater distance means greater strength |
---|
402 | delta*=attraction; |
---|
403 | |
---|
404 | actual_forces.set(i,actual_forces[i]-delta); |
---|
405 | } |
---|
406 | } |
---|
407 | for (NodeIt i((mytab.mapstorage).graph); i!=INVALID; ++i) |
---|
408 | { |
---|
409 | if(((mytab.mapstorage).coords[i].x)+actual_forces[i].x>max_coord) |
---|
410 | { |
---|
411 | actual_forces[i].x=max_coord-((mytab.mapstorage).coords[i].x); |
---|
412 | std::cout << "Correction! " << (((mytab.mapstorage).coords[i].x)+actual_forces[i].x) << std::endl; |
---|
413 | } |
---|
414 | else if(((mytab.mapstorage).coords[i].x)+actual_forces[i].x<(0-max_coord)) |
---|
415 | { |
---|
416 | actual_forces[i].x=0-max_coord-((mytab.mapstorage).coords[i].x); |
---|
417 | std::cout << "Correction! " << (((mytab.mapstorage).coords[i].x)+actual_forces[i].x) << std::endl; |
---|
418 | } |
---|
419 | if(((mytab.mapstorage).coords[i].y)+actual_forces[i].y>max_coord) |
---|
420 | { |
---|
421 | actual_forces[i].y=max_coord-((mytab.mapstorage).coords[i].y); |
---|
422 | std::cout << "Correction! " << (((mytab.mapstorage).coords[i].y)+actual_forces[i].y) << std::endl; |
---|
423 | } |
---|
424 | else if(((mytab.mapstorage).coords[i].y)+actual_forces[i].y<(0-max_coord)) |
---|
425 | { |
---|
426 | actual_forces[i].y=0-max_coord-((mytab.mapstorage).coords[i].y); |
---|
427 | std::cout << "Correction! " << (((mytab.mapstorage).coords[i].y)+actual_forces[i].y) << std::endl; |
---|
428 | } |
---|
429 | moveNode(actual_forces[i].x, actual_forces[i].y, nodesmap[i], i); |
---|
430 | } |
---|
431 | } |
---|
432 | } |
---|
433 | |
---|