COIN-OR::LEMON - Graph Library

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source: glemon-0.x/graph_displayer_canvas-event.cc @ 159:7ea73c90a7f0

Last change on this file since 159:7ea73c90a7f0 was 153:d79a71382836, checked in by Akos Ladanyi, 18 years ago
Bugfixes.
Property exe set to ``*
File size: 23.6 KB

Line
1	#include "graph_displayer_canvas.h"
2	#include <cmath>
3
4
5	bool GraphDisplayerCanvas::on_expose_event(GdkEventExpose *event)
6	{
7	Gnome::Canvas::CanvasAA::on_expose_event(event);
8	//usleep(10000);
9	//rezoom();
10	return true;
11	}
12
13	void GraphDisplayerCanvas::changeEditorialTool(int newtool)
14	{
15	if(actual_tool!=newtool)
16	{
17
18	actual_handler.disconnect();
19
20	switch(actual_tool)
21	{
22	case CREATE_EDGE:
23	{
24	GdkEvent * generated=new GdkEvent();
25	generated->type=GDK_BUTTON_RELEASE;
26	generated->button.button=3;
27	createEdgeEventHandler(generated);
28	break;
29	}
30	case MAP_EDIT:
31	{
32	break;
33	}
34	default:
35	break;
36	}
37
38	active_item=NULL;
39	target_item=NULL;
40	active_edge=INVALID;
41	active_node=INVALID;
42
43
44	actual_tool=newtool;
45
46	switch(newtool)
47	{
48	case MOVE:
49	actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::moveEventHandler), false);
50	break;
51
52	case CREATE_NODE:
53	actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::createNodeEventHandler), false);
54	break;
55
56	case CREATE_EDGE:
57	actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::createEdgeEventHandler), false);
58	break;
59
60	case ERASER:
61	actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::eraserEventHandler), false);
62	break;
63
64	case MAP_EDIT:
65	grab_focus();
66	actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::mapEditEventHandler), false);
67	break;
68
69	default:
70	break;
71	}
72	}
73	}
74
75	int GraphDisplayerCanvas::getActualTool()
76	{
77	return actual_tool;
78	}
79
80	bool GraphDisplayerCanvas::moveEventHandler(GdkEvent* e)
81	{
82	static Gnome::Canvas::Text *coord_text = 0;
83	switch(e->type)
84	{
85	case GDK_BUTTON_PRESS:
86	//we mark the location of the event to be able to calculate parameters of dragging
87	window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
88
89	active_item=(get_item_at(clicked_x, clicked_y));
90	active_node=INVALID;
91	for (NodeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
92	{
93	if(nodesmap[i]==active_item)
94	{
95	active_node=i;
96	}
97	}
98	isbutton=e->button.button;
99	break;
100	case GDK_BUTTON_RELEASE:
101	if (coord_text)
102	{
103	delete coord_text;
104	coord_text = 0;
105	}
106	isbutton=0;
107	active_item=NULL;
108	active_node=INVALID;
109	break;
110	case GDK_MOTION_NOTIFY:
111	//we only have to do sg. if the mouse button is pressed AND the click was on a node that was found in the set of nodes
112	if(active_node!=INVALID)
113	{
114	(mytab.mapstorage).modified = true;
115
116	//new coordinates will be the old values,
117	//because the item will be moved to the
118	//new coordinate therefore the new movement
119	//has to be calculated from here
120
121	double new_x, new_y;
122
123	window_to_world (e->motion.x, e->motion.y, new_x, new_y);
124
125	double dx=new_x-clicked_x;
126	double dy=new_y-clicked_y;
127
128	//repositioning node and its text
129	active_item->move(dx, dy);
130	nodetextmap[active_node]->move(dx, dy);
131
132	// the new coordinates of the centre of the node
133	double coord_x = new_x - (clicked_x - (mytab.mapstorage).coords[active_node].x);
134	double coord_y = new_y - (clicked_y - (mytab.mapstorage).coords[active_node].y);
135
136	// write back the new coordinates to the coords map
137	(mytab.mapstorage).coords.set(active_node, XY(coord_x, coord_y));
138
139	clicked_x=new_x;
140	clicked_y=new_y;
141
142	// reposition the coordinates text
143	std::ostringstream ostr;
144	ostr << "(" <<
145	(mytab.mapstorage).coords[active_node].x << ", " <<
146	(mytab.mapstorage).coords[active_node].y << ")";
147	double radius =
148	(nodesmap[active_node]->property_x2().get_value() -
149	nodesmap[active_node]->property_x1().get_value()) / 2.0;
150	if (coord_text)
151	{
152	coord_text->property_text().set_value(ostr.str());
153	coord_text->property_x().set_value((mytab.mapstorage).coords[active_node].x +
154	radius);
155	coord_text->property_y().set_value((mytab.mapstorage).coords[active_node].y -
156	radius);
157	}
158	else
159	{
160	coord_text = new Gnome::Canvas::Text(
161	displayed_graph,
162	(mytab.mapstorage).coords[active_node].x + radius,
163	(mytab.mapstorage).coords[active_node].y - radius,
164	ostr.str());
165	coord_text->property_fill_color().set_value("black");
166	coord_text->property_anchor().set_value(Gtk::ANCHOR_SOUTH_WEST);
167	}
168
169	//all the edges connected to the moved point has to be redrawn
170	for(OutEdgeIt ei((mytab.mapstorage).graph,active_node);ei!=INVALID;++ei)
171	{
172	XY arrow_pos;
173
174	if (mytab.mapstorage.graph.source(ei) == mytab.mapstorage.graph.target(ei))
175	{
176	arrow_pos = mytab.mapstorage.arrow_pos[ei] + XY(dx, dy);
177	}
178	else
179	{
180	XY moved_node_1(coord_x - dx, coord_y - dy);
181	XY moved_node_2(coord_x, coord_y);
182	Node target = mytab.mapstorage.graph.target(ei);
183	XY fix_node(mytab.mapstorage.coords[target].x,
184	mytab.mapstorage.coords[target].y);
185	XY old_arrow_pos(mytab.mapstorage.arrow_pos[ei]);
186
187	arrow_pos = calcArrowPos(moved_node_1, moved_node_2, fix_node, old_arrow_pos, isbutton);
188	}
189
190	mytab.mapstorage.arrow_pos.set(ei, arrow_pos);
191	edgesmap[ei]->draw();
192
193	//reposition of edgetext
194	XY text_pos=mytab.mapstorage.arrow_pos[ei];
195	text_pos+=(XY(10,10));
196	edgetextmap[ei]->property_x().set_value(text_pos.x);
197	edgetextmap[ei]->property_y().set_value(text_pos.y);
198	}
199
200	for(InEdgeIt ei((mytab.mapstorage).graph,active_node);ei!=INVALID;++ei)
201	{
202	if (mytab.mapstorage.graph.source(ei) != mytab.mapstorage.graph.target(ei))
203	{
204	XY moved_node_1(coord_x - dx, coord_y - dy);
205	XY moved_node_2(coord_x, coord_y);
206	Node source = mytab.mapstorage.graph.source(ei);
207	XY fix_node(mytab.mapstorage.coords[source].x,
208	mytab.mapstorage.coords[source].y);
209	XY old_arrow_pos(mytab.mapstorage.arrow_pos[ei]);
210
211	XY arrow_pos;
212	arrow_pos = calcArrowPos(moved_node_1, moved_node_2, fix_node, old_arrow_pos, isbutton);
213
214	mytab.mapstorage.arrow_pos.set(ei, arrow_pos);
215	edgesmap[ei]->draw();
216
217	//reposition of edgetext
218	XY text_pos=mytab.mapstorage.arrow_pos[ei];
219	text_pos+=(XY(10,10));
220	edgetextmap[ei]->property_x().set_value(text_pos.x);
221	edgetextmap[ei]->property_y().set_value(text_pos.y);
222	}
223	}
224	}
225	default: break;
226	}
227
228	return false;
229	}
230
231	XY GraphDisplayerCanvas::calcArrowPos(XY moved_node_1, XY moved_node_2, XY fix_node, XY old_arrow_pos, int move_code)
232	{
233	switch(move_code)
234	{
235	case 1:
236	return XY((moved_node_2.x + fix_node.x) / 2.0, (moved_node_2.y + fix_node.y) / 2.0);
237	break;
238	case 2:
239	return old_arrow_pos;
240	break;
241	case 3:
242	{
243	//////////////////////////////////////////////////////////////////////////////////////////////////////
244	/////////// keeps shape-with scalar multiplication - version 2.
245	//////////////////////////////////////////////////////////////////////////////////////////////////////
246
247	//old vector from one to the other node - a
248	XY a_v(moved_node_1.x-fix_node.x,moved_node_1.y-fix_node.y);
249	//new vector from one to the other node - b
250	XY b_v(moved_node_2.x-fix_node.x,moved_node_2.y-fix_node.y);
251
252	double absa=sqrt(a_v.normSquare());
253	double absb=sqrt(b_v.normSquare());
254
255	if ((absa == 0.0) \|\| (absb == 0.0))
256	{
257	return old_arrow_pos;
258	}
259	else
260	{
261	//old vector from one node to the breakpoint - c
262	XY c_v(old_arrow_pos.x-fix_node.x,old_arrow_pos.y-fix_node.y);
263
264	//unit vector with the same direction to a_v
265	XY a_v_u(a_v.x/absa,a_v.y/absa);
266
267	//normal vector of unit vector with the same direction to a_v
268	XY a_v_u_n(((-1)*a_v_u.y),a_v_u.x);
269
270	//unit vector with the same direction to b_v
271	XY b_v_u(b_v.x/absb,b_v.y/absb);
272
273	//normal vector of unit vector with the same direction to b_v
274	XY b_v_u_n(((-1)*b_v_u.y),b_v_u.x);
275
276	//vector c in a_v_u and a_v_u_n co-ordinate system
277	XY c_a(c_va_v_u,c_va_v_u_n);
278
279	//new vector from one node to the breakpoint - d - we have to calculate this one
280	XY d_v=absb/absa(c_a.xb_v_u+c_a.y*b_v_u_n);
281
282	return XY(d_v.x+fix_node.x,d_v.y+fix_node.y);
283	}
284	break;
285	}
286	default:
287	break;
288	}
289	}
290
291
292	bool GraphDisplayerCanvas::createNodeEventHandler(GdkEvent* e)
293	{
294	switch(e->type)
295	{
296	//move the new node
297	case GDK_MOTION_NOTIFY:
298	{
299	GdkEvent * generated=new GdkEvent();
300	generated->motion.x=e->motion.x;
301	generated->motion.y=e->motion.y;
302	generated->type=GDK_MOTION_NOTIFY;
303	moveEventHandler(generated);
304	break;
305	}
306
307	case GDK_BUTTON_RELEASE:
308	(mytab.mapstorage).modified = true;
309
310	isbutton=1;
311
312	active_node=(mytab.mapstorage).graph.addNode();
313
314	//initiating values corresponding to new node in maps
315
316	window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
317
318	// update coordinates
319	(mytab.mapstorage).coords.set(active_node, XY(clicked_x, clicked_y));
320
321	// update all other maps
322	for (std::map<std::string, Graph::NodeMap<double>*>::const_iterator it =
323	(mytab.mapstorage).nodemap_storage.begin(); it !=
324	(mytab.mapstorage).nodemap_storage.end(); ++it)
325	{
326	if ((it->first != "coordinates_x") &&
327	(it->first != "coordinates_y"))
328	{
329	(*(it->second))[active_node] =
330	(mytab.mapstorage).nodemap_default[it->first];
331	}
332	}
333	// increment the id map's default value
334	(mytab.mapstorage).nodemap_default["label"] += 1.0;
335
336	nodesmap[active_node]=new Gnome::Canvas::Ellipse(displayed_graph,
337	clicked_x-20, clicked_y-20, clicked_x+20, clicked_y+20);
338	active_item=(Gnome::Canvas::Item *)(nodesmap[active_node]);
339	*(nodesmap[active_node]) <<
340	Gnome::Canvas::Properties::fill_color("blue");
341	*(nodesmap[active_node]) <<
342	Gnome::Canvas::Properties::outline_color("black");
343	active_item->raise_to_top();
344
345	(nodesmap[active_node])->show();
346
347	nodetextmap[active_node]=new Gnome::Canvas::Text(displayed_graph,
348	clicked_x+node_property_defaults[N_RADIUS]+5,
349	clicked_y+node_property_defaults[N_RADIUS]+5, "");
350	nodetextmap[active_node]->property_fill_color().set_value("darkblue");
351	nodetextmap[active_node]->raise_to_top();
352
353	// mapwin.updateNode(active_node);
354	propertyUpdate(active_node);
355
356	isbutton=0;
357	target_item=NULL;
358	active_item=NULL;
359	active_node=INVALID;
360	break;
361	default:
362	break;
363	}
364	return false;
365	}
366
367	bool GraphDisplayerCanvas::createEdgeEventHandler(GdkEvent* e)
368	{
369	switch(e->type)
370	{
371	case GDK_BUTTON_PRESS:
372	//in edge creation right button has special meaning
373	if(e->button.button!=3)
374	{
375	//there is not yet selected node
376	if(active_node==INVALID)
377	{
378	//we mark the location of the event to be able to calculate parameters of dragging
379
380	window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
381
382	active_item=(get_item_at(clicked_x, clicked_y));
383	active_node=INVALID;
384	for (NodeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
385	{
386	if(nodesmap[i]==active_item)
387	{
388	active_node=i;
389	}
390	}
391	//the clicked item is really a node
392	if(active_node!=INVALID)
393	{
394	*(nodesmap[active_node]) << Gnome::Canvas::Properties::fill_color("red");
395	isbutton=1;
396	}
397	//clicked item was not a node. It could be e.g. edge.
398	else
399	{
400	active_item=NULL;
401	}
402	}
403	//we only have to do sg. if the mouse button
404	// is pressed already once AND the click was
405	// on a node that was found in the set of
406	//nodes, and now we only search for the second
407	//node
408	else
409	{
410	window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
411	target_item=(get_item_at(clicked_x, clicked_y));
412	Node target_node=INVALID;
413	for (NodeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
414	{
415	if(nodesmap[i]==target_item)
416	{
417	target_node=i;
418	}
419	}
420	//the clicked item is a node, the edge can be drawn
421	if(target_node!=INVALID)
422	{
423	(mytab.mapstorage).modified = true;
424
425	*(nodesmap[target_node]) <<
426	Gnome::Canvas::Properties::fill_color("red");
427
428	//creating new edge
429	active_edge=(mytab.mapstorage).graph.addEdge(active_node,
430	target_node);
431
432	// update maps
433	for (std::map<std::string,
434	Graph::EdgeMap<double>*>::const_iterator it =
435	(mytab.mapstorage).edgemap_storage.begin(); it !=
436	(mytab.mapstorage).edgemap_storage.end(); ++it)
437	{
438	(*(it->second))[active_edge] =
439	(mytab.mapstorage).edgemap_default[it->first];
440	}
441	// increment the id map's default value
442	(mytab.mapstorage).edgemap_default["label"] += 1.0;
443
444	if(target_node!=active_node)
445	{
446	// set the coordinates of the arrow on the new edge
447	MapStorage& ms = mytab.mapstorage;
448	ms.arrow_pos.set(active_edge,
449	(ms.coords[ms.graph.source(active_edge)] +
450	ms.coords[ms.graph.target(active_edge)])/ 2.0);
451
452	//drawing new edge
453	edgesmap[active_edge]=new BrokenEdge(displayed_graph, active_edge,
454	*this);
455	}
456	else
457	{
458	// set the coordinates of the arrow on the new edge
459	MapStorage& ms = mytab.mapstorage;
460	ms.arrow_pos.set(active_edge,
461	(ms.coords[ms.graph.source(active_edge)] +
462	XY(0.0, 80.0)));
463
464	//drawing new edge
465	edgesmap[active_edge]=new LoopEdge(displayed_graph, active_edge,
466	*this);
467	}
468
469	//initializing edge-text as well, to empty string
470	XY text_pos=mytab.mapstorage.arrow_pos[active_edge];
471	text_pos+=(XY(10,10));
472
473	edgetextmap[active_edge]=new Gnome::Canvas::Text(displayed_graph,
474	text_pos.x, text_pos.y, "");
475	edgetextmap[active_edge]->property_fill_color().set_value(
476	"darkgreen");
477	edgetextmap[active_edge]->raise_to_top();
478
479	propertyUpdate(active_edge);
480	}
481	//clicked item was not a node. it could be an e.g. edge. we do not
482	//deal with it furthermore.
483	else
484	{
485	target_item=NULL;
486	}
487	}
488	}
489	break;
490	case GDK_BUTTON_RELEASE:
491	isbutton=0;
492	//we clear settings in two cases
493	//1: the edge is ready (target_item has valid value)
494	//2: the edge creation is cancelled with right button
495	if((target_item)\|\|(e->button.button==3))
496	{
497	if(active_item)
498	{
499	*active_item << Gnome::Canvas::Properties::fill_color("blue");
500	active_item=NULL;
501	}
502	if(target_item)
503	{
504	*target_item << Gnome::Canvas::Properties::fill_color("blue");
505	target_item=NULL;
506	}
507	active_node=INVALID;
508	active_edge=INVALID;
509	}
510	break;
511	default:
512	break;
513	}
514	return false;
515	}
516
517	bool GraphDisplayerCanvas::eraserEventHandler(GdkEvent* e)
518	{
519	switch(e->type)
520	{
521	case GDK_BUTTON_PRESS:
522	//finding the clicked items
523	window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
524	active_item=(get_item_at(clicked_x, clicked_y));
525	active_node=INVALID;
526	active_edge=INVALID;
527	//was it a node?
528	for (NodeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
529	{
530	if(nodesmap[i]==active_item)
531	{
532	active_node=i;
533	}
534	}
535	//or was it an edge?
536	if(active_node==INVALID)
537	{
538	for (EdgeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
539	{
540	if(edgesmap[i]->getLine()==active_item)
541	{
542	active_edge=i;
543	}
544	}
545	}
546
547	// return if the clicked object is neither an edge nor a node
548	if (active_edge == INVALID) return false;
549
550	//recolor activated item
551	if(active_item)
552	{
553	*active_item << Gnome::Canvas::Properties::fill_color("red");
554	}
555	break;
556
557	case GDK_BUTTON_RELEASE:
558	window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
559	if(active_item)
560	{
561	//the cursor was not moved since pressing it
562	if( active_item == ( get_item_at (clicked_x, clicked_y) ) )
563	{
564	//a node was found
565	if(active_node!=INVALID)
566	{
567	(mytab.mapstorage).modified = true;
568
569	std::set<Graph::Edge> edges_to_delete;
570
571	for(OutEdgeIt e((mytab.mapstorage).graph,active_node);e!=INVALID;++e)
572	{
573	edges_to_delete.insert(e);
574	}
575
576	for(InEdgeIt e((mytab.mapstorage).graph,active_node);e!=INVALID;++e)
577	{
578	edges_to_delete.insert(e);
579	}
580
581	//deleting collected edges
582	for(std::set<Graph::Edge>::iterator
583	edge_set_it=edges_to_delete.begin();
584	edge_set_it!=edges_to_delete.end();
585	++edge_set_it)
586	{
587	deleteItem(*edge_set_it);
588	}
589	deleteItem(active_node);
590	}
591	//a simple edge was chosen
592	else if (active_edge != INVALID)
593	{
594	deleteItem(active_edge);
595	}
596	}
597	//pointer was moved, deletion is cancelled
598	else
599	{
600	if(active_node!=INVALID)
601	{
602	*active_item << Gnome::Canvas::Properties::fill_color("blue");
603	}
604	else if (active_edge != INVALID)
605	{
606	*active_item << Gnome::Canvas::Properties::fill_color("green");
607	}
608	}
609	}
610	//reseting datas
611	active_item=NULL;
612	active_edge=INVALID;
613	active_node=INVALID;
614	break;
615
616	case GDK_MOTION_NOTIFY:
617	break;
618
619	default:
620	break;
621	}
622	return false;
623	}
624
625	bool GraphDisplayerCanvas::mapEditEventHandler(GdkEvent* e)
626	{
627	if(actual_tool==MAP_EDIT)
628	{
629	switch(e->type)
630	{
631	case GDK_BUTTON_PRESS:
632	{
633	//for determine, whether it was an edge
634	Edge clicked_edge=INVALID;
635	//for determine, whether it was a node
636	Node clicked_node=INVALID;
637
638	window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
639	active_item=(get_item_at(clicked_x, clicked_y));
640
641	//find the activated item between text of nodes
642	for (NodeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
643	{
644	//at the same time only one can be active
645	if(nodetextmap[i]==active_item)
646	{
647	clicked_node=i;
648	}
649	}
650
651	//if there was not, search for it between nodes
652	if(clicked_node==INVALID)
653	{
654	for (NodeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
655	{
656	//at the same time only one can be active
657	if(nodesmap[i]==active_item)
658	{
659	clicked_node=i;
660	}
661	}
662	}
663
664	if(clicked_node==INVALID)
665	{
666	//find the activated item between texts
667	for (EdgeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
668	{
669	//at the same time only one can be active
670	if(edgetextmap[i]==active_item)
671	{
672	clicked_edge=i;
673	}
674	}
675
676	//if it was not between texts, search for it between edges
677	if(clicked_edge==INVALID)
678	{
679	for (EdgeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
680	{
681	//at the same time only one can be active
682	if((edgesmap[i]->getLine())==active_item)
683	{
684	clicked_edge=i;
685	}
686	}
687	}
688	}
689
690	//if it was really a node...
691	if(clicked_node!=INVALID)
692	{
693	// the id map is not editable
694	if (nodemap_to_edit == "label") return 0;
695
696	//and there is activated map
697	if(nodetextmap[clicked_node]->property_text().get_value()!="")
698	{
699	//activate the general variable for it
700	active_node=clicked_node;
701
702	//create a dialog
703	Gtk::Dialog dialog("Edit value", true);
704	dialog.add_button(Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
705	dialog.add_button(Gtk::Stock::OK, Gtk::RESPONSE_ACCEPT);
706	Gtk::VBox* vbox = dialog.get_vbox();
707	Gtk::SpinButton spin(0.0, 4);
708	spin.set_increments(1.0, 10.0);
709	spin.set_range(-1000000.0, 1000000.0);
710	spin.set_numeric(true);
711	spin.set_value(atof(nodetextmap[active_node]->property_text().get_value().c_str()));
712	vbox->add(spin);
713	spin.show();
714	switch (dialog.run())
715	{
716	case Gtk::RESPONSE_NONE:
717	case Gtk::RESPONSE_CANCEL:
718	break;
719	case Gtk::RESPONSE_ACCEPT:
720	double new_value = spin.get_value();
721	(*(mytab.mapstorage).nodemap_storage[nodemap_to_edit])[active_node] =
722	new_value;
723	std::ostringstream ostr;
724	ostr << new_value;
725	nodetextmap[active_node]->property_text().set_value(ostr.str());
726	//mapwin.updateNode(active_node);
727	//mapwin.updateNode(Node(INVALID));
728	propertyUpdate(Node(INVALID));
729	}
730	}
731	}
732	else
733	//if it was really an edge...
734	if(clicked_edge!=INVALID)
735	{
736	// the id map is not editable
737	if (edgemap_to_edit == "label") return 0;
738
739	//and there is activated map
740	if(edgetextmap[clicked_edge]->property_text().get_value()!="")
741	{
742	//activate the general variable for it
743	active_edge=clicked_edge;
744
745	//create a dialog
746	Gtk::Dialog dialog("Edit value", true);
747	dialog.add_button(Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
748	dialog.add_button(Gtk::Stock::OK, Gtk::RESPONSE_ACCEPT);
749	Gtk::VBox* vbox = dialog.get_vbox();
750	Gtk::SpinButton spin(0.0, 4);
751	spin.set_increments(1.0, 10.0);
752	spin.set_range(-1000000.0, 1000000.0);
753	spin.set_numeric(true);
754	spin.set_value(atof(edgetextmap[active_edge]->property_text().get_value().c_str()));
755	vbox->add(spin);
756	spin.show();
757	switch (dialog.run())
758	{
759	case Gtk::RESPONSE_NONE:
760	case Gtk::RESPONSE_CANCEL:
761	break;
762	case Gtk::RESPONSE_ACCEPT:
763	double new_value = spin.get_value();
764	(*(mytab.mapstorage).edgemap_storage[edgemap_to_edit])[active_edge] =
765	new_value;
766	std::ostringstream ostr;
767	ostr << new_value;
768	edgetextmap[active_edge]->property_text().set_value(
769	ostr.str());
770	//mapwin.updateEdge(active_edge);
771	// mapwin.updateEdge(Edge(INVALID));
772	propertyUpdate(Edge(INVALID));
773	}
774	}
775	}
776	break;
777	}
778	default:
779	break;
780	}
781	}
782	return false;
783	}
784
785	void GraphDisplayerCanvas::deleteItem(Node node_to_delete)
786	{
787	delete(nodetextmap[node_to_delete]);
788	delete(nodesmap[node_to_delete]);
789	(mytab.mapstorage).graph.erase(node_to_delete);
790	}
791
792	void GraphDisplayerCanvas::deleteItem(Edge edge_to_delete)
793	{
794	delete(edgetextmap[edge_to_delete]);
795	delete(edgesmap[edge_to_delete]);
796	(mytab.mapstorage).graph.erase(edge_to_delete);
797	}
798
799	void GraphDisplayerCanvas::textReposition(XY new_place)
800	{
801	new_place+=(XY(10,10));
802	edgetextmap[forming_edge]->property_x().set_value(new_place.x);
803	edgetextmap[forming_edge]->property_y().set_value(new_place.y);
804	}
805
806	void GraphDisplayerCanvas::toggleEdgeActivity(EdgeBase* active_bre, bool on)
807	{
808	if(on)
809	{
810	if(forming_edge!=INVALID)
811	{
812	std::cerr << "ERROR!!!! Valid edge found!" << std::endl;
813	}
814	else
815	{
816	for (EdgeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
817	{
818	if(edgesmap[i]==active_bre)
819	{
820	forming_edge=i;
821	}
822	}
823	}
824	}
825	else
826	{
827	if(forming_edge!=INVALID)
828	{
829	forming_edge=INVALID;
830	}
831	else
832	{
833	std::cerr << "ERROR!!!! Invalid edge found!" << std::endl;
834	}
835	}
836	}

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