COIN-OR::LEMON - Graph Library

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source: glemon-0.x/graph_displayer_canvas-event.cc @ 151:72f1c33f89d4

Last change on this file since 151:72f1c33f89d4 was 151:72f1c33f89d4, checked in by Akos Ladanyi, 19 years ago
LoopEdge? improvements.
Property exe set to ``*
File size: 23.2 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 moved_node_1(coord_x - dx, coord_y - dy);
173	XY moved_node_2(coord_x, coord_y);
174	Node target = mytab.mapstorage.graph.target(ei);
175	XY fix_node(mytab.mapstorage.coords[target].x,
176	mytab.mapstorage.coords[target].y);
177	XY old_arrow_pos(mytab.mapstorage.arrow_pos[ei]);
178
179	XY arrow_pos;
180	arrow_pos = calcArrowPos(moved_node_1, moved_node_2, fix_node, old_arrow_pos, isbutton);
181
182	mytab.mapstorage.arrow_pos.set(ei, arrow_pos);
183	edgesmap[ei]->draw();
184
185	//reposition of edgetext
186	XY text_pos=mytab.mapstorage.arrow_pos[ei];
187	text_pos+=(XY(10,10));
188	edgetextmap[ei]->property_x().set_value(text_pos.x);
189	edgetextmap[ei]->property_y().set_value(text_pos.y);
190	}
191
192	for(InEdgeIt ei((mytab.mapstorage).graph,active_node);ei!=INVALID;++ei)
193	{
194	XY moved_node_1(coord_x - dx, coord_y - dy);
195	XY moved_node_2(coord_x, coord_y);
196	Node source = mytab.mapstorage.graph.source(ei);
197	XY fix_node(mytab.mapstorage.coords[source].x,
198	mytab.mapstorage.coords[source].y);
199	XY old_arrow_pos(mytab.mapstorage.arrow_pos[ei]);
200
201	XY arrow_pos;
202	arrow_pos = calcArrowPos(moved_node_1, moved_node_2, fix_node, old_arrow_pos, isbutton);
203
204	mytab.mapstorage.arrow_pos.set(ei, arrow_pos);
205	edgesmap[ei]->draw();
206
207	//reposition of edgetext
208	XY text_pos=mytab.mapstorage.arrow_pos[ei];
209	text_pos+=(XY(10,10));
210	edgetextmap[ei]->property_x().set_value(text_pos.x);
211	edgetextmap[ei]->property_y().set_value(text_pos.y);
212	}
213	}
214	default: break;
215	}
216
217	return false;
218	}
219
220	XY GraphDisplayerCanvas::calcArrowPos(XY moved_node_1, XY moved_node_2, XY fix_node, XY old_arrow_pos, int move_code)
221	{
222	switch(move_code)
223	{
224	case 1:
225	return XY((moved_node_2.x + fix_node.x) / 2.0, (moved_node_2.y + fix_node.y) / 2.0);
226	break;
227	case 2:
228	return old_arrow_pos;
229	break;
230	case 3:
231	{
232	//////////////////////////////////////////////////////////////////////////////////////////////////////
233	/////////// keeps shape-with scalar multiplication - version 2.
234	//////////////////////////////////////////////////////////////////////////////////////////////////////
235
236	//old vector from one to the other node - a
237	XY a_v(moved_node_1.x-fix_node.x,moved_node_1.y-fix_node.y);
238	//new vector from one to the other node - b
239	XY b_v(moved_node_2.x-fix_node.x,moved_node_2.y-fix_node.y);
240
241	double absa=sqrt(a_v.normSquare());
242	double absb=sqrt(b_v.normSquare());
243
244	if ((absa == 0.0) \|\| (absb == 0.0))
245	{
246	return old_arrow_pos;
247	}
248	else
249	{
250	//old vector from one node to the breakpoint - c
251	XY c_v(old_arrow_pos.x-fix_node.x,old_arrow_pos.y-fix_node.y);
252
253	//unit vector with the same direction to a_v
254	XY a_v_u(a_v.x/absa,a_v.y/absa);
255
256	//normal vector of unit vector with the same direction to a_v
257	XY a_v_u_n(((-1)*a_v_u.y),a_v_u.x);
258
259	//unit vector with the same direction to b_v
260	XY b_v_u(b_v.x/absb,b_v.y/absb);
261
262	//normal vector of unit vector with the same direction to b_v
263	XY b_v_u_n(((-1)*b_v_u.y),b_v_u.x);
264
265	//vector c in a_v_u and a_v_u_n co-ordinate system
266	XY c_a(c_va_v_u,c_va_v_u_n);
267
268	//new vector from one node to the breakpoint - d - we have to calculate this one
269	XY d_v=absb/absa(c_a.xb_v_u+c_a.y*b_v_u_n);
270
271	return XY(d_v.x+fix_node.x,d_v.y+fix_node.y);
272	}
273	break;
274	}
275	default:
276	break;
277	}
278	}
279
280
281	bool GraphDisplayerCanvas::createNodeEventHandler(GdkEvent* e)
282	{
283	switch(e->type)
284	{
285	//move the new node
286	case GDK_MOTION_NOTIFY:
287	{
288	GdkEvent * generated=new GdkEvent();
289	generated->motion.x=e->motion.x;
290	generated->motion.y=e->motion.y;
291	generated->type=GDK_MOTION_NOTIFY;
292	moveEventHandler(generated);
293	break;
294	}
295
296	case GDK_BUTTON_RELEASE:
297	(mytab.mapstorage).modified = true;
298
299	isbutton=1;
300
301	active_node=(mytab.mapstorage).graph.addNode();
302
303	//initiating values corresponding to new node in maps
304
305	window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
306
307	// update coordinates
308	(mytab.mapstorage).coords.set(active_node, XY(clicked_x, clicked_y));
309
310	// update all other maps
311	for (std::map<std::string, Graph::NodeMap<double>*>::const_iterator it =
312	(mytab.mapstorage).nodemap_storage.begin(); it !=
313	(mytab.mapstorage).nodemap_storage.end(); ++it)
314	{
315	if ((it->first != "coordinates_x") &&
316	(it->first != "coordinates_y"))
317	{
318	(*(it->second))[active_node] =
319	(mytab.mapstorage).nodemap_default[it->first];
320	}
321	}
322	// increment the id map's default value
323	(mytab.mapstorage).nodemap_default["label"] += 1.0;
324
325	nodesmap[active_node]=new Gnome::Canvas::Ellipse(displayed_graph,
326	clicked_x-20, clicked_y-20, clicked_x+20, clicked_y+20);
327	active_item=(Gnome::Canvas::Item *)(nodesmap[active_node]);
328	*(nodesmap[active_node]) <<
329	Gnome::Canvas::Properties::fill_color("blue");
330	*(nodesmap[active_node]) <<
331	Gnome::Canvas::Properties::outline_color("black");
332	active_item->raise_to_top();
333
334	(nodesmap[active_node])->show();
335
336	nodetextmap[active_node]=new Gnome::Canvas::Text(displayed_graph,
337	clicked_x+node_property_defaults[N_RADIUS]+5,
338	clicked_y+node_property_defaults[N_RADIUS]+5, "");
339	nodetextmap[active_node]->property_fill_color().set_value("darkblue");
340	nodetextmap[active_node]->raise_to_top();
341
342	// mapwin.updateNode(active_node);
343	propertyUpdate(active_node);
344
345	isbutton=0;
346	target_item=NULL;
347	active_item=NULL;
348	active_node=INVALID;
349	break;
350	default:
351	break;
352	}
353	return false;
354	}
355
356	bool GraphDisplayerCanvas::createEdgeEventHandler(GdkEvent* e)
357	{
358	switch(e->type)
359	{
360	case GDK_BUTTON_PRESS:
361	//in edge creation right button has special meaning
362	if(e->button.button!=3)
363	{
364	//there is not yet selected node
365	if(active_node==INVALID)
366	{
367	//we mark the location of the event to be able to calculate parameters of dragging
368
369	window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
370
371	active_item=(get_item_at(clicked_x, clicked_y));
372	active_node=INVALID;
373	for (NodeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
374	{
375	if(nodesmap[i]==active_item)
376	{
377	active_node=i;
378	}
379	}
380	//the clicked item is really a node
381	if(active_node!=INVALID)
382	{
383	*(nodesmap[active_node]) << Gnome::Canvas::Properties::fill_color("red");
384	isbutton=1;
385	}
386	//clicked item was not a node. It could be e.g. edge.
387	else
388	{
389	active_item=NULL;
390	}
391	}
392	//we only have to do sg. if the mouse button
393	// is pressed already once AND the click was
394	// on a node that was found in the set of
395	//nodes, and now we only search for the second
396	//node
397	else
398	{
399	window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
400	target_item=(get_item_at(clicked_x, clicked_y));
401	Node target_node=INVALID;
402	for (NodeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
403	{
404	if(nodesmap[i]==target_item)
405	{
406	target_node=i;
407	}
408	}
409	//the clicked item is a node, the edge can be drawn
410	if(target_node!=INVALID)
411	{
412	(mytab.mapstorage).modified = true;
413
414	*(nodesmap[target_node]) <<
415	Gnome::Canvas::Properties::fill_color("red");
416
417	//creating new edge
418	active_edge=(mytab.mapstorage).graph.addEdge(active_node,
419	target_node);
420
421	// update maps
422	for (std::map<std::string,
423	Graph::EdgeMap<double>*>::const_iterator it =
424	(mytab.mapstorage).edgemap_storage.begin(); it !=
425	(mytab.mapstorage).edgemap_storage.end(); ++it)
426	{
427	(*(it->second))[active_edge] =
428	(mytab.mapstorage).edgemap_default[it->first];
429	}
430	// increment the id map's default value
431	(mytab.mapstorage).edgemap_default["label"] += 1.0;
432
433	if(target_node!=active_node)
434	{
435	// set the coordinates of the arrow on the new edge
436	MapStorage& ms = mytab.mapstorage;
437	ms.arrow_pos.set(active_edge,
438	(ms.coords[ms.graph.source(active_edge)] +
439	ms.coords[ms.graph.target(active_edge)])/ 2.0);
440
441	//drawing new edge
442	edgesmap[active_edge]=new BrokenEdge(displayed_graph, active_edge,
443	*this);
444	}
445	else
446	{
447	// set the coordinates of the arrow on the new edge
448	MapStorage& ms = mytab.mapstorage;
449	ms.arrow_pos.set(active_edge,
450	(ms.coords[ms.graph.source(active_edge)] +
451	XY(0.0, 80.0)));
452
453	//drawing new edge
454	edgesmap[active_edge]=new LoopEdge(displayed_graph, active_edge,
455	*this);
456	}
457
458	//initializing edge-text as well, to empty string
459	XY text_pos=mytab.mapstorage.arrow_pos[active_edge];
460	text_pos+=(XY(10,10));
461
462	edgetextmap[active_edge]=new Gnome::Canvas::Text(displayed_graph,
463	text_pos.x, text_pos.y, "");
464	edgetextmap[active_edge]->property_fill_color().set_value(
465	"darkgreen");
466	edgetextmap[active_edge]->raise_to_top();
467
468	propertyUpdate(active_edge);
469	}
470	//clicked item was not a node. it could be an e.g. edge. we do not
471	//deal with it furthermore.
472	else
473	{
474	target_item=NULL;
475	}
476	}
477	}
478	break;
479	case GDK_BUTTON_RELEASE:
480	isbutton=0;
481	//we clear settings in two cases
482	//1: the edge is ready (target_item has valid value)
483	//2: the edge creation is cancelled with right button
484	if((target_item)\|\|(e->button.button==3))
485	{
486	if(active_item)
487	{
488	*active_item << Gnome::Canvas::Properties::fill_color("blue");
489	active_item=NULL;
490	}
491	if(target_item)
492	{
493	*target_item << Gnome::Canvas::Properties::fill_color("blue");
494	target_item=NULL;
495	}
496	active_node=INVALID;
497	active_edge=INVALID;
498	}
499	break;
500	default:
501	break;
502	}
503	return false;
504	}
505
506	bool GraphDisplayerCanvas::eraserEventHandler(GdkEvent* e)
507	{
508	switch(e->type)
509	{
510	case GDK_BUTTON_PRESS:
511	//finding the clicked items
512	window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
513	active_item=(get_item_at(clicked_x, clicked_y));
514	active_node=INVALID;
515	active_edge=INVALID;
516	//was it a node?
517	for (NodeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
518	{
519	if(nodesmap[i]==active_item)
520	{
521	active_node=i;
522	}
523	}
524	//or was it an edge?
525	if(active_node==INVALID)
526	{
527	for (EdgeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
528	{
529	if(edgesmap[i]==active_item)
530	{
531	active_edge=i;
532	}
533	}
534	}
535
536	// return if the clicked object is neither an edge nor a node
537	if (active_edge == INVALID) return false;
538
539	//recolor activated item
540	if(active_item)
541	{
542	*active_item << Gnome::Canvas::Properties::fill_color("red");
543	}
544	break;
545
546	case GDK_BUTTON_RELEASE:
547	window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
548	if(active_item)
549	{
550	//the cursor was not moved since pressing it
551	if( active_item == ( get_item_at (clicked_x, clicked_y) ) )
552	{
553	//a node was found
554	if(active_node!=INVALID)
555	{
556	(mytab.mapstorage).modified = true;
557
558	std::set<Graph::Edge> edges_to_delete;
559
560	for(OutEdgeIt e((mytab.mapstorage).graph,active_node);e!=INVALID;++e)
561	{
562	edges_to_delete.insert(e);
563	}
564
565	for(InEdgeIt e((mytab.mapstorage).graph,active_node);e!=INVALID;++e)
566	{
567	edges_to_delete.insert(e);
568	}
569
570	//deleting collected edges
571	for(std::set<Graph::Edge>::iterator
572	edge_set_it=edges_to_delete.begin();
573	edge_set_it!=edges_to_delete.end();
574	++edge_set_it)
575	{
576	deleteItem(*edge_set_it);
577	}
578	deleteItem(active_node);
579	}
580	//a simple edge was chosen
581	else if (active_edge != INVALID)
582	{
583	deleteItem(active_edge);
584	}
585	}
586	//pointer was moved, deletion is cancelled
587	else
588	{
589	if(active_node!=INVALID)
590	{
591	*active_item << Gnome::Canvas::Properties::fill_color("blue");
592	}
593	else if (active_edge != INVALID)
594	{
595	*active_item << Gnome::Canvas::Properties::fill_color("green");
596	}
597	}
598	}
599	//reseting datas
600	active_item=NULL;
601	active_edge=INVALID;
602	active_node=INVALID;
603	break;
604
605	case GDK_MOTION_NOTIFY:
606	break;
607
608	default:
609	break;
610	}
611	return false;
612	}
613
614	bool GraphDisplayerCanvas::mapEditEventHandler(GdkEvent* e)
615	{
616	if(actual_tool==MAP_EDIT)
617	{
618	switch(e->type)
619	{
620	case GDK_BUTTON_PRESS:
621	{
622	//for determine, whether it was an edge
623	Edge clicked_edge=INVALID;
624	//for determine, whether it was a node
625	Node clicked_node=INVALID;
626
627	window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
628	active_item=(get_item_at(clicked_x, clicked_y));
629
630	//find the activated item between text of nodes
631	for (NodeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
632	{
633	//at the same time only one can be active
634	if(nodetextmap[i]==active_item)
635	{
636	clicked_node=i;
637	}
638	}
639
640	//if there was not, search for it between nodes
641	if(clicked_node==INVALID)
642	{
643	for (NodeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
644	{
645	//at the same time only one can be active
646	if(nodesmap[i]==active_item)
647	{
648	clicked_node=i;
649	}
650	}
651	}
652
653	if(clicked_node==INVALID)
654	{
655	//find the activated item between texts
656	for (EdgeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
657	{
658	//at the same time only one can be active
659	if(edgetextmap[i]==active_item)
660	{
661	clicked_edge=i;
662	}
663	}
664
665	//if it was not between texts, search for it between edges
666	if(clicked_edge==INVALID)
667	{
668	for (EdgeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
669	{
670	//at the same time only one can be active
671	if((edgesmap[i]->getLine())==active_item)
672	{
673	clicked_edge=i;
674	}
675	}
676	}
677	}
678
679	//if it was really a node...
680	if(clicked_node!=INVALID)
681	{
682	// the id map is not editable
683	if (nodemap_to_edit == "label") return 0;
684
685	//and there is activated map
686	if(nodetextmap[clicked_node]->property_text().get_value()!="")
687	{
688	//activate the general variable for it
689	active_node=clicked_node;
690
691	//create a dialog
692	Gtk::Dialog dialog("Edit value", true);
693	dialog.add_button(Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
694	dialog.add_button(Gtk::Stock::OK, Gtk::RESPONSE_ACCEPT);
695	Gtk::VBox* vbox = dialog.get_vbox();
696	Gtk::SpinButton spin(0.0, 4);
697	spin.set_increments(1.0, 10.0);
698	spin.set_range(-1000000.0, 1000000.0);
699	spin.set_numeric(true);
700	spin.set_value(atof(nodetextmap[active_node]->property_text().get_value().c_str()));
701	vbox->add(spin);
702	spin.show();
703	switch (dialog.run())
704	{
705	case Gtk::RESPONSE_NONE:
706	case Gtk::RESPONSE_CANCEL:
707	break;
708	case Gtk::RESPONSE_ACCEPT:
709	double new_value = spin.get_value();
710	(*(mytab.mapstorage).nodemap_storage[nodemap_to_edit])[active_node] =
711	new_value;
712	std::ostringstream ostr;
713	ostr << new_value;
714	nodetextmap[active_node]->property_text().set_value(ostr.str());
715	//mapwin.updateNode(active_node);
716	//mapwin.updateNode(Node(INVALID));
717	propertyUpdate(Node(INVALID));
718	}
719	}
720	}
721	else
722	//if it was really an edge...
723	if(clicked_edge!=INVALID)
724	{
725	// the id map is not editable
726	if (edgemap_to_edit == "label") return 0;
727
728	//and there is activated map
729	if(edgetextmap[clicked_edge]->property_text().get_value()!="")
730	{
731	//activate the general variable for it
732	active_edge=clicked_edge;
733
734	//create a dialog
735	Gtk::Dialog dialog("Edit value", true);
736	dialog.add_button(Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
737	dialog.add_button(Gtk::Stock::OK, Gtk::RESPONSE_ACCEPT);
738	Gtk::VBox* vbox = dialog.get_vbox();
739	Gtk::SpinButton spin(0.0, 4);
740	spin.set_increments(1.0, 10.0);
741	spin.set_range(-1000000.0, 1000000.0);
742	spin.set_numeric(true);
743	spin.set_value(atof(edgetextmap[active_edge]->property_text().get_value().c_str()));
744	vbox->add(spin);
745	spin.show();
746	switch (dialog.run())
747	{
748	case Gtk::RESPONSE_NONE:
749	case Gtk::RESPONSE_CANCEL:
750	break;
751	case Gtk::RESPONSE_ACCEPT:
752	double new_value = spin.get_value();
753	(*(mytab.mapstorage).edgemap_storage[edgemap_to_edit])[active_edge] =
754	new_value;
755	std::ostringstream ostr;
756	ostr << new_value;
757	edgetextmap[active_edge]->property_text().set_value(
758	ostr.str());
759	//mapwin.updateEdge(active_edge);
760	// mapwin.updateEdge(Edge(INVALID));
761	propertyUpdate(Edge(INVALID));
762	}
763	}
764	}
765	break;
766	}
767	default:
768	break;
769	}
770	}
771	return false;
772	}
773
774	void GraphDisplayerCanvas::deleteItem(Node node_to_delete)
775	{
776	delete(nodetextmap[node_to_delete]);
777	delete(nodesmap[node_to_delete]);
778	(mytab.mapstorage).graph.erase(node_to_delete);
779	}
780
781	void GraphDisplayerCanvas::deleteItem(Edge edge_to_delete)
782	{
783	delete(edgetextmap[edge_to_delete]);
784	delete(edgesmap[edge_to_delete]);
785	(mytab.mapstorage).graph.erase(edge_to_delete);
786	}
787
788	void GraphDisplayerCanvas::textReposition(XY new_place)
789	{
790	new_place+=(XY(10,10));
791	edgetextmap[forming_edge]->property_x().set_value(new_place.x);
792	edgetextmap[forming_edge]->property_y().set_value(new_place.y);
793	}
794
795	void GraphDisplayerCanvas::toggleEdgeActivity(EdgeBase* active_bre, bool on)
796	{
797	if(on)
798	{
799	if(forming_edge!=INVALID)
800	{
801	std::cerr << "ERROR!!!! Valid edge found!" << std::endl;
802	}
803	else
804	{
805	for (EdgeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
806	{
807	if(edgesmap[i]==active_bre)
808	{
809	forming_edge=i;
810	}
811	}
812	}
813	}
814	else
815	{
816	if(forming_edge!=INVALID)
817	{
818	forming_edge=INVALID;
819	}
820	else
821	{
822	std::cerr << "ERROR!!!! Invalid edge found!" << std::endl;
823	}
824	}
825	}

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