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source: glemon-0.x/graph_displayer_canvas-event.cc @ 92:ee2bd58fdc30

gui

Last change on this file since 92:ee2bd58fdc30 was 92:ee2bd58fdc30, checked in by Akos Ladanyi, 18 years ago
clean-up
Property exe set to ``*
File size: 23.5 KB

Rev	Line
[53]	1	#include "graph_displayer_canvas.h"
[59]	2	#include <cmath>
[27]	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	{
[34]	15	if(actual_tool!=newtool)
	16	{
[27]	17
[34]	18	actual_handler.disconnect();
[27]	19
[34]	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 EDGE_MAP_EDIT:
[35]	31	//has to do the same thing as in the case of NODE_MAP_EDIT
	32	case NODE_MAP_EDIT:
	33	{
	34	break;
	35	}
[34]	36	default:
	37	break;
	38	}
[27]	39
[34]	40	active_item=NULL;
	41	target_item=NULL;
	42	active_edge=INVALID;
	43	active_node=INVALID;
[33]	44
[27]	45
[34]	46	actual_tool=newtool;
	47
	48	switch(newtool)
	49	{
	50	case MOVE:
	51	actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::moveEventHandler), false);
	52	break;
[27]	53
[34]	54	case CREATE_NODE:
	55	actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::createNodeEventHandler), false);
	56	break;
[27]	57
[34]	58	case CREATE_EDGE:
	59	actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::createEdgeEventHandler), false);
	60	break;
[27]	61
[34]	62	case ERASER:
	63	actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::eraserEventHandler), false);
	64	break;
[32]	65
[34]	66	case EDGE_MAP_EDIT:
	67	grab_focus();
	68	actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::edgeMapEditEventHandler), false);
	69	break;
[32]	70
[34]	71	case NODE_MAP_EDIT:
	72	actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::nodeMapEditEventHandler), false);
	73	break;
	74
	75	default:
	76	break;
	77	}
[27]	78	}
	79	}
	80
[30]	81	int GraphDisplayerCanvas::getActualTool()
[27]	82	{
	83	return actual_tool;
	84	}
	85
[30]	86	bool GraphDisplayerCanvas::moveEventHandler(GdkEvent* e)
[27]	87	{
[70]	88	static Gnome::Canvas::Text *coord_text = 0;
[27]	89	switch(e->type)
	90	{
	91	case GDK_BUTTON_PRESS:
	92	//we mark the location of the event to be able to calculate parameters of dragging
[31]	93	window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
	94
	95	active_item=(get_item_at(clicked_x, clicked_y));
[27]	96	active_node=INVALID;
[53]	97	for (NodeIt i(mapstorage.graph); i!=INVALID; ++i)
[27]	98	{
	99	if(nodesmap[i]==active_item)
	100	{
	101	active_node=i;
	102	}
	103	}
	104	switch(e->button.button)
	105	{
	106	case 3:
	107	isbutton=3;
	108	break;
	109	default:
	110	isbutton=1;
	111	break;
	112	}
	113	break;
	114	case GDK_BUTTON_RELEASE:
[70]	115	if (coord_text)
	116	{
	117	delete coord_text;
	118	coord_text = 0;
	119	}
[27]	120	isbutton=0;
	121	active_item=NULL;
	122	active_node=INVALID;
	123	break;
	124	case GDK_MOTION_NOTIFY:
	125	//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
	126	if(active_node!=INVALID)
	127	{
[53]	128	mapstorage.modified = true;
[70]	129
[27]	130	//new coordinates will be the old values,
	131	//because the item will be moved to the
	132	//new coordinate therefore the new movement
	133	//has to be calculated from here
	134
[31]	135	double new_x, new_y;
	136
	137	window_to_world (e->motion.x, e->motion.y, new_x, new_y);
	138
	139	double dx=new_x-clicked_x;
	140	double dy=new_y-clicked_y;
[27]	141
[28]	142	//repositioning node and its text
[27]	143	active_item->move(dx, dy);
[28]	144	nodetextmap[active_node]->move(dx, dy);
[27]	145
[70]	146	// the new coordinates of the centre of the node
	147	double coord_x = new_x - (clicked_x - mapstorage.coords[active_node].x);
	148	double coord_y = new_y - (clicked_y - mapstorage.coords[active_node].y);
	149
[31]	150	clicked_x=new_x;
	151	clicked_y=new_y;
[27]	152
[70]	153	// write back the new coordinates to the coords map
	154	mapstorage.coords.set(active_node, xy<double>(coord_x, coord_y));
[27]	155
[70]	156	// reposition the coordinates text
	157	std::ostringstream ostr;
	158	ostr << "(" <<
	159	mapstorage.coords[active_node].x << ", " <<
	160	mapstorage.coords[active_node].y << ")";
[72]	161	double radius =
	162	(nodesmap[active_node]->property_x2().get_value() -
	163	nodesmap[active_node]->property_x1().get_value()) / 2.0;
[70]	164	if (coord_text)
	165	{
	166	coord_text->property_text().set_value(ostr.str());
	167	coord_text->property_x().set_value(mapstorage.coords[active_node].x +
[72]	168	radius);
	169	coord_text->property_y().set_value(mapstorage.coords[active_node].y -
	170	radius);
[70]	171	}
	172	else
	173	{
	174	coord_text = new Gnome::Canvas::Text(
	175	displayed_graph,
[72]	176	mapstorage.coords[active_node].x + radius,
	177	mapstorage.coords[active_node].y - radius,
[70]	178	ostr.str());
	179	coord_text->property_fill_color().set_value("black");
[72]	180	coord_text->property_anchor().set_value(Gtk::ANCHOR_SOUTH_WEST);
[70]	181	}
	182
	183	//all the edges connected to the moved point has to be redrawn
[69]	184	for(OutEdgeIt ei(mapstorage.graph,active_node);ei!=INVALID;++ei)
[27]	185	{
	186	Gnome::Canvas::Points coos;
	187	double x1, x2, y1, y2;
	188
[53]	189	nodesmap[mapstorage.graph.source(ei)]->get_bounds(x1, y1, x2, y2);
[27]	190	coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
	191
[53]	192	nodesmap[mapstorage.graph.target(ei)]->get_bounds(x1, y1, x2, y2);
[27]	193	coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
	194
	195	if(isbutton==3)
	196	{
[30]	197	edgesmap[ei]->setPoints(coos);
[27]	198	}
	199	else
	200	{
[30]	201	edgesmap[ei]->setPoints(coos,true);
[27]	202	}
	203
[28]	204	//reposition of edgetext
[30]	205	xy<double> text_pos=edgesmap[ei]->getArrowPos();
[27]	206	text_pos+=(xy<double>(10,10));
	207	edgetextmap[ei]->property_x().set_value(text_pos.x);
	208	edgetextmap[ei]->property_y().set_value(text_pos.y);
	209	}
	210
[69]	211	for(InEdgeIt ei(mapstorage.graph,active_node);ei!=INVALID;++ei)
[27]	212	{
	213	Gnome::Canvas::Points coos;
	214	double x1, x2, y1, y2;
	215
[53]	216	nodesmap[mapstorage.graph.source(ei)]->get_bounds(x1, y1, x2, y2);
[27]	217	coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
	218
[53]	219	nodesmap[mapstorage.graph.target(ei)]->get_bounds(x1, y1, x2, y2);
[27]	220	coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
	221
	222	if(isbutton==3)
	223	{
[30]	224	edgesmap[ei]->setPoints(coos);
[27]	225	}
	226	else
	227	{
[30]	228	edgesmap[ei]->setPoints(coos,true);
[27]	229	}
	230
[30]	231	xy<double> text_pos=edgesmap[ei]->getArrowPos();
[27]	232	text_pos+=(xy<double>(10,10));
	233	edgetextmap[ei]->property_x().set_value(text_pos.x);
	234	edgetextmap[ei]->property_y().set_value(text_pos.y);
	235	}
	236	}
	237	default: break;
	238	}
	239
[31]	240	return false;
[27]	241	}
	242
[30]	243	bool GraphDisplayerCanvas::createNodeEventHandler(GdkEvent* e)
[27]	244	{
	245	switch(e->type)
[63]	246	{
	247	//move the new node
	248	case GDK_MOTION_NOTIFY:
	249	{
	250	GdkEvent * generated=new GdkEvent();
	251	generated->motion.x=e->motion.x;
	252	generated->motion.y=e->motion.y;
	253	generated->type=GDK_MOTION_NOTIFY;
	254	moveEventHandler(generated);
	255	break;
	256	}
[27]	257
[63]	258	case GDK_BUTTON_RELEASE:
[53]	259	mapstorage.modified = true;
	260
[27]	261	isbutton=1;
	262
[62]	263	active_node=mapstorage.graph.addNode();
[27]	264
	265	//initiating values corresponding to new node in maps
	266
	267	window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
	268
[63]	269	// update coordinates
[53]	270	mapstorage.coords.set(active_node, xy<double>(clicked_x, clicked_y));
[63]	271
	272	// update all other maps
	273	for (std::map<std::string, Graph::NodeMap<double>*>::const_iterator it =
	274	mapstorage.nodemap_storage.begin(); it !=
	275	mapstorage.nodemap_storage.end(); ++it)
	276	{
[64]	277	if ((it->first != "coordinates_x") &&
	278	(it->first != "coordinates_y"))
[63]	279	{
	280	(*(it->second))[active_node] =
	281	mapstorage.nodemap_default[it->first];
	282	}
	283	}
[64]	284	// increment the id map's default value
	285	mapstorage.nodemap_default["id"] += 1.0;
[63]	286
[53]	287	nodesmap[active_node]=new Gnome::Canvas::Ellipse(displayed_graph,
[63]	288	clicked_x-20, clicked_y-20, clicked_x+20, clicked_y+20);
[27]	289	active_item=(Gnome::Canvas::Item *)(nodesmap[active_node]);
[63]	290	*(nodesmap[active_node]) <<
	291	Gnome::Canvas::Properties::fill_color("blue");
	292	*(nodesmap[active_node]) <<
	293	Gnome::Canvas::Properties::outline_color("black");
	294	active_item->raise_to_top();
	295
[27]	296	(nodesmap[active_node])->show();
[28]	297
[53]	298	nodetextmap[active_node]=new Gnome::Canvas::Text(displayed_graph,
[63]	299	clicked_x+node_property_defaults[N_RADIUS]+5,
	300	clicked_y+node_property_defaults[N_RADIUS]+5, "");
[28]	301	nodetextmap[active_node]->property_fill_color().set_value("darkblue");
[63]	302	nodetextmap[active_node]->raise_to_top();
[28]	303
[53]	304	mapwin.updateNode(active_node);
[28]	305
[27]	306	isbutton=0;
[31]	307	target_item=NULL;
[27]	308	active_item=NULL;
	309	active_node=INVALID;
	310	break;
	311	default:
	312	break;
[63]	313	}
[27]	314	return false;
	315	}
	316
[30]	317	bool GraphDisplayerCanvas::createEdgeEventHandler(GdkEvent* e)
[27]	318	{
	319	switch(e->type)
[63]	320	{
[27]	321	case GDK_BUTTON_PRESS:
	322	//in edge creation right button has special meaning
	323	if(e->button.button!=3)
[63]	324	{
	325	//there is not yet selected node
	326	if(active_node==INVALID)
	327	{
	328	//we mark the location of the event to be able to calculate parameters of dragging
[31]	329
[63]	330	window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
[31]	331
[63]	332	active_item=(get_item_at(clicked_x, clicked_y));
	333	active_node=INVALID;
	334	for (NodeIt i(mapstorage.graph); i!=INVALID; ++i)
	335	{
	336	if(nodesmap[i]==active_item)
	337	{
	338	active_node=i;
	339	}
	340	}
	341	//the clicked item is really a node
	342	if(active_node!=INVALID)
	343	{
	344	*(nodesmap[active_node]) << Gnome::Canvas::Properties::fill_color("red");
	345	isbutton=1;
	346	}
	347	//clicked item was not a node. It could be e.g. edge.
	348	else
	349	{
	350	active_item=NULL;
	351	}
	352	}
	353	//we only have to do sg. if the mouse button
	354	// is pressed already once AND the click was
	355	// on a node that was found in the set of
	356	//nodes, and now we only search for the second
	357	//node
	358	else
	359	{
	360	window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
	361	target_item=(get_item_at(clicked_x, clicked_y));
	362	Node target_node=INVALID;
	363	for (NodeIt i(mapstorage.graph); i!=INVALID; ++i)
	364	{
	365	if(nodesmap[i]==target_item)
	366	{
	367	target_node=i;
	368	}
	369	}
	370	//the clicked item is a node, the edge can be drawn
	371	if(target_node!=INVALID)
	372	{
	373	if(target_node!=active_node)
	374	{
	375	mapstorage.modified = true;
[53]	376
[63]	377	*(nodesmap[target_node]) <<
	378	Gnome::Canvas::Properties::fill_color("red");
[27]	379
[63]	380	//creating new edge
	381	active_edge=mapstorage.graph.addEdge(active_node,
	382	target_node);
[27]	383
[64]	384	// update maps
[63]	385	for (std::map<std::string,
	386	Graph::EdgeMap<double>*>::const_iterator it =
	387	mapstorage.edgemap_storage.begin(); it !=
	388	mapstorage.edgemap_storage.end(); ++it)
	389	{
[64]	390	(*(it->second))[active_edge] =
	391	mapstorage.edgemap_default[it->first];
[63]	392	}
[64]	393	// increment the id map's default value
	394	mapstorage.edgemap_default["id"] += 1.0;
[27]	395
[63]	396	//calculating coordinates of new edge
	397	Gnome::Canvas::Points coos;
	398	double x1, x2, y1, y2;
[27]	399
[63]	400	active_item->get_bounds(x1, y1, x2, y2);
	401	coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
[27]	402
[63]	403	target_item->get_bounds(x1, y1, x2, y2);
	404	coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
[27]	405
[63]	406	//drawing new edge
	407	edgesmap[active_edge]=new BrokenEdge(displayed_graph, coos,
	408	*this);
	409	*(edgesmap[active_edge]) <<
	410	Gnome::Canvas::Properties::fill_color("green");
	411	edgesmap[active_edge]->property_width_pixels().set_value(10);
[27]	412
[63]	413	edgesmap[active_edge]->lower_to_bottom();
[28]	414
[63]	415	//initializing edge-text as well, to empty string
	416	xy<double> text_pos=edgesmap[active_edge]->getArrowPos();
	417	text_pos+=(xy<double>(10,10));
	418
	419	edgetextmap[active_edge]=new Gnome::Canvas::Text(displayed_graph,
	420	text_pos.x, text_pos.y, "");
	421	edgetextmap[active_edge]->property_fill_color().set_value(
	422	"darkgreen");
	423	edgetextmap[active_edge]->raise_to_top();
	424
	425	//updating its properties
	426	mapwin.updateEdge(active_edge);
	427	}
	428	else
	429	{
	430	target_node=INVALID;
	431	std::cerr << "Loop edge is not yet implemented!" << std::endl;
	432	}
	433	}
	434	//clicked item was not a node. it could be an e.g. edge. we do not
	435	//deal with it furthermore.
	436	else
	437	{
	438	target_item=NULL;
	439	}
	440	}
	441	}
[27]	442	break;
	443	case GDK_BUTTON_RELEASE:
	444	isbutton=0;
	445	//we clear settings in two cases
	446	//1: the edge is ready (target_item has valid value)
	447	//2: the edge creation is cancelled with right button
	448	if((target_item)\|\|(e->button.button==3))
[63]	449	{
	450	if(active_item)
	451	{
	452	*active_item << Gnome::Canvas::Properties::fill_color("blue");
	453	active_item=NULL;
	454	}
	455	if(target_item)
	456	{
	457	*target_item << Gnome::Canvas::Properties::fill_color("blue");
	458	target_item=NULL;
	459	}
	460	active_node=INVALID;
	461	active_edge=INVALID;
	462	}
[27]	463	break;
	464	default:
	465	break;
[63]	466	}
[27]	467	return false;
	468	}
	469
[30]	470	bool GraphDisplayerCanvas::eraserEventHandler(GdkEvent* e)
[27]	471	{
	472	switch(e->type)
	473	{
	474	case GDK_BUTTON_PRESS:
[43]	475	//finding the clicked items
[31]	476	window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
	477	active_item=(get_item_at(clicked_x, clicked_y));
[27]	478	active_node=INVALID;
	479	active_edge=INVALID;
[43]	480	//was it a node?
[53]	481	for (NodeIt i(mapstorage.graph); i!=INVALID; ++i)
[27]	482	{
	483	if(nodesmap[i]==active_item)
	484	{
	485	active_node=i;
	486	}
	487	}
[43]	488	//or was it an edge?
[27]	489	if(active_node==INVALID)
	490	{
[53]	491	for (EdgeIt i(mapstorage.graph); i!=INVALID; ++i)
[27]	492	{
	493	if(edgesmap[i]==active_item)
	494	{
	495	active_edge=i;
	496	}
	497	}
	498	}
[43]	499
	500	//recolor activated item
[31]	501	if(active_item)
	502	{
	503	*active_item << Gnome::Canvas::Properties::fill_color("red");
	504	}
[27]	505	break;
	506
	507	case GDK_BUTTON_RELEASE:
[31]	508	window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
	509	if(active_item)
[27]	510	{
[43]	511	//the cursor was not moved since pressing it
[31]	512	if( active_item == ( get_item_at (clicked_x, clicked_y) ) )
[27]	513	{
[43]	514	//a node was found
[31]	515	if(active_node!=INVALID)
	516	{
[53]	517	mapstorage.modified = true;
[27]	518
[31]	519	std::set<Graph::Edge> edges_to_delete;
[27]	520
[69]	521	for(OutEdgeIt e(mapstorage.graph,active_node);e!=INVALID;++e)
[31]	522	{
	523	edges_to_delete.insert(e);
	524	}
[69]	525
	526	for(InEdgeIt e(mapstorage.graph,active_node);e!=INVALID;++e)
[31]	527	{
	528	edges_to_delete.insert(e);
	529	}
[69]	530
[31]	531	//deleting collected edges
[69]	532	for(std::set<Graph::Edge>::iterator
	533	edge_set_it=edges_to_delete.begin();
	534	edge_set_it!=edges_to_delete.end();
	535	++edge_set_it)
[31]	536	{
	537	deleteItem(*edge_set_it);
	538	}
	539	deleteItem(active_node);
	540	}
	541	//a simple edge was chosen
	542	else
[27]	543	{
[31]	544	deleteItem(active_edge);
[27]	545	}
	546	}
[31]	547	//pointer was moved, deletion is cancelled
[27]	548	else
	549	{
[31]	550	if(active_node!=INVALID)
	551	{
	552	*active_item << Gnome::Canvas::Properties::fill_color("blue");
	553	}
	554	else
	555	{
	556	*active_item << Gnome::Canvas::Properties::fill_color("green");
	557	}
[27]	558	}
	559	}
	560	//reseting datas
	561	active_item=NULL;
	562	active_edge=INVALID;
	563	active_node=INVALID;
	564	break;
	565
	566	case GDK_MOTION_NOTIFY:
	567	break;
	568
	569	default:
	570	break;
	571	}
[31]	572	return false;
[27]	573	}
	574
[32]	575	bool GraphDisplayerCanvas::edgeMapEditEventHandler(GdkEvent* e)
	576	{
[48]	577	if(actual_tool==EDGE_MAP_EDIT)
[66]	578	{
	579	switch(e->type)
[32]	580	{
[66]	581	case GDK_BUTTON_PRESS:
	582	{
	583	//for determine, whether it was an edge
	584	Edge clicked_edge=INVALID;
[43]	585
[66]	586	window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
	587	active_item=(get_item_at(clicked_x, clicked_y));
[48]	588
[66]	589	//find the activated item between texts
	590	for (EdgeIt i(mapstorage.graph); i!=INVALID; ++i)
	591	{
	592	//at the same time only one can be active
	593	if(edgetextmap[i]==active_item)
	594	{
	595	clicked_edge=i;
	596	}
	597	}
[65]	598
[66]	599	//if it was not between texts, search for it between edges
	600	if(clicked_edge==INVALID)
	601	{
	602	for (EdgeIt i(mapstorage.graph); i!=INVALID; ++i)
	603	{
	604	//at the same time only one can be active
	605	if((edgesmap[i]==active_item)\|\|(edgetextmap[i]==active_item))
	606	{
	607	clicked_edge=i;
	608	}
	609	}
	610	}
	611
	612	//if it was really an edge...
	613	if(clicked_edge!=INVALID)
	614	{
	615	// the id map is not editable
	616	if (edgemap_to_edit == "id") return 0;
[48]	617
[66]	618	//and there is activated map
	619	if(edgetextmap[clicked_edge]->property_text().get_value()!="")
	620	{
	621	//activate the general variable for it
	622	active_edge=clicked_edge;
[48]	623
[66]	624	//create a dialog
	625	Gtk::Dialog dialog("Edit value", *parentwin, true);
	626	dialog.add_button(Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
	627	dialog.add_button(Gtk::Stock::OK, Gtk::RESPONSE_ACCEPT);
	628	Gtk::VBox* vbox = dialog.get_vbox();
[92]	629	Gtk::SpinButton spin(0.0, 4);
	630	spin.set_increments(1.0, 10.0);
	631	spin.set_range(-1000000.0, 1000000.0);
[66]	632	spin.set_numeric(true);
	633	vbox->add(spin);
	634	spin.show();
	635	switch (dialog.run())
	636	{
	637	case Gtk::RESPONSE_NONE:
	638	case Gtk::RESPONSE_CANCEL:
	639	break;
	640	case Gtk::RESPONSE_ACCEPT:
	641	double new_value = spin.get_value();
	642	(*mapstorage.edgemap_storage[edgemap_to_edit])[active_edge] =
	643	new_value;
	644	std::ostringstream ostr;
	645	ostr << new_value;
	646	edgetextmap[active_edge]->property_text().set_value(
	647	ostr.str());
	648	//mapwin.updateEdge(active_edge);
	649	mapwin.updateEdge(Edge(INVALID));
	650	}
	651	}
	652	}
	653	break;
	654	}
	655	default:
	656	break;
[32]	657	}
[66]	658	}
[32]	659	return false;
	660	}
	661
	662	bool GraphDisplayerCanvas::nodeMapEditEventHandler(GdkEvent* e)
	663	{
[48]	664	if(actual_tool==NODE_MAP_EDIT)
[66]	665	{
	666	switch(e->type)
[35]	667	{
[66]	668	case GDK_BUTTON_PRESS:
	669	{
	670	//for determine, whether it was a node
	671	Node clicked_node=INVALID;
[43]	672
[66]	673	window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
	674	active_item=(get_item_at(clicked_x, clicked_y));
[43]	675
[66]	676	//find the activated item between texts
	677	for (NodeIt i(mapstorage.graph); i!=INVALID; ++i)
	678	{
	679	//at the same time only one can be active
	680	if(nodetextmap[i]==active_item)
	681	{
	682	clicked_node=i;
	683	}
	684	}
[48]	685
[66]	686	//if there was not, search for it between nodes
	687	if(clicked_node==INVALID)
	688	{
	689	for (NodeIt i(mapstorage.graph); i!=INVALID; ++i)
	690	{
	691	//at the same time only one can be active
	692	if(nodesmap[i]==active_item)
	693	{
	694	clicked_node=i;
	695	}
	696	}
	697	}
[48]	698
[66]	699	//if it was really a node...
	700	if(clicked_node!=INVALID)
	701	{
	702	// the id map is not editable
	703	if (nodemap_to_edit == "id") return 0;
[48]	704
[66]	705	//and there is activated map
	706	if(nodetextmap[clicked_node]->property_text().get_value()!="")
	707	{
	708	//activate the general variable for it
	709	active_node=clicked_node;
[48]	710
[66]	711	//create a dialog
	712	Gtk::Dialog dialog("Edit value", *parentwin, true);
	713	dialog.add_button(Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
	714	dialog.add_button(Gtk::Stock::OK, Gtk::RESPONSE_ACCEPT);
	715	Gtk::VBox* vbox = dialog.get_vbox();
[92]	716	Gtk::SpinButton spin(0.0, 4);
	717	spin.set_increments(1.0, 10.0);
	718	spin.set_range(-1000000.0, 1000000.0);
[66]	719	spin.set_numeric(true);
	720	vbox->add(spin);
	721	spin.show();
	722	switch (dialog.run())
	723	{
	724	case Gtk::RESPONSE_NONE:
	725	case Gtk::RESPONSE_CANCEL:
	726	break;
	727	case Gtk::RESPONSE_ACCEPT:
	728	double new_value = spin.get_value();
	729	(*mapstorage.nodemap_storage[nodemap_to_edit])[active_node] =
	730	new_value;
	731	std::ostringstream ostr;
	732	ostr << new_value;
	733	nodetextmap[active_node]->property_text().set_value(
	734	ostr.str());
	735	//mapwin.updateNode(active_node);
	736	mapwin.updateNode(Node(INVALID));
	737	}
	738	}
	739	}
	740	break;
	741	}
	742	default:
	743	break;
[35]	744	}
[66]	745	}
[35]	746	return false;
[32]	747	}
	748
[62]	749	void GraphDisplayerCanvas::deleteItem(Node node_to_delete)
[27]	750	{
[28]	751	delete(nodetextmap[node_to_delete]);
[27]	752	delete(nodesmap[node_to_delete]);
[53]	753	mapstorage.graph.erase(node_to_delete);
[27]	754	}
	755
[62]	756	void GraphDisplayerCanvas::deleteItem(Edge edge_to_delete)
[27]	757	{
[28]	758	delete(edgetextmap[edge_to_delete]);
[27]	759	delete(edgesmap[edge_to_delete]);
[53]	760	mapstorage.graph.erase(edge_to_delete);
[27]	761	}
	762
[30]	763	void GraphDisplayerCanvas::textReposition(xy<double> new_place)
[27]	764	{
	765	new_place+=(xy<double>(10,10));
[35]	766	edgetextmap[forming_edge]->property_x().set_value(new_place.x);
	767	edgetextmap[forming_edge]->property_y().set_value(new_place.y);
[27]	768	}
	769
[30]	770	void GraphDisplayerCanvas::toggleEdgeActivity(BrokenEdge* active_bre, bool on)
[27]	771	{
	772	if(on)
	773	{
[35]	774	if(forming_edge!=INVALID)
[27]	775	{
[48]	776	std::cerr << "ERROR!!!! Valid edge found!" << std::endl;
[27]	777	}
	778	else
	779	{
[53]	780	for (EdgeIt i(mapstorage.graph); i!=INVALID; ++i)
[27]	781	{
	782	if(edgesmap[i]==active_bre)
	783	{
[35]	784	forming_edge=i;
[27]	785	}
	786	}
	787	}
	788	}
	789	else
	790	{
[35]	791	if(forming_edge!=INVALID)
[27]	792	{
[35]	793	forming_edge=INVALID;
[27]	794	}
	795	else
	796	{
[48]	797	std::cerr << "ERROR!!!! Invalid edge found!" << std::endl;
[27]	798	}
	799	}
	800
	801	}
[32]	802
[46]	803	int GraphDisplayerCanvas::addNewEdgeMap(double default_value, std::string mapname)
[37]	804	{
[43]	805	//create the new map
[53]	806	Graph::EdgeMap<double> * emptr=new Graph::EdgeMap<double> (mapstorage.graph, default_value);
[46]	807
	808	//if addition was not successful addEdgeMap returns one.
	809	//cause can be that there is already a map named like the new one
[63]	810	if(mapstorage.addEdgeMap(mapname,emptr, default_value))
[46]	811	{
	812	return 1;
	813	}
	814
[43]	815
	816	//add it to the list of the displayable maps
[53]	817	mapwin.registerNewEdgeMap(mapname);
[43]	818
	819	//display it
[41]	820	changeEdgeText(mapname);
[46]	821
	822	return 0;
[37]	823	}
	824
[46]	825	int GraphDisplayerCanvas::addNewNodeMap(double default_value, std::string mapname)
[37]	826	{
[43]	827	//create the new map
[53]	828	Graph::NodeMap<double> * emptr=new Graph::NodeMap<double> (mapstorage.graph,default_value);
[46]	829
	830	//if addition was not successful addNodeMap returns one.
	831	//cause can be that there is already a map named like the new one
[63]	832	if(mapstorage.addNodeMap(mapname,emptr, default_value))
[46]	833	{
	834	return 1;
	835	}
[43]	836
	837	//add it to the list of the displayable maps
[53]	838	mapwin.registerNewNodeMap(mapname);
[43]	839
	840	//display it
[41]	841	changeNodeText(mapname);
[46]	842
	843	return 0;
[37]	844	}
	845

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