According to xy->Point changement.
1 #include "graph_displayer_canvas.h"
5 bool GraphDisplayerCanvas::on_expose_event(GdkEventExpose *event)
7 Gnome::Canvas::CanvasAA::on_expose_event(event);
13 void GraphDisplayerCanvas::changeEditorialTool(int newtool)
15 if(actual_tool!=newtool)
18 actual_handler.disconnect();
24 GdkEvent * generated=new GdkEvent();
25 generated->type=GDK_BUTTON_RELEASE;
26 generated->button.button=3;
27 createEdgeEventHandler(generated);
49 actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::moveEventHandler), false);
53 actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::createNodeEventHandler), false);
57 actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::createEdgeEventHandler), false);
61 actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::eraserEventHandler), false);
66 actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::mapEditEventHandler), false);
75 int GraphDisplayerCanvas::getActualTool()
80 bool GraphDisplayerCanvas::moveEventHandler(GdkEvent* e)
82 static Gnome::Canvas::Text *coord_text = 0;
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);
89 active_item=(get_item_at(clicked_x, clicked_y));
91 for (NodeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
93 if(nodesmap[i]==active_item)
98 isbutton=e->button.button;
100 case GDK_BUTTON_RELEASE:
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)
114 (mytab.mapstorage).modified = true;
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
123 window_to_world (e->motion.x, e->motion.y, new_x, new_y);
125 double dx=new_x-clicked_x;
126 double dy=new_y-clicked_y;
128 //repositioning node and its text
129 active_item->move(dx, dy);
130 nodetextmap[active_node]->move(dx, dy);
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);
136 // write back the new coordinates to the coords map
137 (mytab.mapstorage).coords.set(active_node, XY(coord_x, coord_y));
142 // reposition the coordinates text
143 std::ostringstream ostr;
145 (mytab.mapstorage).coords[active_node].x << ", " <<
146 (mytab.mapstorage).coords[active_node].y << ")";
148 (nodesmap[active_node]->property_x2().get_value() -
149 nodesmap[active_node]->property_x1().get_value()) / 2.0;
152 coord_text->property_text().set_value(ostr.str());
153 coord_text->property_x().set_value((mytab.mapstorage).coords[active_node].x +
155 coord_text->property_y().set_value((mytab.mapstorage).coords[active_node].y -
160 coord_text = new Gnome::Canvas::Text(
162 (mytab.mapstorage).coords[active_node].x + radius,
163 (mytab.mapstorage).coords[active_node].y - radius,
165 coord_text->property_fill_color().set_value("black");
166 coord_text->property_anchor().set_value(Gtk::ANCHOR_SOUTH_WEST);
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)
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]);
180 arrow_pos = calcArrowPos(moved_node_1, moved_node_2, fix_node, old_arrow_pos, isbutton);
182 mytab.mapstorage.arrow_pos.set(ei, arrow_pos);
183 edgesmap[ei]->draw();
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);
192 for(InEdgeIt ei((mytab.mapstorage).graph,active_node);ei!=INVALID;++ei)
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]);
202 arrow_pos = calcArrowPos(moved_node_1, moved_node_2, fix_node, old_arrow_pos, isbutton);
204 mytab.mapstorage.arrow_pos.set(ei, arrow_pos);
205 edgesmap[ei]->draw();
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);
220 XY GraphDisplayerCanvas::calcArrowPos(XY moved_node_1, XY moved_node_2, XY fix_node, XY old_arrow_pos, int move_code)
225 return XY((moved_node_2.x + fix_node.x) / 2.0, (moved_node_2.y + fix_node.y) / 2.0);
228 return old_arrow_pos;
232 //////////////////////////////////////////////////////////////////////////////////////////////////////
233 /////////// keeps shape-with scalar multiplication - version 2.
234 //////////////////////////////////////////////////////////////////////////////////////////////////////
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);
241 double absa=sqrt(a_v.normSquare());
242 double absb=sqrt(b_v.normSquare());
244 if ((absa == 0.0) || (absb == 0.0))
246 return old_arrow_pos;
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);
253 //unit vector with the same direction to a_v
254 XY a_v_u(a_v.x/absa,a_v.y/absa);
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);
259 //unit vector with the same direction to b_v
260 XY b_v_u(b_v.x/absb,b_v.y/absb);
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);
265 //vector c in a_v_u and a_v_u_n co-ordinate system
266 XY c_a(c_v*a_v_u,c_v*a_v_u_n);
268 //new vector from one node to the breakpoint - d - we have to calculate this one
269 XY d_v=absb/absa*(c_a.x*b_v_u+c_a.y*b_v_u_n);
271 return XY(d_v.x+fix_node.x,d_v.y+fix_node.y);
281 bool GraphDisplayerCanvas::createNodeEventHandler(GdkEvent* e)
286 case GDK_MOTION_NOTIFY:
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);
296 case GDK_BUTTON_RELEASE:
297 (mytab.mapstorage).modified = true;
301 active_node=(mytab.mapstorage).graph.addNode();
303 //initiating values corresponding to new node in maps
305 window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
307 // update coordinates
308 (mytab.mapstorage).coords.set(active_node, XY(clicked_x, clicked_y));
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)
315 if ((it->first != "coordinates_x") &&
316 (it->first != "coordinates_y"))
318 (*(it->second))[active_node] =
319 (mytab.mapstorage).nodemap_default[it->first];
322 // increment the id map's default value
323 (mytab.mapstorage).nodemap_default["label"] += 1.0;
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();
334 (nodesmap[active_node])->show();
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();
342 // mapwin.updateNode(active_node);
343 propertyUpdate(active_node);
356 bool GraphDisplayerCanvas::createEdgeEventHandler(GdkEvent* e)
360 case GDK_BUTTON_PRESS:
361 //in edge creation right button has special meaning
362 if(e->button.button!=3)
364 //there is not yet selected node
365 if(active_node==INVALID)
367 //we mark the location of the event to be able to calculate parameters of dragging
369 window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
371 active_item=(get_item_at(clicked_x, clicked_y));
373 for (NodeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
375 if(nodesmap[i]==active_item)
380 //the clicked item is really a node
381 if(active_node!=INVALID)
383 *(nodesmap[active_node]) << Gnome::Canvas::Properties::fill_color("red");
386 //clicked item was not a node. It could be e.g. edge.
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
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)
404 if(nodesmap[i]==target_item)
409 //the clicked item is a node, the edge can be drawn
410 if(target_node!=INVALID)
412 if(target_node!=active_node)
414 (mytab.mapstorage).modified = true;
416 *(nodesmap[target_node]) <<
417 Gnome::Canvas::Properties::fill_color("red");
420 active_edge=(mytab.mapstorage).graph.addEdge(active_node,
424 for (std::map<std::string,
425 Graph::EdgeMap<double>*>::const_iterator it =
426 (mytab.mapstorage).edgemap_storage.begin(); it !=
427 (mytab.mapstorage).edgemap_storage.end(); ++it)
429 (*(it->second))[active_edge] =
430 (mytab.mapstorage).edgemap_default[it->first];
432 // increment the id map's default value
433 (mytab.mapstorage).edgemap_default["label"] += 1.0;
435 //calculating coordinates of new edge
436 Gnome::Canvas::Points coos;
437 double x1, x2, y1, y2;
439 active_item->get_bounds(x1, y1, x2, y2);
440 coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
442 target_item->get_bounds(x1, y1, x2, y2);
443 coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
445 // set the coordinates of the arrow on the new edge
446 MapStorage& ms = mytab.mapstorage;
447 ms.arrow_pos.set(active_edge,
448 (ms.coords[ms.graph.source(active_edge)] +
449 ms.coords[ms.graph.target(active_edge)])/ 2.0);
452 edgesmap[active_edge]=new BrokenEdge(displayed_graph, active_edge,
455 //initializing edge-text as well, to empty string
456 XY text_pos=mytab.mapstorage.arrow_pos[active_edge];
457 text_pos+=(XY(10,10));
459 edgetextmap[active_edge]=new Gnome::Canvas::Text(displayed_graph,
460 text_pos.x, text_pos.y, "");
461 edgetextmap[active_edge]->property_fill_color().set_value(
463 edgetextmap[active_edge]->raise_to_top();
465 //updating its properties
466 // mapwin.updateEdge(active_edge);
467 propertyUpdate(active_edge);
472 std::cerr << "Loop edge is not yet implemented!" << std::endl;
475 //clicked item was not a node. it could be an e.g. edge. we do not
476 //deal with it furthermore.
484 case GDK_BUTTON_RELEASE:
486 //we clear settings in two cases
487 //1: the edge is ready (target_item has valid value)
488 //2: the edge creation is cancelled with right button
489 if((target_item)||(e->button.button==3))
493 *active_item << Gnome::Canvas::Properties::fill_color("blue");
498 *target_item << Gnome::Canvas::Properties::fill_color("blue");
511 bool GraphDisplayerCanvas::eraserEventHandler(GdkEvent* e)
515 case GDK_BUTTON_PRESS:
516 //finding the clicked items
517 window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
518 active_item=(get_item_at(clicked_x, clicked_y));
522 for (NodeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
524 if(nodesmap[i]==active_item)
530 if(active_node==INVALID)
532 for (EdgeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
534 if(edgesmap[i]==active_item)
541 // return if the clicked object is neither an edge nor a node
542 if (active_edge == INVALID) return false;
544 //recolor activated item
547 *active_item << Gnome::Canvas::Properties::fill_color("red");
551 case GDK_BUTTON_RELEASE:
552 window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
555 //the cursor was not moved since pressing it
556 if( active_item == ( get_item_at (clicked_x, clicked_y) ) )
559 if(active_node!=INVALID)
561 (mytab.mapstorage).modified = true;
563 std::set<Graph::Edge> edges_to_delete;
565 for(OutEdgeIt e((mytab.mapstorage).graph,active_node);e!=INVALID;++e)
567 edges_to_delete.insert(e);
570 for(InEdgeIt e((mytab.mapstorage).graph,active_node);e!=INVALID;++e)
572 edges_to_delete.insert(e);
575 //deleting collected edges
576 for(std::set<Graph::Edge>::iterator
577 edge_set_it=edges_to_delete.begin();
578 edge_set_it!=edges_to_delete.end();
581 deleteItem(*edge_set_it);
583 deleteItem(active_node);
585 //a simple edge was chosen
586 else if (active_edge != INVALID)
588 deleteItem(active_edge);
591 //pointer was moved, deletion is cancelled
594 if(active_node!=INVALID)
596 *active_item << Gnome::Canvas::Properties::fill_color("blue");
598 else if (active_edge != INVALID)
600 *active_item << Gnome::Canvas::Properties::fill_color("green");
610 case GDK_MOTION_NOTIFY:
619 bool GraphDisplayerCanvas::mapEditEventHandler(GdkEvent* e)
621 if(actual_tool==MAP_EDIT)
625 case GDK_BUTTON_PRESS:
627 //for determine, whether it was an edge
628 Edge clicked_edge=INVALID;
629 //for determine, whether it was a node
630 Node clicked_node=INVALID;
632 window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
633 active_item=(get_item_at(clicked_x, clicked_y));
635 //find the activated item between text of nodes
636 for (NodeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
638 //at the same time only one can be active
639 if(nodetextmap[i]==active_item)
645 //if there was not, search for it between nodes
646 if(clicked_node==INVALID)
648 for (NodeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
650 //at the same time only one can be active
651 if(nodesmap[i]==active_item)
658 if(clicked_node==INVALID)
660 //find the activated item between texts
661 for (EdgeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
663 //at the same time only one can be active
664 if(edgetextmap[i]==active_item)
670 //if it was not between texts, search for it between edges
671 if(clicked_edge==INVALID)
673 for (EdgeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
675 //at the same time only one can be active
676 if((edgesmap[i]->getLine())==active_item)
684 //if it was really a node...
685 if(clicked_node!=INVALID)
687 // the id map is not editable
688 if (nodemap_to_edit == "label") return 0;
690 //and there is activated map
691 if(nodetextmap[clicked_node]->property_text().get_value()!="")
693 //activate the general variable for it
694 active_node=clicked_node;
697 Gtk::Dialog dialog("Edit value", true);
698 dialog.add_button(Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
699 dialog.add_button(Gtk::Stock::OK, Gtk::RESPONSE_ACCEPT);
700 Gtk::VBox* vbox = dialog.get_vbox();
701 Gtk::SpinButton spin(0.0, 4);
702 spin.set_increments(1.0, 10.0);
703 spin.set_range(-1000000.0, 1000000.0);
704 spin.set_numeric(true);
705 spin.set_value(atof(nodetextmap[active_node]->property_text().get_value().c_str()));
708 switch (dialog.run())
710 case Gtk::RESPONSE_NONE:
711 case Gtk::RESPONSE_CANCEL:
713 case Gtk::RESPONSE_ACCEPT:
714 double new_value = spin.get_value();
715 (*(mytab.mapstorage).nodemap_storage[nodemap_to_edit])[active_node] =
717 std::ostringstream ostr;
719 nodetextmap[active_node]->property_text().set_value(ostr.str());
720 //mapwin.updateNode(active_node);
721 //mapwin.updateNode(Node(INVALID));
722 propertyUpdate(Node(INVALID));
727 //if it was really an edge...
728 if(clicked_edge!=INVALID)
730 // the id map is not editable
731 if (edgemap_to_edit == "label") return 0;
733 //and there is activated map
734 if(edgetextmap[clicked_edge]->property_text().get_value()!="")
736 //activate the general variable for it
737 active_edge=clicked_edge;
740 Gtk::Dialog dialog("Edit value", true);
741 dialog.add_button(Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
742 dialog.add_button(Gtk::Stock::OK, Gtk::RESPONSE_ACCEPT);
743 Gtk::VBox* vbox = dialog.get_vbox();
744 Gtk::SpinButton spin(0.0, 4);
745 spin.set_increments(1.0, 10.0);
746 spin.set_range(-1000000.0, 1000000.0);
747 spin.set_numeric(true);
748 spin.set_value(atof(edgetextmap[active_edge]->property_text().get_value().c_str()));
751 switch (dialog.run())
753 case Gtk::RESPONSE_NONE:
754 case Gtk::RESPONSE_CANCEL:
756 case Gtk::RESPONSE_ACCEPT:
757 double new_value = spin.get_value();
758 (*(mytab.mapstorage).edgemap_storage[edgemap_to_edit])[active_edge] =
760 std::ostringstream ostr;
762 edgetextmap[active_edge]->property_text().set_value(
764 //mapwin.updateEdge(active_edge);
765 // mapwin.updateEdge(Edge(INVALID));
766 propertyUpdate(Edge(INVALID));
779 void GraphDisplayerCanvas::deleteItem(Node node_to_delete)
781 delete(nodetextmap[node_to_delete]);
782 delete(nodesmap[node_to_delete]);
783 (mytab.mapstorage).graph.erase(node_to_delete);
786 void GraphDisplayerCanvas::deleteItem(Edge edge_to_delete)
788 delete(edgetextmap[edge_to_delete]);
789 delete(edgesmap[edge_to_delete]);
790 (mytab.mapstorage).graph.erase(edge_to_delete);
793 void GraphDisplayerCanvas::textReposition(XY new_place)
795 new_place+=(XY(10,10));
796 edgetextmap[forming_edge]->property_x().set_value(new_place.x);
797 edgetextmap[forming_edge]->property_y().set_value(new_place.y);
800 void GraphDisplayerCanvas::toggleEdgeActivity(EdgeBase* active_bre, bool on)
804 if(forming_edge!=INVALID)
806 std::cerr << "ERROR!!!! Valid edge found!" << std::endl;
810 for (EdgeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
812 if(edgesmap[i]==active_bre)
821 if(forming_edge!=INVALID)
823 forming_edge=INVALID;
827 std::cerr << "ERROR!!!! Invalid edge found!" << std::endl;