Editors are based.
1 #include <graph_displayer_canvas.h>
2 #include <broken_edge.h>
6 bool GraphDisplayerCanvas::on_expose_event(GdkEventExpose *event)
8 Gnome::Canvas::CanvasAA::on_expose_event(event);
14 void GraphDisplayerCanvas::changeEditorialTool(int newtool)
16 actual_handler.disconnect();
18 if(actual_tool==CREATE_EDGE)
20 GdkEvent * generated=new GdkEvent();
21 generated->type=GDK_BUTTON_RELEASE;
22 generated->button.button=3;
23 createEdgeEventHandler(generated);
31 actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::moveEventHandler), false);
35 actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::createNodeEventHandler), false);
39 actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::createEdgeEventHandler), false);
43 actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::eraserEventHandler), false);
47 actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::edgeMapEditEventHandler), false);
51 actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::nodeMapEditEventHandler), false);
59 int GraphDisplayerCanvas::getActualTool()
64 bool GraphDisplayerCanvas::moveEventHandler(GdkEvent* e)
68 case GDK_BUTTON_PRESS:
69 //we mark the location of the event to be able to calculate parameters of dragging
70 window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
72 active_item=(get_item_at(clicked_x, clicked_y));
74 for (NodeIt i(g); i!=INVALID; ++i)
76 if(nodesmap[i]==active_item)
81 switch(e->button.button)
91 case GDK_BUTTON_RELEASE:
96 case GDK_MOTION_NOTIFY:
97 //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
98 if(active_node!=INVALID)
100 //new coordinates will be the old values,
101 //because the item will be moved to the
102 //new coordinate therefore the new movement
103 //has to be calculated from here
107 window_to_world (e->motion.x, e->motion.y, new_x, new_y);
109 double dx=new_x-clicked_x;
110 double dy=new_y-clicked_y;
112 //repositioning node and its text
113 active_item->move(dx, dy);
114 nodetextmap[active_node]->move(dx, dy);
119 //all the edges connected to the moved point has to be redrawn
122 g.firstOut(ei,active_node);
124 for(;ei!=INVALID;g.nextOut(ei))
126 Gnome::Canvas::Points coos;
127 double x1, x2, y1, y2;
129 nodesmap[g.source(ei)]->get_bounds(x1, y1, x2, y2);
130 coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
132 nodesmap[g.target(ei)]->get_bounds(x1, y1, x2, y2);
133 coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
137 edgesmap[ei]->setPoints(coos);
141 edgesmap[ei]->setPoints(coos,true);
144 //reposition of edgetext
145 xy<double> text_pos=edgesmap[ei]->getArrowPos();
146 text_pos+=(xy<double>(10,10));
147 edgetextmap[ei]->property_x().set_value(text_pos.x);
148 edgetextmap[ei]->property_y().set_value(text_pos.y);
151 g.firstIn(ei,active_node);
152 for(;ei!=INVALID;g.nextIn(ei))
154 Gnome::Canvas::Points coos;
155 double x1, x2, y1, y2;
157 nodesmap[g.source(ei)]->get_bounds(x1, y1, x2, y2);
158 coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
160 nodesmap[g.target(ei)]->get_bounds(x1, y1, x2, y2);
161 coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
165 edgesmap[ei]->setPoints(coos);
169 edgesmap[ei]->setPoints(coos,true);
172 xy<double> text_pos=edgesmap[ei]->getArrowPos();
173 text_pos+=(xy<double>(10,10));
174 edgetextmap[ei]->property_x().set_value(text_pos.x);
175 edgetextmap[ei]->property_y().set_value(text_pos.y);
184 bool GraphDisplayerCanvas::createNodeEventHandler(GdkEvent* e)
189 //draw the new node in red at the clicked place
190 case GDK_2BUTTON_PRESS:
191 std::cout << "double click" << std::endl;
193 case GDK_BUTTON_PRESS:
196 active_node=NodeIt(g,g.addNode());
198 //initiating values corresponding to new node in maps
200 window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
203 target_item=get_item_at(clicked_x, clicked_y);
205 nodesmap[active_node]=new Gnome::Canvas::Ellipse(displayed_graph, clicked_x-20, clicked_y-20, clicked_x+20, clicked_y+20);
206 active_item=(Gnome::Canvas::Item *)(nodesmap[active_node]);
207 *(nodesmap[active_node]) << Gnome::Canvas::Properties::fill_color("red");
208 *(nodesmap[active_node]) << Gnome::Canvas::Properties::outline_color("black");
209 (nodesmap[active_node])->show();
211 nodetextmap[active_node]=new Gnome::Canvas::Text(displayed_graph, clicked_x+node_property_defaults[N_RADIUS]+5, clicked_y+node_property_defaults[N_RADIUS]+5, "");
212 nodetextmap[active_node]->property_fill_color().set_value("darkblue");
214 mapwin->updateNode(active_node);
219 case GDK_MOTION_NOTIFY:
221 GdkEvent * generated=new GdkEvent();
222 generated->motion.x=e->motion.x;
223 generated->motion.y=e->motion.y;
224 generated->type=GDK_MOTION_NOTIFY;
225 moveEventHandler(generated);
229 //finalize the new node
230 case GDK_BUTTON_RELEASE:
234 //Its appropriate color is given by update.
235 //*active_item << Gnome::Canvas::Properties::fill_color("blue");
239 //In this case the given color has to be overwritten, because the noe covers an other item.
240 *active_item << Gnome::Canvas::Properties::fill_color("lightblue");
252 bool GraphDisplayerCanvas::createEdgeEventHandler(GdkEvent* e)
256 case GDK_BUTTON_PRESS:
257 //in edge creation right button has special meaning
258 if(e->button.button!=3)
260 //there is not yet selected node
261 if(active_node==INVALID)
263 //we mark the location of the event to be able to calculate parameters of dragging
265 window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
267 active_item=(get_item_at(clicked_x, clicked_y));
269 for (NodeIt i(g); i!=INVALID; ++i)
271 if(nodesmap[i]==active_item)
276 //the clicked item is really a node
277 if(active_node!=INVALID)
279 *(nodesmap[active_node]) << Gnome::Canvas::Properties::fill_color("red");
282 //clicked item was not a node. It could be e.g. edge.
288 //we only have to do sg. if the mouse button
289 // is pressed already once AND the click was
290 // on a node that was found in the set of
291 //nodes, and now we only search for the second
295 window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
296 target_item=(get_item_at(clicked_x, clicked_y));
297 Graph::NodeIt target_node=INVALID;
298 for (NodeIt i(g); i!=INVALID; ++i)
300 if(nodesmap[i]==target_item)
305 //the clicked item is a node, the edge can be drawn
306 if(target_node!=INVALID)
308 if(target_node!=active_node)
310 *(nodesmap[target_node]) << Gnome::Canvas::Properties::fill_color("red");
313 active_edge=EdgeIt(g,g.addEdge(active_node, target_node));
315 //initiating values corresponding to new edge in maps
316 mapstorage.initMapsForEdge(active_edge);
318 //calculating coordinates of new edge
319 Gnome::Canvas::Points coos;
320 double x1, x2, y1, y2;
322 active_item->get_bounds(x1, y1, x2, y2);
323 coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
325 target_item->get_bounds(x1, y1, x2, y2);
326 coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
329 edgesmap[active_edge]=new BrokenEdge(displayed_graph, coos, *this);
330 *(edgesmap[active_edge]) << Gnome::Canvas::Properties::fill_color("green");
331 edgesmap[active_edge]->property_width_pixels().set_value(10);
333 //redraw nodes to blank terminations of the new edge
334 target_item->raise_to_top();
335 active_item->raise_to_top();
337 //initializing edge-text as well, to empty string
338 xy<double> text_pos=edgesmap[active_edge]->getArrowPos();
339 text_pos+=(xy<double>(10,10));
341 edgetextmap[active_edge]=new Gnome::Canvas::Text(displayed_graph, text_pos.x, text_pos.y, "");
342 edgetextmap[active_edge]->property_fill_color().set_value("darkgreen");
344 //updating its properties
345 mapwin->updateEdge(active_edge);
350 std::cout << "Loop edge is not yet implemented!" << std::endl;
353 //clicked item was not a node. it could be an e.g. edge. we do not deal with it furthermore.
361 case GDK_BUTTON_RELEASE:
363 //we clear settings in two cases
364 //1: the edge is ready (target_item has valid value)
365 //2: the edge creation is cancelled with right button
366 if((target_item)||(e->button.button==3))
370 *active_item << Gnome::Canvas::Properties::fill_color("blue");
375 *target_item << Gnome::Canvas::Properties::fill_color("blue");
388 bool GraphDisplayerCanvas::eraserEventHandler(GdkEvent* e)
392 case GDK_BUTTON_PRESS:
393 window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
394 active_item=(get_item_at(clicked_x, clicked_y));
397 for (NodeIt i(g); i!=INVALID; ++i)
399 if(nodesmap[i]==active_item)
404 if(active_node==INVALID)
406 for (EdgeIt i(g); i!=INVALID; ++i)
408 if(edgesmap[i]==active_item)
416 *active_item << Gnome::Canvas::Properties::fill_color("red");
420 case GDK_BUTTON_RELEASE:
421 window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
424 if( active_item == ( get_item_at (clicked_x, clicked_y) ) )
426 if(active_node!=INVALID)
429 //collecting edges to delete
431 std::set<Graph::Edge> edges_to_delete;
433 g.firstOut(e,active_node);
434 for(;e!=INVALID;g.nextOut(e))
436 edges_to_delete.insert(e);
439 g.firstIn(e,active_node);
440 for(;e!=INVALID;g.nextIn(e))
442 edges_to_delete.insert(e);
445 //deleting collected edges
446 for(std::set<Graph::Edge>::iterator edge_set_it=edges_to_delete.begin();edge_set_it!=edges_to_delete.end();edge_set_it++)
448 deleteItem(*edge_set_it);
450 deleteItem(active_node);
452 //a simple edge was chosen
455 deleteItem(active_edge);
458 //pointer was moved, deletion is cancelled
461 if(active_node!=INVALID)
463 *active_item << Gnome::Canvas::Properties::fill_color("blue");
467 *active_item << Gnome::Canvas::Properties::fill_color("green");
477 case GDK_MOTION_NOTIFY:
486 bool GraphDisplayerCanvas::edgeMapEditEventHandler(GdkEvent* e)
490 case GDK_BUTTON_PRESS:
491 window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
492 active_item=(get_item_at(clicked_x, clicked_y));
494 for (EdgeIt i(g); i!=INVALID; ++i)
496 if(edgesmap[i]==active_item)
501 if(active_edge!=INVALID)
503 if(canvasentrywidget)
505 delete(canvasentrywidget);
508 entrywidget.set_text("Hello!");
509 // canvasentrywidget=new Gnome::Canvas::Widget(displayed_graph, clicked_x, clicked_y,entrywidget);
510 canvasentrywidget=new Gnome::Canvas::Widget(displayed_graph, e->button.x, e->button.y, entrywidget);
511 canvasentrywidget->property_width().set_value(70);
512 canvasentrywidget->property_height().set_value(50);
513 canvasentrywidget->show();
514 *(edgesmap[active_edge]) << Gnome::Canvas::Properties::fill_color("red");
516 active_item=NULL; // !!!!!!!!!!!!!!!!!!!!!!!!!!!
517 active_edge=INVALID; // !!!!!!!!!!!!!!!!!!!!!!!!!!!
525 bool GraphDisplayerCanvas::nodeMapEditEventHandler(GdkEvent* e)
531 void GraphDisplayerCanvas::deleteItem(NodeIt node_to_delete)
533 delete(nodetextmap[node_to_delete]);
534 delete(nodesmap[node_to_delete]);
535 g.erase(node_to_delete);
538 void GraphDisplayerCanvas::deleteItem(EdgeIt edge_to_delete)
540 delete(edgetextmap[edge_to_delete]);
541 delete(edgesmap[edge_to_delete]);
542 g.erase(edge_to_delete);
545 void GraphDisplayerCanvas::deleteItem(Graph::Edge edge_to_delete)
547 delete(edgetextmap[edge_to_delete]);
548 delete(edgesmap[edge_to_delete]);
549 g.erase(edge_to_delete);
552 void GraphDisplayerCanvas::textReposition(xy<double> new_place)
554 new_place+=(xy<double>(10,10));
555 edgetextmap[active_edge]->property_x().set_value(new_place.x);
556 edgetextmap[active_edge]->property_y().set_value(new_place.y);
559 void GraphDisplayerCanvas::toggleEdgeActivity(BrokenEdge* active_bre, bool on)
563 if(active_edge!=INVALID)
565 std::cout << "ERROR!!!! Valid edge found!" << std::endl;
569 for (EdgeIt i(g); i!=INVALID; ++i)
571 if(edgesmap[i]==active_bre)
580 if(active_edge!=INVALID)
586 std::cout << "ERROR!!!! Invalid edge found!" << std::endl;