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 if(actual_tool!=newtool)
19 actual_handler.disconnect();
25 GdkEvent * generated=new GdkEvent();
26 generated->type=GDK_BUTTON_RELEASE;
27 generated->button.button=3;
28 createEdgeEventHandler(generated);
32 //has to do the same thing as in the case of NODE_MAP_EDIT
35 GdkEvent * generated=new GdkEvent();
36 generated->type=GDK_KEY_PRESS;
37 ((GdkEventKey*)generated)->keyval=GDK_KP_Enter;
38 entryWidgetChangeHandler(generated);
57 actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::moveEventHandler), false);
61 actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::createNodeEventHandler), false);
65 actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::createEdgeEventHandler), false);
69 actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::eraserEventHandler), false);
74 actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::edgeMapEditEventHandler), false);
78 actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::nodeMapEditEventHandler), false);
87 int GraphDisplayerCanvas::getActualTool()
92 bool GraphDisplayerCanvas::moveEventHandler(GdkEvent* e)
96 case GDK_BUTTON_PRESS:
97 //we mark the location of the event to be able to calculate parameters of dragging
98 window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
100 active_item=(get_item_at(clicked_x, clicked_y));
102 for (NodeIt i(mapstorage.graph); i!=INVALID; ++i)
104 if(nodesmap[i]==active_item)
109 switch(e->button.button)
119 case GDK_BUTTON_RELEASE:
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)
128 mapstorage.modified = true;
129 mapstorage.coords.set(active_node, xy<double>(clicked_x, clicked_y));
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
137 window_to_world (e->motion.x, e->motion.y, new_x, new_y);
139 double dx=new_x-clicked_x;
140 double dy=new_y-clicked_y;
142 //repositioning node and its text
143 active_item->move(dx, dy);
144 nodetextmap[active_node]->move(dx, dy);
149 //all the edges connected to the moved point has to be redrawn
152 mapstorage.graph.firstOut(ei,active_node);
154 for(;ei!=INVALID;mapstorage.graph.nextOut(ei))
156 Gnome::Canvas::Points coos;
157 double x1, x2, y1, y2;
159 nodesmap[mapstorage.graph.source(ei)]->get_bounds(x1, y1, x2, y2);
160 coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
162 nodesmap[mapstorage.graph.target(ei)]->get_bounds(x1, y1, x2, y2);
163 coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
167 edgesmap[ei]->setPoints(coos);
171 edgesmap[ei]->setPoints(coos,true);
174 //reposition of edgetext
175 xy<double> text_pos=edgesmap[ei]->getArrowPos();
176 text_pos+=(xy<double>(10,10));
177 edgetextmap[ei]->property_x().set_value(text_pos.x);
178 edgetextmap[ei]->property_y().set_value(text_pos.y);
181 mapstorage.graph.firstIn(ei,active_node);
182 for(;ei!=INVALID;mapstorage.graph.nextIn(ei))
184 Gnome::Canvas::Points coos;
185 double x1, x2, y1, y2;
187 nodesmap[mapstorage.graph.source(ei)]->get_bounds(x1, y1, x2, y2);
188 coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
190 nodesmap[mapstorage.graph.target(ei)]->get_bounds(x1, y1, x2, y2);
191 coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
195 edgesmap[ei]->setPoints(coos);
199 edgesmap[ei]->setPoints(coos,true);
202 xy<double> text_pos=edgesmap[ei]->getArrowPos();
203 text_pos+=(xy<double>(10,10));
204 edgetextmap[ei]->property_x().set_value(text_pos.x);
205 edgetextmap[ei]->property_y().set_value(text_pos.y);
214 bool GraphDisplayerCanvas::createNodeEventHandler(GdkEvent* e)
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 case GDK_BUTTON_RELEASE:
230 mapstorage.modified = true;
234 active_node=mapstorage.graph.addNode();
236 //initiating values corresponding to new node in maps
238 window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
240 // update coordinates
241 mapstorage.coords.set(active_node, xy<double>(clicked_x, clicked_y));
244 (*mapstorage.nodemap_storage["id"])[active_node] =
245 mapstorage.graph.id(active_node);
247 // update all other maps
248 for (std::map<std::string, Graph::NodeMap<double>*>::const_iterator it =
249 mapstorage.nodemap_storage.begin(); it !=
250 mapstorage.nodemap_storage.end(); ++it)
252 if ((it->first != "id") &&
253 (it->first != "coordinates_x") &&
254 (it->first != "coordiantes_y"))
256 (*(it->second))[active_node] =
257 mapstorage.nodemap_default[it->first];
261 nodesmap[active_node]=new Gnome::Canvas::Ellipse(displayed_graph,
262 clicked_x-20, clicked_y-20, clicked_x+20, clicked_y+20);
263 active_item=(Gnome::Canvas::Item *)(nodesmap[active_node]);
264 *(nodesmap[active_node]) <<
265 Gnome::Canvas::Properties::fill_color("blue");
266 *(nodesmap[active_node]) <<
267 Gnome::Canvas::Properties::outline_color("black");
268 active_item->raise_to_top();
270 (nodesmap[active_node])->show();
272 nodetextmap[active_node]=new Gnome::Canvas::Text(displayed_graph,
273 clicked_x+node_property_defaults[N_RADIUS]+5,
274 clicked_y+node_property_defaults[N_RADIUS]+5, "");
275 nodetextmap[active_node]->property_fill_color().set_value("darkblue");
276 nodetextmap[active_node]->raise_to_top();
278 mapwin.updateNode(active_node);
292 bool GraphDisplayerCanvas::createEdgeEventHandler(GdkEvent* e)
296 case GDK_BUTTON_PRESS:
297 //in edge creation right button has special meaning
298 if(e->button.button!=3)
300 //there is not yet selected node
301 if(active_node==INVALID)
303 //we mark the location of the event to be able to calculate parameters of dragging
305 window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
307 active_item=(get_item_at(clicked_x, clicked_y));
309 for (NodeIt i(mapstorage.graph); i!=INVALID; ++i)
311 if(nodesmap[i]==active_item)
316 //the clicked item is really a node
317 if(active_node!=INVALID)
319 *(nodesmap[active_node]) << Gnome::Canvas::Properties::fill_color("red");
322 //clicked item was not a node. It could be e.g. edge.
328 //we only have to do sg. if the mouse button
329 // is pressed already once AND the click was
330 // on a node that was found in the set of
331 //nodes, and now we only search for the second
335 window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
336 target_item=(get_item_at(clicked_x, clicked_y));
337 Node target_node=INVALID;
338 for (NodeIt i(mapstorage.graph); i!=INVALID; ++i)
340 if(nodesmap[i]==target_item)
345 //the clicked item is a node, the edge can be drawn
346 if(target_node!=INVALID)
348 if(target_node!=active_node)
350 mapstorage.modified = true;
352 *(nodesmap[target_node]) <<
353 Gnome::Canvas::Properties::fill_color("red");
356 active_edge=mapstorage.graph.addEdge(active_node,
360 (*mapstorage.edgemap_storage["id"])[active_edge] =
361 mapstorage.graph.id(active_edge);
363 // update all other maps
364 for (std::map<std::string,
365 Graph::EdgeMap<double>*>::const_iterator it =
366 mapstorage.edgemap_storage.begin(); it !=
367 mapstorage.edgemap_storage.end(); ++it)
369 if (it->first != "id")
371 (*(it->second))[active_edge] =
372 mapstorage.edgemap_default[it->first];
376 //calculating coordinates of new edge
377 Gnome::Canvas::Points coos;
378 double x1, x2, y1, y2;
380 active_item->get_bounds(x1, y1, x2, y2);
381 coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
383 target_item->get_bounds(x1, y1, x2, y2);
384 coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
387 edgesmap[active_edge]=new BrokenEdge(displayed_graph, coos,
389 *(edgesmap[active_edge]) <<
390 Gnome::Canvas::Properties::fill_color("green");
391 edgesmap[active_edge]->property_width_pixels().set_value(10);
393 edgesmap[active_edge]->lower_to_bottom();
395 //initializing edge-text as well, to empty string
396 xy<double> text_pos=edgesmap[active_edge]->getArrowPos();
397 text_pos+=(xy<double>(10,10));
399 edgetextmap[active_edge]=new Gnome::Canvas::Text(displayed_graph,
400 text_pos.x, text_pos.y, "");
401 edgetextmap[active_edge]->property_fill_color().set_value(
403 edgetextmap[active_edge]->raise_to_top();
405 //updating its properties
406 mapwin.updateEdge(active_edge);
411 std::cerr << "Loop edge is not yet implemented!" << std::endl;
414 //clicked item was not a node. it could be an e.g. edge. we do not
415 //deal with it furthermore.
423 case GDK_BUTTON_RELEASE:
425 //we clear settings in two cases
426 //1: the edge is ready (target_item has valid value)
427 //2: the edge creation is cancelled with right button
428 if((target_item)||(e->button.button==3))
432 *active_item << Gnome::Canvas::Properties::fill_color("blue");
437 *target_item << Gnome::Canvas::Properties::fill_color("blue");
450 bool GraphDisplayerCanvas::eraserEventHandler(GdkEvent* e)
454 case GDK_BUTTON_PRESS:
455 //finding the clicked items
456 window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
457 active_item=(get_item_at(clicked_x, clicked_y));
461 for (NodeIt i(mapstorage.graph); i!=INVALID; ++i)
463 if(nodesmap[i]==active_item)
469 if(active_node==INVALID)
471 for (EdgeIt i(mapstorage.graph); i!=INVALID; ++i)
473 if(edgesmap[i]==active_item)
480 //recolor activated item
483 *active_item << Gnome::Canvas::Properties::fill_color("red");
487 case GDK_BUTTON_RELEASE:
488 window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
491 //the cursor was not moved since pressing it
492 if( active_item == ( get_item_at (clicked_x, clicked_y) ) )
495 if(active_node!=INVALID)
497 mapstorage.modified = true;
499 //collecting edges to delete
501 std::set<Graph::Edge> edges_to_delete;
503 mapstorage.graph.firstOut(e,active_node);
504 for(;e!=INVALID;mapstorage.graph.nextOut(e))
506 edges_to_delete.insert(e);
509 mapstorage.graph.firstIn(e,active_node);
510 for(;e!=INVALID;mapstorage.graph.nextIn(e))
512 edges_to_delete.insert(e);
515 //deleting collected edges
516 for(std::set<Graph::Edge>::iterator edge_set_it=edges_to_delete.begin();edge_set_it!=edges_to_delete.end();edge_set_it++)
518 deleteItem(*edge_set_it);
520 deleteItem(active_node);
522 //a simple edge was chosen
525 deleteItem(active_edge);
528 //pointer was moved, deletion is cancelled
531 if(active_node!=INVALID)
533 *active_item << Gnome::Canvas::Properties::fill_color("blue");
537 *active_item << Gnome::Canvas::Properties::fill_color("green");
547 case GDK_MOTION_NOTIFY:
556 bool GraphDisplayerCanvas::edgeMapEditEventHandler(GdkEvent* e)
558 if(actual_tool==EDGE_MAP_EDIT)
563 //for Escape or Enter hide the displayed widget
565 nodeMapEditEventHandler(e);
568 case GDK_BUTTON_PRESS:
569 //If the click happened on an edge we place the entrywidget there and fill in the value of the activated map at that edge.
571 //for determine, whether it was an edge
572 Edge clicked_edge=INVALID;
574 //find the activated item between texts
575 active_item=(get_item_at(e->button.x, e->button.y));
576 for (EdgeIt i(mapstorage.graph); i!=INVALID; ++i)
578 if(edgetextmap[i]==active_item)
584 //if it was not between texts, search for it between edges
585 if(clicked_edge==INVALID)
587 window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
588 active_item=(get_item_at(clicked_x, clicked_y));
590 for (EdgeIt i(mapstorage.graph); i!=INVALID; ++i)
592 //at the same time only one can be active
593 if((edgesmap[i]==active_item)||(edgetextmap[i]==active_item))
599 //if it was really an edge...
600 if(clicked_edge!=INVALID)
602 // the id map is not editable
603 if (nodemap_to_edit == "id") return 0;
604 //If there is already edited edge, it has to be saved first
605 if(entrywidget.is_visible())
607 GdkEvent * generated=new GdkEvent();
608 generated->type=GDK_KEY_PRESS;
609 ((GdkEventKey*)generated)->keyval=GDK_KP_Enter;
610 entryWidgetChangeHandler(generated);
612 //If the previous value could be saved, we can go further, otherwise not
613 if(!entrywidget.is_visible())
615 //and there is activated map
616 if(edgetextmap[clicked_edge]->property_text().get_value()!="")
618 //activate the general variable for it
619 active_edge=clicked_edge;
620 //delete visible widget if there is
621 if(canvasentrywidget)
623 delete(canvasentrywidget);
626 //initialize the entry
629 //fill in the correct value
630 entrywidget.set_text(edgetextmap[active_edge]->property_text().get_value());
632 //replace and resize the entry to the activated edge and put it in a Canvas::Widget to be able to display it on gdc
633 xy<double> entry_coos;
634 entry_coos.x=(edgetextmap[active_edge])->property_x().get_value();
635 entry_coos.x-=edgetextmap[active_edge]->property_text_width().get_value()/2;
636 entry_coos.y=(edgetextmap[active_edge])->property_y().get_value();
637 entry_coos.y-=edgetextmap[active_edge]->property_text_height().get_value()*1.5/2;
638 canvasentrywidget=new Gnome::Canvas::Widget(displayed_graph, entry_coos.x, entry_coos.y, entrywidget);
639 canvasentrywidget->property_width().set_value(edgetextmap[active_edge]->property_text_width().get_value()*4);
640 canvasentrywidget->property_height().set_value(edgetextmap[active_edge]->property_text_height().get_value()*1.5);
642 //setting the focus to newly created widget
643 parentwin->set_focus(entrywidget);
644 parentwin->activate_focus();
648 //if it was not an edge...
651 //In this case the click did not happen on an edge
652 //if there is visible entry we save the value in it
653 //we pretend like an Enter was presse din the Entry widget
654 GdkEvent * generated=new GdkEvent();
655 generated->type=GDK_KEY_PRESS;
656 ((GdkEventKey*)generated)->keyval=GDK_KP_Enter;
657 entryWidgetChangeHandler(generated);
668 bool GraphDisplayerCanvas::nodeMapEditEventHandler(GdkEvent* e)
670 if(actual_tool==NODE_MAP_EDIT)
675 //for Escape or Enter hide the displayed widget
677 switch(((GdkEventKey*)e)->keyval)
692 case GDK_BUTTON_PRESS:
693 //If the click happened on an edge we place the entrywidget there and fill in the value of the activated map at that edge.
695 //for determine, whether it was a node
696 Node clicked_node=INVALID;
698 //find the activated item between texts
699 active_item=(get_item_at(e->button.x, e->button.y));
700 for (NodeIt i(mapstorage.graph); i!=INVALID; ++i)
702 //at the same time only one can be active
703 if(nodetextmap[i]==active_item)
709 //if there was not, search for it between nodes
710 if(clicked_node==INVALID)
712 window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
713 active_item=(get_item_at(clicked_x, clicked_y));
715 for (NodeIt i(mapstorage.graph); i!=INVALID; ++i)
717 //at the same time only one can be active
718 if(nodesmap[i]==active_item)
724 //if it was really an edge...
725 if(clicked_node!=INVALID)
727 // the id map is not editable
728 if (nodemap_to_edit == "id") return 0;
729 //If there is already edited edge, it has to be saved first
730 if(entrywidget.is_visible())
732 GdkEvent * generated=new GdkEvent();
733 generated->type=GDK_KEY_PRESS;
734 ((GdkEventKey*)generated)->keyval=GDK_KP_Enter;
735 entryWidgetChangeHandler(generated);
737 //If the previous value could be saved, we can go further, otherwise not
738 if(!entrywidget.is_visible())
740 //and there is activated map
741 if(nodetextmap[clicked_node]->property_text().get_value()!="")
743 //activate the general variable for it
744 active_node=clicked_node;
745 //delete visible widget if there is
746 if(canvasentrywidget)
748 delete(canvasentrywidget);
751 //initialize the entry
754 //fill in the correct value
755 entrywidget.set_text(nodetextmap[active_node]->property_text().get_value());
757 //replace and resize the entry to the activated node and put it in a Canvas::Widget to be able to display it on gdc
758 xy<double> entry_coos;
759 entry_coos.x=(nodetextmap[active_node])->property_x().get_value();
760 entry_coos.x-=nodetextmap[active_node]->property_text_width().get_value()/2;
761 entry_coos.y=(nodetextmap[active_node])->property_y().get_value();
762 entry_coos.y-=nodetextmap[active_node]->property_text_height().get_value()*1.5/2;
763 canvasentrywidget=new Gnome::Canvas::Widget(displayed_graph, entry_coos.x, entry_coos.y, entrywidget);
764 canvasentrywidget->property_width().set_value(nodetextmap[active_node]->property_text_width().get_value()*4);
765 canvasentrywidget->property_height().set_value(nodetextmap[active_node]->property_text_height().get_value()*1.5);
769 //if it was not an edge...
772 //In this case the click did not happen on an edge
773 //if there is visible entry we save the value in it
774 //we pretend like an Enter was presse din the Entry widget
775 GdkEvent * generated=new GdkEvent();
776 generated->type=GDK_KEY_PRESS;
777 ((GdkEventKey*)generated)->keyval=GDK_KP_Enter;
778 entryWidgetChangeHandler(generated);
789 bool GraphDisplayerCanvas::entryWidgetChangeHandler(GdkEvent* e)
791 if(entrywidget.is_visible())
793 if(e->type==GDK_KEY_PRESS)
795 switch(((GdkEventKey*)e)->keyval)
803 //these variables check whether the text in the entry is valid
804 bool valid_double=true;
807 //getting the value from the entry and converting it to double
808 Glib::ustring mapvalue_str = entrywidget.get_text();
810 char * mapvalue_ch=new char [mapvalue_str.length()];
811 for(int i=0;i<(int)(mapvalue_str.length());i++)
813 if(((mapvalue_str[i]<'0')||(mapvalue_str[i]>'9'))&&(mapvalue_str[i]!='.'))
819 if(mapvalue_str[i]=='.')
824 mapvalue_ch[i]=mapvalue_str[i];
827 //if the text in the entry was correct
828 if((point_num<=1)&&(valid_double))
830 double mapvalue_d=atof(mapvalue_ch);
832 //reconvert the double to string for the correct format
833 std::ostringstream ostr;
836 //save the value to the correct place
840 edgetextmap[active_edge]->property_text().set_value(ostr.str());
841 (*(mapstorage.edgemap_storage)[edgemap_to_edit])[active_edge]=mapvalue_d;
842 mapwin.updateEdge(active_edge);
845 nodetextmap[active_node]->property_text().set_value(ostr.str());
846 (*(mapstorage.nodemap_storage)[nodemap_to_edit])[active_node]=mapvalue_d;
847 mapwin.updateNode(active_node);
854 //the text in the entry was not correct for a double
857 std::cerr << "ERROR: only handling of double values is implemented yet!" << std::endl;
870 void GraphDisplayerCanvas::deleteItem(Node node_to_delete)
872 delete(nodetextmap[node_to_delete]);
873 delete(nodesmap[node_to_delete]);
874 mapstorage.graph.erase(node_to_delete);
877 void GraphDisplayerCanvas::deleteItem(Edge edge_to_delete)
879 delete(edgetextmap[edge_to_delete]);
880 delete(edgesmap[edge_to_delete]);
881 mapstorage.graph.erase(edge_to_delete);
884 void GraphDisplayerCanvas::textReposition(xy<double> new_place)
886 new_place+=(xy<double>(10,10));
887 edgetextmap[forming_edge]->property_x().set_value(new_place.x);
888 edgetextmap[forming_edge]->property_y().set_value(new_place.y);
891 void GraphDisplayerCanvas::toggleEdgeActivity(BrokenEdge* active_bre, bool on)
895 if(forming_edge!=INVALID)
897 std::cerr << "ERROR!!!! Valid edge found!" << std::endl;
901 for (EdgeIt i(mapstorage.graph); i!=INVALID; ++i)
903 if(edgesmap[i]==active_bre)
912 if(forming_edge!=INVALID)
914 forming_edge=INVALID;
918 std::cerr << "ERROR!!!! Invalid edge found!" << std::endl;
924 int GraphDisplayerCanvas::addNewEdgeMap(double default_value, std::string mapname)
927 Graph::EdgeMap<double> * emptr=new Graph::EdgeMap<double> (mapstorage.graph, default_value);
929 //if addition was not successful addEdgeMap returns one.
930 //cause can be that there is already a map named like the new one
931 if(mapstorage.addEdgeMap(mapname,emptr, default_value))
937 //add it to the list of the displayable maps
938 mapwin.registerNewEdgeMap(mapname);
941 changeEdgeText(mapname);
946 int GraphDisplayerCanvas::addNewNodeMap(double default_value, std::string mapname)
949 Graph::NodeMap<double> * emptr=new Graph::NodeMap<double> (mapstorage.graph,default_value);
951 //if addition was not successful addNodeMap returns one.
952 //cause can be that there is already a map named like the new one
953 if(mapstorage.addNodeMap(mapname,emptr, default_value))
958 //add it to the list of the displayable maps
959 mapwin.registerNewNodeMap(mapname);
962 changeNodeText(mapname);