ladanyi@53: #include "graph_displayer_canvas.h"
alpar@59: #include <cmath>
hegyi@27: 
hegyi@27: 
hegyi@27: bool GraphDisplayerCanvas::on_expose_event(GdkEventExpose *event)
hegyi@27: {
hegyi@27:   Gnome::Canvas::CanvasAA::on_expose_event(event);
hegyi@27:   //usleep(10000);
hegyi@27:   //rezoom();
hegyi@27:   return true;
hegyi@27: }
hegyi@27: 
hegyi@27: void GraphDisplayerCanvas::changeEditorialTool(int newtool)
hegyi@27: {
hegyi@34:   if(actual_tool!=newtool)
hegyi@34:     {
hegyi@27: 
hegyi@34:       actual_handler.disconnect();
hegyi@27: 
hegyi@34:       switch(actual_tool)
hegyi@34: 	{
hegyi@34: 	case CREATE_EDGE:
hegyi@34: 	  {
hegyi@34: 	    GdkEvent * generated=new GdkEvent();
hegyi@34: 	    generated->type=GDK_BUTTON_RELEASE;
hegyi@34: 	    generated->button.button=3;
hegyi@34: 	    createEdgeEventHandler(generated);      
hegyi@34: 	    break;
hegyi@34: 	  }
hegyi@34: 	case EDGE_MAP_EDIT:
hegyi@35: 	  //has to do the same thing as in the case of NODE_MAP_EDIT
hegyi@35: 	case NODE_MAP_EDIT:
hegyi@35: 	  {
hegyi@35: 	    break;
hegyi@35: 	  }
hegyi@34: 	default:
hegyi@34: 	  break;
hegyi@34: 	}
hegyi@27: 
hegyi@34:       active_item=NULL; 
hegyi@34:       target_item=NULL; 
hegyi@34:       active_edge=INVALID;	
hegyi@34:       active_node=INVALID;	
hegyi@33: 
hegyi@27: 
hegyi@34:       actual_tool=newtool;
hegyi@34:   
hegyi@34:       switch(newtool)
hegyi@34: 	{
hegyi@34: 	case MOVE:
hegyi@34: 	  actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::moveEventHandler), false);
hegyi@34: 	  break;
hegyi@27: 
hegyi@34: 	case CREATE_NODE:
hegyi@34: 	  actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::createNodeEventHandler), false);
hegyi@34: 	  break;
hegyi@27: 
hegyi@34: 	case CREATE_EDGE:
hegyi@34: 	  actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::createEdgeEventHandler), false);
hegyi@34: 	  break;
hegyi@27: 
hegyi@34: 	case ERASER:
hegyi@34: 	  actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::eraserEventHandler), false);
hegyi@34: 	  break;
hegyi@32: 
hegyi@34: 	case EDGE_MAP_EDIT:
hegyi@34: 	  grab_focus();
hegyi@34: 	  actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::edgeMapEditEventHandler), false);
hegyi@34: 	  break;
hegyi@32: 
hegyi@34: 	case NODE_MAP_EDIT:
hegyi@34: 	  actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::nodeMapEditEventHandler), false);
hegyi@34: 	  break;
hegyi@34: 
hegyi@34: 	default:
hegyi@34: 	  break;
hegyi@34: 	}
hegyi@27:     }
hegyi@27: }
hegyi@27: 
hegyi@30: int GraphDisplayerCanvas::getActualTool()
hegyi@27: {
hegyi@27:   return actual_tool;
hegyi@27: }
hegyi@27: 
hegyi@30: bool GraphDisplayerCanvas::moveEventHandler(GdkEvent* e)
hegyi@27: {
ladanyi@70:   static Gnome::Canvas::Text *coord_text = 0;
hegyi@27:   switch(e->type)
hegyi@27:   {
hegyi@27:     case GDK_BUTTON_PRESS:
hegyi@27:       //we mark the location of the event to be able to calculate parameters of dragging
hegyi@31:       window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
hegyi@31: 
hegyi@31:       active_item=(get_item_at(clicked_x, clicked_y));
hegyi@27:       active_node=INVALID;
hegyi@96:       for (NodeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
hegyi@27: 	{
hegyi@27: 	  if(nodesmap[i]==active_item)
hegyi@27: 	    {
hegyi@27: 	      active_node=i;
hegyi@27: 	    }
hegyi@27: 	}
hegyi@27:       switch(e->button.button)
hegyi@27: 	{
hegyi@27: 	case 3:      
hegyi@27: 	  isbutton=3;
hegyi@27: 	  break;
hegyi@27: 	default:
hegyi@27: 	  isbutton=1;
hegyi@27: 	  break;
hegyi@27: 	}
hegyi@27:       break;
hegyi@27:     case GDK_BUTTON_RELEASE:
ladanyi@70:       if (coord_text)
ladanyi@70:       {
ladanyi@70:         delete coord_text;
ladanyi@70:         coord_text = 0;
ladanyi@70:       }
hegyi@27:       isbutton=0;
hegyi@27:       active_item=NULL;
hegyi@27:       active_node=INVALID;
hegyi@27:       break;
hegyi@27:     case GDK_MOTION_NOTIFY:
hegyi@27:       //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
hegyi@27:       if(active_node!=INVALID)
hegyi@27:       {
hegyi@96:         (mytab.mapstorage).modified = true;
ladanyi@70: 
hegyi@27: 	//new coordinates will be the old values,
hegyi@27: 	//because the item will be moved to the
hegyi@27: 	//new coordinate therefore the new movement
hegyi@27: 	//has to be calculated from here
hegyi@27: 
hegyi@31: 	double new_x, new_y;
hegyi@31: 
hegyi@31: 	window_to_world (e->motion.x, e->motion.y, new_x, new_y);
hegyi@31: 
hegyi@31:         double dx=new_x-clicked_x;
hegyi@31:         double dy=new_y-clicked_y;
hegyi@27: 
hegyi@28: 	//repositioning node and its text
hegyi@27:         active_item->move(dx, dy);
hegyi@28: 	nodetextmap[active_node]->move(dx, dy);
hegyi@27: 
ladanyi@70:         // the new coordinates of the centre of the node 
hegyi@96:         double coord_x = new_x - (clicked_x - (mytab.mapstorage).coords[active_node].x);
hegyi@96:         double coord_y = new_y - (clicked_y - (mytab.mapstorage).coords[active_node].y);
ladanyi@70: 
ladanyi@98:         // write back the new coordinates to the coords map
ladanyi@98:         (mytab.mapstorage).coords.set(active_node, xy<double>(coord_x, coord_y));
ladanyi@98: 
hegyi@31:         clicked_x=new_x;
hegyi@31:         clicked_y=new_y;
hegyi@27: 
ladanyi@70:         // reposition the coordinates text
ladanyi@70:         std::ostringstream ostr;
ladanyi@70:         ostr << "(" <<
hegyi@96:           (mytab.mapstorage).coords[active_node].x << ", " <<
hegyi@96:           (mytab.mapstorage).coords[active_node].y << ")";
ladanyi@72:         double radius =
ladanyi@72:           (nodesmap[active_node]->property_x2().get_value() -
ladanyi@72:           nodesmap[active_node]->property_x1().get_value()) / 2.0;
ladanyi@70:         if (coord_text)
ladanyi@70:         {
ladanyi@70:           coord_text->property_text().set_value(ostr.str());
hegyi@96:           coord_text->property_x().set_value((mytab.mapstorage).coords[active_node].x +
ladanyi@72:               radius);
hegyi@96:           coord_text->property_y().set_value((mytab.mapstorage).coords[active_node].y -
ladanyi@72:               radius);
ladanyi@70:         }
ladanyi@70:         else
ladanyi@70:         {
ladanyi@70:           coord_text = new Gnome::Canvas::Text(
ladanyi@70:               displayed_graph,
hegyi@96:               (mytab.mapstorage).coords[active_node].x + radius,
hegyi@96:               (mytab.mapstorage).coords[active_node].y - radius,
ladanyi@70:               ostr.str());
ladanyi@70:           coord_text->property_fill_color().set_value("black");
ladanyi@72:           coord_text->property_anchor().set_value(Gtk::ANCHOR_SOUTH_WEST);
ladanyi@70:         }
ladanyi@70: 
ladanyi@70: 	//all the edges connected to the moved point has to be redrawn
hegyi@96:         for(OutEdgeIt ei((mytab.mapstorage).graph,active_node);ei!=INVALID;++ei)
hegyi@27:         {
ladanyi@98:             XY moved_node_1(coord_x - dx, coord_y - dy);
ladanyi@98:             XY moved_node_2(coord_x, coord_y);
ladanyi@98:             Node target = mytab.mapstorage.graph.target(ei);
ladanyi@98:             XY fix_node(mytab.mapstorage.coords[target].x,
ladanyi@98:                         mytab.mapstorage.coords[target].y);
ladanyi@98:             XY old_arrow_pos(mytab.mapstorage.arrow_pos[ei]);
hegyi@27: 
ladanyi@98:             XY arrow_pos;
ladanyi@98: 	    if(isbutton==3)
ladanyi@98:               arrow_pos = calcArrowPos(moved_node_1, moved_node_2, fix_node, old_arrow_pos, false);
ladanyi@98: 	    else
ladanyi@98:               arrow_pos = calcArrowPos(moved_node_1, moved_node_2, fix_node, old_arrow_pos, true);
hegyi@27: 
ladanyi@98:             mytab.mapstorage.arrow_pos.set(ei, arrow_pos);
ladanyi@98:             edgesmap[ei]->draw();
hegyi@27: 
hegyi@28: 	    //reposition of edgetext
ladanyi@98: 	    XY text_pos=mytab.mapstorage.arrow_pos[ei];
ladanyi@98: 	    text_pos+=(XY(10,10));
hegyi@27: 	    edgetextmap[ei]->property_x().set_value(text_pos.x);
hegyi@27: 	    edgetextmap[ei]->property_y().set_value(text_pos.y);
hegyi@27:         }
hegyi@27: 
hegyi@96:         for(InEdgeIt ei((mytab.mapstorage).graph,active_node);ei!=INVALID;++ei)
hegyi@27:         {
ladanyi@98:             XY moved_node_1(coord_x - dx, coord_y - dy);
ladanyi@98:             XY moved_node_2(coord_x, coord_y);
ladanyi@98:             Node source = mytab.mapstorage.graph.source(ei);
ladanyi@98:             XY fix_node(mytab.mapstorage.coords[source].x,
ladanyi@98:                         mytab.mapstorage.coords[source].y);
ladanyi@98:             XY old_arrow_pos(mytab.mapstorage.arrow_pos[ei]);
hegyi@27: 
ladanyi@98:             XY arrow_pos;
ladanyi@98: 	    if(isbutton==3)
ladanyi@98:               arrow_pos = calcArrowPos(moved_node_1, moved_node_2, fix_node, old_arrow_pos, false);
ladanyi@98: 	    else
ladanyi@98:               arrow_pos = calcArrowPos(moved_node_1, moved_node_2, fix_node, old_arrow_pos, true);
hegyi@27: 
ladanyi@98:             mytab.mapstorage.arrow_pos.set(ei, arrow_pos);
ladanyi@98:             edgesmap[ei]->draw();
hegyi@27: 
ladanyi@98: 	    //reposition of edgetext
ladanyi@98: 	    XY text_pos=mytab.mapstorage.arrow_pos[ei];
ladanyi@98: 	    text_pos+=(XY(10,10));
hegyi@27: 	    edgetextmap[ei]->property_x().set_value(text_pos.x);
hegyi@27: 	    edgetextmap[ei]->property_y().set_value(text_pos.y);
hegyi@27:         }
hegyi@27:       }
hegyi@27:     default: break;
hegyi@27:   }
hegyi@27: 
hegyi@31:   return false;
hegyi@27: }
hegyi@27: 
ladanyi@98: XY GraphDisplayerCanvas::calcArrowPos(XY moved_node_1, XY moved_node_2, XY fix_node, XY old_arrow_pos, bool move)
ladanyi@98: {
ladanyi@98:   if(!move)
ladanyi@98:   {
ladanyi@98:     return XY((moved_node_2.x + fix_node.x) / 2.0, (moved_node_2.y + fix_node.y) / 2.0);
ladanyi@98:   }
ladanyi@98:   else
ladanyi@98:   {
ladanyi@98:     //////////////////////////////////////////////////////////////////////////////////////////////////////
ladanyi@98:     /////////// keeps shape-with scalar multiplication - version 2.
ladanyi@98:     //////////////////////////////////////////////////////////////////////////////////////////////////////
ladanyi@98: 
ladanyi@98:     //old vector from one to the other node - a
ladanyi@98:     xy<double> a_v(moved_node_1.x-fix_node.x,moved_node_1.y-fix_node.y);
ladanyi@98:     //new vector from one to the other node - b
ladanyi@98:     xy<double> b_v(moved_node_2.x-fix_node.x,moved_node_2.y-fix_node.y);
ladanyi@98: 
ladanyi@98:     double absa=sqrt(a_v.normSquare());
ladanyi@98:     double absb=sqrt(b_v.normSquare());
ladanyi@98: 
ladanyi@98:     if ((absa == 0.0) || (absb == 0.0))
ladanyi@98:     {
ladanyi@98:       return old_arrow_pos;
ladanyi@98:     }
ladanyi@98:     else
ladanyi@98:     {
ladanyi@98:       //old vector from one node to the breakpoint - c
ladanyi@98:       xy<double> c_v(old_arrow_pos.x-fix_node.x,old_arrow_pos.y-fix_node.y);
ladanyi@98: 
ladanyi@98:       //unit vector with the same direction to a_v
ladanyi@98:       xy<double> a_v_u(a_v.x/absa,a_v.y/absa);
ladanyi@98: 
ladanyi@98:       //normal vector of unit vector with the same direction to a_v
ladanyi@98:       xy<double> a_v_u_n(((-1)*a_v_u.y),a_v_u.x);
ladanyi@98: 
ladanyi@98:       //unit vector with the same direction to b_v
ladanyi@98:       xy<double> b_v_u(b_v.x/absb,b_v.y/absb);
ladanyi@98: 
ladanyi@98:       //normal vector of unit vector with the same direction to b_v
ladanyi@98:       xy<double> b_v_u_n(((-1)*b_v_u.y),b_v_u.x);
ladanyi@98: 
ladanyi@98:       //vector c in a_v_u and a_v_u_n co-ordinate system
ladanyi@98:       xy<double> c_a(c_v*a_v_u,c_v*a_v_u_n);
ladanyi@98: 
ladanyi@98:       //new vector from one node to the breakpoint - d - we have to calculate this one
ladanyi@98:       xy<double> d_v=absb/absa*(c_a.x*b_v_u+c_a.y*b_v_u_n);
ladanyi@98: 
ladanyi@98:       return XY(d_v.x+fix_node.x,d_v.y+fix_node.y);
ladanyi@98:     }
ladanyi@98:   }
ladanyi@98: }
ladanyi@98: 
hegyi@30: bool GraphDisplayerCanvas::createNodeEventHandler(GdkEvent* e)
hegyi@27: {
hegyi@27:   switch(e->type)
ladanyi@63:   {
ladanyi@63:     //move the new node
ladanyi@63:     case GDK_MOTION_NOTIFY:
ladanyi@63:       {
ladanyi@63:         GdkEvent * generated=new GdkEvent();
ladanyi@63:         generated->motion.x=e->motion.x;
ladanyi@63:         generated->motion.y=e->motion.y;
ladanyi@63:         generated->type=GDK_MOTION_NOTIFY;
ladanyi@63:         moveEventHandler(generated);      
ladanyi@63:         break;
ladanyi@63:       }
hegyi@27: 
ladanyi@63:     case GDK_BUTTON_RELEASE:
hegyi@96:       (mytab.mapstorage).modified = true;
ladanyi@53: 
hegyi@27:       isbutton=1;
hegyi@27: 
hegyi@96:       active_node=(mytab.mapstorage).graph.addNode();
hegyi@27: 
hegyi@27:       //initiating values corresponding to new node in maps
hegyi@27: 
hegyi@27:       window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
hegyi@27: 
ladanyi@63:       // update coordinates
hegyi@96:       (mytab.mapstorage).coords.set(active_node, xy<double>(clicked_x, clicked_y));
ladanyi@63: 
ladanyi@63:       // update all other maps
ladanyi@63:       for (std::map<std::string, Graph::NodeMap<double>*>::const_iterator it =
hegyi@96:           (mytab.mapstorage).nodemap_storage.begin(); it !=
hegyi@96:           (mytab.mapstorage).nodemap_storage.end(); ++it)
ladanyi@63:       {
ladanyi@64:         if ((it->first != "coordinates_x") &&
ladanyi@64:             (it->first != "coordinates_y"))
ladanyi@63:         {
ladanyi@63:           (*(it->second))[active_node] =
hegyi@96:             (mytab.mapstorage).nodemap_default[it->first];
ladanyi@63:         }
ladanyi@63:       }
ladanyi@64:       // increment the id map's default value
hegyi@96:       (mytab.mapstorage).nodemap_default["id"] += 1.0;
ladanyi@63: 
ladanyi@53:       nodesmap[active_node]=new Gnome::Canvas::Ellipse(displayed_graph,
ladanyi@63:           clicked_x-20, clicked_y-20, clicked_x+20, clicked_y+20);
hegyi@27:       active_item=(Gnome::Canvas::Item *)(nodesmap[active_node]);
ladanyi@63:       *(nodesmap[active_node]) <<
ladanyi@63:         Gnome::Canvas::Properties::fill_color("blue");
ladanyi@63:       *(nodesmap[active_node]) <<
ladanyi@63:         Gnome::Canvas::Properties::outline_color("black");
ladanyi@63:       active_item->raise_to_top();
ladanyi@63: 
hegyi@27:       (nodesmap[active_node])->show();
hegyi@28: 
ladanyi@53:       nodetextmap[active_node]=new Gnome::Canvas::Text(displayed_graph,
ladanyi@63:           clicked_x+node_property_defaults[N_RADIUS]+5,
ladanyi@63:           clicked_y+node_property_defaults[N_RADIUS]+5, "");
hegyi@28:       nodetextmap[active_node]->property_fill_color().set_value("darkblue");
ladanyi@63:       nodetextmap[active_node]->raise_to_top();
hegyi@28: 
hegyi@94: //       mapwin.updateNode(active_node);
hegyi@94:       propertyUpdate(active_node);
hegyi@28: 
hegyi@27:       isbutton=0;
hegyi@31:       target_item=NULL;
hegyi@27:       active_item=NULL;
hegyi@27:       active_node=INVALID;
hegyi@27:       break;
hegyi@27:     default:
hegyi@27:       break;
ladanyi@63:   }
hegyi@27:   return false;
hegyi@27: }
hegyi@27: 
hegyi@30: bool GraphDisplayerCanvas::createEdgeEventHandler(GdkEvent* e)
hegyi@27: {
hegyi@27:   switch(e->type)
ladanyi@63:   {
hegyi@27:     case GDK_BUTTON_PRESS:
hegyi@27:       //in edge creation right button has special meaning
hegyi@27:       if(e->button.button!=3)
ladanyi@63:       {
ladanyi@63:         //there is not yet selected node
ladanyi@63:         if(active_node==INVALID)
ladanyi@63:         {
ladanyi@63:           //we mark the location of the event to be able to calculate parameters of dragging
hegyi@31: 
ladanyi@63:           window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
hegyi@31: 
ladanyi@63:           active_item=(get_item_at(clicked_x, clicked_y));
ladanyi@63:           active_node=INVALID;
hegyi@96:           for (NodeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
ladanyi@63:           {
ladanyi@63:             if(nodesmap[i]==active_item)
ladanyi@63:             {
ladanyi@63:               active_node=i;
ladanyi@63:             }
ladanyi@63:           }
ladanyi@63:           //the clicked item is really a node
ladanyi@63:           if(active_node!=INVALID)
ladanyi@63:           {
ladanyi@63:             *(nodesmap[active_node]) << Gnome::Canvas::Properties::fill_color("red");
ladanyi@63:             isbutton=1;
ladanyi@63:           }
ladanyi@63:           //clicked item was not a node. It could be e.g. edge.
ladanyi@63:           else
ladanyi@63:           {
ladanyi@63:             active_item=NULL;
ladanyi@63:           }
ladanyi@63:         }
ladanyi@63:         //we only have to do sg. if the mouse button
ladanyi@63:         // is pressed already once AND the click was
ladanyi@63:         // on a node that was found in the set of 
ladanyi@63:         //nodes, and now we only search for the second 
ladanyi@63:         //node
ladanyi@63:         else
ladanyi@63:         {
ladanyi@63:           window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
ladanyi@63:           target_item=(get_item_at(clicked_x, clicked_y));
ladanyi@63:           Node target_node=INVALID;
hegyi@96:           for (NodeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
ladanyi@63:           {
ladanyi@63:             if(nodesmap[i]==target_item)
ladanyi@63:             {
ladanyi@63:               target_node=i;
ladanyi@63:             }
ladanyi@63:           }
ladanyi@63:           //the clicked item is a node, the edge can be drawn
ladanyi@63:           if(target_node!=INVALID)
ladanyi@63:           {
ladanyi@63:             if(target_node!=active_node)		
ladanyi@63:             {
hegyi@96:               (mytab.mapstorage).modified = true;
ladanyi@53: 
ladanyi@63:               *(nodesmap[target_node]) <<
ladanyi@63:                 Gnome::Canvas::Properties::fill_color("red");
hegyi@27: 
ladanyi@63:               //creating new edge
hegyi@96:               active_edge=(mytab.mapstorage).graph.addEdge(active_node,
ladanyi@63:                   target_node);
hegyi@27: 
ladanyi@64:               // update maps
ladanyi@63:               for (std::map<std::string,
ladanyi@63:                   Graph::EdgeMap<double>*>::const_iterator it =
hegyi@96:                   (mytab.mapstorage).edgemap_storage.begin(); it !=
hegyi@96:                   (mytab.mapstorage).edgemap_storage.end(); ++it)
ladanyi@63:               {
ladanyi@64:                 (*(it->second))[active_edge] =
hegyi@96:                   (mytab.mapstorage).edgemap_default[it->first];
ladanyi@63:               }
ladanyi@64:               // increment the id map's default value
hegyi@96:               (mytab.mapstorage).edgemap_default["id"] += 1.0;
hegyi@27: 
ladanyi@63:               //calculating coordinates of new edge
ladanyi@63:               Gnome::Canvas::Points coos;
ladanyi@63:               double x1, x2, y1, y2;
hegyi@27: 
ladanyi@63:               active_item->get_bounds(x1, y1, x2, y2);
ladanyi@63:               coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
hegyi@27: 
ladanyi@63:               target_item->get_bounds(x1, y1, x2, y2);
ladanyi@63:               coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
hegyi@27: 
ladanyi@113:               // set the coordinates of the arrow on the new edge
ladanyi@113:               MapStorage& ms = mytab.mapstorage;
ladanyi@113:               ms.arrow_pos.set(active_edge,
ladanyi@113:                   (ms.coords[ms.graph.source(active_edge)] +
ladanyi@113:                    ms.coords[ms.graph.target(active_edge)])/ 2.0);
ladanyi@113: 
ladanyi@63:               //drawing new edge
ladanyi@98:               edgesmap[active_edge]=new BrokenEdge(displayed_graph, active_edge,
ladanyi@63:                   *this);
ladanyi@63:               *(edgesmap[active_edge]) <<
ladanyi@63:                 Gnome::Canvas::Properties::fill_color("green");
ladanyi@63:               edgesmap[active_edge]->property_width_pixels().set_value(10);
hegyi@27: 
ladanyi@63:               edgesmap[active_edge]->lower_to_bottom();
hegyi@28: 
ladanyi@63:               //initializing edge-text as well, to empty string
ladanyi@98:               XY text_pos=mytab.mapstorage.arrow_pos[active_edge];
ladanyi@98:               text_pos+=(XY(10,10));
ladanyi@63: 
ladanyi@63:               edgetextmap[active_edge]=new Gnome::Canvas::Text(displayed_graph,
ladanyi@63:                   text_pos.x, text_pos.y, "");
ladanyi@63:               edgetextmap[active_edge]->property_fill_color().set_value(
ladanyi@63:                   "darkgreen");
ladanyi@63:               edgetextmap[active_edge]->raise_to_top();
ladanyi@63: 
ladanyi@63:               //updating its properties
hegyi@94: //               mapwin.updateEdge(active_edge);
hegyi@94:               propertyUpdate(active_edge);
ladanyi@63:             }
ladanyi@63:             else
ladanyi@63:             {
ladanyi@63:               target_node=INVALID;
ladanyi@63:               std::cerr << "Loop edge is not yet implemented!" << std::endl;
ladanyi@63:             }
ladanyi@63:           }
ladanyi@63:           //clicked item was not a node. it could be an e.g. edge. we do not
ladanyi@63:           //deal with it furthermore.
ladanyi@63:           else
ladanyi@63:           {
ladanyi@63:             target_item=NULL;
ladanyi@63:           }
ladanyi@63:         }
ladanyi@63:       }
hegyi@27:       break;
hegyi@27:     case GDK_BUTTON_RELEASE:
hegyi@27:       isbutton=0;
hegyi@27:       //we clear settings in two cases
hegyi@27:       //1: the edge is ready (target_item has valid value)
hegyi@27:       //2: the edge creation is cancelled with right button
hegyi@27:       if((target_item)||(e->button.button==3))
ladanyi@63:       {
ladanyi@63:         if(active_item)
ladanyi@63:         {
ladanyi@63:           *active_item << Gnome::Canvas::Properties::fill_color("blue");
ladanyi@63:           active_item=NULL;
ladanyi@63:         }
ladanyi@63:         if(target_item)
ladanyi@63:         {
ladanyi@63:           *target_item << Gnome::Canvas::Properties::fill_color("blue");
ladanyi@63:           target_item=NULL;
ladanyi@63:         }
ladanyi@63:         active_node=INVALID;
ladanyi@63:         active_edge=INVALID;
ladanyi@63:       }
hegyi@27:       break;
hegyi@27:     default:
hegyi@27:       break;
ladanyi@63:   }
hegyi@27:   return false;
hegyi@27: }
hegyi@27: 
hegyi@30: bool GraphDisplayerCanvas::eraserEventHandler(GdkEvent* e)
hegyi@27: {
hegyi@27:   switch(e->type)
hegyi@27:     {
hegyi@27:     case GDK_BUTTON_PRESS:
hegyi@43:       //finding the clicked items
hegyi@31:       window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
hegyi@31:       active_item=(get_item_at(clicked_x, clicked_y));
hegyi@27:       active_node=INVALID;
hegyi@27:       active_edge=INVALID;
hegyi@43:       //was it a node?
hegyi@96:       for (NodeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
hegyi@27: 	{
hegyi@27: 	  if(nodesmap[i]==active_item)
hegyi@27: 	    {
hegyi@27: 	      active_node=i;
hegyi@27: 	    }
hegyi@27: 	}
hegyi@43:       //or was it an edge?
hegyi@27:       if(active_node==INVALID)
hegyi@27: 	{
hegyi@96: 	  for (EdgeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
hegyi@27: 	    {
hegyi@27: 	      if(edgesmap[i]==active_item)
hegyi@27: 		{
hegyi@27: 		  active_edge=i;
hegyi@27: 		}
hegyi@27: 	    }
hegyi@27: 	}
hegyi@43: 
hegyi@43:       //recolor activated item
hegyi@31:       if(active_item)
hegyi@31: 	{
hegyi@31: 	  *active_item << Gnome::Canvas::Properties::fill_color("red");
hegyi@31: 	}
hegyi@27:       break;
hegyi@27: 
hegyi@27:     case GDK_BUTTON_RELEASE:
hegyi@31:       window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
hegyi@31:       if(active_item)
hegyi@27: 	{
hegyi@43: 	  //the cursor was not moved since pressing it
hegyi@31: 	  if( active_item == ( get_item_at (clicked_x, clicked_y) ) )
hegyi@27: 	    {
hegyi@43: 	      //a node was found
hegyi@31: 	      if(active_node!=INVALID)
hegyi@31: 		{
hegyi@96:                   (mytab.mapstorage).modified = true;
hegyi@27: 
hegyi@31: 		  std::set<Graph::Edge> edges_to_delete;
hegyi@27: 
hegyi@96: 		  for(OutEdgeIt e((mytab.mapstorage).graph,active_node);e!=INVALID;++e)
hegyi@31: 		    {
hegyi@31: 		      edges_to_delete.insert(e);
hegyi@31: 		    }
alpar@69: 		  
hegyi@96: 		  for(InEdgeIt e((mytab.mapstorage).graph,active_node);e!=INVALID;++e)
hegyi@31: 		    {
hegyi@31: 		      edges_to_delete.insert(e);
hegyi@31: 		    }
alpar@69: 		  
hegyi@31: 		  //deleting collected edges
alpar@69: 		  for(std::set<Graph::Edge>::iterator
alpar@69: 			edge_set_it=edges_to_delete.begin();
alpar@69: 		      edge_set_it!=edges_to_delete.end();
alpar@69: 		      ++edge_set_it)
hegyi@31: 		    {
hegyi@31: 		      deleteItem(*edge_set_it);
hegyi@31: 		    }
hegyi@31: 		  deleteItem(active_node);
hegyi@31: 		}
hegyi@31: 	      //a simple edge was chosen
hegyi@31: 	      else
hegyi@27: 		{
hegyi@31: 		  deleteItem(active_edge);
hegyi@27: 		}
hegyi@27: 	    }
hegyi@31: 	  //pointer was moved, deletion is cancelled
hegyi@27: 	  else
hegyi@27: 	    {
hegyi@31: 	      if(active_node!=INVALID)
hegyi@31: 		{
hegyi@31: 		  *active_item << Gnome::Canvas::Properties::fill_color("blue");
hegyi@31: 		}
hegyi@31: 	      else
hegyi@31: 		{
hegyi@31: 		  *active_item << Gnome::Canvas::Properties::fill_color("green");
hegyi@31: 		}
hegyi@27: 	    }
hegyi@27: 	}
hegyi@27:       //reseting datas
hegyi@27:       active_item=NULL;
hegyi@27:       active_edge=INVALID;
hegyi@27:       active_node=INVALID;
hegyi@27:       break;
hegyi@27: 
hegyi@27:     case GDK_MOTION_NOTIFY:
hegyi@27:       break;
hegyi@27: 
hegyi@27:     default:
hegyi@27:       break;
hegyi@27:     }
hegyi@31:   return false;
hegyi@27: }
hegyi@27: 
hegyi@32: bool GraphDisplayerCanvas::edgeMapEditEventHandler(GdkEvent* e)
hegyi@32: {
hegyi@48:   if(actual_tool==EDGE_MAP_EDIT)
ladanyi@66:   {
ladanyi@66:     switch(e->type)
hegyi@32:     {
ladanyi@66:       case GDK_BUTTON_PRESS:
ladanyi@66:         {
ladanyi@66:           //for determine, whether it was an edge
ladanyi@66:           Edge clicked_edge=INVALID;
hegyi@43: 
ladanyi@66:           window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
ladanyi@66:           active_item=(get_item_at(clicked_x, clicked_y));
hegyi@48: 
ladanyi@66:           //find the activated item between texts
hegyi@96:           for (EdgeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
ladanyi@66:           {
ladanyi@66:             //at the same time only one can be active
ladanyi@66:             if(edgetextmap[i]==active_item)
ladanyi@66:             {
ladanyi@66:               clicked_edge=i;
ladanyi@66:             }
ladanyi@66:           }
ladanyi@65: 
ladanyi@66:           //if it was not between texts, search for it between edges
ladanyi@66:           if(clicked_edge==INVALID)
ladanyi@66:           {
hegyi@96:             for (EdgeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
ladanyi@66:             {
ladanyi@66:               //at the same time only one can be active
ladanyi@66:               if((edgesmap[i]==active_item)||(edgetextmap[i]==active_item))
ladanyi@66:               {
ladanyi@66:                 clicked_edge=i;
ladanyi@66:               }
ladanyi@66:             }
ladanyi@66:           }
ladanyi@66:  
ladanyi@66:           //if it was really an edge...
ladanyi@66:           if(clicked_edge!=INVALID)
ladanyi@66:           {
ladanyi@66:             // the id map is not editable
ladanyi@66:             if (edgemap_to_edit == "id") return 0;
hegyi@48: 
ladanyi@66:             //and there is activated map
ladanyi@66:             if(edgetextmap[clicked_edge]->property_text().get_value()!="")
ladanyi@66:             {
ladanyi@66:               //activate the general variable for it
ladanyi@66:               active_edge=clicked_edge;
hegyi@48: 
ladanyi@66:               //create a dialog
hegyi@96:               Gtk::Dialog dialog("Edit value", true);
ladanyi@66:               dialog.add_button(Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
ladanyi@66:               dialog.add_button(Gtk::Stock::OK, Gtk::RESPONSE_ACCEPT);
ladanyi@66:               Gtk::VBox* vbox = dialog.get_vbox();
ladanyi@92:               Gtk::SpinButton spin(0.0, 4);
ladanyi@92:               spin.set_increments(1.0, 10.0);
ladanyi@92:               spin.set_range(-1000000.0, 1000000.0);
ladanyi@66:               spin.set_numeric(true);
ladanyi@66:               vbox->add(spin);
ladanyi@66:               spin.show();
ladanyi@66:               switch (dialog.run())
ladanyi@66:               {
ladanyi@66:                 case Gtk::RESPONSE_NONE:
ladanyi@66:                 case Gtk::RESPONSE_CANCEL:
ladanyi@66:                   break;
ladanyi@66:                 case Gtk::RESPONSE_ACCEPT:
ladanyi@66:                   double new_value = spin.get_value();
hegyi@96:                   (*(mytab.mapstorage).edgemap_storage[edgemap_to_edit])[active_edge] =
ladanyi@66:                     new_value;
ladanyi@66:                   std::ostringstream ostr;
ladanyi@66:                   ostr << new_value;
ladanyi@66:                   edgetextmap[active_edge]->property_text().set_value(
ladanyi@66:                       ostr.str());
ladanyi@66:                   //mapwin.updateEdge(active_edge);
hegyi@94: //                   mapwin.updateEdge(Edge(INVALID));
hegyi@94:                   propertyUpdate(Edge(INVALID));
ladanyi@66:               }
ladanyi@66:             }
ladanyi@66:           }
ladanyi@66:           break;
ladanyi@66:         }
ladanyi@66:       default:
ladanyi@66:         break;
hegyi@32:     }
ladanyi@66:   }
hegyi@32:   return false;  
hegyi@32: }
hegyi@32: 
hegyi@32: bool GraphDisplayerCanvas::nodeMapEditEventHandler(GdkEvent* e)
hegyi@32: {
hegyi@48:   if(actual_tool==NODE_MAP_EDIT)
ladanyi@66:   {
ladanyi@66:     switch(e->type)
hegyi@35:     {
ladanyi@66:       case GDK_BUTTON_PRESS:
ladanyi@66:         {
ladanyi@66:           //for determine, whether it was a node
ladanyi@66:           Node clicked_node=INVALID;
hegyi@43: 
ladanyi@66:           window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
ladanyi@66:           active_item=(get_item_at(clicked_x, clicked_y));
hegyi@43: 
ladanyi@66:           //find the activated item between texts
hegyi@96:           for (NodeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
ladanyi@66:           {
ladanyi@66:             //at the same time only one can be active
ladanyi@66:             if(nodetextmap[i]==active_item)
ladanyi@66:             {
ladanyi@66:               clicked_node=i;
ladanyi@66:             }
ladanyi@66:           }
hegyi@48: 
ladanyi@66:           //if there was not, search for it between nodes
ladanyi@66:           if(clicked_node==INVALID)
ladanyi@66:           {
hegyi@96:             for (NodeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
ladanyi@66:             {
ladanyi@66:               //at the same time only one can be active
ladanyi@66:               if(nodesmap[i]==active_item)
ladanyi@66:               {
ladanyi@66:                 clicked_node=i;
ladanyi@66:               }
ladanyi@66:             }
ladanyi@66:           }
hegyi@48: 
ladanyi@66:           //if it was really a node...
ladanyi@66:           if(clicked_node!=INVALID)
ladanyi@66:           {
ladanyi@66:             // the id map is not editable
ladanyi@66:             if (nodemap_to_edit == "id") return 0;
hegyi@48: 
ladanyi@66:             //and there is activated map
ladanyi@66:             if(nodetextmap[clicked_node]->property_text().get_value()!="")
ladanyi@66:             {
ladanyi@66:               //activate the general variable for it
ladanyi@66:               active_node=clicked_node;
hegyi@48: 
ladanyi@66:               //create a dialog
hegyi@96:               Gtk::Dialog dialog("Edit value", true);
ladanyi@66:               dialog.add_button(Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
ladanyi@66:               dialog.add_button(Gtk::Stock::OK, Gtk::RESPONSE_ACCEPT);
ladanyi@66:               Gtk::VBox* vbox = dialog.get_vbox();
ladanyi@92:               Gtk::SpinButton spin(0.0, 4);
ladanyi@92:               spin.set_increments(1.0, 10.0);
ladanyi@92:               spin.set_range(-1000000.0, 1000000.0);
ladanyi@66:               spin.set_numeric(true);
ladanyi@66:               vbox->add(spin);
ladanyi@66:               spin.show();
ladanyi@66:               switch (dialog.run())
ladanyi@66:               {
ladanyi@66:                 case Gtk::RESPONSE_NONE:
ladanyi@66:                 case Gtk::RESPONSE_CANCEL:
ladanyi@66:                   break;
ladanyi@66:                 case Gtk::RESPONSE_ACCEPT:
ladanyi@66:                   double new_value = spin.get_value();
hegyi@96:                   (*(mytab.mapstorage).nodemap_storage[nodemap_to_edit])[active_node] =
ladanyi@66:                     new_value;
ladanyi@66:                   std::ostringstream ostr;
ladanyi@66:                   ostr << new_value;
ladanyi@66:                   nodetextmap[active_node]->property_text().set_value(
ladanyi@66:                       ostr.str());
ladanyi@66:                   //mapwin.updateNode(active_node);
hegyi@94: //                   mapwin.updateNode(Node(INVALID));
hegyi@94:                   propertyUpdate(Node(INVALID));
ladanyi@66:               }
ladanyi@66:             }
ladanyi@66:           }
ladanyi@66:           break;
ladanyi@66:         }
ladanyi@66:       default:
ladanyi@66:         break;
hegyi@35:     }
ladanyi@66:   }
hegyi@35:   return false;  
hegyi@32: }
hegyi@32: 
alpar@62: void GraphDisplayerCanvas::deleteItem(Node node_to_delete)
hegyi@27: {
hegyi@28:   delete(nodetextmap[node_to_delete]);
hegyi@27:   delete(nodesmap[node_to_delete]);
hegyi@96:   (mytab.mapstorage).graph.erase(node_to_delete);
hegyi@27: }
hegyi@27: 
alpar@62: void GraphDisplayerCanvas::deleteItem(Edge edge_to_delete)
hegyi@27: {
hegyi@28:   delete(edgetextmap[edge_to_delete]);
hegyi@27:   delete(edgesmap[edge_to_delete]);
hegyi@96:   (mytab.mapstorage).graph.erase(edge_to_delete);
hegyi@27: }
hegyi@27: 
hegyi@30: void GraphDisplayerCanvas::textReposition(xy<double> new_place)
hegyi@27: {
hegyi@27:   new_place+=(xy<double>(10,10));
hegyi@35:   edgetextmap[forming_edge]->property_x().set_value(new_place.x);
hegyi@35:   edgetextmap[forming_edge]->property_y().set_value(new_place.y);
hegyi@27: }
hegyi@27: 
hegyi@30: void GraphDisplayerCanvas::toggleEdgeActivity(BrokenEdge* active_bre, bool on)
hegyi@27: {
hegyi@27:   if(on)
hegyi@27:     {
hegyi@35:       if(forming_edge!=INVALID)
hegyi@27: 	{
hegyi@48: 	  std::cerr << "ERROR!!!! Valid edge found!" << std::endl;
hegyi@27: 	}
hegyi@27:       else
hegyi@27: 	{
hegyi@96: 	  for (EdgeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)
hegyi@27: 	    {
hegyi@27: 	      if(edgesmap[i]==active_bre)
hegyi@27: 		{
hegyi@35: 		  forming_edge=i;
hegyi@27: 		}
hegyi@27: 	    }
hegyi@27: 	}
hegyi@27:     }
hegyi@27:   else
hegyi@27:     {
hegyi@35:       if(forming_edge!=INVALID)
hegyi@27: 	{
hegyi@35: 	  forming_edge=INVALID;
hegyi@27: 	}
hegyi@27:       else
hegyi@27: 	{
hegyi@48: 	  std::cerr << "ERROR!!!! Invalid edge found!" << std::endl;
hegyi@27: 	}
hegyi@27:     }
hegyi@27: }