ladanyi@53: #include "graph_displayer_canvas.h"
alpar@59: #include <cmath>
ladanyi@6: 
hegyi@55: GraphDisplayerCanvas::GraphDisplayerCanvas(MapStorage & ms, MapWin & mw, Gtk::Window * mainwin) :
ladanyi@53:   nodesmap(ms.graph), edgesmap(ms.graph), edgetextmap(ms.graph),
ladanyi@66:   nodetextmap(ms.graph), displayed_graph(*(root()), 0, 0), mapstorage(ms),
ladanyi@66:   isbutton(0), active_item(NULL), target_item(NULL), nodemap_to_edit(""),
ladanyi@66:   edgemap_to_edit(""), mapwin(mw)
ladanyi@6: {
hegyi@55:   parentwin=mainwin;
hegyi@55: 
ladanyi@53:   //base event handler is move tool
ladanyi@53:   actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::moveEventHandler), false);
ladanyi@53:   actual_tool=MOVE;
hegyi@34: 
ladanyi@53:   active_node=INVALID;
ladanyi@53:   active_edge=INVALID;
ladanyi@53:   forming_edge=INVALID;
ladanyi@53: }
hegyi@9: 
ladanyi@53: GraphDisplayerCanvas::~GraphDisplayerCanvas()
ladanyi@53: {
ladanyi@53:   for (NodeIt n(mapstorage.graph); n != INVALID; ++n)
ladanyi@53:   {
ladanyi@53:     delete nodesmap[n];
ladanyi@53:     delete nodetextmap[n];
ladanyi@53:   }
ladanyi@6: 
ladanyi@53:   for (EdgeIt e(mapstorage.graph); e != INVALID; ++e)
ladanyi@53:   {
ladanyi@53:     delete edgesmap[e];
ladanyi@53:     delete edgetextmap[e];
ladanyi@53:   }
ladanyi@53: }
ladanyi@53: 
ladanyi@53: void GraphDisplayerCanvas::drawGraph()
ladanyi@53: {
ladanyi@6:   //first edges are drawn, to hide joining with nodes later
ladanyi@6: 
ladanyi@53:   for (EdgeIt i(mapstorage.graph); i!=INVALID; ++i)
ladanyi@6:   {
ladanyi@6: 
ladanyi@53:     //drawing green lines, coordinates are from mapstorage.coords
ladanyi@6: 
ladanyi@6:     Gnome::Canvas::Points coos;
ladanyi@53:     coos.push_back(Gnome::Art::Point(
ladanyi@53:           mapstorage.coords[mapstorage.graph.source(i)].x,
ladanyi@53:           mapstorage.coords[mapstorage.graph.source(i)].y));
ladanyi@53:     coos.push_back(Gnome::Art::Point(
ladanyi@53:           mapstorage.coords[mapstorage.graph.target(i)].x,
ladanyi@53:           mapstorage.coords[mapstorage.graph.target(i)].y));
ladanyi@6:     
hegyi@21:     edgesmap[i]=new BrokenEdge(displayed_graph, coos, *this);
ladanyi@6:     *(edgesmap[i]) << Gnome::Canvas::Properties::fill_color("green");
hegyi@47:     edgesmap[i]->property_width_units().set_value(10);    
ladanyi@63:     edgesmap[i]->lower_to_bottom();
ladanyi@6:     
ladanyi@6:     //initializing edge-text as well, to empty string
ladanyi@6: 
hegyi@30:     xy<double> text_pos=edgesmap[i]->getArrowPos();
hegyi@25:     text_pos+=(xy<double>(10,10));
hegyi@25: 
hegyi@25:     edgetextmap[i]=new Gnome::Canvas::Text(displayed_graph, text_pos.x, text_pos.y, "");
hegyi@28:     edgetextmap[i]->property_fill_color().set_value("darkgreen");
hegyi@48:     edgetextmap[i]->signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::edgeMapEditEventHandler), false);
ladanyi@63:     edgetextmap[i]->raise_to_top();
ladanyi@6:   }
ladanyi@6: 
ladanyi@6:   //afterwards nodes come to be drawn
ladanyi@6: 
ladanyi@53:   for (NodeIt i(mapstorage.graph); i!=INVALID; ++i)
ladanyi@6:   {
ladanyi@6:     //drawing bule nodes, with black line around them
ladanyi@6: 
ladanyi@53:     nodesmap[i]=new Gnome::Canvas::Ellipse(
ladanyi@53:         displayed_graph,
ladanyi@53:         mapstorage.coords[i].x-20,
ladanyi@53:         mapstorage.coords[i].y-20,
ladanyi@53:         mapstorage.coords[i].x+20,
ladanyi@53:         mapstorage.coords[i].y+20);
ladanyi@6:     *(nodesmap[i]) << Gnome::Canvas::Properties::fill_color("blue");
ladanyi@6:     *(nodesmap[i]) << Gnome::Canvas::Properties::outline_color("black");
ladanyi@63:     nodesmap[i]->raise_to_top();
hegyi@28: 
hegyi@28:     //initializing edge-text as well, to empty string
hegyi@28: 
ladanyi@53:     xy<double> text_pos(
ladanyi@53:         (mapstorage.coords[i].x+node_property_defaults[N_RADIUS]+5),
ladanyi@53:         (mapstorage.coords[i].y+node_property_defaults[N_RADIUS]+5));
hegyi@28: 
ladanyi@53:     nodetextmap[i]=new Gnome::Canvas::Text(displayed_graph,
ladanyi@53:         text_pos.x, text_pos.y, "");
hegyi@28:     nodetextmap[i]->property_fill_color().set_value("darkblue");
hegyi@48:     nodetextmap[i]->signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::nodeMapEditEventHandler), false);
ladanyi@63:     nodetextmap[i]->raise_to_top();
ladanyi@6:   }
ladanyi@6: 
ladanyi@6:   updateScrollRegion();
ladanyi@6: }
ladanyi@6: 
ladanyi@53: void GraphDisplayerCanvas::clear()
ladanyi@6: {
ladanyi@53:   active_node=INVALID;
ladanyi@53:   active_edge=INVALID;
ladanyi@53:   forming_edge=INVALID;
ladanyi@6: 
ladanyi@53:   for (NodeIt n(mapstorage.graph); n != INVALID; ++n)
ladanyi@6:   {
ladanyi@53:     delete nodesmap[n];
ladanyi@53:     delete nodetextmap[n];
ladanyi@6:   }
ladanyi@6: 
ladanyi@53:   for (EdgeIt e(mapstorage.graph); e != INVALID; ++e)
ladanyi@53:   {
ladanyi@53:     delete edgesmap[e];
ladanyi@53:     delete edgetextmap[e];
ladanyi@53:   }
ladanyi@6: }