ladanyi@6
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#include <graph_displayer_canvas.h>
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ladanyi@6
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#include <math.h>
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ladanyi@6
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hegyi@11
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GraphDisplayerCanvas::GraphDisplayerCanvas(Graph & gr, CoordinatesMap & cm, MapStorage & ms):g(gr),nodesmap(g),edgesmap(g),edgetextmap(g),displayed_graph(*(root()), 0, 0),mapstorage(ms),isbutton(false),active_item(NULL),target_item(NULL)
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ladanyi@6
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{
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hegyi@9
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hegyi@11
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actual_handler=displayed_graph.signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::create_edge_event_handler), false);
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hegyi@9
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ladanyi@6
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//set_center_scroll_region(true);
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ladanyi@6
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ladanyi@6
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//first edges are drawn, to hide joining with nodes later
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ladanyi@6
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ladanyi@6
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for (EdgeIt i(g); i!=INVALID; ++i)
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ladanyi@6
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{
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ladanyi@6
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ladanyi@6
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//drawing green lines, coordinates are from cm
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ladanyi@6
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ladanyi@6
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Gnome::Canvas::Points coos;
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ladanyi@6
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coos.push_back(Gnome::Art::Point(cm[g.source(i)].x,cm[g.source(i)].y));
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ladanyi@6
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coos.push_back(Gnome::Art::Point(cm[g.target(i)].x,cm[g.target(i)].y));
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ladanyi@6
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ladanyi@6
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edgesmap[i]=new Gnome::Canvas::Line(displayed_graph, coos);
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ladanyi@6
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*(edgesmap[i]) << Gnome::Canvas::Properties::fill_color("green");
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ladanyi@6
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edgesmap[i]->property_width_pixels().set_value(10);
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ladanyi@6
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ladanyi@6
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//initializing edge-text as well, to empty string
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ladanyi@6
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ladanyi@6
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double x1, x2, y1, y2;
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ladanyi@6
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edgesmap[i]->get_bounds(x1, y1, x2, y2);
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ladanyi@6
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ladanyi@6
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edgetextmap[i]=new Gnome::Canvas::Text(displayed_graph,(x1+x2)/2, (y1+y2)/2, "");
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ladanyi@6
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edgetextmap[i]->property_fill_color().set_value("black");
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ladanyi@6
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}
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ladanyi@6
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ladanyi@6
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//afterwards nodes come to be drawn
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ladanyi@6
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ladanyi@6
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NodeIt i(g);
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ladanyi@6
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int maxx=0, maxy=0, minx=(int)cm[i].x, miny=(int)cm[i].y;
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ladanyi@6
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ladanyi@6
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for (; i!=INVALID; ++i)
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ladanyi@6
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{
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ladanyi@6
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//minimum and maximum is gathered to be able to zoom to the graph correctly (whole figure should be seen)
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ladanyi@6
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ladanyi@6
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if(cm[i].x>maxx)maxx=(int)cm[i].x;
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ladanyi@6
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if(cm[i].y>maxy)maxy=(int)cm[i].y;
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ladanyi@6
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if(cm[i].x<minx)minx=(int)cm[i].x;
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ladanyi@6
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if(cm[i].y<miny)miny=(int)cm[i].y;
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ladanyi@6
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ladanyi@6
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//drawing bule nodes, with black line around them
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ladanyi@6
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ladanyi@6
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nodesmap[i]=new Gnome::Canvas::Ellipse(displayed_graph, cm[i].x-20, cm[i].y-20, cm[i].x+20, cm[i].y+20);
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ladanyi@6
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*(nodesmap[i]) << Gnome::Canvas::Properties::fill_color("blue");
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ladanyi@6
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*(nodesmap[i]) << Gnome::Canvas::Properties::outline_color("black");
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hegyi@9
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//!!!!!!! (nodesmap[i])->signal_event().connect(sigc::bind(sigc::mem_fun(*this, &GraphDisplayerCanvas::event_handler),i));
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ladanyi@6
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}
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ladanyi@6
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ladanyi@6
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updateScrollRegion();
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ladanyi@6
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}
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ladanyi@6
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ladanyi@6
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GraphDisplayerCanvas::~GraphDisplayerCanvas()
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ladanyi@6
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{
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ladanyi@6
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ladanyi@6
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//writing out the end state of the graph
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ladanyi@6
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//\todo all the maps has to be write out!
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ladanyi@6
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ladanyi@6
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Graph::NodeMap <int> id(g);
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ladanyi@6
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Graph::NodeMap <double> xc(g);
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ladanyi@6
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Graph::NodeMap <double> yc(g);
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ladanyi@6
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ladanyi@6
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int j=1;
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ladanyi@6
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ladanyi@6
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for (NodeIt i(g); i!=INVALID; ++i)
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ladanyi@6
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{
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ladanyi@6
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double x1,y1,x2,y2;
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ladanyi@6
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nodesmap[i]->get_bounds(x1, y1, x2, y2);
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ladanyi@6
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ladanyi@6
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id[i]=j++;
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ladanyi@6
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xc[i]=(x1+x2)/2;
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ladanyi@6
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yc[i]=(y1+y2)/2;
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ladanyi@6
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}
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ladanyi@6
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ladanyi@6
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GraphWriter<Graph> writer(std::cout,g);
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ladanyi@6
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ladanyi@6
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writer.writeNodeMap("id", id);
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ladanyi@6
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writer.writeNodeMap("coordinates_x", xc);
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ladanyi@6
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writer.writeNodeMap("coordinates_y", yc);
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ladanyi@6
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writer.run();
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ladanyi@6
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}
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ladanyi@6
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ladanyi@6
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int GraphDisplayerCanvas::changeLineWidth (std::string mapname)
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ladanyi@6
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{
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ladanyi@6
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for (EdgeIt i(g); i!=INVALID; ++i)
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ladanyi@6
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{
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ladanyi@6
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int w=(int)(*(mapstorage.edgemap_storage)[mapname])[i];
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ladanyi@6
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edgesmap[i]->property_width_pixels().set_value(w);
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ladanyi@6
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}
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ladanyi@6
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return 0;
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ladanyi@6
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};
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ladanyi@6
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ladanyi@6
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int GraphDisplayerCanvas::changeColor (std::string mapname)
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ladanyi@6
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{
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ladanyi@6
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ladanyi@6
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//function maps the range of the maximum and
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ladanyi@6
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//the minimum of the nodemap to the range of
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ladanyi@6
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//green in RGB
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ladanyi@6
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ladanyi@6
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for (EdgeIt i(g); i!=INVALID; ++i)
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ladanyi@6
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{
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ladanyi@6
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double w=(*(mapstorage.edgemap_storage)[mapname])[i];
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ladanyi@6
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double max=mapstorage.maxOfEdgeMap(mapname);
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ladanyi@6
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double min=mapstorage.minOfEdgeMap(mapname);
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ladanyi@6
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ladanyi@6
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//std::cout<<w<<" "<<max<<" "<<min<<" "<<100*(w-min)/(max-min)<<std::endl;
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ladanyi@6
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Gdk::Color color;
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ladanyi@6
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if(max!=min)
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ladanyi@6
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{
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ladanyi@6
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color.set_rgb_p (0, 100*(w-min)/(max-min), 0);
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ladanyi@6
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}
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ladanyi@6
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else
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ladanyi@6
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{
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ladanyi@6
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color.set_rgb_p (0, 100, 0);
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ladanyi@6
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}
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ladanyi@6
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ladanyi@6
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edgesmap[i]->property_fill_color_gdk().set_value(color);
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ladanyi@6
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}
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ladanyi@6
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return 0;
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ladanyi@6
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};
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ladanyi@6
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ladanyi@6
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int GraphDisplayerCanvas::changeText (std::string mapname)
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ladanyi@6
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{
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ladanyi@6
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ladanyi@6
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//the number in the map will be written on the edge
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ladanyi@6
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//EXCEPT when the name of the map is Text, because
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ladanyi@6
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//in that case empty string will be written, because
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ladanyi@6
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//that is the deleter map
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ladanyi@6
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//\todo isn't it a bit woodcutter?
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ladanyi@6
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ladanyi@6
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for (EdgeIt i(g); i!=INVALID; ++i)
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ladanyi@6
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{
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ladanyi@6
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if(mapname!="Text")
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ladanyi@6
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{
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ladanyi@6
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double number=(*(mapstorage.edgemap_storage)[mapname])[i];
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ladanyi@6
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int length=(int)(floor(log(number)/log(10)))+1;
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ladanyi@6
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int maxpos=(int)(pow(10,length-1));
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ladanyi@6
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int strl=length+1+RANGE;
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ladanyi@6
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char * str=new char[strl];
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ladanyi@6
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str[length]='.';
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ladanyi@6
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str[strl]='\0';
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ladanyi@6
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ladanyi@6
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for(int j=0;j<strl;j++)
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ladanyi@6
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{
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ladanyi@6
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if(j!=length)
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ladanyi@6
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{
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ladanyi@6
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int digit=(int)(number/maxpos);
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ladanyi@6
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str[j]=(digit+'0');
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ladanyi@6
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number-=digit*maxpos;
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ladanyi@6
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number*=10;
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ladanyi@6
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}
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ladanyi@6
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}
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ladanyi@6
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ladanyi@6
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edgetextmap[i]->property_text().set_value(str);
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ladanyi@6
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}
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ladanyi@6
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else
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ladanyi@6
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{
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ladanyi@6
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edgetextmap[i]->property_text().set_value("");
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ladanyi@6
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}
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ladanyi@6
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}
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ladanyi@6
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return 0;
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ladanyi@6
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};
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ladanyi@6
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ladanyi@6
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bool GraphDisplayerCanvas::event_handler(GdkEvent* e, Node n)
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ladanyi@6
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{
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ladanyi@6
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switch(e->type)
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ladanyi@6
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{
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ladanyi@6
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case GDK_BUTTON_PRESS:
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ladanyi@6
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//we mark the location of the event to be able to calculate parameters of dragging
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ladanyi@6
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clicked_x=e->button.x;
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ladanyi@6
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clicked_y=e->button.y;
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ladanyi@6
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active_item=(get_item_at(e->button.x, e->button.y));
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ladanyi@6
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isbutton=true;
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ladanyi@6
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break;
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ladanyi@6
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case GDK_BUTTON_RELEASE:
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ladanyi@6
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isbutton=false;
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ladanyi@6
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active_item=NULL;
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ladanyi@7
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updateScrollRegion();
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ladanyi@6
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break;
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ladanyi@6
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case GDK_MOTION_NOTIFY:
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ladanyi@6
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//we only have to do sg. if the mouse button is pressed
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ladanyi@6
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if(isbutton)
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ladanyi@6
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{
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ladanyi@6
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//new coordinates will be the old values,
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ladanyi@6
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//because the item will be moved to the
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ladanyi@6
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//new coordinate therefore the new movement
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ladanyi@6
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//has to be calculated from here
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ladanyi@6
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ladanyi@6
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double dx=e->motion.x-clicked_x;
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ladanyi@6
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double dy=e->motion.y-clicked_y;
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ladanyi@6
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active_item->move(dx, dy);
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ladanyi@6
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clicked_x=e->motion.x;
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ladanyi@6
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clicked_y=e->motion.y;
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ladanyi@6
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ladanyi@6
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//all the edges connected to the moved point has to be redrawn
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ladanyi@6
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ladanyi@6
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EdgeIt e;
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ladanyi@6
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g.firstOut(e,n);
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ladanyi@6
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for(;e!=INVALID;g.nextOut(e))
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ladanyi@6
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{
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ladanyi@6
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Gnome::Canvas::Points coos;
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ladanyi@6
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double x1, x2, y1, y2;
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ladanyi@6
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ladanyi@6
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nodesmap[g.source(e)]->get_bounds(x1, y1, x2, y2);
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ladanyi@6
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coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
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ladanyi@6
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ladanyi@6
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nodesmap[g.target(e)]->get_bounds(x1, y1, x2, y2);
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ladanyi@6
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coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
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ladanyi@6
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ladanyi@6
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edgesmap[e]->property_points().set_value(coos);
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ladanyi@6
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ladanyi@6
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edgesmap[e]->get_bounds(x1, y1, x2, y2);
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ladanyi@6
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ladanyi@6
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edgetextmap[e]->property_x().set_value((x1+x2)/2);
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ladanyi@6
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edgetextmap[e]->property_y().set_value((y1+y2)/2);
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ladanyi@6
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}
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ladanyi@6
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ladanyi@6
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g.firstIn(e,n);
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ladanyi@6
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for(;e!=INVALID;g.nextIn(e))
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ladanyi@6
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{
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ladanyi@6
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Gnome::Canvas::Points coos;
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ladanyi@6
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double x1, x2, y1, y2;
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ladanyi@6
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ladanyi@6
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nodesmap[g.source(e)]->get_bounds(x1, y1, x2, y2);
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ladanyi@6
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coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
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ladanyi@6
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ladanyi@6
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nodesmap[g.target(e)]->get_bounds(x1, y1, x2, y2);
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ladanyi@6
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coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
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ladanyi@6
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ladanyi@6
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edgesmap[e]->property_points().set_value(coos);
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ladanyi@6
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ladanyi@6
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edgesmap[e]->get_bounds(x1, y1, x2, y2);
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ladanyi@6
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ladanyi@6
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edgetextmap[e]->property_x().set_value((x1+x2)/2);
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ladanyi@6
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edgetextmap[e]->property_y().set_value((y1+y2)/2);
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ladanyi@6
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}
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ladanyi@6
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}
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ladanyi@6
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default: break;
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ladanyi@6
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}
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ladanyi@6
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return true;
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ladanyi@6
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}
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ladanyi@6
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ladanyi@6
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bool GraphDisplayerCanvas::on_expose_event(GdkEventExpose *event)
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ladanyi@6
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{
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ladanyi@6
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Gnome::Canvas::CanvasAA::on_expose_event(event);
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ladanyi@6
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//usleep(10000);
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ladanyi@6
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//rezoom();
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ladanyi@6
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return true;
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ladanyi@6
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}
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ladanyi@6
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ladanyi@6
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void GraphDisplayerCanvas::zoomIn()
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ladanyi@6
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{
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ladanyi@6
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260 |
set_pixels_per_unit(
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ladanyi@6
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(1.0 + (double) zoom_step / 100.0) * get_pixels_per_unit());
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ladanyi@6
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}
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ladanyi@6
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ladanyi@6
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void GraphDisplayerCanvas::zoomOut()
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ladanyi@6
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{
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ladanyi@6
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266 |
set_pixels_per_unit(
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ladanyi@6
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(1.0 - (double) zoom_step / 100.0) * get_pixels_per_unit());
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ladanyi@6
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}
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ladanyi@6
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ladanyi@6
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void GraphDisplayerCanvas::zoomFit()
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ladanyi@6
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{
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ladanyi@6
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// get the height and width of the canvas
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ladanyi@6
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Gtk::Allocation a = get_allocation();
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ladanyi@6
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int aw = a.get_width();
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ladanyi@6
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int ah = a.get_height();
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ladanyi@6
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// add some space
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ladanyi@6
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aw -= 5; if (aw < 0) aw = 0;
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ladanyi@6
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ah -= 5; if (ah < 0) ah = 0;
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ladanyi@6
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ladanyi@6
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// get the bounding box of the graph
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ladanyi@6
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281 |
double wx1, wy1, wx2, wy2;
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ladanyi@6
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Gnome::Canvas::Item* pCanvasItem = root();
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ladanyi@6
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pCanvasItem->get_bounds(wx1, wy1, wx2, wy2);
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ladanyi@6
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ladanyi@6
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// fit the graph to the window
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ladanyi@7
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286 |
double ppu1 = (double) aw / fabs(wx2 - wx1);
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ladanyi@7
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287 |
double ppu2 = (double) ah / fabs(wy2 - wy1);
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ladanyi@7
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set_pixels_per_unit((ppu1 < ppu2) ? ppu1 : ppu2);
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ladanyi@6
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289 |
}
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ladanyi@6
|
290 |
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ladanyi@6
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void GraphDisplayerCanvas::zoom100()
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ladanyi@6
|
292 |
{
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ladanyi@6
|
293 |
set_pixels_per_unit(1.0);
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ladanyi@6
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}
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ladanyi@6
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ladanyi@6
|
296 |
void GraphDisplayerCanvas::updateScrollRegion()
|
ladanyi@6
|
297 |
{
|
ladanyi@6
|
298 |
double wx1, wy1, wx2, wy2;
|
ladanyi@6
|
299 |
Gnome::Canvas::Item* pCanvasItem = root();
|
ladanyi@6
|
300 |
pCanvasItem->get_bounds(wx1, wy1, wx2, wy2);
|
ladanyi@7
|
301 |
set_scroll_region(wx1, wy1, wx2, wy2);
|
ladanyi@6
|
302 |
}
|
hegyi@9
|
303 |
|
hegyi@9
|
304 |
void GraphDisplayerCanvas::changeEditorialTool(int newtool)
|
hegyi@9
|
305 |
{
|
hegyi@9
|
306 |
actual_handler.disconnect();
|
hegyi@9
|
307 |
|
hegyi@9
|
308 |
switch(newtool)
|
hegyi@9
|
309 |
{
|
hegyi@9
|
310 |
case MOVE:
|
hegyi@9
|
311 |
actual_handler=displayed_graph.signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::move_event_handler), false);
|
hegyi@9
|
312 |
break;
|
hegyi@9
|
313 |
case CREATE_NODE:
|
hegyi@9
|
314 |
actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::create_node_event_handler), false);
|
hegyi@9
|
315 |
break;
|
hegyi@9
|
316 |
case CREATE_EDGE:
|
hegyi@9
|
317 |
actual_handler=displayed_graph.signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::create_edge_event_handler), false);
|
hegyi@9
|
318 |
break;
|
hegyi@9
|
319 |
default:
|
hegyi@9
|
320 |
break;
|
hegyi@9
|
321 |
}
|
hegyi@9
|
322 |
}
|
hegyi@9
|
323 |
|
hegyi@9
|
324 |
bool GraphDisplayerCanvas::move_event_handler(GdkEvent* e)
|
hegyi@9
|
325 |
{
|
hegyi@9
|
326 |
switch(e->type)
|
hegyi@9
|
327 |
{
|
hegyi@9
|
328 |
case GDK_BUTTON_PRESS:
|
hegyi@9
|
329 |
//we mark the location of the event to be able to calculate parameters of dragging
|
hegyi@9
|
330 |
clicked_x=e->button.x;
|
hegyi@9
|
331 |
clicked_y=e->button.y;
|
hegyi@9
|
332 |
active_item=(get_item_at(e->button.x, e->button.y));
|
hegyi@9
|
333 |
active_node=INVALID;
|
hegyi@9
|
334 |
for (NodeIt i(g); i!=INVALID; ++i)
|
hegyi@9
|
335 |
{
|
hegyi@9
|
336 |
if(nodesmap[i]==active_item)
|
hegyi@9
|
337 |
{
|
hegyi@9
|
338 |
active_node=i;
|
hegyi@9
|
339 |
}
|
hegyi@9
|
340 |
}
|
hegyi@9
|
341 |
isbutton=true;
|
hegyi@9
|
342 |
break;
|
hegyi@9
|
343 |
case GDK_BUTTON_RELEASE:
|
hegyi@9
|
344 |
isbutton=false;
|
hegyi@9
|
345 |
active_item=NULL;
|
hegyi@9
|
346 |
updateScrollRegion();
|
hegyi@9
|
347 |
break;
|
hegyi@9
|
348 |
case GDK_MOTION_NOTIFY:
|
hegyi@9
|
349 |
//we only have to do sg. if the mouse button is pressed
|
hegyi@9
|
350 |
if(isbutton)
|
hegyi@9
|
351 |
{
|
hegyi@9
|
352 |
//new coordinates will be the old values,
|
hegyi@9
|
353 |
//because the item will be moved to the
|
hegyi@9
|
354 |
//new coordinate therefore the new movement
|
hegyi@9
|
355 |
//has to be calculated from here
|
hegyi@9
|
356 |
|
hegyi@9
|
357 |
double dx=e->motion.x-clicked_x;
|
hegyi@9
|
358 |
double dy=e->motion.y-clicked_y;
|
hegyi@9
|
359 |
|
hegyi@9
|
360 |
active_item->move(dx, dy);
|
hegyi@9
|
361 |
|
hegyi@9
|
362 |
clicked_x=e->motion.x;
|
hegyi@9
|
363 |
clicked_y=e->motion.y;
|
hegyi@9
|
364 |
|
hegyi@9
|
365 |
//all the edges connected to the moved point has to be redrawn
|
hegyi@9
|
366 |
EdgeIt e;
|
hegyi@9
|
367 |
|
hegyi@9
|
368 |
g.firstOut(e,active_node);
|
hegyi@9
|
369 |
|
hegyi@9
|
370 |
for(;e!=INVALID;g.nextOut(e))
|
hegyi@9
|
371 |
{
|
hegyi@9
|
372 |
Gnome::Canvas::Points coos;
|
hegyi@9
|
373 |
double x1, x2, y1, y2;
|
hegyi@9
|
374 |
|
hegyi@9
|
375 |
nodesmap[g.source(e)]->get_bounds(x1, y1, x2, y2);
|
hegyi@9
|
376 |
coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
|
hegyi@9
|
377 |
|
hegyi@9
|
378 |
nodesmap[g.target(e)]->get_bounds(x1, y1, x2, y2);
|
hegyi@9
|
379 |
coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
|
hegyi@9
|
380 |
|
hegyi@9
|
381 |
edgesmap[e]->property_points().set_value(coos);
|
hegyi@9
|
382 |
|
hegyi@9
|
383 |
edgesmap[e]->get_bounds(x1, y1, x2, y2);
|
hegyi@9
|
384 |
|
hegyi@9
|
385 |
edgetextmap[e]->property_x().set_value((x1+x2)/2);
|
hegyi@9
|
386 |
edgetextmap[e]->property_y().set_value((y1+y2)/2);
|
hegyi@9
|
387 |
}
|
hegyi@9
|
388 |
|
hegyi@9
|
389 |
g.firstIn(e,active_node);
|
hegyi@9
|
390 |
for(;e!=INVALID;g.nextIn(e))
|
hegyi@9
|
391 |
{
|
hegyi@9
|
392 |
Gnome::Canvas::Points coos;
|
hegyi@9
|
393 |
double x1, x2, y1, y2;
|
hegyi@9
|
394 |
|
hegyi@9
|
395 |
nodesmap[g.source(e)]->get_bounds(x1, y1, x2, y2);
|
hegyi@9
|
396 |
coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
|
hegyi@9
|
397 |
|
hegyi@9
|
398 |
nodesmap[g.target(e)]->get_bounds(x1, y1, x2, y2);
|
hegyi@9
|
399 |
coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
|
hegyi@9
|
400 |
|
hegyi@9
|
401 |
edgesmap[e]->property_points().set_value(coos);
|
hegyi@9
|
402 |
|
hegyi@9
|
403 |
edgesmap[e]->get_bounds(x1, y1, x2, y2);
|
hegyi@9
|
404 |
|
hegyi@9
|
405 |
edgetextmap[e]->property_x().set_value((x1+x2)/2);
|
hegyi@9
|
406 |
edgetextmap[e]->property_y().set_value((y1+y2)/2);
|
hegyi@9
|
407 |
}
|
hegyi@9
|
408 |
}
|
hegyi@9
|
409 |
default: break;
|
hegyi@9
|
410 |
}
|
hegyi@9
|
411 |
|
hegyi@9
|
412 |
return true;
|
hegyi@9
|
413 |
}
|
hegyi@9
|
414 |
|
hegyi@9
|
415 |
bool GraphDisplayerCanvas::create_node_event_handler(GdkEvent* e)
|
hegyi@9
|
416 |
{
|
hegyi@9
|
417 |
switch(e->type)
|
hegyi@9
|
418 |
{
|
hegyi@9
|
419 |
case GDK_BUTTON_PRESS:
|
hegyi@9
|
420 |
isbutton=true;
|
hegyi@9
|
421 |
|
hegyi@9
|
422 |
active_node=NodeIt(g,g.addNode());
|
hegyi@9
|
423 |
|
hegyi@9
|
424 |
window_to_world (e->button.x, e->button.y, clicked_x, clicked_y);
|
hegyi@9
|
425 |
|
hegyi@9
|
426 |
nodesmap[active_node]=new Gnome::Canvas::Ellipse(displayed_graph, clicked_x-20, clicked_y-20, clicked_x+20, clicked_y+20);
|
hegyi@9
|
427 |
active_item=(Gnome::Canvas::Item *)(nodesmap[active_node]);
|
hegyi@9
|
428 |
*(nodesmap[active_node]) << Gnome::Canvas::Properties::fill_color("red");
|
hegyi@9
|
429 |
*(nodesmap[active_node]) << Gnome::Canvas::Properties::outline_color("black");
|
hegyi@9
|
430 |
(nodesmap[active_node])->show();
|
hegyi@9
|
431 |
break;
|
hegyi@9
|
432 |
case GDK_MOTION_NOTIFY:
|
hegyi@9
|
433 |
{
|
hegyi@9
|
434 |
double world_motion_x, world_motion_y;
|
hegyi@9
|
435 |
GdkEvent * generated=new GdkEvent();
|
hegyi@9
|
436 |
window_to_world (e->motion.x, e->motion.y, world_motion_x, world_motion_y);
|
hegyi@9
|
437 |
generated->motion.x=world_motion_x;
|
hegyi@9
|
438 |
generated->motion.y=world_motion_y;
|
hegyi@9
|
439 |
generated->type=GDK_MOTION_NOTIFY;
|
hegyi@9
|
440 |
move_event_handler(generated);
|
hegyi@9
|
441 |
break;
|
hegyi@9
|
442 |
}
|
hegyi@9
|
443 |
case GDK_BUTTON_RELEASE:
|
hegyi@9
|
444 |
isbutton=false;
|
hegyi@9
|
445 |
*active_item << Gnome::Canvas::Properties::fill_color("blue");
|
hegyi@9
|
446 |
active_item=NULL;
|
hegyi@9
|
447 |
updateScrollRegion();
|
hegyi@9
|
448 |
break;
|
hegyi@9
|
449 |
default:
|
hegyi@9
|
450 |
break;
|
hegyi@9
|
451 |
}
|
hegyi@9
|
452 |
return false;
|
hegyi@9
|
453 |
}
|
hegyi@9
|
454 |
|
hegyi@9
|
455 |
bool GraphDisplayerCanvas::create_edge_event_handler(GdkEvent* e)
|
hegyi@9
|
456 |
{
|
hegyi@11
|
457 |
switch(e->type)
|
hegyi@11
|
458 |
{
|
hegyi@11
|
459 |
case GDK_BUTTON_PRESS:
|
hegyi@11
|
460 |
if(!active_item)
|
hegyi@11
|
461 |
{
|
hegyi@11
|
462 |
//we mark the location of the event to be able to calculate parameters of dragging
|
hegyi@11
|
463 |
clicked_x=e->button.x;
|
hegyi@11
|
464 |
clicked_y=e->button.y;
|
hegyi@11
|
465 |
active_item=(get_item_at(e->button.x, e->button.y));
|
hegyi@11
|
466 |
active_node=INVALID;
|
hegyi@11
|
467 |
for (NodeIt i(g); i!=INVALID; ++i)
|
hegyi@11
|
468 |
{
|
hegyi@11
|
469 |
if(nodesmap[i]==active_item)
|
hegyi@11
|
470 |
{
|
hegyi@11
|
471 |
active_node=i;
|
hegyi@11
|
472 |
}
|
hegyi@11
|
473 |
}
|
hegyi@11
|
474 |
*(nodesmap[active_node]) << Gnome::Canvas::Properties::fill_color("red");
|
hegyi@11
|
475 |
isbutton=true;
|
hegyi@11
|
476 |
}
|
hegyi@11
|
477 |
else
|
hegyi@11
|
478 |
{
|
hegyi@11
|
479 |
target_item=(get_item_at(e->button.x, e->button.y));
|
hegyi@11
|
480 |
Graph::NodeIt target_node=INVALID;
|
hegyi@11
|
481 |
for (NodeIt i(g); i!=INVALID; ++i)
|
hegyi@11
|
482 |
{
|
hegyi@11
|
483 |
if(nodesmap[i]==target_item)
|
hegyi@11
|
484 |
{
|
hegyi@11
|
485 |
target_node=i;
|
hegyi@11
|
486 |
}
|
hegyi@11
|
487 |
}
|
hegyi@11
|
488 |
*(nodesmap[target_node]) << Gnome::Canvas::Properties::fill_color("red");
|
hegyi@11
|
489 |
|
hegyi@11
|
490 |
//creating new edge
|
hegyi@11
|
491 |
// Graph::Edge new_edge=g.addEdge(active_node, target_node);
|
hegyi@11
|
492 |
active_edge=EdgeIt(g,g.addEdge(active_node, target_node));
|
hegyi@11
|
493 |
|
hegyi@11
|
494 |
//calculating coordinates of new edge
|
hegyi@11
|
495 |
Gnome::Canvas::Points coos;
|
hegyi@11
|
496 |
double x1, x2, y1, y2;
|
hegyi@11
|
497 |
|
hegyi@11
|
498 |
active_item->get_bounds(x1, y1, x2, y2);
|
hegyi@11
|
499 |
coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
|
hegyi@11
|
500 |
|
hegyi@11
|
501 |
target_item->get_bounds(x1, y1, x2, y2);
|
hegyi@11
|
502 |
coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
|
hegyi@11
|
503 |
|
hegyi@11
|
504 |
//drawing new edge
|
hegyi@11
|
505 |
edgesmap[active_edge]=new Gnome::Canvas::Line(displayed_graph, coos);
|
hegyi@11
|
506 |
*(edgesmap[active_edge]) << Gnome::Canvas::Properties::fill_color("green");
|
hegyi@11
|
507 |
edgesmap[active_edge]->property_width_pixels().set_value(10);
|
hegyi@11
|
508 |
|
hegyi@11
|
509 |
//redraw nodes to blank terminations of the new edge
|
hegyi@11
|
510 |
target_item->raise_to_top();
|
hegyi@11
|
511 |
active_item->raise_to_top();
|
hegyi@11
|
512 |
|
hegyi@11
|
513 |
//initializing edge-text as well, to empty string
|
hegyi@11
|
514 |
edgesmap[active_edge]->get_bounds(x1, y1, x2, y2);
|
hegyi@11
|
515 |
edgetextmap[active_edge]=new Gnome::Canvas::Text(displayed_graph,(x1+x2)/2, (y1+y2)/2, "");
|
hegyi@11
|
516 |
edgetextmap[active_edge]->property_fill_color().set_value("black");
|
hegyi@11
|
517 |
}
|
hegyi@11
|
518 |
break;
|
hegyi@11
|
519 |
case GDK_BUTTON_RELEASE:
|
hegyi@11
|
520 |
isbutton=false;
|
hegyi@11
|
521 |
if(target_item)
|
hegyi@11
|
522 |
{
|
hegyi@11
|
523 |
*active_item << Gnome::Canvas::Properties::fill_color("blue");
|
hegyi@11
|
524 |
*target_item << Gnome::Canvas::Properties::fill_color("blue");
|
hegyi@11
|
525 |
active_item=NULL;
|
hegyi@11
|
526 |
target_item=NULL;
|
hegyi@11
|
527 |
}
|
hegyi@11
|
528 |
break;
|
hegyi@11
|
529 |
default:
|
hegyi@11
|
530 |
break;
|
hegyi@11
|
531 |
}
|
hegyi@9
|
532 |
return false;
|
hegyi@9
|
533 |
}
|
hegyi@9
|
534 |
|