ladanyi@6: #include <graph_displayer_canvas.h>
ladanyi@6: #include <math.h>
ladanyi@6: 
ladanyi@6: 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)
ladanyi@6: {
ladanyi@6:   //set_center_scroll_region(true);
ladanyi@6: 
ladanyi@6:   //first edges are drawn, to hide joining with nodes later
ladanyi@6: 
ladanyi@6:   for (EdgeIt i(g); i!=INVALID; ++i)
ladanyi@6:   {
ladanyi@6: 
ladanyi@6:     //drawing green lines, coordinates are from cm
ladanyi@6: 
ladanyi@6:     Gnome::Canvas::Points coos;
ladanyi@6:     coos.push_back(Gnome::Art::Point(cm[g.source(i)].x,cm[g.source(i)].y));
ladanyi@6:     coos.push_back(Gnome::Art::Point(cm[g.target(i)].x,cm[g.target(i)].y));
ladanyi@6:     
ladanyi@6:     edgesmap[i]=new Gnome::Canvas::Line(displayed_graph, coos);
ladanyi@6:     *(edgesmap[i]) << Gnome::Canvas::Properties::fill_color("green");
ladanyi@6:     edgesmap[i]->property_width_pixels().set_value(10);    
ladanyi@6:     
ladanyi@6:     //initializing edge-text as well, to empty string
ladanyi@6: 
ladanyi@6:     double x1, x2, y1, y2;
ladanyi@6:     edgesmap[i]->get_bounds(x1, y1, x2, y2);
ladanyi@6:     
ladanyi@6:     edgetextmap[i]=new Gnome::Canvas::Text(displayed_graph,(x1+x2)/2, (y1+y2)/2, "");
ladanyi@6:     edgetextmap[i]->property_fill_color().set_value("black");
ladanyi@6:   }
ladanyi@6: 
ladanyi@6:   //afterwards nodes come to be drawn
ladanyi@6: 
ladanyi@6:   NodeIt i(g);
ladanyi@6:   int maxx=0, maxy=0, minx=(int)cm[i].x, miny=(int)cm[i].y;
ladanyi@6: 
ladanyi@6:   for (; i!=INVALID; ++i)
ladanyi@6:   {
ladanyi@6:     //minimum and maximum is gathered to be able to zoom to the graph correctly (whole figure should be seen)
ladanyi@6: 
ladanyi@6:     if(cm[i].x>maxx)maxx=(int)cm[i].x;
ladanyi@6:     if(cm[i].y>maxy)maxy=(int)cm[i].y;
ladanyi@6:     if(cm[i].x<minx)minx=(int)cm[i].x;
ladanyi@6:     if(cm[i].y<miny)miny=(int)cm[i].y;
ladanyi@6: 
ladanyi@6:     //drawing bule nodes, with black line around them
ladanyi@6: 
ladanyi@6:     nodesmap[i]=new Gnome::Canvas::Ellipse(displayed_graph, cm[i].x-20, cm[i].y-20, cm[i].x+20, cm[i].y+20);
ladanyi@6:     *(nodesmap[i]) << Gnome::Canvas::Properties::fill_color("blue");
ladanyi@6:     *(nodesmap[i]) << Gnome::Canvas::Properties::outline_color("black");
ladanyi@6:     (nodesmap[i])->signal_event().connect(sigc::bind(sigc::mem_fun(*this, &GraphDisplayerCanvas::event_handler),i));
ladanyi@6:   }
ladanyi@6: 
ladanyi@6: /*
ladanyi@6:   //setting zoom to be able to see the whole graph on the canvas
ladanyi@6: 
ladanyi@6:   double biggest_x=(abs(maxx)>abs(minx))?(abs(maxx)+80):(abs(minx)+80);
ladanyi@6:   double biggest_y=(abs(maxy)>abs(miny))?(abs(maxy)+80):(abs(miny)+80);
ladanyi@6: 
ladanyi@6:   set_pixels_per_unit((biggest_x>biggest_y)?(WIN_WIDTH/biggest_x/2):(WIN_HEIGHT/biggest_y/2));
ladanyi@6:   std::cout<<abs(maxx)<<" "<<abs(minx)<<" big x "<<biggest_x<<" "<<abs(maxy)<<" "<<abs(miny)<<" big y "<<biggest_y<<std::endl;
ladanyi@6:   std::cout<<maxx<<" "<<minx<<" big x "<<biggest_x<<" "<<maxy<<" "<<miny<<" big y "<<biggest_y<<std::endl;
ladanyi@6:   std::cout<<"dx "<<(maxx-minx)<<" dy "<<(maxy-miny)<<" xrate "<<((maxx-minx)/WIN_WIDTH)<<" yrate "<<((maxy-miny)/WIN_HEIGHT)<<std::endl;
ladanyi@6: */
ladanyi@6:   updateScrollRegion();
ladanyi@6: }
ladanyi@6: 
ladanyi@6: GraphDisplayerCanvas::~GraphDisplayerCanvas()
ladanyi@6: {
ladanyi@6: 
ladanyi@6:   //writing out the end state of the graph
ladanyi@6:   //\todo all the maps has to be write out!
ladanyi@6: 
ladanyi@6:   Graph::NodeMap <int> id(g);
ladanyi@6:   Graph::NodeMap <double> xc(g);
ladanyi@6:   Graph::NodeMap <double> yc(g);
ladanyi@6:   
ladanyi@6:   int j=1;
ladanyi@6:   
ladanyi@6:   for (NodeIt i(g); i!=INVALID; ++i)
ladanyi@6:   {
ladanyi@6:     double x1,y1,x2,y2;
ladanyi@6:     nodesmap[i]->get_bounds(x1, y1, x2, y2);
ladanyi@6:     
ladanyi@6:     id[i]=j++;
ladanyi@6:     xc[i]=(x1+x2)/2;
ladanyi@6:     yc[i]=(y1+y2)/2;
ladanyi@6:   }
ladanyi@6: 
ladanyi@6:   GraphWriter<Graph> writer(std::cout,g);
ladanyi@6:   
ladanyi@6:   writer.writeNodeMap("id", id);
ladanyi@6:   writer.writeNodeMap("coordinates_x", xc);
ladanyi@6:   writer.writeNodeMap("coordinates_y", yc);
ladanyi@6:   writer.run();
ladanyi@6: }
ladanyi@6: 
ladanyi@6: int GraphDisplayerCanvas::changeLineWidth (std::string mapname)
ladanyi@6: {
ladanyi@6:   for (EdgeIt i(g); i!=INVALID; ++i)
ladanyi@6:   {
ladanyi@6:     int w=(int)(*(mapstorage.edgemap_storage)[mapname])[i];
ladanyi@6:     edgesmap[i]->property_width_pixels().set_value(w);
ladanyi@6:   }
ladanyi@6:   return 0;
ladanyi@6: };
ladanyi@6: 
ladanyi@6: int GraphDisplayerCanvas::changeColor (std::string mapname)
ladanyi@6: {  
ladanyi@6: 
ladanyi@6:   //function maps the range of the maximum and
ladanyi@6:   //the minimum of the nodemap to the range of
ladanyi@6:   //green in RGB
ladanyi@6: 
ladanyi@6:   for (EdgeIt i(g); i!=INVALID; ++i)
ladanyi@6:   {
ladanyi@6:     double w=(*(mapstorage.edgemap_storage)[mapname])[i];
ladanyi@6:     double max=mapstorage.maxOfEdgeMap(mapname);
ladanyi@6:     double min=mapstorage.minOfEdgeMap(mapname);
ladanyi@6:       
ladanyi@6:     //std::cout<<w<<" "<<max<<" "<<min<<" "<<100*(w-min)/(max-min)<<std::endl;
ladanyi@6:     Gdk::Color color;
ladanyi@6:     if(max!=min)
ladanyi@6:     {
ladanyi@6:       color.set_rgb_p (0, 100*(w-min)/(max-min), 0);
ladanyi@6:     }
ladanyi@6:     else
ladanyi@6:     {
ladanyi@6:       color.set_rgb_p (0, 100, 0);
ladanyi@6:     }
ladanyi@6: 
ladanyi@6:     edgesmap[i]->property_fill_color_gdk().set_value(color);
ladanyi@6:   }
ladanyi@6:   return 0;
ladanyi@6: };
ladanyi@6: 
ladanyi@6: int GraphDisplayerCanvas::changeText (std::string mapname)
ladanyi@6: {
ladanyi@6: 
ladanyi@6:   //the number in the map will be written on the edge
ladanyi@6:   //EXCEPT when the name of the map is Text, because
ladanyi@6:   //in that case empty string will be written, because
ladanyi@6:   //that is the deleter map
ladanyi@6:   //\todo isn't it a bit woodcutter?
ladanyi@6: 
ladanyi@6:   for (EdgeIt i(g); i!=INVALID; ++i)
ladanyi@6:   {
ladanyi@6:     if(mapname!="Text")
ladanyi@6:     {
ladanyi@6:       double number=(*(mapstorage.edgemap_storage)[mapname])[i];
ladanyi@6:       int length=(int)(floor(log(number)/log(10)))+1;
ladanyi@6:       int maxpos=(int)(pow(10,length-1));
ladanyi@6:       int strl=length+1+RANGE;
ladanyi@6:       char * str=new char[strl];
ladanyi@6:       str[length]='.';
ladanyi@6:       str[strl]='\0';
ladanyi@6:       
ladanyi@6:       for(int j=0;j<strl;j++)
ladanyi@6:       {
ladanyi@6: 	if(j!=length)
ladanyi@6:         {
ladanyi@6: 	  int digit=(int)(number/maxpos);
ladanyi@6: 	  str[j]=(digit+'0');
ladanyi@6: 	  number-=digit*maxpos;
ladanyi@6: 	  number*=10;
ladanyi@6:         }
ladanyi@6:       }
ladanyi@6:       
ladanyi@6:       edgetextmap[i]->property_text().set_value(str);
ladanyi@6:     }
ladanyi@6:     else
ladanyi@6:     {
ladanyi@6:       edgetextmap[i]->property_text().set_value("");
ladanyi@6:     }
ladanyi@6:   }
ladanyi@6:   return 0;
ladanyi@6: };
ladanyi@6: 
ladanyi@6: bool GraphDisplayerCanvas::event_handler(GdkEvent* e, Node n)
ladanyi@6: {
ladanyi@6:   switch(e->type)
ladanyi@6:   {
ladanyi@6:     case GDK_BUTTON_PRESS:
ladanyi@6:       //we mark the location of the event to be able to calculate parameters of dragging
ladanyi@6:       clicked_x=e->button.x;
ladanyi@6:       clicked_y=e->button.y;
ladanyi@6:       active_item=(get_item_at(e->button.x, e->button.y));
ladanyi@6:       isbutton=true;
ladanyi@6:       break;
ladanyi@6:     case GDK_BUTTON_RELEASE:
ladanyi@6:       isbutton=false;
ladanyi@6:       active_item=NULL;
ladanyi@7:       updateScrollRegion();
ladanyi@6:       break;
ladanyi@6:     case GDK_MOTION_NOTIFY:
ladanyi@6:       //we only have to do sg. if the mouse button is pressed
ladanyi@6:       if(isbutton)
ladanyi@6:       {
ladanyi@6: 	//new coordinates will be the old values,
ladanyi@6: 	//because the item will be moved to the
ladanyi@6: 	//new coordinate therefore the new movement
ladanyi@6: 	//has to be calculated from here
ladanyi@6: 
ladanyi@6:         double dx=e->motion.x-clicked_x;
ladanyi@6:         double dy=e->motion.y-clicked_y;
ladanyi@6:         active_item->move(dx, dy);
ladanyi@6:         clicked_x=e->motion.x;
ladanyi@6:         clicked_y=e->motion.y;
ladanyi@6: 
ladanyi@6: 	//all the edges connected to the moved point has to be redrawn
ladanyi@6: 
ladanyi@6:         EdgeIt e;
ladanyi@6:         g.firstOut(e,n);
ladanyi@6:         for(;e!=INVALID;g.nextOut(e))
ladanyi@6:         {
ladanyi@6:             Gnome::Canvas::Points coos;
ladanyi@6:             double x1, x2, y1, y2;
ladanyi@6: 
ladanyi@6:             nodesmap[g.source(e)]->get_bounds(x1, y1, x2, y2);
ladanyi@6:             coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
ladanyi@6: 
ladanyi@6:             nodesmap[g.target(e)]->get_bounds(x1, y1, x2, y2);
ladanyi@6:             coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
ladanyi@6: 
ladanyi@6:             edgesmap[e]->property_points().set_value(coos);
ladanyi@6: 
ladanyi@6: 	    edgesmap[e]->get_bounds(x1, y1, x2, y2);
ladanyi@6: 
ladanyi@6: 	    edgetextmap[e]->property_x().set_value((x1+x2)/2);
ladanyi@6: 	    edgetextmap[e]->property_y().set_value((y1+y2)/2);
ladanyi@6:         }
ladanyi@6: 
ladanyi@6:         g.firstIn(e,n);
ladanyi@6:         for(;e!=INVALID;g.nextIn(e))
ladanyi@6:         {
ladanyi@6:             Gnome::Canvas::Points coos;
ladanyi@6:             double x1, x2, y1, y2;
ladanyi@6: 
ladanyi@6:             nodesmap[g.source(e)]->get_bounds(x1, y1, x2, y2);
ladanyi@6:             coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
ladanyi@6: 
ladanyi@6:             nodesmap[g.target(e)]->get_bounds(x1, y1, x2, y2);
ladanyi@6:             coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
ladanyi@6: 
ladanyi@6:             edgesmap[e]->property_points().set_value(coos);
ladanyi@6: 
ladanyi@6: 	    edgesmap[e]->get_bounds(x1, y1, x2, y2);
ladanyi@6: 
ladanyi@6: 	    edgetextmap[e]->property_x().set_value((x1+x2)/2);
ladanyi@6: 	    edgetextmap[e]->property_y().set_value((y1+y2)/2);
ladanyi@6:         }
ladanyi@6:       }
ladanyi@6:     default: break;
ladanyi@6:   }
ladanyi@6:   return true;
ladanyi@6: }
ladanyi@6: 
ladanyi@6: bool GraphDisplayerCanvas::on_expose_event(GdkEventExpose *event)
ladanyi@6: {
ladanyi@6:   Gnome::Canvas::CanvasAA::on_expose_event(event);
ladanyi@6:   //usleep(10000);
ladanyi@6:   //rezoom();
ladanyi@6:   return true;
ladanyi@6: }
ladanyi@6: 
ladanyi@6: void GraphDisplayerCanvas::zoomIn()
ladanyi@6: {
ladanyi@6:   set_pixels_per_unit(
ladanyi@6:       (1.0 + (double) zoom_step / 100.0) * get_pixels_per_unit());
ladanyi@6: }
ladanyi@6: 
ladanyi@6: void GraphDisplayerCanvas::zoomOut()
ladanyi@6: {
ladanyi@6:   set_pixels_per_unit(
ladanyi@6:       (1.0 - (double) zoom_step / 100.0) * get_pixels_per_unit());
ladanyi@6: }
ladanyi@6: 
ladanyi@6: void GraphDisplayerCanvas::zoomFit()
ladanyi@6: {
ladanyi@6:   // get the height and width of the canvas
ladanyi@6:   Gtk::Allocation a = get_allocation();
ladanyi@6:   int aw = a.get_width();
ladanyi@6:   int ah = a.get_height();
ladanyi@6:   // add some space
ladanyi@6:   aw -= 5; if (aw < 0) aw = 0;
ladanyi@6:   ah -= 5; if (ah < 0) ah = 0;
ladanyi@6: 
ladanyi@6:   // get the bounding box of the graph
ladanyi@6:   double wx1, wy1, wx2, wy2;
ladanyi@6:   Gnome::Canvas::Item* pCanvasItem = root();
ladanyi@6:   pCanvasItem->get_bounds(wx1, wy1, wx2, wy2);
ladanyi@6: 
ladanyi@6:   // fit the graph to the window
ladanyi@7:   double ppu1 = (double) aw / fabs(wx2 - wx1);
ladanyi@7:   double ppu2 = (double) ah / fabs(wy2 - wy1);
ladanyi@7:   set_pixels_per_unit((ppu1 < ppu2) ? ppu1 : ppu2);
ladanyi@6: }
ladanyi@6: 
ladanyi@6: void GraphDisplayerCanvas::zoom100()
ladanyi@6: {
ladanyi@6:   set_pixels_per_unit(1.0);
ladanyi@6: }
ladanyi@6: 
ladanyi@6: void GraphDisplayerCanvas::updateScrollRegion()
ladanyi@6: {
ladanyi@6:   double wx1, wy1, wx2, wy2;
ladanyi@6:   Gnome::Canvas::Item* pCanvasItem = root();
ladanyi@6:   pCanvasItem->get_bounds(wx1, wy1, wx2, wy2);
ladanyi@7:   set_scroll_region(wx1, wy1, wx2, wy2);
ladanyi@6: }