gui/graph_displayer_canvas.cc
author ladanyi
Mon, 23 May 2005 04:48:14 +0000
changeset 1435 8e85e6bbefdf
parent 1412 src/gui/graph_displayer_canvas.cc@c7fab5a1174a
child 1440 3d2e3cfb2a6c
permissions -rwxr-xr-x
trunk/src/* move to trunk/
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#include <graph_displayer_canvas.h>
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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)
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{
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  for (EdgeIt i(g); i!=INVALID; ++i)
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  {
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    Gnome::Canvas::Points coos;
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    coos.push_back(Gnome::Art::Point(cm[g.source(i)].x,cm[g.source(i)].y));
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    coos.push_back(Gnome::Art::Point(cm[g.target(i)].x,cm[g.target(i)].y));
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    edgesmap[i]=new Gnome::Canvas::Line(displayed_graph, coos);
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    *(edgesmap[i]) << Gnome::Canvas::Properties::fill_color("green");
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    edgesmap[i]->property_width_pixels().set_value(10);
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    double x1, x2, y1, y2;
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    edgesmap[i]->get_bounds(x1, y1, x2, y2);
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    edgetextmap[i]=new Gnome::Canvas::Text(displayed_graph,(x1+x2)/2, (y1+y2)/2, "");
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    edgetextmap[i]->property_fill_color().set_value("black");
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  }
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  NodeIt i(g);
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  int maxx=0, maxy=0, minx=(int)cm[i].x, miny=(int)cm[i].y;
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  for (; i!=INVALID; ++i)
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  {
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    if(cm[i].x>maxx)maxx=(int)cm[i].x;
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    if(cm[i].y>maxy)maxy=(int)cm[i].y;
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    if(cm[i].x<minx)minx=(int)cm[i].x;
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    if(cm[i].y<miny)miny=(int)cm[i].y;
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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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    *(nodesmap[i]) << Gnome::Canvas::Properties::fill_color("blue");
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    *(nodesmap[i]) << Gnome::Canvas::Properties::outline_color("black");
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    (nodesmap[i])->signal_event().connect(sigc::bind(sigc::mem_fun(*this, &GraphDisplayerCanvas::event_handler),i));
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  }
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  double biggest_x=(abs(maxx)>abs(minx))?(abs(maxx)+80):(abs(minx)+80);
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  double biggest_y=(abs(maxy)>abs(miny))?(abs(maxy)+80):(abs(miny)+80);
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  set_pixels_per_unit((biggest_x>biggest_y)?(WIN_WIDTH/biggest_x/2):(WIN_HEIGHT/biggest_y/2));
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  std::cout<<abs(maxx)<<" "<<abs(minx)<<" big x "<<biggest_x<<" "<<abs(maxy)<<" "<<abs(miny)<<" big y "<<biggest_y<<std::endl;
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  std::cout<<maxx<<" "<<minx<<" big x "<<biggest_x<<" "<<maxy<<" "<<miny<<" big y "<<biggest_y<<std::endl;
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  std::cout<<"dx "<<(maxx-minx)<<" dy "<<(maxy-miny)<<" xrate "<<((maxx-minx)/WIN_WIDTH)<<" yrate "<<((maxy-miny)/WIN_HEIGHT)<<std::endl;
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}
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GraphDisplayerCanvas::~GraphDisplayerCanvas()
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{
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    Graph::NodeMap <int> id(g);
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    Graph::NodeMap <double> xc(g);
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    Graph::NodeMap <double> yc(g);
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    int j=1;
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    for (NodeIt i(g); i!=INVALID; ++i)
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    {
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        double x1,y1,x2,y2;
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        nodesmap[i]->get_bounds(x1, y1, x2, y2);
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        id[i]=j++;
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        xc[i]=(x1+x2)/2;
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        yc[i]=(y1+y2)/2;
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    }
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    GraphWriter<Graph> writer(std::cout,g);
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    writer.writeNodeMap("id", id);
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    writer.writeNodeMap("coordinates_x", xc);
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    writer.writeNodeMap("coordinates_y", yc);
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    writer.run();
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}
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int GraphDisplayerCanvas::changeLineWidth (std::string mapname)
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{
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  for (EdgeIt i(g); i!=INVALID; ++i)
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  {
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    int w=(int)(*(mapstorage.edgemap_storage)[mapname])[i];
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    edgesmap[i]->property_width_pixels().set_value(w);
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  }
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  return 0;
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};
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int GraphDisplayerCanvas::changeColor (std::string mapname)
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{  
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  for (EdgeIt i(g); i!=INVALID; ++i)
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  {
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    double w=(*(mapstorage.edgemap_storage)[mapname])[i];
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    double max=mapstorage.maxOfEdgeMap(mapname);
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    double min=mapstorage.minOfEdgeMap(mapname);
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    //std::cout<<w<<" "<<max<<" "<<min<<" "<<100*(w-min)/(max-min)<<std::endl;
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    Gdk::Color color;
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    if(max!=min)
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    {
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      color.set_rgb_p (0, 100*(w-min)/(max-min), 0);
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    }
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    else
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    {
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      color.set_rgb_p (0, 100, 0);
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    }
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    edgesmap[i]->property_fill_color_gdk().set_value(color);
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  }
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  return 0;
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};
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int GraphDisplayerCanvas::changeText (std::string mapname)
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{
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  for (EdgeIt i(g); i!=INVALID; ++i)
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  {
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    if(mapname!="Text")
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    {
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      double number=(*(mapstorage.edgemap_storage)[mapname])[i];
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      int length=(int)(floor(log(number)/log(10)))+1;
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      int maxpos=(int)(pow(10,length-1));
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      int strl=length+1+RANGE;
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      char * str=new char[strl];
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      str[length]='.';
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      str[strl]='\0';
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      for(int j=0;j<strl;j++)
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      {
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	if(j!=length)
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        {
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	  int digit=(int)(number/maxpos);
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	  str[j]=(digit+'0');
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	  number-=digit*maxpos;
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	  number*=10;
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        }
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      }
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      edgetextmap[i]->property_text().set_value(str);
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    }
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    else
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    {
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      edgetextmap[i]->property_text().set_value("");
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    }
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  }
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  return 0;
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};
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int GraphDisplayerCanvas::rezoom ()
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{
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  double x1, x2, y1, y2;
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  int x,y;
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  NodeIt i(g);
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  nodesmap[i]->get_bounds(x1, y1, x2, y2);
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  x=(int)((x1+x2)/2);
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  y=(int)((y1+y2)/2);
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  int maxx=0, maxy=0, minx=(int)x, miny=(int)y;
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  for (; i!=INVALID; ++i)
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  {
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    nodesmap[i]->get_bounds(x1, y1, x2, y2);
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    x=(int)((x1+x2)/2);
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    y=(int)((y1+y2)/2);
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    if(x>maxx)maxx=x;
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    if(y>maxy)maxy=y;
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    if(x<minx)minx=x;
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    if(y<miny)miny=y;
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  }
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  double biggest_x=(abs(maxx)>abs(minx))?(abs(maxx)+80):(abs(minx)+80);
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  double biggest_y=(abs(maxy)>abs(miny))?(abs(maxy)+80):(abs(miny)+80);
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  set_pixels_per_unit((biggest_x-WIN_WIDTH>biggest_y-WIN_HEIGHT)?(WIN_WIDTH/biggest_x/2):(WIN_HEIGHT/biggest_y/2));
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  return 0;
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};
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///This function moves only one node of displayed_graph,
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///but recalculate the location of weight point,
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///and also redraw the sides of the planefigure.
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bool GraphDisplayerCanvas::event_handler(GdkEvent* e, Node n)
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{
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  switch(e->type)
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  {
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    case GDK_BUTTON_PRESS:
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      clicked_x=e->button.x;
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      clicked_y=e->button.y;
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      active_item=(get_item_at(e->button.x, e->button.y));
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      isbutton=true;
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      break;
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    case GDK_BUTTON_RELEASE:
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      isbutton=false;
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      active_item=NULL;
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      break;
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    case GDK_MOTION_NOTIFY:
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      if(isbutton)
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      {
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        double dx=e->motion.x-clicked_x;
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        double dy=e->motion.y-clicked_y;
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        active_item->move(dx, dy);
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        clicked_x=e->motion.x;
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        clicked_y=e->motion.y;
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        EdgeIt e;
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        g.firstOut(e,n);
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        for(;e!=INVALID;g.nextOut(e))
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        {
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            Gnome::Canvas::Points coos;
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            double x1, x2, y1, y2;
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            nodesmap[g.source(e)]->get_bounds(x1, y1, x2, y2);
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            coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
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            nodesmap[g.target(e)]->get_bounds(x1, y1, x2, y2);
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            coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
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            edgesmap[e]->property_points().set_value(coos);
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	    edgesmap[e]->get_bounds(x1, y1, x2, y2);
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	    edgetextmap[e]->property_x().set_value((x1+x2)/2);
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	    edgetextmap[e]->property_y().set_value((y1+y2)/2);
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        }
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        g.firstIn(e,n);
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        for(;e!=INVALID;g.nextIn(e))
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        {
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            Gnome::Canvas::Points coos;
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            double x1, x2, y1, y2;
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            nodesmap[g.source(e)]->get_bounds(x1, y1, x2, y2);
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            coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
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            nodesmap[g.target(e)]->get_bounds(x1, y1, x2, y2);
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            coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
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            edgesmap[e]->property_points().set_value(coos);
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	    edgesmap[e]->get_bounds(x1, y1, x2, y2);
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	    edgetextmap[e]->property_x().set_value((x1+x2)/2);
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	    edgetextmap[e]->property_y().set_value((y1+y2)/2);
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        }
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      }
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    default: break;
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  }
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  return true;
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}
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bool GraphDisplayerCanvas::on_expose_event(GdkEventExpose *event)
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{
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  Gnome::Canvas::CanvasAA::on_expose_event(event);
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  //usleep(10000);
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  //rezoom();
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  return true;
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}