source: lemon-0.x/gui/graph_displayer_canvas-node.cc @ 1630:f67737f5727a

#include "graph_displayer_canvas.h"
#include "broken_edge.h"
#include <math.h>


int GraphDisplayerCanvas::changeNodeRadius (std::string mapname, Graph::Node node)
{
  Graph::NodeMap<double> * actual_map;
  double min, max;
  if(mapname=="Default")
    {
      min=node_property_defaults[N_RADIUS];
      max=node_property_defaults[N_RADIUS];
      actual_map=new Graph::NodeMap<double>(mapstorage.graph,node_property_defaults[N_RADIUS]);
    }
  else
    {
      min=mapstorage.minOfNodeMap(mapname);
      max=mapstorage.maxOfNodeMap(mapname);
      actual_map=(mapstorage.nodemap_storage)[mapname];
    }

  if(node==INVALID)
    {
      for (NodeIt i(mapstorage.graph); i!=INVALID; ++i)
        {
          double v=fabs((*actual_map)[i]);
          int w;
          if(min==max)
            {
              w=(int)(node_property_defaults[N_RADIUS]);
            }
          else
            {
              w=(int)(MIN_NODE_RADIUS+(v-min)/(max-min)*(MAX_NODE_RADIUS-MIN_NODE_RADIUS));
            }
          if(w>=0)
            {
              double x1, y1, x2, y2;
              x1=nodesmap[i]->property_x1().get_value();
              x2=nodesmap[i]->property_x2().get_value();
              y1=nodesmap[i]->property_y1().get_value();
              y2=nodesmap[i]->property_y2().get_value();
              nodesmap[i]->property_x1().set_value((x1+x2)/2-w);
              nodesmap[i]->property_x2().set_value((x1+x2)/2+w);
              nodesmap[i]->property_y1().set_value((y1+y2)/2-w);
              nodesmap[i]->property_y2().set_value((y1+y2)/2+w);
            }
        }
    }
  else
    {
      //I think only new nodes use this case
//       int w=(int)(*actual_map)[node];
      int w=(int)(node_property_defaults[N_RADIUS]);
      if(w>=0)
        {
          double x1, y1, x2, y2;
          x1=nodesmap[node]->property_x1().get_value();
          x2=nodesmap[node]->property_x2().get_value();
          y1=nodesmap[node]->property_y1().get_value();
          y2=nodesmap[node]->property_y2().get_value();
          nodesmap[node]->property_x1().set_value((x1+x2)/2-w);
          nodesmap[node]->property_x2().set_value((x1+x2)/2+w);
          nodesmap[node]->property_y1().set_value((y1+y2)/2-w);
          nodesmap[node]->property_y2().set_value((y1+y2)/2+w);
        }
    }
  return 0;
};

int GraphDisplayerCanvas::changeNodeColor (std::string mapname, Graph::Node node)
{  

  //function maps the range of the maximum and
  //the minimum of the nodemap to the range of
  //green in RGB

  Graph::NodeMap<double> * actual_map;
  if(mapname=="Default")
    {
      actual_map=new Graph::NodeMap<double>(mapstorage.graph,node_property_defaults[N_COLOR]);
    }
  else
    {
      actual_map=(mapstorage.nodemap_storage)[mapname];
    }

  double max, min;

  if(mapname!="Default")
    {
      max=mapstorage.maxOfNodeMap(mapname);
      min=mapstorage.minOfNodeMap(mapname);
    }
  else
    {
      max=node_property_defaults[N_COLOR];
      min=node_property_defaults[N_COLOR];
    }


  if(node==INVALID)
    {

      for (NodeIt i(mapstorage.graph); i!=INVALID; ++i)
        {
          Gdk::Color color;

          double w=(*actual_map)[i];

          if(max!=min)
            {
              color.set_rgb_p (0, 0, 100*(w-min)/(max-min));
            }
          else
            {
              color.set_rgb_p (0, 0, 100);
            }

          nodesmap[i]->property_fill_color_gdk().set_value(color);
        }
    }
  else
    {
      Gdk::Color color;

      double w=(*actual_map)[node];

      if(max!=min)
        {
          color.set_rgb_p (0, 0, 100*(w-min)/(max-min));
        }
      else
        {
          color.set_rgb_p (0, 0, 100);
        }

      nodesmap[node]->property_fill_color_gdk().set_value(color);
    }
  return 0;
};

int GraphDisplayerCanvas::changeNodeText (std::string mapname, Graph::Node node)
{

  //the number in the map will be written on the node
  //EXCEPT when the name of the map is Text, because
  //in that case empty string will be written, because
  //that is the deleter map

  Graph::NodeMap<double> * actual_map=NULL;
  if(mapname!="Default")
    {
      actual_map=(mapstorage.nodemap_storage)[mapname];
    }

  if(node==INVALID)
    {
      for (NodeIt i(mapstorage.graph); i!=INVALID; ++i)
        {
          if(mapname!="Default")
            {
              nodemap_to_edit=mapname;
              double number=(*actual_map)[i];

              std::ostringstream ostr;
              ostr << number;
              
              nodetextmap[i]->property_text().set_value(ostr.str());
            }
          else
            {
              nodemap_to_edit="";
              nodetextmap[i]->property_text().set_value("");
            }
        }
    }
  else
    {
      if(mapname!="Default")
        {
          double number=(*actual_map)[node];

          std::ostringstream ostr;
          ostr << number;
              
          nodetextmap[node]->property_text().set_value(ostr.str());
        }
      else
        {
          nodetextmap[node]->property_text().set_value("");
        }
    }
  return 0;
};