source: lemon-0.x/gui/graph_displayer_canvas-edge.cc @ 1829:183b4cbf9733

#include "graph_displayer_canvas.h"
#include <cmath>


int GraphDisplayerCanvas::resetEdgeWidth (Edge edge)
{
  double min, max;

  min=edge_property_defaults[E_WIDTH];
  max=edge_property_defaults[E_WIDTH];
  Graph::EdgeMap<double> actual_map(mapstorage.graph,edge_property_defaults[E_WIDTH]);
  
  if(edge==INVALID)
    {
      for (EdgeIt i(mapstorage.graph); i!=INVALID; ++i)
        {
          double v=fabs(actual_map[i]);
          int w;
          if(min==max)
            {
              w=(int)(edge_property_defaults[E_WIDTH]);
            }
          else
            {
              w=(int)(MIN_EDGE_WIDTH+(v-min)/(max-min)*(MAX_EDGE_WIDTH-MIN_EDGE_WIDTH));
            }
          edgesmap[i]->property_width_units().set_value(w);
        }
    }
  else
    {
      int w=(int)actual_map[edge];
      if(w>=0)
        {
          edgesmap[edge]->property_width_units().set_value(w);
        }
    }
  return 0;
}


int GraphDisplayerCanvas::changeEdgeWidth (std::string mapname, Edge edge)
{
  Graph::EdgeMap<double> * actual_map;
  double min, max;

  min=mapstorage.minOfEdgeMap(mapname);
  max=mapstorage.maxOfEdgeMap(mapname);
  actual_map=(mapstorage.edgemap_storage)[mapname];

  if(edge==INVALID)
    {
      for (EdgeIt i(mapstorage.graph); i!=INVALID; ++i)
        {
          double v=fabs((*actual_map)[i]);
          int w;
          if(min==max)
            {
              w=(int)(edge_property_defaults[E_WIDTH]);
            }
          else
            {
              w=(int)(MIN_EDGE_WIDTH+(v-min)/(max-min)*(MAX_EDGE_WIDTH-MIN_EDGE_WIDTH));
            }
          edgesmap[i]->property_width_units().set_value(w);
        }
    }
  else
    {
      int w=(int)(*actual_map)[edge];
      if(w>=0)
        {
          edgesmap[edge]->property_width_units().set_value(w);
        }
    }
  return 0;
};

int GraphDisplayerCanvas::changeEdgeColor (std::string mapname, Edge edge)
{  

  //function maps the range of the maximum and
  //the minimum of the nodemap to the range of
  //green in RGB
  Graph::EdgeMap<double> * actual_map;
  actual_map=(mapstorage.edgemap_storage)[mapname];

  double max, min;

  max=mapstorage.maxOfEdgeMap(mapname);
  min=mapstorage.minOfEdgeMap(mapname);

  if(edge==INVALID)
    {
      for (EdgeIt i(mapstorage.graph); i!=INVALID; ++i)
        {
          double w=(*actual_map)[i];

          Gdk::Color color;
          if(max!=min)
            {
              color.set_rgb_p (0, 100*(w-min)/(max-min), 0);
            }
          else
            {
              color.set_rgb_p (0, 100, 0);
            }
          edgesmap[i]->property_fill_color_gdk().set_value(color);
        }
    }
  else
    {
      Gdk::Color color;

      double w=(*actual_map)[edge];

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

      edgesmap[edge]->property_fill_color_gdk().set_value(color);
    }
  return 0;
};

int GraphDisplayerCanvas::resetEdgeColor (Edge edge)
{  

  //function maps the range of the maximum and
  //the minimum of the nodemap to the range of
  //green in RGB
  Graph::EdgeMap<double> actual_map(mapstorage.graph,edge_property_defaults[E_COLOR]);

  double max, min;

  max=edge_property_defaults[E_COLOR];
  min=edge_property_defaults[E_COLOR];

  if(edge==INVALID)
    {
      for (EdgeIt i(mapstorage.graph); i!=INVALID; ++i)
        {
          double w=actual_map[i];

          Gdk::Color color;
          if(max!=min)
            {
              color.set_rgb_p (0, 100*(w-min)/(max-min), 0);
            }
          else
            {
              color.set_rgb_p (0, 100, 0);
            }
          edgesmap[i]->property_fill_color_gdk().set_value(color);
        }
    }
  else
    {
      Gdk::Color color;

      double w=actual_map[edge];

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

      edgesmap[edge]->property_fill_color_gdk().set_value(color);
    }
  return 0;
};

int GraphDisplayerCanvas::changeEdgeText (std::string mapname, Edge edge)
{
  //the number in the map will be written on the edge
  //EXCEPT when the name of the map is Default, because
  //in that case empty string will be written, because
  //that is the deleter map
  
  if(edge==INVALID)
    {
      for (EdgeIt i(mapstorage.graph); i!=INVALID; ++i)
        {
          edgemap_to_edit=mapname;
          double number=(*(mapstorage.edgemap_storage)[mapname])[i];
          
          std::ostringstream ostr;
          ostr << number;
          
          edgetextmap[i]->property_text().set_value(ostr.str());
        }

    }
  else
    {
          double number=(*(mapstorage.edgemap_storage)[mapname])[edge];

          std::ostringstream ostr;
          ostr << number;
          
          edgetextmap[edge]->property_text().set_value(ostr.str());
    }

  return 0;

};

int GraphDisplayerCanvas::resetEdgeText (Edge edge)
{
  //the number in the map will be written on the edge
  //EXCEPT when the name of the map is Default, because
  //in that case empty string will be written, because
  //that is the deleter map
  
  if(edge==INVALID)
    {
      for (EdgeIt i(mapstorage.graph); i!=INVALID; ++i)
        {
          edgemap_to_edit="";
          edgetextmap[i]->property_text().set_value("");
        }

    }
  else
    {
      edgetextmap[edge]->property_text().set_value("");
    }

  return 0;

};