#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;

};