#include "graph_displayer_canvas.h"

 #include "broken_edge.h"

 #include <cmath>

 int GraphDisplayerCanvas::changeEdgeWidth (std::string mapname, Edge edge)

 {

   Graph::EdgeMap<double> * actual_map;

   double min, max;

   if(mapname=="Default")

     {

       min=edge_property_defaults[E_WIDTH];

       max=edge_property_defaults[E_WIDTH];

       actual_map=new Graph::EdgeMap<double>(mapstorage.graph,edge_property_defaults[E_WIDTH]);

     }

   else

     {

       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;

   if(mapname=="Default")

     {

       actual_map=new Graph::EdgeMap<double>(mapstorage.graph,edge_property_defaults[E_COLOR]);

     }

   else

     {

       actual_map=(mapstorage.edgemap_storage)[mapname];

     }

   double max, min;

   if(mapname!="Default")

     {

       max=mapstorage.maxOfEdgeMap(mapname);

       min=mapstorage.minOfEdgeMap(mapname);

     }

   else

     {

       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)

 	{

 	  if(mapname!="Default")

 	    {

 	      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

 	    {

 	      edgemap_to_edit="";

 	      edgetextmap[i]->property_text().set_value("");

 	    }

 	}

     }

   else

     {

       if(mapname!="Default")

 	{

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

 	  std::ostringstream ostr;

 	  ostr << number;

 	  edgetextmap[edge]->property_text().set_value(ostr.str());

 	}

       else

 	{

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

 	}

     }

   return 0;

 };