#include <graph_displayer_canvas.h>

 #include <broken_edge.h>

 #include <math.h>

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

 {

   Graph::EdgeMap<double> * actual_map;

   if(mapname=="Default")

     {

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

     }

   else

     {

       actual_map=(mapstorage.edgemap_storage)[mapname];

     }

   if(edge==INVALID)

     {

       for (EdgeIt i(g); i!=INVALID; ++i)

 	{

 	  int w=(int)(*actual_map)[i];

 	  if(w>=0)

 	    {

 	      edgesmap[i]->property_width_pixels().set_value(w);

 	    }

 	}

     }

   else

     {

       int w=(int)(*actual_map)[edge];

       if(w>=0)

 	{

 	  edgesmap[edge]->property_width_pixels().set_value(w);

 	}

     }

   return 0;

 };

 int GraphDisplayerCanvas::changeEdgeColor (std::string mapname, Graph::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>(g,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(g); 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, Graph::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(g); i!=INVALID; ++i)

 	{

 	  if(mapname!="Default")

 	    {

 	      edgemap_to_edit=mapname;

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

 	      int length=1;

 	      //if number is smaller than one, length would be negative, or invalid

 	      if(number>=1)

 		{

 		  length=(int)(floor(log(number)/log(10)))+1;

 		}

 	      int maxpos=(int)(pow(10,length-1));

 	      int strl=length+1+RANGE;

 	      char * str=new char[strl];

 	      str[length]='.';

 	      str[strl]='\0';

 	      for(int j=0;j<strl;j++)

 		{

 		  if(j!=length)

 		    {

 		      if((number-(int)number)>ALMOST_ONE)

 			{

 			  number=round(number);

 			}

 		      int digit=(int)(number/maxpos);

 		      str[j]=(digit+'0');

 		      number-=digit*maxpos;

 		      number*=10;

 		    }

 		}

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

 	    }

 	  else

 	    {

 	      edgemap_to_edit="";

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

 	    }

 	}

     }

   else

     {

       if(mapname!="Default")

 	{

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

 	  int length=1;

 	  //if number is smaller than one, length would be negative, or invalid

 	  if(number>=1)

 	    {

 	      length=(int)(floor(log(number)/log(10)))+1;

 	    }

 	  int maxpos=(int)(pow(10,length-1));

 	  int strl=length+1+RANGE;

 	  char * str=new char[strl];

 	  str[length]='.';

 	  str[strl]='\0';

 	  for(int j=0;j<strl;j++)

 	    {

 	      if(j!=length)

 		{

 		  if((number-(int)number)>ALMOST_ONE)

 		    {

 		      number=round(number);

 		    }

 		  int digit=(int)(number/maxpos);

 		  str[j]=(digit+'0');

 		  number-=digit*maxpos;

 		  number*=10;

 		}

 	    }

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

 	}

       else

 	{

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

 	}

     }

   return 0;

 };