#include <graph_displayer_canvas.h>

#include <broken_edge.h>

#include <math.h>

int GraphDisplayerCanvas::changeLineWidth (std::string mapname)

{

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

    {

      int w=(int)(*(mapstorage.edgemap_storage)[mapname])[i];

      if(w>=0)

	{

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

	}

    }

  return 0;

};

int GraphDisplayerCanvas::changeColor (std::string mapname)

{  

  //function maps the range of the maximum and

  //the minimum of the nodemap to the range of

  //green in RGB

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

  {

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

    double max=mapstorage.maxOfEdgeMap(mapname);

    double min=mapstorage.minOfEdgeMap(mapname);

    //std::cout<<w<<" "<<max<<" "<<min<<" "<<100*(w-min)/(max-min)<<std::endl;

    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);

  }

  return 0;

};

int GraphDisplayerCanvas::changeText (std::string mapname)

{

  //the number in the map will be written on the edge

  //EXCEPT when the name of the map is Text, because

  //in that case empty string will be written, because

  //that is the deleter map

  //\todo isn't it a bit woodcutter?

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

    {

      if(mapname!="Text")

	{

	  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)

		{

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

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

		  number-=digit*maxpos;

		  number*=10;

		}

	    }

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

	}

      else

	{

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

	}

    }

  return 0;

};