#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;

};