/* -*- C++ -*-

  *

  * This file is a part of LEMON, a generic C++ optimization library

  *

  * Copyright (C) 2003-2006

  * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport

  * (Egervary Research Group on Combinatorial Optimization, EGRES).

  *

  * Permission to use, modify and distribute this software is granted

  * provided that this copyright notice appears in all copies. For

  * precise terms see the accompanying LICENSE file.

  *

  * This software is provided "AS IS" with no warranty of any kind,

  * express or implied, and with no claim as to its suitability for any

  * purpose.

  *

  */

 #include "graph_displayer_canvas.h"

 #include <cmath>

 const int minimum_edge_width=0;

 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((mytab.mapstorage).graph,edge_property_defaults[E_WIDTH]);

   if(edge==INVALID)

     {

       for (EdgeIt i((mytab.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));

 	    }

 	  if(zoomtrack)

 	    {

 	      double actual_ppu=get_pixels_per_unit();

 	      w=(int)(w/actual_ppu*fixed_zoom_factor);

 	    }

 	  edgesmap[i]->setLineWidth(w);

 	}

     }

   else

     {

       int w=(int)actual_map[edge];

       if(w>=0)

 	{

 	  edgesmap[edge]->setLineWidth(w);

 	}

     }

   return 0;

 }

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

 {

   Graph::EdgeMap<double> * actual_map;

   double min, max;

   min=(mytab.mapstorage).minOfEdgeMap(mapname);

   max=(mytab.mapstorage).maxOfEdgeMap(mapname);

   actual_map=((mytab.mapstorage).edgemap_storage)[mapname];

   if(edge==INVALID)

     {

       for (EdgeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)

 	{

 	  double v=fabs((*actual_map)[i]);

 	  int w;

 	  if(autoscale)

 	    {

 	      if(min==max)

 		{

 		  w=(int)(edge_property_defaults[E_WIDTH]);

 		}

 	      else

 		{

 		  w=(int)(minimum_edge_width+(v-min)/(max-min)*(edge_width-minimum_edge_width));

 		}

 	    }

 	  else

 	    {

 	      w=(int)(v*edge_width);

 	    }

 	  if(w<minimum_edge_width)

 	    {

 	      w=minimum_edge_width;

 	    }

 	  if(zoomtrack)

 	    {

 	      double actual_ppu=get_pixels_per_unit();

 	      w=(int)(w/actual_ppu*fixed_zoom_factor);

 	    }

 	  edgesmap[i]->setLineWidth(w);

 	}

     }

   else

     {

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

       if(w>=0)

 	{

 	  edgesmap[edge]->setLineWidth(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=((mytab.mapstorage).edgemap_storage)[mapname];

   double max, min;

   max=(mytab.mapstorage).maxOfEdgeMap(mapname);

   min=(mytab.mapstorage).minOfEdgeMap(mapname);

   if(edge==INVALID)

     {

       for (EdgeIt i((mytab.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]->setFillColor(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]->setFillColor(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((mytab.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((mytab.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]->setFillColor(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]->setFillColor(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((mytab.mapstorage).graph); i!=INVALID; ++i)

 	{

 	  edgemap_to_edit=mapname;

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

 	  std::ostringstream ostr;

 	  ostr << number;

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

 	}

     }

   else

     {

 	  double number=(*((mytab.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((mytab.mapstorage).graph); i!=INVALID; ++i)

 	{

 	  edgemap_to_edit="";

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

 	}

     }

   else

     {

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

     }

   return 0;

 };