/* -*- 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 <mapstorage.h>

#include <nbtab.h>

#include <cmath>

const int minimum_node_radius=5;

int GraphDisplayerCanvas::changeNodeRadius (std::string mapname, Node node)

{

  MapStorage& ms = *mytab.mapstorage;

  double min, max;

  {

    NodeIt n(ms.graph);

    min = max = ms.get(mapname, n);

    for (; n != INVALID; ++n)

    {

      if (static_cast<double>(ms.get(mapname, n)) > max)

        max = ms.get(mapname, n);

      if (static_cast<double>(ms.get(mapname, n)) < min)

        min = ms.get(mapname, n);

    }

  }

  if(node==INVALID)

    {

      for (NodeIt i(ms.graph); i!=INVALID; ++i)

	{

	  double v=fabs(ms.get(mapname,i));

	  int w;

	  if(autoscale)

	    {

	      if(min==max)

		{

		  w=(int)(node_property_defaults[N_RADIUS]);

		}

	      else

		{

		  w=(int)(minimum_node_radius+(v-min)/(max-min)*(radius_size-minimum_node_radius));

		}

	    }

	  else

	    {

	      w=(int)(v*radius_size);

	    }

	  if(w<minimum_node_radius)

	    {

	      w=minimum_node_radius;

	    }

	  if(zoomtrack)

	    {

	      double actual_ppu=get_pixels_per_unit();

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

	    }

	  if(w>=0)

	    {

	      double x1, y1, x2, y2;

	      x1=nodesmap[i]->property_x1().get_value();

	      x2=nodesmap[i]->property_x2().get_value();

	      y1=nodesmap[i]->property_y1().get_value();

	      y2=nodesmap[i]->property_y2().get_value();

	      nodesmap[i]->property_x1().set_value((x1+x2)/2-w);

	      nodesmap[i]->property_x2().set_value((x1+x2)/2+w);

	      nodesmap[i]->property_y1().set_value((y1+y2)/2-w);

	      nodesmap[i]->property_y2().set_value((y1+y2)/2+w);

	    }

	}

    }

  else

    {

      //I think only new nodes use this case

      //that has no own value, only the default one

      //int w=(int)(*actual_map)[node];

      int w=(int)(node_property_defaults[N_RADIUS]);

      if(w>=0)

	{

	  double x1, y1, x2, y2;

	  x1=nodesmap[node]->property_x1().get_value();

	  x2=nodesmap[node]->property_x2().get_value();

	  y1=nodesmap[node]->property_y1().get_value();

	  y2=nodesmap[node]->property_y2().get_value();

	  nodesmap[node]->property_x1().set_value((x1+x2)/2-w);

	  nodesmap[node]->property_x2().set_value((x1+x2)/2+w);

	  nodesmap[node]->property_y1().set_value((y1+y2)/2-w);

	  nodesmap[node]->property_y2().set_value((y1+y2)/2+w);

	}

    }

  return 0;

};

int GraphDisplayerCanvas::resetNodeRadius (Node node)

{

  MapStorage& ms = *mytab.mapstorage;

  double min, max;

  min=node_property_defaults[N_RADIUS];

  max=node_property_defaults[N_RADIUS];

  Graph::NodeMap<double> actual_map(ms.graph,node_property_defaults[N_RADIUS]);

  if(node==INVALID)

    {

      for (NodeIt i(ms.graph); i!=INVALID; ++i)

	{

	  double v=fabs(actual_map[i]);

	  int w;

	  if(min==max)

	    {

	      w=(int)(node_property_defaults[N_RADIUS]);

	    }

	  else

	    {

	      w=(int)(MIN_NODE_RADIUS+(v-min)/(max-min)*(MAX_NODE_RADIUS-MIN_NODE_RADIUS));

	    }

	  if(zoomtrack)

	    {

	      double actual_ppu=get_pixels_per_unit();

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

	    }

	  if(w>=0)

	    {

	      double x1, y1, x2, y2;

	      x1=nodesmap[i]->property_x1().get_value();

	      x2=nodesmap[i]->property_x2().get_value();

	      y1=nodesmap[i]->property_y1().get_value();

	      y2=nodesmap[i]->property_y2().get_value();

	      nodesmap[i]->property_x1().set_value((x1+x2)/2-w);

	      nodesmap[i]->property_x2().set_value((x1+x2)/2+w);

	      nodesmap[i]->property_y1().set_value((y1+y2)/2-w);

	      nodesmap[i]->property_y2().set_value((y1+y2)/2+w);

	    }

	}

    }

  else

    {

      //I think only new nodes use this case

//       int w=(int)actual_map[node];

      int w=(int)(node_property_defaults[N_RADIUS]);

      if(w>=0)

	{

	  double x1, y1, x2, y2;

	  x1=nodesmap[node]->property_x1().get_value();

	  x2=nodesmap[node]->property_x2().get_value();

	  y1=nodesmap[node]->property_y1().get_value();

	  y2=nodesmap[node]->property_y2().get_value();

	  nodesmap[node]->property_x1().set_value((x1+x2)/2-w);

	  nodesmap[node]->property_x2().set_value((x1+x2)/2+w);

	  nodesmap[node]->property_y1().set_value((y1+y2)/2-w);

	  nodesmap[node]->property_y2().set_value((y1+y2)/2+w);

	}

    }

  return 0;

};

int GraphDisplayerCanvas::changeNodeColor (std::string mapname, Node node)

{  

  MapStorage& ms = *mytab.mapstorage;

  //function maps the range of the maximum and

  //the minimum of the nodemap to the range of

  //green in RGB

  double max, min;

  {

    NodeIt n(ms.graph);

    min = max = ms.get(mapname, n);

    for (; n != INVALID; ++n)

    {

      if (static_cast<double>(ms.get(mapname, n)) > max)

        max = ms.get(mapname, n);

      if (static_cast<double>(ms.get(mapname, n)) < min)

        min = ms.get(mapname, n);

    }

  }

  if(node==INVALID)

    {

      for (NodeIt i(ms.graph); i!=INVALID; ++i)

	{

	  Gdk::Color color;

	  double w=ms.get(mapname, i);

	  if(max!=min)

	    {

	      color=rainbowColorCounter(min, max, w);

	    }

	  else

	    {

	      color.set_rgb_p (0, 0, 1);

	    }

	  nodesmap[i]->property_fill_color_gdk().set_value(color);

	}

    }

  else

    {

      Gdk::Color color;

      double w=ms.get(mapname, node);

      if(max!=min)

	{

	  color=rainbowColorCounter(min, max, w);

	}

      else

	{

	  color.set_rgb_p (0, 0, 1);

	}

      nodesmap[node]->property_fill_color_gdk().set_value(color);

    }

  return 0;

};

int GraphDisplayerCanvas::resetNodeColor (Node node)

{  

  MapStorage& ms = *mytab.mapstorage;

  //function maps the range of the maximum and

  //the minimum of the nodemap to the range of

  //green in RGB

  Graph::NodeMap<double> actual_map(ms.graph,node_property_defaults[N_COLOR]);

  double max, min;

  max=node_property_defaults[N_COLOR];

  min=node_property_defaults[N_COLOR];

  if(node==INVALID)

    {

      for (NodeIt i(ms.graph); i!=INVALID; ++i)

	{

	  Gdk::Color color;

	  double w=actual_map[i];

	  if(max!=min)

	    {

	      color.set_rgb_p (0, 0, 100*(w-min)/(max-min));

	    }

	  else

	    {

	      color.set_rgb_p (0, 0, 100);

	    }

	  nodesmap[i]->property_fill_color_gdk().set_value(color);

	}

    }

  else

    {

      Gdk::Color color;

      double w=actual_map[node];

      if(max!=min)

	{

	  color.set_rgb_p (0, 0, 100*(w-min)/(max-min));

	}

      else

	{

	  color.set_rgb_p (0, 0, 100);

	}

      nodesmap[node]->property_fill_color_gdk().set_value(color);

    }

  return 0;

};

int GraphDisplayerCanvas::changeNodeText (std::string mapname, Node node)

{

  MapStorage& ms = *mytab.mapstorage;

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

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

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

  //that is the deleter map

  if(node==INVALID)

    {

      for (NodeIt i(ms.graph); i!=INVALID; ++i)

	{

	  nodemap_to_edit=mapname;

	  nodetextmap[i]->property_text().set_value(

              static_cast<std::string>(ms.get(mapname, i)));

	}

    }

  else

    {

      nodetextmap[node]->property_text().set_value(

          static_cast<std::string>(ms.get(mapname, node)));

    }

  return 0;

};

int GraphDisplayerCanvas::resetNodeText (Node node)

{

  MapStorage& ms = *mytab.mapstorage;

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

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

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

  //that is the deleter map

  if(node==INVALID)

    {

      for (NodeIt i(ms.graph); i!=INVALID; ++i)

	{

	  nodemap_to_edit="";

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

	}

    }

  else

    {

      nodetextmap[node]->property_text().set_value("");

    }

  return 0;

};