/* color.cc
 * This file is part of ncursesxx library
 * Copyright (c) 2003,2004 by Stanislav Ievlev
 *
 * This file is covered by the GNU Library General Public License,
 * which should be included with libncursesxx as the file COPYING.
 */
#include <ncurses/color.hh>

#include <ncurses/support.hh>

#include <algorithm>
#include <map>

using ncurses::color;

static std::map<std::pair<short, short>, short> color_pairs;

static short
make_pair (short fg, short bg)
{
  auto pair = std::make_pair (fg, bg);
  auto found = color_pairs.find (pair);
  if (found != color_pairs.end ())
    return found->second;

  static short color_counter;
  color_pairs.insert ({ pair, ++color_counter });
  return color_counter;
}

color::color ()
  : attr_ (WA_NORMAL)
  , num_ (-1)
{
}

color::color (short f, short b, attr_t attr)
  : attr_ (attr)
  , num_ (make_pair (f, b))
{
  if (has_colors ())
    return_unless (init_pair (num_, f, b) == OK);
}

color::~color ()
{
}

attr_t
color::attr () const
{
  return attr_;
}

short
color::num () const
{
  return num_;
}