////////////////////////////////////////////////////////////////////////////////
// task - a command line task list manager.
//
// Copyright 2006 - 2010, Paul Beckingham.
// All rights reserved.
//
// This program is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free Software
// Foundation; either version 2 of the License, or (at your option) any later
// version.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
// FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
// details.
//
// You should have received a copy of the GNU General Public License along with
// this program; if not, write to the
//
//     Free Software Foundation, Inc.,
//     51 Franklin Street, Fifth Floor,
//     Boston, MA
//     02110-1301
//     USA
//
////////////////////////////////////////////////////////////////////////////////
#ifndef INCLUDED_COLOR
#define INCLUDED_COLOR

#include <string>

////////////////////////////////////////////////////////////////////////////////
#define _COLOR_256       0x00200000  // 256-color mode.
#define _COLOR_HASBG     0x00100000  // Has background color (all values taken).
#define _COLOR_HASFG     0x00080000  // Has foreground color (all values taken).
#define _COLOR_UNDERLINE 0x00040000  // General underline attribute.
#define _COLOR_BOLD      0x00020000  // 16-color bold attribute.
#define _COLOR_BRIGHT    0x00010000  // 16-color bright background attribute.
#define _COLOR_BG        0x0000FF00  // 8-bit background color index.
#define _COLOR_FG        0x000000FF  // 8-bit foreground color index.

class Color
{
public:
  enum color_id {nocolor = 0, black, red, green, yellow, blue, magenta, cyan, white};

  Color ();
  Color (const Color&);
  Color (unsigned int);                         // 256 | UNDERLINE | BOLD | BRIGHT | (BG << 8) | FG
  Color (const std::string&);                   // "red on bright black"
  Color (color_id);                             // fg.
  Color (color_id, color_id);                   // fg, bg.
  Color (color_id, color_id, bool, bool, bool); // fg, bg, underline, bold, bright
  ~Color ();
  Color& operator= (const Color&);
  operator std::string () const;
  operator int () const;

  void upgrade ();
  void blend (const Color&);

  std::string colorize (const std::string&);
  static std::string colorize (const std::string&, const std::string&);

  bool nontrivial ();

private:
  int find (const std::string&);
  std::string fg () const;
  std::string bg () const;

private:
  unsigned int value;
};

#endif

////////////////////////////////////////////////////////////////////////////////