/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/*

 * This file is part of the libmspub project.

 *

 * This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/.

 */

#include "ColorReference.h"

namespace libmspub

{

Color ColorReference::getRealColor(unsigned c, const std::vector<Color> &palette) const

{

  unsigned char type = (c >> 24) & 0xFF;

  if (type == 0x08)

  {

    if ((c & 0xFFFFFF) >= palette.size())

    {

      return Color();

    }

    return palette[c & 0xFFFFFF];

  }

  return Color(c & 0xFF, (c >> 8) & 0xFF, (c >> 16) & 0xFF);

}

Color ColorReference::getFinalColor(const std::vector<Color> &palette) const

{

  unsigned char modifiedType = (m_modifiedColor >> 24) & 0xFF;

  if (modifiedType == CHANGE_INTENSITY)

  {

    Color c = getRealColor(m_baseColor, palette);

    unsigned char changeIntensityBase = (m_modifiedColor >> 8) & 0xFF;

    double intensity = (double)((m_modifiedColor >> 16) & 0xFF) / 0xFF;

    if (changeIntensityBase == BLACK_BASE)

    {

      return Color(c.r * intensity, c.g * intensity, c.b * intensity);

    }

    if (changeIntensityBase == WHITE_BASE)

    {

      return Color(c.r + (255 - c.r) * (1 - intensity), c.g + (255 - c.g) * (1 - intensity), c.b + (255 - c.b) * (1 - intensity));

    }

    return Color();

  }

  else

  {

    return getRealColor(m_modifiedColor, palette);

  }

}

bool operator==(const ColorReference &l, const ColorReference &r)

{

  return l.m_baseColor == r.m_baseColor && l.m_modifiedColor == r.m_modifiedColor;

}

// const unsigned char ColorReference::COLOR_PALETTE = 0x8;

const unsigned char ColorReference::CHANGE_INTENSITY = 0x10;

const unsigned char ColorReference::BLACK_BASE = 0x1;

const unsigned char ColorReference::WHITE_BASE = 0x2;

}

/* vim:set shiftwidth=2 softtabstop=2 expandtab: */