color.h

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/*
 * The ManaPlus Client
 * Copyright (C) 2011-2019 The ManaPlus Developers
 * Copyright (C) 2019-2021 Andrei Karas
 *
 * This file is part of The ManaPlus Client.
 *
 * 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
 * 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, see <http://www.gnu.org/licenses/>.
 */
 
/* _______ __ __ __ ______ __ __ _______ __ __
 * / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___ /\ / |\/ /\
 * / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
 * / / /__ / / // / // / // / / / ___ / // ___ / // /| ' / /
 * / /_// /\ / /_// / // / // /_/_ / / // / // /\_/ / // / | / /
 * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
 * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
 *
 * Copyright (c) 2004 - 2008 Olof Naessén and Per Larsson
 *
 *
 * Per Larsson a.k.a finalman
 * Olof Naessén a.k.a jansem/yakslem
 *
 * Visit: http://guichan.sourceforge.net
 *
 * License: (BSD)
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
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 * distribution.
 * 3. Neither the name of Guichan nor the names of its contributors may
 * be used to endorse or promote products derived from this software
 * without specific prior written permission.
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
#ifndef GUI_COLOR_H
#define GUI_COLOR_H
 
#include "utils/cast.h"
 
#include "localconsts.h"
 
class Color final
{
 public:
 constexpr Color() :
 r(0U),
 g(0U),
 b(0U),
 a(255U)
 {
 }
 
 explicit constexpr Color(const unsigned int color) :
 r((color >> 16) & 0xFFU),
 g((color >> 8) & 0xFFU),
 b(color & 0xFFU),
 a(255U)
 {
 }
 
 constexpr Color(const unsigned int ar,
 const unsigned int ag,
 const unsigned int ab,
 const unsigned int aa) :
 r(ar),
 g(ag),
 b(ab),
 a(aa)
 {
 }
 
 
 A_DEFAULT_COPY(Color)
 
 
 constexpr2 Color operator+(const Color& color) const
 {
 Color result(r + color.r,
 g + color.g,
 b + color.b,
 255U);
 
 result.r = (result.r > 255U ? 255U : result.r);
 result.g = (result.g > 255U ? 255U : result.g);
 result.b = (result.b > 255U ? 255U : result.b);
 
 return result;
 }
 
 constexpr2 Color operator-(const Color& color) const
 {
 Color result(r - color.r,
 g - color.g,
 b - color.b,
 255U);
 
 result.r = (result.r > 255U ? 255U : result.r);
 result.g = (result.g > 255U ? 255U : result.g);
 result.b = (result.b > 255U ? 255U : result.b);
 
 return result;
 }
 
 constexpr2 Color operator*(const float value) const
 {
 Color result(CAST_U32(static_cast<float>(r) * value),
 CAST_U32(static_cast<float>(g) * value),
 CAST_U32(static_cast<float>(b) * value),
 a);
 
 result.r = (result.r > 255U ? 255U : result.r);
 result.g = (result.g > 255U ? 255U : result.g);
 result.b = (result.b > 255U ? 255U : result.b);
 
 return result;
 }
 
 constexpr bool operator==(const Color& color) const
 {
 return r == color.r &&
 g == color.g &&
 b == color.b &&
 a == color.a;
 }
 
 constexpr bool operator!=(const Color& color) const
 {
 return !(r == color.r &&
 g == color.g &&
 b == color.b &&
 a == color.a);
 }
 
 unsigned int r;
 
 unsigned int g;
 
 unsigned int b;
 
 unsigned int a;
};
 
#endif // GUI_COLOR_H