// Copyright (c) 2016-2018 Kiwano - Nomango
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

#include <kiwano/render/Color.h>

namespace kiwano
{
namespace
{
const uint32_t RED_SHIFT   = 16;
const uint32_t GREEN_SHIFT = 8;
const uint32_t BLUE_SHIFT  = 0;

const uint32_t RED_MASK   = 0xff << RED_SHIFT;
const uint32_t GREEN_MASK = 0xff << GREEN_SHIFT;
const uint32_t BLUE_MASK  = 0xff << BLUE_SHIFT;
}  // namespace

const Color Color::Transparent = Color(0, 0, 0, 0.f);

Color::Color()
    : r(0)
    , g(0)
    , b(0)
    , a(1.f)
{
}

Color::Color(float r, float g, float b, float alpha)
    : r(r)
    , g(g)
    , b(b)
    , a(alpha)
{
}

Color::Color(int r, int g, int b, float alpha)
    : r(r / 255.0f)
    , g(g / 255.0f)
    , b(b / 255.0f)
    , a(alpha)
{
}

Color::Color(uint32_t rgb, float alpha)
    : r(((rgb & RED_MASK) >> RED_SHIFT) / 255.f)
    , g(((rgb & GREEN_MASK) >> GREEN_SHIFT) / 255.f)
    , b(((rgb & BLUE_MASK) >> BLUE_SHIFT) / 255.f)
    , a(alpha)
{
}

Color Color::Rgb(float r, float g, float b)
{
    return Color::Rgba(r, g, b, 1.0f);
}

Color Color::Rgb(int r, int g, int b)
{
    return Color::Rgba(r, g, b, 1.0f);
}

Color Color::Rgb(uint32_t rgb)
{
    return Color::Rgba(rgb, 1.0f);
}

Color Color::Rgba(float r, float g, float b, float alpha)
{
    return Color(r, g, b, alpha);
}

Color Color::Rgba(int r, int g, int b, float alpha)
{
    return Color(r, g, b, alpha);
}

Color Color::Rgba(uint32_t rgb, float alpha)
{
    return Color(rgb, alpha);
}

}  // namespace kiwano
