mgl_color32.h

[詳解]

// SPDX-License-Identifier: Zlib
/* ------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------- */
 
#ifndef INCGUARD_MGL_COLOR32_H_1678469912
#define INCGUARD_MGL_COLOR32_H_1678469912
 
#include <mgl/common/mgl_color.h>
 
namespace MGL
{
struct Color32
{
    uint8_t red;      
    uint8_t green;    
    uint8_t blue;     
    uint8_t alpha;    
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    constexpr Color32() noexcept
        : red(0)
        , green(0)
        , blue(0)
        , alpha(0)
    {}
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    constexpr Color32(uint8_t inRed, uint8_t inGreen, uint8_t inBlue, uint8_t inAlpha = 255) noexcept
        : red(inRed)
        , green(inGreen)
        , blue(inBlue)
        , alpha(inAlpha)
    {}
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    constexpr Color32(uint32_t rgba) noexcept
        : red(static_cast<uint8_t>(rgba >> 24))
        , green(static_cast<uint8_t>((rgba >> 16) & 0xFF))
        , blue((static_cast<uint8_t>(rgba >> 8) & 0xFF))
        , alpha(static_cast<uint8_t>(rgba & 0xFF))
    {}
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    constexpr Color32(XColor xcolor) noexcept
        : Color32(GetXColorCode(xcolor))
    {}
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    constexpr operator Color() const noexcept
    {
        Color color;
        color.red = static_cast<float>(red) / 255.0f;
        color.green = static_cast<float>(green) / 255.0f;
        color.blue = static_cast<float>(blue) / 255.0f;
        color.alpha = static_cast<float>(alpha) / 255.0f;
        return color;
    }
};
 
}    // namespace MGL
#endif    // INCGUARD_MGL_COLOR32_H_1678469912
 
// vim: et ts=4 sw=4 sts=4