space.hpp

 
#ifndef UFO_VISION_COLOR_SPACE_HPP
#define UFO_VISION_COLOR_SPACE_HPP
 
// STL
#include <format>
#include <ostream>
#include <string_view>
#include <utility>
 
namespace ufo
{
enum class ColorSpace { NATIVE, Rgb, Oklab, Oklab2, Oklch };
 
[[nodiscard]] constexpr std::string_view toString(ColorSpace cs) noexcept
{
    using namespace std::literals;
    switch (cs) {
        case ColorSpace::NATIVE: return "NATIVE"sv;
        case ColorSpace::Rgb: return "Rgb"sv;
        case ColorSpace::Oklab: return "OKLab"sv;
        case ColorSpace::Oklab2: return "OKLab2"sv;
        case ColorSpace::Oklch: return "OKLch"sv;
    }
    std::unreachable();
}
 
inline std::ostream& operator<<(std::ostream& out, ColorSpace cs)
{
    return out << toString(cs);
}
 
}  // namespace ufo
 
template <>
struct std::formatter<ufo::ColorSpace> : std::formatter<std::string_view> {
    auto format(ufo::ColorSpace cs, std::format_context& ctx) const
    {
        return std::formatter<std::string_view>::format(ufo::toString(cs), ctx);
    }
};
 
#endif  // UFO_VISION_COLOR_SPACE_HPP