Color.h

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/*******************************************************************************
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#pragma once
 
#include <Zivid/Detail/DataFormatUtils.h>
#include <Zivid/Detail/UtilsExport.h>
 
#include <cstdint>
#include <iosfwd>
#include <string>
#include <type_traits>
 
namespace Zivid
{
#ifndef NO_DOC
    namespace Detail
    {
        ZIVID_UTILS_EXPORT std::string rgbaIntsToString(int r, int g, int b, int a);
        ZIVID_UTILS_EXPORT std::string bgraIntsToString(int b, int g, int r, int a);
 
        template<typename T>
        std::string rgbaToString(T r, T g, T b, T a)
        {
            return rgbaIntsToString(static_cast<int>(r), static_cast<int>(g), static_cast<int>(b), static_cast<int>(a));
        }
 
        template<typename T>
        std::string bgraToString(T b, T g, T r, T a)
        {
            return bgraIntsToString(static_cast<int>(b), static_cast<int>(g), static_cast<int>(r), static_cast<int>(a));
        }
    } // namespace Detail
#endif
 
    struct ColorBGRA;
    struct ColorSRGB;
    using ColorRGBA_SRGB = ColorSRGB;
 
    template<typename T>
    struct ColorRGBABase
    {
        using ValueType = T;
 
        ColorRGBABase() = default;
 
        ColorRGBABase(T red, T green, T blue, T alpha)
            : r{ red }
            , g{ green }
            , b{ blue }
            , a{ alpha }
        {}
 
        T r;
 
        T g;
 
        T b;
 
        T a;
 
        ZIVID_UTILS_EXPORT bool operator==(const ColorRGBABase &rhs) const;
 
        ZIVID_UTILS_EXPORT bool operator!=(const ColorRGBABase &rhs) const;
 
        std::string toString() const
        {
            return Detail::rgbaToString(r, g, b, a);
        }
    };
 
    template<typename T>
    std::ostream &operator<<(std::ostream &stream, const ColorRGBABase<T> &color)
    {
        return stream << color.toString();
    }
 
    struct ColorSRGB : public ColorRGBABase<uint8_t>
    {
        using ColorRGBABase::ColorRGBABase;
    };
 
    ZIVID_STATIC_ASSERT_DATA_FORMAT_TYPE(ColorSRGB, 4);
 
    using ColorRGBA_SRGB = ColorSRGB;
 
    struct ColorRGBA : public ColorRGBABase<uint8_t>
    {
        using ColorRGBABase::ColorRGBABase;
    };
 
    ZIVID_STATIC_ASSERT_DATA_FORMAT_TYPE(ColorRGBA, 4);
 
    template<typename T>
    struct ColorBGRABase
    {
        using ValueType = T;
 
        ColorBGRABase() = default;
 
        ColorBGRABase(T blue, T green, T red, T alpha)
            : b{ blue }
            , g{ green }
            , r{ red }
            , a{ alpha }
        {}
 
        T b;
 
        T g;
 
        T r;
 
        T a;
 
        ZIVID_UTILS_EXPORT bool operator==(const ColorBGRABase &rhs) const;
 
        ZIVID_UTILS_EXPORT bool operator!=(const ColorBGRABase &rhs) const;
 
        std::string toString() const
        {
            return Detail::bgraToString(b, g, r, a);
        }
    };
 
    template<typename T>
    std::ostream &operator<<(std::ostream &stream, const ColorBGRABase<T> &color)
    {
        return stream << color.toString();
    }
 
    struct ColorBGRA : public ColorBGRABase<uint8_t>
    {
        using ColorBGRABase::ColorBGRABase;
    };
 
    ZIVID_STATIC_ASSERT_DATA_FORMAT_TYPE(ColorBGRA, 4);
 
    struct ColorBGRA_SRGB : public ColorBGRABase<uint8_t>
    {
        using ColorBGRABase::ColorBGRABase;
    };
 
    ZIVID_STATIC_ASSERT_DATA_FORMAT_TYPE(ColorBGRA_SRGB, 4);
 
} // namespace Zivid