Source/WebCore/platform/graphics/ColorInterpolationMethod.cpp

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 * Copyright (C) 2022 Apple Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 *
 * 1.  Redistributions of source code must retain the above copyright
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 * 2.  Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
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 *
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#include "config.h"
#include "ColorInterpolationMethod.h"

#include <wtf/text/TextStream.h>

namespace WebCore {

TextStream& operator<<(TextStream& ts, ColorInterpolationColorSpace interpolationColorSpace)
{
    switch (interpolationColorSpace) {
    case ColorInterpolationColorSpace::HSL:
        ts << "HSL";
        break;
    case ColorInterpolationColorSpace::HWB:
        ts << "HWB";
        break;
    case ColorInterpolationColorSpace::LCH:
        ts << "LCH";
        break;
    case ColorInterpolationColorSpace::Lab:
        ts << "Lab";
        break;
    case ColorInterpolationColorSpace::OKLCH:
        ts << "OKLCH";
        break;
    case ColorInterpolationColorSpace::OKLab:
        ts << "OKLab";
        break;
    case ColorInterpolationColorSpace::SRGB:
        ts << "sRGB";
        break;
    case ColorInterpolationColorSpace::SRGBLinear:
        ts << "sRGB linear";
        break;
    case ColorInterpolationColorSpace::XYZD50:
        ts << "XYZ D50";
        break;
    case ColorInterpolationColorSpace::XYZD65:
        ts << "XYZ D65";
        break;
    }
    return ts;
}

TextStream& operator<<(TextStream& ts, HueInterpolationMethod hueInterpolationMethod)
{
    switch (hueInterpolationMethod) {
    case HueInterpolationMethod::Shorter:
        ts << "shorter";
        break;
    case HueInterpolationMethod::Longer:
        ts << "longer";
        break;
    case HueInterpolationMethod::Increasing:
        ts << "increasing";
        break;
    case HueInterpolationMethod::Decreasing:
        ts << "decreasing";
        break;
    case HueInterpolationMethod::Specified:
        ts << "specified";
        break;
    }
    return ts;
}

TextStream& operator<<(TextStream& ts, const ColorInterpolationMethod& method)
{
    WTF::switchOn(method.colorSpace,
        [&] (auto& type) {
            ts << type.interpolationColorSpace;
            if constexpr (hasHueInterpolationMethod<decltype(type)>)
                ts << ' ' << type.hueInterpolationMethod;
            ts << ' ' << method.alphaPremultiplication;
        }
    );
    return ts;
}

} // namespace WebCore