112 lines
4.9 KiB
C++
112 lines
4.9 KiB
C++
/*
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* Copyright (C) 2009-2021 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "ColorTypes.h"
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#include <functional>
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#include <wtf/EnumTraits.h>
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#include <wtf/Forward.h>
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namespace WebCore {
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enum class ColorSpace : uint8_t {
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A98RGB,
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DisplayP3,
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LCH,
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Lab,
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LinearSRGB,
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ProPhotoRGB,
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Rec2020,
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SRGB,
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XYZ_D50,
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};
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WEBCORE_EXPORT TextStream& operator<<(TextStream&, ColorSpace);
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template<typename> struct ColorSpaceMapping;
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template<typename T> struct ColorSpaceMapping<A98RGB<T>> { static constexpr auto colorSpace { ColorSpace::A98RGB }; };
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template<typename T> struct ColorSpaceMapping<DisplayP3<T>> { static constexpr auto colorSpace { ColorSpace::DisplayP3 }; };
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template<typename T> struct ColorSpaceMapping<LCHA<T>> { static constexpr auto colorSpace { ColorSpace::LCH }; };
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template<typename T> struct ColorSpaceMapping<Lab<T>> { static constexpr auto colorSpace { ColorSpace::Lab }; };
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template<typename T> struct ColorSpaceMapping<LinearSRGBA<T>> { static constexpr auto colorSpace { ColorSpace::LinearSRGB }; };
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template<typename T> struct ColorSpaceMapping<ProPhotoRGB<T>> { static constexpr auto colorSpace { ColorSpace::ProPhotoRGB }; };
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template<typename T> struct ColorSpaceMapping<Rec2020<T>> { static constexpr auto colorSpace { ColorSpace::Rec2020 }; };
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template<typename T> struct ColorSpaceMapping<SRGBA<T>> { static constexpr auto colorSpace { ColorSpace::SRGB }; };
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template<typename T> struct ColorSpaceMapping<XYZA<T, WhitePoint::D50>> { static constexpr auto colorSpace { ColorSpace::XYZ_D50 }; };
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template<typename ColorType> constexpr ColorSpace ColorSpaceFor = ColorSpaceMapping<ColorType>::colorSpace;
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template<typename T, typename Functor> constexpr decltype(auto) callWithColorType(const ColorComponents<T, 4>& components, ColorSpace colorSpace, Functor&& functor)
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{
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switch (colorSpace) {
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case ColorSpace::A98RGB:
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return std::invoke(std::forward<Functor>(functor), makeFromComponents<A98RGB<T>>(components));
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case ColorSpace::DisplayP3:
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return std::invoke(std::forward<Functor>(functor), makeFromComponents<DisplayP3<T>>(components));
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case ColorSpace::LCH:
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return std::invoke(std::forward<Functor>(functor), makeFromComponents<LCHA<T>>(components));
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case ColorSpace::Lab:
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return std::invoke(std::forward<Functor>(functor), makeFromComponents<Lab<T>>(components));
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case ColorSpace::LinearSRGB:
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return std::invoke(std::forward<Functor>(functor), makeFromComponents<LinearSRGBA<T>>(components));
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case ColorSpace::ProPhotoRGB:
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return std::invoke(std::forward<Functor>(functor), makeFromComponents<ProPhotoRGB<T>>(components));
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case ColorSpace::Rec2020:
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return std::invoke(std::forward<Functor>(functor), makeFromComponents<Rec2020<T>>(components));
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case ColorSpace::SRGB:
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return std::invoke(std::forward<Functor>(functor), makeFromComponents<SRGBA<T>>(components));
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case ColorSpace::XYZ_D50:
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return std::invoke(std::forward<Functor>(functor), makeFromComponents<XYZA<T, WhitePoint::D50>>(components));
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}
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ASSERT_NOT_REACHED();
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return std::invoke(std::forward<Functor>(functor), makeFromComponents<SRGBA<T>>(components));
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}
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} // namespace WebCore
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namespace WTF {
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template<> struct EnumTraits<WebCore::ColorSpace> {
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using values = EnumValues<
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WebCore::ColorSpace,
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WebCore::ColorSpace::A98RGB,
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WebCore::ColorSpace::DisplayP3,
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WebCore::ColorSpace::LCH,
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WebCore::ColorSpace::Lab,
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WebCore::ColorSpace::LinearSRGB,
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WebCore::ColorSpace::ProPhotoRGB,
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WebCore::ColorSpace::Rec2020,
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WebCore::ColorSpace::SRGB,
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WebCore::ColorSpace::XYZ_D50
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>;
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};
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}
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