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/*
* Copyright (C) 2018-2025 Apple Inc. All rights reserved.
* Copyright (C) 2025 Samuel Weinig <sam@webkit.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <WebCore/StyleLengthWrapper.h>
namespace WebCore {
class FontMetrics;
namespace Style {
struct TextDecorationThicknessLength : LengthWrapperBase<LengthPercentage<CSS::AllUnzoomed>> {
using Base::Base;
};
// <'text-decoration-thickness'> = auto | from-font | <length-percentage>
// https://drafts.csswg.org/css-text-decor-4/#propdef-text-decoration-thickness
struct TextDecorationThickness {
TextDecorationThickness(CSS::Keyword::Auto keyword)
: m_value { keyword }
{
}
TextDecorationThickness(CSS::Keyword::FromFont keyword)
: m_value { keyword }
{
}
TextDecorationThickness(TextDecorationThicknessLength&& length)
: m_value { WTFMove(length) }
{
}
bool isAuto() const { return WTF::holdsAlternative<CSS::Keyword::Auto>(m_value); }
bool isFromFont() const { return WTF::holdsAlternative<CSS::Keyword::FromFont>(m_value); }
bool isLength() const { return WTF::holdsAlternative<TextDecorationThicknessLength>(m_value); }
float resolve(const RenderStyle&) const;
template<typename... F> decltype(auto) switchOn(F&&... f) const
{
return WTF::switchOn(m_value, std::forward<F>(f)...);
}
bool operator==(const TextDecorationThickness&) const = default;
private:
Variant<CSS::Keyword::Auto, CSS::Keyword::FromFont, TextDecorationThicknessLength> m_value;
};
// MARK: - Conversion
template<> struct CSSValueConversion<TextDecorationThickness> { auto operator()(BuilderState&, const CSSValue&) -> TextDecorationThickness; };
// MARK: - Blending
template<> struct Blending<TextDecorationThickness> {
auto canBlend(const TextDecorationThickness&, const TextDecorationThickness&, const RenderStyle&, const RenderStyle&) -> bool;
auto blend(const TextDecorationThickness&, const TextDecorationThickness&, const RenderStyle&, const RenderStyle&, const BlendingContext&) -> TextDecorationThickness;
};
} // namespace Style
} // namespace WebCore
DEFINE_VARIANT_LIKE_CONFORMANCE(WebCore::Style::TextDecorationThicknessLength)
DEFINE_VARIANT_LIKE_CONFORMANCE(WebCore::Style::TextDecorationThickness)
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