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/*
* 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. ``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
* 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/FontSizeAdjust.h>
#include <WebCore/StylePrimitiveNumericTypes.h>
namespace WebCore {
namespace Style {
// <'font-size-adjust'> = none | [ [ ex-height | cap-height | ch-width | ic-width | ic-height ]? [ from-font | <number [0,inf]> ] ]
// FIXME: Current spec grammar is `none | <number [0,∞]>`
// https://drafts.csswg.org/css-fonts-4/#propdef-font-size-adjust
struct FontSizeAdjust {
using Number = Style::Number<CSS::Nonnegative>;
using Metric = WebCore::FontSizeAdjust::Metric;
using ValueType = WebCore::FontSizeAdjust::ValueType;
FontSizeAdjust(CSS::Keyword::None) : m_platform { Metric::ExHeight } { }
FontSizeAdjust(Metric metric, CSS::Keyword::FromFont) : m_platform { metric, ValueType::FromFont, std::nullopt } { }
FontSizeAdjust(Metric metric, Number metricValue) : m_platform { metric, ValueType::Number, metricValue.value } { }
FontSizeAdjust(WebCore::FontSizeAdjust platform) : m_platform { platform } { }
bool isNone() const { return m_platform.isNone(); }
bool isFromFont() const { return m_platform.isFromFont(); }
Metric metric() const { return m_platform.metric; }
std::optional<float> metricValue() const { return m_platform.value; }
std::optional<float> resolvedMetricValue(const RenderStyle&) const;
WebCore::FontSizeAdjust platform() const { return m_platform; }
bool operator==(const FontSizeAdjust&) const = default;
private:
WebCore::FontSizeAdjust m_platform;
};
// MARK: - Conversion
template<> struct CSSValueConversion<FontSizeAdjust> { auto operator()(BuilderState&, const CSSValue&) -> FontSizeAdjust; };
// NOTE: `FontSizeAdjust` is special-cased to allow resolution of `from-font`.
template<> struct CSSValueCreation<FontSizeAdjust> { auto operator()(CSSValuePool&, const RenderStyle&, const FontSizeAdjust&) -> Ref<CSSValue>; };
// MARK: - Serialization
// NOTE: `FontSizeAdjust` is special-cased to allow resolution of `from-font`.
template<> struct Serialize<FontSizeAdjust> { void operator()(StringBuilder&, const CSS::SerializationContext&, const RenderStyle&, const FontSizeAdjust&); };
// MARK: - Blending
template<> struct Blending<FontSizeAdjust> {
auto canBlend(const FontSizeAdjust&, const FontSizeAdjust&) -> bool;
auto blend(const FontSizeAdjust&, const FontSizeAdjust&, const BlendingContext&) -> FontSizeAdjust;
};
// MARK: - Logging
TextStream& operator<<(TextStream&, const FontSizeAdjust&);
} // namespace Style
} // namespace WebCore
DEFINE_VARIANT_LIKE_CONFORMANCE(WebCore::Style::FontSizeAdjust)
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