ladybird/Libraries/LibWeb/CSS/StyleValues/AnchorSizeStyleValue.h
Jelle Raaijmakers c4f5e7bee3 LibWeb: Implement anchor-size(..) function parsing
This parses `anchor-size(..)` functions in CSS, but does not yet result
in a useful `Size`: we need style & layout interleaving similar to
container queries for this, since the resulting value depends on layout
results.

Not supported yet: `anchor-size()` appearing inside a `calc()` node.

Adds 4280 WPT subtest passes in `css/css-anchor-position`.
2025-07-30 18:13:59 +01:00

46 lines
1.6 KiB
C++

/*
* Copyright (c) 2025, Jelle Raaijmakers <jelle@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/FlyString.h>
#include <LibWeb/CSS/CSSStyleValue.h>
#include <LibWeb/CSS/PercentageOr.h>
namespace Web::CSS {
// https://drafts.csswg.org/css-anchor-position-1/#funcdef-anchor-size
class AnchorSizeStyleValue final : public StyleValueWithDefaultOperators<AnchorSizeStyleValue> {
public:
static ValueComparingNonnullRefPtr<AnchorSizeStyleValue const> create(Optional<FlyString> const& anchor_name,
Optional<AnchorSize> const& anchor_size,
ValueComparingRefPtr<CSSStyleValue const> const& fallback_value);
virtual ~AnchorSizeStyleValue() override = default;
virtual String to_string(SerializationMode) const override;
bool properties_equal(AnchorSizeStyleValue const& other) const { return m_properties == other.m_properties; }
Optional<FlyString const&> anchor_name() const { return m_properties.anchor_name; }
Optional<AnchorSize> anchor_size() const { return m_properties.anchor_size; }
ValueComparingRefPtr<CSSStyleValue const> fallback_value() const
{
return m_properties.fallback_value;
}
private:
AnchorSizeStyleValue(Optional<FlyString> const& anchor_name, Optional<AnchorSize> const& anchor_size,
ValueComparingRefPtr<CSSStyleValue const> const& fallback_value);
struct Properties {
Optional<FlyString> anchor_name;
Optional<AnchorSize> anchor_size;
ValueComparingRefPtr<CSSStyleValue const> fallback_value;
bool operator==(Properties const&) const = default;
} m_properties;
};
}