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https://github.com/LadybirdBrowser/ladybird.git
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b9ed64d1ce
Store overflow-clip-margin as a structured style value instead of collapsing it into generic keyword/length lists during parsing. Keep omitted visual-box as a distinct state so painting can apply the spec default per element type (content-box for replaced, padding-box otherwise), while preserving canonical serialization.
58 lines
2 KiB
C++
58 lines
2 KiB
C++
/*
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* Copyright (c) 2026, mikiubo <michele.uboldi@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "OverflowClipMarginStyleValue.h"
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#include <LibWeb/CSS/StyleValues/LengthStyleValue.h>
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namespace Web::CSS {
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ValueComparingNonnullRefPtr<OverflowClipMarginStyleValue const> OverflowClipMarginStyleValue::create(Optional<BackgroundBox> visual_box, NonnullRefPtr<StyleValue const> offset)
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{
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return adopt_ref(*new (nothrow) OverflowClipMarginStyleValue(visual_box, move(offset)));
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}
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OverflowClipMarginStyleValue::OverflowClipMarginStyleValue(Optional<BackgroundBox> visual_box, NonnullRefPtr<StyleValue const> offset)
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: StyleValueWithDefaultOperators(Type::OverflowClipMargin)
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, m_visual_box(visual_box)
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, m_offset(move(offset))
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{
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}
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OverflowClipMarginStyleValue::~OverflowClipMarginStyleValue() = default;
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// https://drafts.csswg.org/css-overflow-4/#overflow-clip-margin
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void OverflowClipMarginStyleValue::serialize(StringBuilder& builder, SerializationMode mode) const
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{
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bool has_explicit_box = m_visual_box.has_value();
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bool is_default_box = has_explicit_box && *m_visual_box == BackgroundBox::PaddingBox;
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bool is_zero_offset = m_offset->is_length() && m_offset->as_length().length().raw_value() == 0;
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if (!has_explicit_box || is_default_box) {
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m_offset->serialize(builder, mode);
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} else if (is_zero_offset) {
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builder.append(CSS::to_string(*m_visual_box));
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} else {
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builder.append(CSS::to_string(*m_visual_box));
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builder.append(' ');
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m_offset->serialize(builder, mode);
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}
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}
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ValueComparingNonnullRefPtr<StyleValue const> OverflowClipMarginStyleValue::absolutized(ComputationContext const& context) const
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{
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auto new_offset = m_offset->absolutized(context);
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if (new_offset->equals(m_offset))
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return *this;
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return create(m_visual_box, move(new_offset));
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}
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bool OverflowClipMarginStyleValue::properties_equal(OverflowClipMarginStyleValue const& other) const
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{
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return m_visual_box == other.m_visual_box
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&& m_offset == other.m_offset;
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}
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}
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