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a27d269721
Previously, some StyleValues created a large number of intermediate strings during serialization. Passing a StringBUilder into the serialization function allows us to avoid a large number of these unnecessary allocations.
64 lines
2.8 KiB
C++
64 lines
2.8 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <andreas@ladybird.org>
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* Copyright (c) 2021, Tobias Christiansen <tobyase@serenityos.org>
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* Copyright (c) 2021-2023, Sam Atkins <atkinssj@serenityos.org>
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* Copyright (c) 2022-2023, MacDue <macdue@dueutil.tech>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <LibWeb/CSS/Enums.h>
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#include <LibWeb/CSS/PercentageOr.h>
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#include <LibWeb/CSS/StyleValues/EdgeStyleValue.h>
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#include <LibWeb/CSS/StyleValues/StyleValue.h>
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namespace Web::CSS {
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class PositionStyleValue final : public StyleValueWithDefaultOperators<PositionStyleValue> {
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public:
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static ValueComparingNonnullRefPtr<PositionStyleValue const> create(ValueComparingNonnullRefPtr<EdgeStyleValue const> edge_x, ValueComparingNonnullRefPtr<EdgeStyleValue const> edge_y)
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{
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return adopt_ref(*new (nothrow) PositionStyleValue(move(edge_x), move(edge_y)));
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}
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static ValueComparingNonnullRefPtr<PositionStyleValue const> create_center()
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{
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return adopt_ref(*new (nothrow) PositionStyleValue(
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EdgeStyleValue::create(PositionEdge::Center, {}),
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EdgeStyleValue::create(PositionEdge::Center, {})));
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}
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static ValueComparingNonnullRefPtr<PositionStyleValue const> create_computed_center()
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{
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return adopt_ref(*new (nothrow) PositionStyleValue(
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EdgeStyleValue::create({}, PercentageStyleValue::create(Percentage { 50 })),
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EdgeStyleValue::create({}, PercentageStyleValue::create(Percentage { 50 }))));
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}
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virtual ~PositionStyleValue() override = default;
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ValueComparingNonnullRefPtr<EdgeStyleValue const> edge_x() const { return m_properties.edge_x; }
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ValueComparingNonnullRefPtr<EdgeStyleValue const> edge_y() const { return m_properties.edge_y; }
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bool is_center(SerializationMode) const;
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CSSPixelPoint resolved(Layout::Node const&, CSSPixelRect const&) const;
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ValueComparingNonnullRefPtr<PositionStyleValue const> with_resolved_keywords() const;
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virtual ValueComparingNonnullRefPtr<StyleValue const> absolutized(ComputationContext const& computation_context) const override;
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virtual void serialize(StringBuilder&, SerializationMode) const override;
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bool properties_equal(PositionStyleValue const& other) const { return m_properties == other.m_properties; }
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private:
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PositionStyleValue(ValueComparingNonnullRefPtr<EdgeStyleValue const> edge_x, ValueComparingNonnullRefPtr<EdgeStyleValue const> edge_y)
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: StyleValueWithDefaultOperators(Type::Position)
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, m_properties { .edge_x = move(edge_x), .edge_y = move(edge_y) }
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{
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}
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struct Properties {
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ValueComparingNonnullRefPtr<EdgeStyleValue const> edge_x;
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ValueComparingNonnullRefPtr<EdgeStyleValue const> edge_y;
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bool operator==(Properties const&) const = default;
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} m_properties;
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};
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}
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