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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.
44 lines
1.6 KiB
C++
44 lines
1.6 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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#include "BackgroundSizeStyleValue.h"
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namespace Web::CSS {
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BackgroundSizeStyleValue::BackgroundSizeStyleValue(ValueComparingNonnullRefPtr<StyleValue const> size_x, ValueComparingNonnullRefPtr<StyleValue const> size_y)
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: StyleValueWithDefaultOperators(Type::BackgroundSize)
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, m_properties { .size_x = move(size_x), .size_y = move(size_y) }
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{
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}
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BackgroundSizeStyleValue::~BackgroundSizeStyleValue() = default;
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void BackgroundSizeStyleValue::serialize(StringBuilder& builder, SerializationMode mode) const
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{
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if (m_properties.size_x->has_auto() && m_properties.size_y->has_auto()) {
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builder.append("auto"sv);
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return;
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}
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m_properties.size_x->serialize(builder, mode);
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builder.append(' ');
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m_properties.size_y->serialize(builder, mode);
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}
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ValueComparingNonnullRefPtr<StyleValue const> BackgroundSizeStyleValue::absolutized(ComputationContext const& computation_context) const
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{
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auto absolutized_size_x = m_properties.size_x->absolutized(computation_context);
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auto absolutized_size_y = m_properties.size_y->absolutized(computation_context);
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if (absolutized_size_x == m_properties.size_x && absolutized_size_y == m_properties.size_y)
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return *this;
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return BackgroundSizeStyleValue::create(absolutized_size_x, absolutized_size_y);
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}
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}
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