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930ee495e7
This has always been a bit of a hack. Initially it made sense as a lot of properties that accept a length also accept `auto`, but while convenient, that leads to problems: It's easy to forget to check if a length is `auto`, and places that don't accept it end up with an invalid state lurking in the type system, which makes things unclear.
124 lines
2.9 KiB
C++
124 lines
2.9 KiB
C++
/*
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* Copyright (c) 2022, Andreas Kling <andreas@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWeb/CSS/Size.h>
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namespace Web::CSS {
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Size::Size(Type type, Optional<LengthPercentage> length_percentage)
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: m_type(type)
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, m_length_percentage(move(length_percentage))
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{
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}
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CSSPixels Size::to_px(Layout::Node const& node, CSSPixels reference_value) const
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{
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if (!m_length_percentage.has_value())
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return 0;
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return m_length_percentage->resolved(node, reference_value).to_px(node);
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}
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Size Size::make_auto()
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{
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return Size { Type::Auto };
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}
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Size Size::make_px(CSSPixels px)
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{
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return make_length(Length::make_px(px));
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}
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Size Size::make_length(Length length)
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{
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return Size { Type::Length, move(length) };
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}
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Size Size::make_percentage(Percentage percentage)
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{
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return Size { Type::Percentage, move(percentage) };
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}
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Size Size::make_calculated(NonnullRefPtr<CalculatedStyleValue const> calculated)
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{
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return Size { Type::Calculated, move(calculated) };
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}
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Size Size::make_length_percentage(LengthPercentage const& length_percentage)
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{
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if (length_percentage.is_length())
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return make_length(length_percentage.length());
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if (length_percentage.is_percentage())
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return make_percentage(length_percentage.percentage());
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VERIFY(length_percentage.is_calculated());
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return make_calculated(length_percentage.calculated());
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}
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Size Size::make_min_content()
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{
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return Size { Type::MinContent };
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}
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Size Size::make_max_content()
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{
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return Size { Type::MaxContent };
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}
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Size Size::make_fit_content(LengthPercentage available_space)
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{
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return Size { Type::FitContent, move(available_space) };
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}
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Size Size::make_fit_content()
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{
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return Size { Type::FitContent };
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}
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Size Size::make_none()
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{
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return Size { Type::None };
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}
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bool Size::contains_percentage() const
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{
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switch (m_type) {
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case Type::Auto:
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case Type::MinContent:
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case Type::MaxContent:
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case Type::None:
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return false;
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case Type::FitContent:
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// FIXME: This should return m_length_percentage.contains_percentage()
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// but we have to update a lot of code to handle this.
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return false;
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default:
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return m_length_percentage->contains_percentage();
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}
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}
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String Size::to_string(SerializationMode mode) const
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{
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switch (m_type) {
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case Type::Auto:
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return "auto"_string;
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case Type::Calculated:
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case Type::Length:
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case Type::Percentage:
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return m_length_percentage->to_string(mode);
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case Type::MinContent:
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return "min-content"_string;
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case Type::MaxContent:
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return "max-content"_string;
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case Type::FitContent:
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if (!m_length_percentage.has_value())
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return "fit-content"_string;
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return MUST(String::formatted("fit-content({})", m_length_percentage->to_string(mode)));
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case Type::None:
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return "none"_string;
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}
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VERIFY_NOT_REACHED();
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}
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}
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