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afa95c2815
The existing resolve methods are not to spec and we are working to replace them with new ones based on the `simplify_a_calculation_tree` method. These are marked as deprecated rather than replaced outright as work will need to be done on the caller side to be made compatible with the new methods, for instance the new methods can fail to resolve (e.g. if we are missing required context), where the existing methods will always resolve (albeit sometimes with an incorrect value). No functionality changes.
78 lines
1.9 KiB
C++
78 lines
1.9 KiB
C++
/*
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* Copyright (c) 2022-2025, Sam Atkins <sam@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/Frequency.h>
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#include <LibWeb/CSS/Percentage.h>
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#include <LibWeb/CSS/StyleValues/CalculatedStyleValue.h>
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namespace Web::CSS {
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Frequency::Frequency(double value, Type type)
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: m_type(type)
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, m_value(value)
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{
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}
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Frequency Frequency::make_hertz(double value)
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{
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return { value, Type::Hz };
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}
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Frequency Frequency::percentage_of(Percentage const& percentage) const
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{
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return Frequency { percentage.as_fraction() * m_value, m_type };
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}
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String Frequency::to_string(SerializationMode serialization_mode) const
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{
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if (serialization_mode == SerializationMode::ResolvedValue)
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return MUST(String::formatted("{}hz", to_hertz()));
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return MUST(String::formatted("{}{}", raw_value(), unit_name()));
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}
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double Frequency::to_hertz() const
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{
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switch (m_type) {
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case Type::Hz:
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return m_value;
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case Type::kHz:
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return m_value * 1000;
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}
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VERIFY_NOT_REACHED();
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}
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StringView Frequency::unit_name() const
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{
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switch (m_type) {
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case Type::Hz:
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return "hz"sv;
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case Type::kHz:
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return "khz"sv;
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}
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VERIFY_NOT_REACHED();
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}
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Optional<Frequency::Type> Frequency::unit_from_name(StringView name)
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{
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if (name.equals_ignoring_ascii_case("hz"sv)) {
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return Type::Hz;
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} else if (name.equals_ignoring_ascii_case("khz"sv)) {
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return Type::kHz;
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}
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return {};
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}
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Frequency Frequency::resolve_calculated(NonnullRefPtr<CalculatedStyleValue const> const& calculated, Layout::Node const& layout_node, Frequency const& reference_value)
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{
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return calculated->resolve_frequency_deprecated(
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{
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.percentage_basis = reference_value,
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.length_resolution_context = Length::ResolutionContext::for_layout_node(layout_node),
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})
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.value();
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}
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}
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