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8952764267
CSS-Typed-OM has the following hierarchy:
CSSStyleValue
- CSSNumericValue
- CSSUnitValue
- CSSMathValue
- ...various math functions...
Somewhat unintuitively, numbers are also stored using CSSUnitValue with
`unit = "number"`.
There are no distinct classes for LengthStyleValue, etc in the spec, but
they're convenient for us, so they are implemented as subclasses of
CSSUnitValue, at least for now.
65 lines
1.5 KiB
C++
65 lines
1.5 KiB
C++
/*
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* Copyright (c) 2022-2023, Sam Atkins <atkinssj@serenityos.org>
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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 <AK/String.h>
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#include <LibWeb/Forward.h>
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namespace Web::CSS {
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class Frequency {
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public:
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enum class Type {
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Hz,
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kHz
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};
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static Optional<Type> unit_from_name(StringView);
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Frequency(double value, Type type);
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static Frequency make_hertz(double);
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Frequency percentage_of(Percentage const&) const;
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String to_string() const;
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double to_hertz() const;
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Type type() const { return m_type; }
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double raw_value() const { return m_value; }
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StringView unit_name() const;
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bool operator==(Frequency const& other) const
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{
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return m_type == other.m_type && m_value == other.m_value;
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}
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int operator<=>(Frequency const& other) const
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{
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auto this_hertz = to_hertz();
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auto other_hertz = other.to_hertz();
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if (this_hertz < other_hertz)
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return -1;
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if (this_hertz > other_hertz)
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return 1;
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return 0;
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}
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static Frequency resolve_calculated(NonnullRefPtr<CalculatedStyleValue> const&, Layout::Node const&, Frequency const& reference_value);
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private:
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Type m_type;
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double m_value { 0 };
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};
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}
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template<>
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struct AK::Formatter<Web::CSS::Frequency> : Formatter<StringView> {
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ErrorOr<void> format(FormatBuilder& builder, Web::CSS::Frequency const& frequency)
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{
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return Formatter<StringView>::format(builder, frequency.to_string());
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}
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};
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