mirror of
https://github.com/SerenityOS/serenity
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9a31c3d56b
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.
(cherry picked from commit 895276426791567f22a612c4a40fa177571cc03e)
66 lines
1.3 KiB
C++
66 lines
1.3 KiB
C++
/*
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* Copyright (c) 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/Optional.h>
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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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// https://drafts.csswg.org/css-grid-2/#typedef-flex
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class Flex {
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public:
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enum class Type {
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Fr,
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};
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static Optional<Type> unit_from_name(StringView);
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Flex(double value, Type type);
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static Flex make_fr(double);
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Flex percentage_of(Percentage const&) const;
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String to_string() const;
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double to_fr() 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==(Flex 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<=>(Flex const& other) const
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{
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auto this_fr = to_fr();
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auto other_fr = other.to_fr();
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if (this_fr < other_fr)
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return -1;
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if (this_fr > other_fr)
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return 1;
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return 0;
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}
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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::Flex> : Formatter<StringView> {
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ErrorOr<void> format(FormatBuilder& builder, Web::CSS::Flex const& flex)
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{
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return Formatter<StringView>::format(builder, flex.to_string());
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}
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};
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