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LibWeb: Implement CSS Frequency class

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This corresponds to `<frequency>` in the grammar.
This commit is contained in:
Sam Atkins 2022-02-21 17:49:47 +00:00 • committed by Andreas Kling
parent 355d1936f2
commit bd79c303f6
9 changed files with 267 additions and 5 deletions
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53
Userland/Libraries/LibWeb/CSS/Frequency.h Normal file
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/*
* Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/RefPtr.h>
#include <LibWeb/Forward.h>
namespace Web::CSS {
class Frequency {
public:
enum class Type {
Calculated,
Hz,
kHz
};
static Optional<Type> unit_from_name(StringView);
Frequency(int value, Type type);
Frequency(float value, Type type);
static Frequency make_calculated(NonnullRefPtr<CalculatedStyleValue>);
static Frequency make_hertz(float);
Frequency percentage_of(Percentage const&) const;
bool is_calculated() const { return m_type == Type::Calculated; }
String to_string() const;
float to_hertz() const;
bool operator==(Frequency const& other) const
{
if (is_calculated())
return m_calculated_style == other.m_calculated_style;
return m_type == other.m_type && m_value == other.m_value;
}
bool operator!=(Frequency const& other) const
{
return !(*this == other);
}
private:
StringView unit_name() const;
Type m_type;
float m_value { 0 };
RefPtr<CalculatedStyleValue> m_calculated_style;
};
}