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LibWeb/CSS: Introduce CSSNumericValue and CSSUnitValue type stubs

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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.
This commit is contained in:
Sam Atkins 2024-08-14 16:25:48 +01:00 • committed by Sam Atkins
commit 8952764267
Notes: github-actions[bot] 2024-08-21 09:53:21 +00:00
20 changed files with 225 additions and 107 deletions
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10
Userland/Libraries/LibWeb/CSS/StyleValues/AngleStyleValue.h
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@ -1,7 +1,7 @@
/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Tobias Christiansen <tobyase@serenityos.org>
* Copyright (c) 2021-2023, Sam Atkins <atkinssj@serenityos.org>
* Copyright (c) 2021-2024, Sam Atkins <sam@ladybird.org>
* Copyright (c) 2022-2023, MacDue <macdue@dueutil.tech>
*
* SPDX-License-Identifier: BSD-2-Clause
@ -10,11 +10,11 @@
#pragma once
#include <LibWeb/CSS/Angle.h>
#include <LibWeb/CSS/CSSStyleValue.h>
#include <LibWeb/CSS/StyleValues/CSSUnitValue.h>
namespace Web::CSS {
class AngleStyleValue : public StyleValueWithDefaultOperators<AngleStyleValue> {
class AngleStyleValue : public CSSUnitValue {
public:
static ValueComparingNonnullRefPtr<AngleStyleValue> create(Angle angle)
{
@ -23,10 +23,12 @@ public:
virtual ~AngleStyleValue() override;
Angle const& angle() const { return m_angle; }
virtual double value() const override { return m_angle.raw_value(); }
virtual StringView unit() const override { return m_angle.unit_name(); }
virtual String to_string() const override;
bool properties_equal(AngleStyleValue const& other) const;
bool equals(CSSStyleValue const& other) const override;
private:
explicit AngleStyleValue(Angle angle);