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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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8
Userland/Libraries/LibWeb/CSS/StyleValues/LengthStyleValue.cpp
View file

@ -34,4 +34,12 @@ ValueComparingNonnullRefPtr<CSSStyleValue const> LengthStyleValue::absolutized(C
return *this;
}
bool LengthStyleValue::equals(CSSStyleValue const& other) const
{
if (type() != other.type())
return false;
auto const& other_length = other.as_length();
return m_length == other_length.m_length;
}
}