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LibWeb/CSS: Add support for the lch color function

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This makes us pass all `css/css-color/lch-00*.html` tests.
This commit is contained in:
Lucas CHOLLET 2024-10-27 20:19:10 -04:00 • committed by Andreas Kling
commit f253246a6c
Notes: github-actions[bot] 2024-10-28 22:38:03 +00:00
5 changed files with 56 additions and 1 deletions
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17
Userland/Libraries/LibWeb/CSS/StyleValues/CSSLCHLike.cpp
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@ -25,6 +25,23 @@ bool CSSLCHLike::equals(CSSStyleValue const& other) const
return m_properties == other_oklch_like.m_properties;
}
Color CSSLCH::to_color(Optional<Layout::NodeWithStyle const&>) const
{
auto const l_val = clamp(resolve_with_reference_value(m_properties.l, 100).value_or(0), 0, 100);
auto const c_val = resolve_with_reference_value(m_properties.c, 150).value_or(0);
auto const h_val = AK::to_radians(resolve_hue(m_properties.h).value_or(0));
auto const alpha_val = resolve_alpha(m_properties.alpha).value_or(1);
return Color::from_lab(l_val, c_val * cos(h_val), c_val * sin(h_val), alpha_val);
}
// https://www.w3.org/TR/css-color-4/#serializing-lab-lch
String CSSLCH::to_string() const
{
// FIXME: Do this properly, taking unresolved calculated values into account.
return serialize_a_srgb_value(to_color({}));
}
Color CSSOKLCH::to_color(Optional<Layout::NodeWithStyle const&>) const
{
auto const l_val = clamp(resolve_with_reference_value(m_properties.l, 1.0).value_or(0), 0, 1);