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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
parent e8fc731b8c
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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22
Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
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@ -3385,6 +3385,26 @@ Optional<Array<RefPtr<CSSStyleValue>, 4>> Parser::parse_lch_like_color_value(Tok
return Array { move(l), move(c), move(h), move(alpha) };
}
// https://www.w3.org/TR/css-color-4/#funcdef-lch
RefPtr<CSSStyleValue> Parser::parse_lch_color_value(TokenStream<ComponentValue>& outer_tokens)
{
// lch() = lch( [<percentage> | <number> | none]
// [ <percentage> | <number> | none]
// [ <hue> | none]
// [ / [<alpha-value> | none] ]? )
auto maybe_color_values = parse_lch_like_color_value(outer_tokens, "lch"sv);
if (!maybe_color_values.has_value())
return {};
auto& color_values = *maybe_color_values;
return CSSLCHLike::create<CSSLCH>(color_values[0].release_nonnull(),
color_values[1].release_nonnull(),
color_values[2].release_nonnull(),
color_values[3].release_nonnull());
}
// https://www.w3.org/TR/css-color-4/#funcdef-oklch
RefPtr<CSSStyleValue> Parser::parse_oklch_color_value(TokenStream<ComponentValue>& outer_tokens)
{
@ -3490,6 +3510,8 @@ RefPtr<CSSStyleValue> Parser::parse_color_value(TokenStream<ComponentValue>& tok
return hwb;
if (auto lab = parse_lab_color_value(tokens))
return lab;
if (auto lch = parse_lch_color_value(tokens))
return lch;
if (auto oklab = parse_oklab_color_value(tokens))
return oklab;
if (auto oklch = parse_oklch_color_value(tokens))