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LibWeb: Parse the shape-outside property

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Callum Law 2025-10-17 00:49:27 +13:00 • committed by Tim Ledbetter
commit 01c5b6f74f
Notes: github-actions[bot] 2025-10-17 10:11:47 +00:00
17 changed files with 429 additions and 344 deletions
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58
Libraries/LibWeb/CSS/Parser/PropertyParsing.cpp
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@ -782,6 +782,10 @@ Parser::ParseErrorOr<NonnullRefPtr<StyleValue const>> Parser::parse_css_value(Pr
if (auto parsed_value = parse_scrollbar_gutter_value(tokens); parsed_value && !tokens.has_next_token())
return parsed_value.release_nonnull();
return ParseError::SyntaxError;
case PropertyID::ShapeOutside:
if (auto parsed_value = parse_shape_outside_value(tokens); parsed_value && !tokens.has_next_token())
return parsed_value.release_nonnull();
return ParseError::SyntaxError;
case PropertyID::StrokeDasharray:
if (auto parsed_value = parse_stroke_dasharray_value(tokens); parsed_value && !tokens.has_next_token())
return parsed_value.release_nonnull();
@ -2282,6 +2286,60 @@ RefPtr<StyleValue const> Parser::parse_single_shadow_value(TokenStream<Component
return ShadowStyleValue::create(shadow_type, color, offset_x.release_nonnull(), offset_y.release_nonnull(), blur_radius, spread_distance, placement.release_value());
}
RefPtr<StyleValue const> Parser::parse_shape_outside_value(TokenStream<ComponentValue>& tokens)
{
// none | [ <basic-shape> || <shape-box> ] | <image>
auto transaction = tokens.begin_transaction();
// none
if (auto maybe_none = parse_all_as_single_keyword_value(tokens, Keyword::None)) {
transaction.commit();
return maybe_none;
}
// <image>
if (auto maybe_image = parse_image_value(tokens)) {
transaction.commit();
return maybe_image;
}
// [ <basic-shape> || <shape-box> ]
RefPtr<StyleValue const> basic_shape_value;
RefPtr<StyleValue const> shape_box_value;
while (tokens.has_next_token()) {
if (auto maybe_basic_shape_value = parse_basic_shape_value(tokens)) {
if (basic_shape_value)
return nullptr;
basic_shape_value = maybe_basic_shape_value;
continue;
}
if (auto maybe_keyword_value = parse_keyword_value(tokens)) {
if (shape_box_value)
return nullptr;
if (!keyword_to_shape_box(maybe_keyword_value->to_keyword()).has_value())
return nullptr;
shape_box_value = maybe_keyword_value;
continue;
}
return nullptr;
}
if (!basic_shape_value && !shape_box_value)
return nullptr;
transaction.commit();
if (basic_shape_value && !shape_box_value)
return basic_shape_value;
if (!basic_shape_value && shape_box_value)
return shape_box_value;
return StyleValueList::create({ basic_shape_value.release_nonnull(), shape_box_value.release_nonnull() }, StyleValueList::Separator::Space);
}
RefPtr<StyleValue const> Parser::parse_rotate_value(TokenStream<ComponentValue>& tokens)
{
// Value: none | <angle> | [ x | y | z | <number>{3} ] && <angle>