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LibWeb: Parse grid-column and grid-row CSS values

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martinfalisse 2022-08-23 20:00:16 +02:00 • committed by Andreas Kling
parent 44d08b81b7
commit 7bb3a8d646
5 changed files with 131 additions and 0 deletions
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48
Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
View file

@ -5352,6 +5352,46 @@ RefPtr<StyleValue> Parser::parse_grid_track_placement(Vector<ComponentValue> con
return {};
}
RefPtr<StyleValue> Parser::parse_grid_track_placement_shorthand_value(Vector<ComponentValue> const& component_values)
{
auto tokens = TokenStream { component_values };
auto current_token = tokens.next_token().token();
if (!tokens.has_next_token()) {
if (current_token.to_string() == "auto"sv)
return GridTrackPlacementShorthandStyleValue::create(CSS::GridTrackPlacement::make_auto());
if (current_token.is(Token::Type::Number) && current_token.number().is_integer())
return GridTrackPlacementShorthandStyleValue::create(CSS::GridTrackPlacement(current_token.number_value()));
return {};
}
auto calculate_grid_track_placement = [](auto& current_token, auto& tokens) -> CSS::GridTrackPlacement {
auto grid_track_placement = CSS::GridTrackPlacement();
if (current_token.to_string() == "span"sv) {
grid_track_placement.set_has_span(true);
tokens.skip_whitespace();
current_token = tokens.next_token().token();
}
if (current_token.is(Token::Type::Number) && current_token.number().is_integer())
grid_track_placement.set_position(static_cast<int>(current_token.number_value()));
return grid_track_placement;
};
auto first_grid_track_placement = calculate_grid_track_placement(current_token, tokens);
if (!tokens.has_next_token())
return GridTrackPlacementShorthandStyleValue::create(CSS::GridTrackPlacement(first_grid_track_placement));
tokens.skip_whitespace();
current_token = tokens.next_token().token();
tokens.skip_whitespace();
current_token = tokens.next_token().token();
auto second_grid_track_placement = calculate_grid_track_placement(current_token, tokens);
if (!tokens.has_next_token())
return GridTrackPlacementShorthandStyleValue::create(GridTrackPlacementStyleValue::create(first_grid_track_placement), GridTrackPlacementStyleValue::create(second_grid_track_placement));
return {};
}
Parser::ParseErrorOr<NonnullRefPtr<StyleValue>> Parser::parse_css_value(PropertyID property_id, TokenStream<ComponentValue>& tokens)
{
auto function_contains_var_or_attr = [](Function const& function, auto&& recurse) -> bool {
@ -5482,6 +5522,10 @@ Parser::ParseErrorOr<NonnullRefPtr<StyleValue>> Parser::parse_css_value(Property
if (auto parsed_value = parse_font_family_value(component_values))
return parsed_value.release_nonnull();
return ParseError::SyntaxError;
case PropertyID::GridColumn:
if (auto parsed_value = parse_grid_track_placement_shorthand_value(component_values))
return parsed_value.release_nonnull();
return ParseError::SyntaxError;
case PropertyID::GridColumnEnd:
if (auto parsed_value = parse_grid_track_placement(component_values))
return parsed_value.release_nonnull();
@ -5490,6 +5534,10 @@ Parser::ParseErrorOr<NonnullRefPtr<StyleValue>> Parser::parse_css_value(Property
if (auto parsed_value = parse_grid_track_placement(component_values))
return parsed_value.release_nonnull();
return ParseError::SyntaxError;
case PropertyID::GridRow:
if (auto parsed_value = parse_grid_track_placement_shorthand_value(component_values))
return parsed_value.release_nonnull();
return ParseError::SyntaxError;
case PropertyID::GridRowEnd:
if (auto parsed_value = parse_grid_track_placement(component_values))
return parsed_value.release_nonnull();

1
Userland/Libraries/LibWeb/CSS/Parser/Parser.h
View file

@ -361,6 +361,7 @@ private:
RefPtr<StyleValue> parse_transform_origin_value(Vector<ComponentValue> const&);
RefPtr<StyleValue> parse_grid_track_sizes(Vector<ComponentValue> const&);
RefPtr<StyleValue> parse_grid_track_placement(Vector<ComponentValue> const&);
RefPtr<StyleValue> parse_grid_track_placement_shorthand_value(Vector<ComponentValue> const&);
// calc() parsing, according to https://www.w3.org/TR/css-values-3/#calc-syntax
OwnPtr<CalculatedStyleValue::CalcSum> parse_calc_sum(TokenStream<ComponentValue>&);

28
Userland/Libraries/LibWeb/CSS/Properties.json
View file

@ -694,6 +694,20 @@
"normal"
]
},
"grid-column": {
"inherited": false,
"initial": "auto",
"valid-identifiers": [
"auto"
],
"valid-types": [
"string"
],
"longhands": [
"grid-column-end",
"grid-column-start"
]
},
"grid-column-end": {
"inherited": false,
"initial": "auto",
@ -714,6 +728,20 @@
"string"
]
},
"grid-row": {
"inherited": false,
"initial": "auto",
"valid-identifiers": [
"auto"
],
"valid-types": [
"string"
],
"longhands": [
"grid-row-end",
"grid-row-start"
]
},
"grid-row-end": {
"inherited": false,
"initial": "auto",

28
Userland/Libraries/LibWeb/CSS/ResolvedCSSStyleDeclaration.cpp
View file

@ -295,10 +295,38 @@ RefPtr<StyleValue> ResolvedCSSStyleDeclaration::style_value_for_property(Layout:
return IdentifierStyleValue::create(to_value_id(layout_node.computed_values().flex_wrap()));
case CSS::PropertyID::Float:
return IdentifierStyleValue::create(to_value_id(layout_node.computed_values().float_()));
case CSS::PropertyID::GridColumn: {
auto maybe_grid_column_end = property(CSS::PropertyID::GridColumnEnd);
auto maybe_grid_column_start = property(CSS::PropertyID::GridColumnStart);
RefPtr<GridTrackPlacementStyleValue> grid_column_start, grid_column_end;
if (maybe_grid_column_end.has_value()) {
VERIFY(maybe_grid_column_end.value().value->is_grid_track_placement());
grid_column_end = maybe_grid_column_end.value().value->as_grid_track_placement();
}
if (maybe_grid_column_start.has_value()) {
VERIFY(maybe_grid_column_start.value().value->is_grid_track_placement());
grid_column_start = maybe_grid_column_start.value().value->as_grid_track_placement();
}
return GridTrackPlacementShorthandStyleValue::create(grid_column_end.release_nonnull(), grid_column_start.release_nonnull());
}
case CSS::PropertyID::GridColumnEnd:
return GridTrackPlacementStyleValue::create(layout_node.computed_values().grid_column_end());
case CSS::PropertyID::GridColumnStart:
return GridTrackPlacementStyleValue::create(layout_node.computed_values().grid_column_start());
case CSS::PropertyID::GridRow: {
auto maybe_grid_row_end = property(CSS::PropertyID::GridRowEnd);
auto maybe_grid_row_start = property(CSS::PropertyID::GridRowStart);
RefPtr<GridTrackPlacementStyleValue> grid_row_start, grid_row_end;
if (maybe_grid_row_end.has_value()) {
VERIFY(maybe_grid_row_end.value().value->is_grid_track_placement());
grid_row_end = maybe_grid_row_end.value().value->as_grid_track_placement();
}
if (maybe_grid_row_start.has_value()) {
VERIFY(maybe_grid_row_start.value().value->is_grid_track_placement());
grid_row_start = maybe_grid_row_start.value().value->as_grid_track_placement();
}
return GridTrackPlacementShorthandStyleValue::create(grid_row_end.release_nonnull(), grid_row_start.release_nonnull());
}
case CSS::PropertyID::GridRowEnd:
return GridTrackPlacementStyleValue::create(layout_node.computed_values().grid_row_end());
case CSS::PropertyID::GridRowStart:

26
Userland/Libraries/LibWeb/CSS/StyleComputer.cpp
View file

@ -517,6 +517,32 @@ static void set_property_expanding_shorthands(StyleProperties& style, CSS::Prope
return;
}
if (property_id == CSS::PropertyID::GridColumn) {
if (value.is_grid_track_placement_shorthand()) {
auto const& shorthand = value.as_grid_track_placement_shorthand();
style.set_property(CSS::PropertyID::GridColumnStart, shorthand.start());
style.set_property(CSS::PropertyID::GridColumnEnd, shorthand.end());
return;
}
style.set_property(CSS::PropertyID::GridColumnStart, value);
style.set_property(CSS::PropertyID::GridColumnEnd, value);
return;
}
if (property_id == CSS::PropertyID::GridRow) {
if (value.is_grid_track_placement_shorthand()) {
auto const& shorthand = value.as_grid_track_placement_shorthand();
style.set_property(CSS::PropertyID::GridRowStart, shorthand.start());
style.set_property(CSS::PropertyID::GridRowEnd, shorthand.end());
return;
}
style.set_property(CSS::PropertyID::GridRowStart, value);
style.set_property(CSS::PropertyID::GridRowEnd, value);
return;
}
style.set_property(property_id, value);
}