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LibWeb: Add transform property to the system

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This patch adds parsing support as well as all the needed stuctures all
over LibWeb to pass Transformations around.
This commit is contained in:
Tobias Christiansen 2021-09-18 17:20:00 +02:00 • committed by Andreas Kling
parent 74b88a8156
commit 9ebfafafbe
8 changed files with 133 additions and 0 deletions
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43
Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
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@ -2788,6 +2788,45 @@ RefPtr<StyleValue> Parser::parse_text_decoration_value(ParsingContext const& con
return TextDecorationStyleValue::create(decoration_line.release_nonnull(), decoration_style.release_nonnull(), decoration_color.release_nonnull());
}
static Optional<CSS::TransformFunction> parse_transform_function_name(StringView name)
{
if (name == "translateY")
return CSS::TransformFunction::TranslateY;
return {};
}
RefPtr<StyleValue> Parser::parse_transform_value(ParsingContext const& context, Vector<StyleComponentValueRule> const& component_values)
{
NonnullRefPtrVector<StyleValue> transformations;
for (auto& part : component_values) {
if (!part.is_function())
return nullptr;
auto maybe_function = parse_transform_function_name(part.function().name());
if (!maybe_function.has_value())
return nullptr;
NonnullRefPtrVector<StyleValue> values;
for (auto& value : part.function().values()) {
if (value.is(Token::Type::Dimension)) {
auto maybe_length = parse_length(context, value);
if (!maybe_length.has_value())
return nullptr;
values.append(LengthStyleValue::create(maybe_length.release_value()));
} else if (value.is(Token::Type::Number)) {
auto number = parse_numeric_value(context, value);
values.append(number.release_nonnull());
} else {
dbgln("FIXME: Unsupported value type for transformation!");
return nullptr;
}
}
transformations.append(TransformationStyleValue::create(maybe_function.value(), move(values)));
}
return StyleValueList::create(move(transformations));
}
RefPtr<StyleValue> Parser::parse_as_css_value(PropertyID property_id)
{
auto component_values = parse_as_list_of_component_values();
@ -2893,6 +2932,10 @@ Result<NonnullRefPtr<StyleValue>, Parser::ParsingResult> Parser::parse_css_value
if (auto parsed_value = parse_text_decoration_value(m_context, component_values))
return parsed_value.release_nonnull();
break;
case PropertyID::Transform:
if (auto parsed_value = parse_transform_value(m_context, component_values))
return parsed_value.release_nonnull();
break;
default:
break;
}