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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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38
Userland/Libraries/LibWeb/CSS/StyleProperties.cpp
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@ -424,6 +424,44 @@ Optional<CSS::JustifyContent> StyleProperties::justify_content() const
}
}
Vector<CSS::Transformation> StyleProperties::transformations() const
{
auto value = property(CSS::PropertyID::Transform);
if (!value.has_value())
return {};
if (value.value()->is_identifier() && value.value()->to_identifier() == CSS::ValueID::None)
return {};
if (!value.value()->is_value_list())
return {};
auto& list = static_cast<const StyleValueList&>(*value.value());
Vector<CSS::Transformation> transformations;
for (auto& it : list.values()) {
if (!it.is_transformation())
return {};
auto& transformation_style_value = static_cast<TransformationStyleValue const&>(it);
CSS::Transformation transformation;
transformation.function = transformation_style_value.transform_function();
Vector<Variant<CSS::Length, float>> values;
for (auto& transformation_value : transformation_style_value.values()) {
if (transformation_value.is_length()) {
values.append({ transformation_value.to_length() });
} else if (transformation_value.is_numeric()) {
values.append({ static_cast<NumericStyleValue const&>(transformation_value).value() });
} else {
dbgln("FIXME: Unsupported value in transform!");
}
}
transformation.values = move(values);
transformations.append(move(transformation));
}
return transformations;
}
Optional<CSS::AlignItems> StyleProperties::align_items() const
{
auto value = property(CSS::PropertyID::AlignItems);