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LibWeb: Parse the rotate css property

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stelar7 2024-10-16 08:50:35 +02:00 • committed by Sam Atkins
commit 488436fb54
Notes: github-actions[bot] 2024-10-29 14:41:49 +00:00
17 changed files with 284 additions and 0 deletions
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38
Userland/Libraries/LibWeb/CSS/StyleProperties.cpp
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@ -27,6 +27,7 @@
#include <LibWeb/CSS/StyleValues/PercentageStyleValue.h>
#include <LibWeb/CSS/StyleValues/PositionStyleValue.h>
#include <LibWeb/CSS/StyleValues/RectStyleValue.h>
#include <LibWeb/CSS/StyleValues/RotationStyleValue.h>
#include <LibWeb/CSS/StyleValues/ScrollbarGutterStyleValue.h>
#include <LibWeb/CSS/StyleValues/ShadowStyleValue.h>
#include <LibWeb/CSS/StyleValues/StringStyleValue.h>
@ -521,6 +522,43 @@ Vector<CSS::Transformation> StyleProperties::transformations() const
return transformations_for_style_value(property(CSS::PropertyID::Transform));
}
Optional<CSS::Transformation> StyleProperties::rotate(Layout::Node const& layout_node) const
{
auto value = property(CSS::PropertyID::Rotate);
if (!value->is_rotation())
return {};
auto& rotation = value->as_rotation();
auto resolve_angle = [&layout_node](CSSStyleValue const& value) -> Optional<Angle> {
if (value.is_angle())
return value.as_angle().angle();
if (value.is_math() && value.as_math().resolves_to_angle())
return value.as_math().resolve_angle(layout_node);
return {};
};
auto resolve_number = [&](CSSStyleValue const& value) -> Optional<double> {
if (value.is_number())
return value.as_number().number();
if (value.is_math() && value.as_math().resolves_to_number())
return value.as_math().resolve_number();
return {};
};
auto x = resolve_number(rotation.rotation_x()).value_or(0);
auto y = resolve_number(rotation.rotation_y()).value_or(0);
auto z = resolve_number(rotation.rotation_z()).value_or(0);
auto angle = resolve_angle(rotation.angle()).value_or(Angle::make_degrees(0));
Vector<TransformValue> values;
values.append({ Number(Number::Type::Number, x) });
values.append({ Number(Number::Type::Number, y) });
values.append({ Number(Number::Type::Number, z) });
values.append({ angle });
return CSS::Transformation(CSS::TransformFunction::Rotate3d, move(values));
}
static Optional<LengthPercentage> length_percentage_for_style_value(CSSStyleValue const& value)
{
if (value.is_length())