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LibWeb: Implement CSS mod()

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stelar7 2023-05-27 19:03:07 +02:00 • committed by Sam Atkins
parent b2230c826b
commit dc042662d1
4 changed files with 128 additions and 0 deletions
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65
Userland/Libraries/LibWeb/CSS/StyleValues/CalculatedStyleValue.cpp
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@ -1631,6 +1631,71 @@ ErrorOr<void> RoundCalculationNode::dump(StringBuilder& builder, int indent) con
return {};
}
ErrorOr<NonnullOwnPtr<ModCalculationNode>> ModCalculationNode::create(NonnullOwnPtr<CalculationNode> x, NonnullOwnPtr<CalculationNode> y)
{
return adopt_nonnull_own_or_enomem(new (nothrow) ModCalculationNode(move(x), move(y)));
}
ModCalculationNode::ModCalculationNode(NonnullOwnPtr<CalculationNode> x, NonnullOwnPtr<CalculationNode> y)
: CalculationNode(Type::Mod)
, m_x(move(x))
, m_y(move(y))
{
}
ModCalculationNode::~ModCalculationNode() = default;
ErrorOr<String> ModCalculationNode::to_string() const
{
StringBuilder builder;
builder.append("mod("sv);
builder.append(TRY(m_x->to_string()));
builder.append(", "sv);
builder.append(TRY(m_y->to_string()));
builder.append(")"sv);
return builder.to_string();
}
Optional<CalculatedStyleValue::ResolvedType> ModCalculationNode::resolved_type() const
{
// Note: We check during parsing that all values have the same type
return m_x->resolved_type();
}
bool ModCalculationNode::contains_percentage() const
{
return m_x->contains_percentage() || m_y->contains_percentage();
}
CalculatedStyleValue::CalculationResult ModCalculationNode::resolve(Optional<Length::ResolutionContext const&> context, CalculatedStyleValue::PercentageBasis const& percentage_basis) const
{
auto resolved_type = m_x->resolved_type().value();
auto node_a = m_x->resolve(context, percentage_basis);
auto node_b = m_y->resolve(context, percentage_basis);
auto node_a_value = resolve_value(node_a.value(), context);
auto node_b_value = resolve_value(node_b.value(), context);
auto quotient = floor(node_a_value / node_b_value);
auto value = node_a_value - (node_b_value * quotient);
return to_resolved_type(resolved_type, value);
}
ErrorOr<void> ModCalculationNode::for_each_child_node(Function<ErrorOr<void>(NonnullOwnPtr<CalculationNode>&)> const& callback)
{
TRY(m_x->for_each_child_node(callback));
TRY(m_y->for_each_child_node(callback));
TRY(callback(m_x));
TRY(callback(m_y));
return {};
}
ErrorOr<void> ModCalculationNode::dump(StringBuilder& builder, int indent) const
{
TRY(builder.try_appendff("{: >{}}MOD: {}\n", "", indent, TRY(to_string())));
return {};
}
void CalculatedStyleValue::CalculationResult::add(CalculationResult const& other, Optional<Length::ResolutionContext const&> context, PercentageBasis const& percentage_basis)
{
add_or_subtract_internal(SumOperation::Add, other, context, percentage_basis);