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LibWeb: Implement CSS log()

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This commit is contained in:
stelar7
2023-05-28 11:53:57 +02:00
committed by Sam Atkins
parent fa37bb8b76
commit 6dde49404a
4 changed files with 130 additions and 0 deletions
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58
Userland/Libraries/LibWeb/CSS/StyleValues/CalculatedStyleValue.cpp
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@@ -1420,6 +1420,64 @@ ErrorOr<void> HypotCalculationNode::dump(StringBuilder& builder, int indent) con
return {};
}
ErrorOr<NonnullOwnPtr<LogCalculationNode>> LogCalculationNode::create(NonnullOwnPtr<CalculationNode> x, NonnullOwnPtr<CalculationNode> y)
{
return adopt_nonnull_own_or_enomem(new (nothrow) LogCalculationNode(move(x), move(y)));
}
LogCalculationNode::LogCalculationNode(NonnullOwnPtr<CalculationNode> x, NonnullOwnPtr<CalculationNode> y)
: CalculationNode(Type::Log)
, m_x(move(x))
, m_y(move(y))
{
}
LogCalculationNode::~LogCalculationNode() = default;
ErrorOr<String> LogCalculationNode::to_string() const
{
StringBuilder builder;
builder.append("log("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> LogCalculationNode::resolved_type() const
{
return CalculatedStyleValue::ResolvedType::Number;
}
CalculatedStyleValue::CalculationResult LogCalculationNode::resolve(Optional<Length::ResolutionContext const&> context, CalculatedStyleValue::PercentageBasis const& percentage_basis) const
{
auto node_a = m_x->resolve(context, percentage_basis);
auto node_a_value = resolve_value(node_a.value(), context);
auto node_b = m_y->resolve(context, percentage_basis);
auto node_b_value = resolve_value(node_b.value(), context);
auto result = log2(node_a_value) / log2(node_b_value);
return { Number(Number::Type::Number, result) };
}
ErrorOr<void> LogCalculationNode::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> LogCalculationNode::dump(StringBuilder& builder, int indent) const
{
TRY(builder.try_appendff("{: >{}}LOG: {}\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);