ladybird/Libraries/LibWeb/CSS/Time.cpp
Sam Atkins 6b69b00a05 LibWeb/CSS: Use serialize_a_number() for Time serialization
As noted, the spec tells us to do something different than what is
expected by WPT, so we slightly ignore it.
2025-08-18 16:52:39 +01:00

101 lines
2.5 KiB
C++

/*
* Copyright (c) 2022-2025, Sam Atkins <sam@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/CSS/Percentage.h>
#include <LibWeb/CSS/StyleValues/CalculatedStyleValue.h>
#include <LibWeb/CSS/Time.h>
namespace Web::CSS {
Time::Time(double value, Type type)
: m_type(type)
, m_value(value)
{
}
Time Time::make_seconds(double value)
{
return { value, Type::S };
}
Time Time::percentage_of(Percentage const& percentage) const
{
return Time { percentage.as_fraction() * m_value, m_type };
}
String Time::to_string(SerializationMode serialization_mode) const
{
// https://drafts.csswg.org/cssom/#serialize-a-css-value
// -> <time>
// The time in seconds serialized as per <number> followed by the literal string "s".
// AD-HOC: WPT expects us to serialize using the actual unit, like for other dimensions.
// https://github.com/w3c/csswg-drafts/issues/12616
if (serialization_mode == SerializationMode::ResolvedValue) {
StringBuilder builder;
serialize_a_number(builder, to_seconds());
builder.append("s"sv);
return builder.to_string_without_validation();
}
StringBuilder builder;
serialize_a_number(builder, raw_value());
builder.append(unit_name());
return builder.to_string_without_validation();
}
double Time::to_seconds() const
{
switch (m_type) {
case Type::S:
return m_value;
case Type::Ms:
return m_value / 1000.0;
}
VERIFY_NOT_REACHED();
}
double Time::to_milliseconds() const
{
switch (m_type) {
case Type::S:
return m_value * 1000.0;
case Type::Ms:
return m_value;
}
VERIFY_NOT_REACHED();
}
StringView Time::unit_name() const
{
switch (m_type) {
case Type::S:
return "s"sv;
case Type::Ms:
return "ms"sv;
}
VERIFY_NOT_REACHED();
}
Optional<Time::Type> Time::unit_from_name(StringView name)
{
if (name.equals_ignoring_ascii_case("s"sv)) {
return Type::S;
} else if (name.equals_ignoring_ascii_case("ms"sv)) {
return Type::Ms;
}
return {};
}
Time Time::resolve_calculated(NonnullRefPtr<CalculatedStyleValue const> const& calculated, Layout::Node const& layout_node, Time const& reference_value)
{
return calculated->resolve_time_deprecated(
{
.percentage_basis = reference_value,
.length_resolution_context = Length::ResolutionContext::for_layout_node(layout_node),
})
.value();
}
}