ladybird/Libraries/LibWeb/CSS/Time.cpp
Tim Ledbetter d0be5a0cdf LibWeb: Preserve unit when serializing time values
Previously, when serializing a time value, we would always convert it
to seconds. We now canonicalize the time value only when serializing
its computed value.
2025-03-20 16:59:27 +00:00

87 lines
1.8 KiB
C++

/*
* Copyright (c) 2022-2023, Sam Atkins <atkinssj@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "Time.h"
#include <LibWeb/CSS/Percentage.h>
#include <LibWeb/CSS/StyleValues/CalculatedStyleValue.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() const
{
return MUST(String::formatted("{}{}", raw_value(), unit_name()));
}
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& calculated, Layout::Node const& layout_node, Time const& reference_value)
{
return calculated->resolve_time(
{
.percentage_basis = reference_value,
.length_resolution_context = Length::ResolutionContext::for_layout_node(layout_node),
})
.value();
}
}