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/*
* Copyright (c) 2022-2023, Sam Atkins <atkinssj@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "Angle.h"
#include <AK/Math.h>
#include <LibWeb/CSS/Percentage.h>
namespace Web::CSS {
Angle::Angle(int value, Type type)
: m_type(type)
, m_value(value)
{
}
Angle::Angle(double value, Type type)
: m_type(type)
, m_value(value)
{
}
Angle Angle::make_degrees(double value)
{
return { value, Type::Deg };
}
Angle Angle::percentage_of(Percentage const& percentage) const
{
return Angle { percentage.as_fraction() * m_value, m_type };
}
ErrorOr<String> Angle::to_string() const
{
return String::formatted("{}deg", to_degrees());
}
double Angle::to_degrees() const
{
switch (m_type) {
case Type::Deg:
return m_value;
case Type::Grad:
return m_value * (360.0 / 400.0);
case Type::Rad:
return m_value * (180.0 / AK::Pi<double>);
case Type::Turn:
return m_value * 360.0;
}
VERIFY_NOT_REACHED();
}
StringView Angle::unit_name() const
{
switch (m_type) {
case Type::Deg:
return "deg"sv;
case Type::Grad:
return "grad"sv;
case Type::Rad:
return "rad"sv;
case Type::Turn:
return "turn"sv;
}
VERIFY_NOT_REACHED();
}
Optional<Angle::Type> Angle::unit_from_name(StringView name)
{
if (name.equals_ignoring_ascii_case("deg"sv)) {
return Type::Deg;
}
if (name.equals_ignoring_ascii_case("grad"sv)) {
return Type::Grad;
}
if (name.equals_ignoring_ascii_case("rad"sv)) {
return Type::Rad;
}
if (name.equals_ignoring_ascii_case("turn"sv)) {
return Type::Turn;
}
return {};
}
}
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