ladybird/Userland/Libraries/LibWeb/CSS/Angle.h
Sam Atkins 7b4004d682 LibWeb: Ensure PercentageOr<T>::resolved() returns a concrete T
Which is to say, a T where `is_calculated()` is false.

As is becoming a repeating theme with CSS types, we have two states for
a FooPercentage that is a `calc()` expression: Either the FooPercentage
holds the CalculatedStyleValue directly, or it holds a Foo which itself
holds the CalculatedStyleValue. The first case was already handled to
return Foo, and with this patch, the second is too. :^)
2022-07-27 17:03:55 +02:00

67 lines
1.5 KiB
C++

/*
* Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/RefPtr.h>
#include <AK/String.h>
#include <LibWeb/Forward.h>
namespace Web::CSS {
class Angle {
public:
enum class Type {
Calculated,
Deg,
Grad,
Rad,
Turn,
};
static Optional<Type> unit_from_name(StringView);
Angle(int value, Type type);
Angle(float value, Type type);
static Angle make_calculated(NonnullRefPtr<CalculatedStyleValue>);
static Angle make_degrees(float);
Angle percentage_of(Percentage const&) const;
bool is_calculated() const { return m_type == Type::Calculated; }
NonnullRefPtr<CalculatedStyleValue> calculated_style_value() const;
String to_string() const;
float to_degrees() const;
bool operator==(Angle const& other) const
{
if (is_calculated())
return m_calculated_style == other.m_calculated_style;
return m_type == other.m_type && m_value == other.m_value;
}
bool operator!=(Angle const& other) const
{
return !(*this == other);
}
private:
StringView unit_name() const;
Type m_type;
float m_value { 0 };
RefPtr<CalculatedStyleValue> m_calculated_style;
};
}
template<>
struct AK::Formatter<Web::CSS::Angle> : Formatter<StringView> {
ErrorOr<void> format(FormatBuilder& builder, Web::CSS::Angle const& angle)
{
return Formatter<StringView>::format(builder, angle.to_string());
}
};