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/*
* Copyright (C) 2025 Samuel Weinig <sam@webkit.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <WebCore/StylePrimitiveNumericTypes.h>
namespace WebCore {
namespace Style {
// <mask-border-outset-value> = <length [0,∞]> | <number [0,∞]>
struct MaskBorderOutsetValue {
using Length = Style::Length<CSS::Nonnegative, float>;
using Number = Style::Number<CSS::Nonnegative, float>;
constexpr MaskBorderOutsetValue(Length length)
: m_value { length }
{
}
constexpr MaskBorderOutsetValue(CSS::ValueLiteral<CSS::LengthUnit::Px> literal)
: m_value { Length { literal } }
{
}
constexpr MaskBorderOutsetValue(Number number)
: m_value { number }
{
}
constexpr MaskBorderOutsetValue(CSS::ValueLiteral<CSS::NumberUnit::Number> literal)
: m_value { Number { literal } }
{
}
constexpr bool isLength() const { return WTF::holdsAlternative<Length>(m_value); }
constexpr bool isNumber() const { return WTF::holdsAlternative<Number>(m_value); }
template<typename... F> constexpr decltype(auto) switchOn(F&&... f) const
{
return WTF::switchOn(m_value, std::forward<F>(f)...);
}
constexpr bool isZero() const
{
return switchOn([&](auto& value) { return value == 0; });
}
constexpr bool operator==(const MaskBorderOutsetValue&) const = default;
constexpr bool hasSameType(const MaskBorderOutsetValue& other) const { return m_value.index() == other.m_value.index(); }
private:
friend struct Blending<MaskBorderOutsetValue>;
Variant<Length, Number> m_value { Number { 0 } };
};
// <'mask-border-outset'> = [ <length [0,∞]> | <number [0,∞]> ]{1,4}
// https://drafts.fxtf.org/css-masking-1/#propdef-mask-border-outset
struct MaskBorderOutset {
using Value = MaskBorderOutsetValue;
using Edges = MinimallySerializingSpaceSeparatedRectEdges<Value>;
Edges values { Value { Value::Number { 0 } } };
MaskBorderOutset(Edges values)
: values { WTF::move(values) }
{
}
MaskBorderOutset(Value top, Value right, Value bottom, Value left)
: values { top, right, bottom, left }
{
}
MaskBorderOutset(Value value)
: values { WTF::move(value) }
{
}
MaskBorderOutset(Value::Length length)
: values { length }
{
}
MaskBorderOutset(CSS::ValueLiteral<CSS::LengthUnit::Px> literal)
: values { Value::Length { literal } }
{
}
MaskBorderOutset(Value::Number number)
: values { number }
{
}
MaskBorderOutset(CSS::ValueLiteral<CSS::NumberUnit::Number> literal)
: values { Value::Number { literal } }
{
}
bool isZero() const
{
return values.allOf([](auto& edge) { return edge.isZero(); });
}
bool operator==(const MaskBorderOutset&) const = default;
};
DEFINE_TYPE_WRAPPER_GET(MaskBorderOutset, values);
// MARK: - Conversion
template<> struct CSSValueConversion<MaskBorderOutset> { auto operator()(BuilderState&, const CSSValue&) -> MaskBorderOutset; };
template<> struct CSSValueCreation<MaskBorderOutset> { auto operator()(CSSValuePool&, const RenderStyle&, const MaskBorderOutset&) -> Ref<CSSValue>; };
// MARK: - Blending
template<> struct Blending<MaskBorderOutsetValue> {
auto canBlend(const MaskBorderOutsetValue&, const MaskBorderOutsetValue&) -> bool;
auto requiresInterpolationForAccumulativeIteration(const MaskBorderOutsetValue&, const MaskBorderOutsetValue&) -> bool;
auto blend(const MaskBorderOutsetValue&, const MaskBorderOutsetValue&, const BlendingContext&) -> MaskBorderOutsetValue;
};
template<> struct Blending<MaskBorderOutset> {
auto canBlend(const MaskBorderOutset&, const MaskBorderOutset&) -> bool;
auto requiresInterpolationForAccumulativeIteration(const MaskBorderOutset&, const MaskBorderOutset&) -> bool;
auto blend(const MaskBorderOutset&, const MaskBorderOutset&, const BlendingContext&) -> MaskBorderOutset;
};
} // namespace Style
} // namespace WebCore
DEFINE_TUPLE_LIKE_CONFORMANCE_FOR_TYPE_WRAPPER(WebCore::Style::MaskBorderOutset)
DEFINE_VARIANT_LIKE_CONFORMANCE(WebCore::Style::MaskBorderOutsetValue)
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