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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/StylePrimitiveNumeric.h>
namespace WebCore {
namespace Style {
// <mask-border-slice-value> = <number [0,∞]> | <percentage [0,∞]>
struct MaskBorderSliceValue {
using Number = Style::Number<CSS::Nonnegative, float>;
using Percentage = Style::Percentage<CSS::Nonnegative, float>;
MaskBorderSliceValue(Number number)
: m_value { number }
{
}
MaskBorderSliceValue(Percentage percentage)
: m_value { percentage }
{
}
bool isNumber() const { return WTF::holdsAlternative<Number>(m_value); }
bool isPercentage() const { return WTF::holdsAlternative<Percentage>(m_value); }
template<typename... F> decltype(auto) switchOn(F&&... f) const
{
return WTF::switchOn(m_value, std::forward<F>(f)...);
}
bool operator==(const MaskBorderSliceValue&) const = default;
bool hasSameType(const MaskBorderSliceValue& other) const { return m_value.index() == other.m_value.index(); }
private:
friend struct Blending<MaskBorderSliceValue>;
Variant<Number, Percentage> m_value { Number { 0 } };
};
// <'mask-border-slice'> = [<number [0,∞]> | <percentage [0,∞]>]{1,4} && fill?
// https://drafts.fxtf.org/css-masking-1/#propdef-mask-border-slice
struct MaskBorderSlice {
MinimallySerializingSpaceSeparatedRectEdges<MaskBorderSliceValue> values { MaskBorderSliceValue::Number { 0 } };
std::optional<CSS::Keyword::Fill> fill { };
bool operator==(const MaskBorderSlice&) const = default;
};
template<size_t I> const auto& get(const MaskBorderSlice& value)
{
if constexpr (!I)
return value.values;
else if constexpr (I == 1)
return value.fill;
}
// MARK: - Conversion
template<> struct CSSValueConversion<MaskBorderSlice> { auto operator()(BuilderState&, const CSSValue&) -> MaskBorderSlice; };
template<> struct CSSValueCreation<MaskBorderSlice> { auto operator()(CSSValuePool&, const RenderStyle&, const MaskBorderSlice&) -> Ref<CSSValue>; };
// MARK: - Blending
template<> struct Blending<MaskBorderSliceValue> {
auto canBlend(const MaskBorderSliceValue&, const MaskBorderSliceValue&) -> bool;
auto requiresInterpolationForAccumulativeIteration(const MaskBorderSliceValue&, const MaskBorderSliceValue&) -> bool;
auto blend(const MaskBorderSliceValue&, const MaskBorderSliceValue&, const BlendingContext&) -> MaskBorderSliceValue;
};
template<> struct Blending<MaskBorderSlice> {
auto canBlend(const MaskBorderSlice&, const MaskBorderSlice&) -> bool;
auto requiresInterpolationForAccumulativeIteration(const MaskBorderSlice&, const MaskBorderSlice&) -> bool;
auto blend(const MaskBorderSlice&, const MaskBorderSlice&, const BlendingContext&) -> MaskBorderSlice;
};
} // namespace Style
} // namespace WebCore
DEFINE_SPACE_SEPARATED_TUPLE_LIKE_CONFORMANCE(WebCore::Style::MaskBorderSlice, 2)
DEFINE_VARIANT_LIKE_CONFORMANCE(WebCore::Style::MaskBorderSliceValue)
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