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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 {
// <border-image-slice-value> = <number [0,∞]> | <percentage [0,∞]>
struct BorderImageSliceValue {
using Number = Style::Number<CSS::Nonnegative, float>;
using Percentage = Style::Percentage<CSS::Nonnegative, float>;
constexpr BorderImageSliceValue(Number number)
: m_value { number }
{
}
constexpr BorderImageSliceValue(CSS::ValueLiteral<CSS::NumberUnit::Number> literal)
: m_value { Number { literal } }
{
}
constexpr BorderImageSliceValue(Percentage percentage)
: m_value { percentage }
{
}
constexpr BorderImageSliceValue(CSS::ValueLiteral<CSS::PercentageUnit::Percentage> literal)
: m_value { Percentage { literal } }
{
}
constexpr bool isNumber() const { return WTF::holdsAlternative<Number>(m_value); }
constexpr bool isPercentage() const { return WTF::holdsAlternative<Percentage>(m_value); }
template<typename... F> constexpr decltype(auto) switchOn(F&&... f) const
{
return WTF::switchOn(m_value, std::forward<F>(f)...);
}
constexpr bool operator==(const BorderImageSliceValue&) const = default;
constexpr bool hasSameType(const BorderImageSliceValue& other) const { return m_value.index() == other.m_value.index(); }
private:
friend struct Blending<BorderImageSliceValue>;
Variant<Number, Percentage> m_value { Percentage { 100 } };
};
// <'border-image-slice'> = [<number [0,∞]> | <percentage [0,∞]>]{1,4} && fill?
// https://drafts.csswg.org/css-backgrounds/#propdef-border-image-slice
struct BorderImageSlice {
using Value = BorderImageSliceValue;
using Edges = MinimallySerializingSpaceSeparatedRectEdges<Value>;
Edges values { Value::Percentage { 100 } };
std::optional<CSS::Keyword::Fill> fill { };
BorderImageSlice(Edges values, std::optional<CSS::Keyword::Fill> fill = { })
: values { WTFMove(values) }
, fill { fill }
{
}
BorderImageSlice(Value top, Value right, Value bottom, Value left, std::optional<CSS::Keyword::Fill> fill = { })
: values { top, right, bottom, left }
, fill { fill }
{
}
BorderImageSlice(Value value, std::optional<CSS::Keyword::Fill> fill = { })
: values { value }
, fill { fill }
{
}
BorderImageSlice(Value::Number number, std::optional<CSS::Keyword::Fill> fill = { })
: values { number }
, fill { fill }
{
}
BorderImageSlice(CSS::ValueLiteral<CSS::NumberUnit::Number> literal, std::optional<CSS::Keyword::Fill> fill = { })
: values { Value::Number { literal } }
, fill { fill }
{
}
BorderImageSlice(Value::Percentage percentage, std::optional<CSS::Keyword::Fill> fill = { })
: values { percentage }
, fill { fill }
{
}
BorderImageSlice(CSS::ValueLiteral<CSS::PercentageUnit::Percentage> literal, std::optional<CSS::Keyword::Fill> fill = { })
: values { Value::Percentage { literal } }
, fill { fill }
{
}
bool operator==(const BorderImageSlice&) const = default;
};
template<size_t I> const auto& get(const BorderImageSlice& value)
{
if constexpr (!I)
return value.values;
else if constexpr (I == 1)
return value.fill;
}
// MARK: - Conversion
template<> struct CSSValueConversion<BorderImageSlice> { auto operator()(BuilderState&, const CSSValue&) -> BorderImageSlice; };
template<> struct CSSValueCreation<BorderImageSlice> { auto operator()(CSSValuePool&, const RenderStyle&, const BorderImageSlice&) -> Ref<CSSValue>; };
// MARK: - Blending
template<> struct Blending<BorderImageSliceValue> {
auto canBlend(const BorderImageSliceValue&, const BorderImageSliceValue&) -> bool;
auto requiresInterpolationForAccumulativeIteration(const BorderImageSliceValue&, const BorderImageSliceValue&) -> bool;
auto blend(const BorderImageSliceValue&, const BorderImageSliceValue&, const BlendingContext&) -> BorderImageSliceValue;
};
template<> struct Blending<BorderImageSlice> {
auto canBlend(const BorderImageSlice&, const BorderImageSlice&) -> bool;
auto requiresInterpolationForAccumulativeIteration(const BorderImageSlice&, const BorderImageSlice&) -> bool;
auto blend(const BorderImageSlice&, const BorderImageSlice&, const BlendingContext&) -> BorderImageSlice;
};
} // namespace Style
} // namespace WebCore
DEFINE_SPACE_SEPARATED_TUPLE_LIKE_CONFORMANCE(WebCore::Style::BorderImageSlice, 2)
DEFINE_VARIANT_LIKE_CONFORMANCE(WebCore::Style::BorderImageSliceValue)
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