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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,
* 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/StyleTransformList.h>
#include <WebCore/StyleValueTypes.h>
namespace WebCore {
class TransformOperations;
namespace Style {
// <'transform'> = none | <transform-list>
// https://drafts.csswg.org/css-transforms-1/#propdef-transform
struct Transform : ListOrNone<TransformList> {
friend struct Blending<Transform>;
using ListOrNone<TransformList>::ListOrNone;
// Convenience constructors for creating a `transform` directly from transform functions.
Transform(std::initializer_list<TransformFunction>);
Transform(TransformFunction&&);
template<TransformFunctionType operationType>
bool hasTransformOfType() const;
void apply(TransformationMatrix&, const FloatSize&, unsigned start = 0) const;
// Return true if any of the operation types are 3D operation types (even if the
// values describe affine transforms)
bool has3DOperation() const;
bool isRepresentableIn2D() const;
bool affectedByTransformOrigin() const;
bool containsNonInvertibleMatrix(const LayoutSize&) const;
TransformFunctionSizeDependencies computeSizeDependencies() const;
};
inline Transform::Transform(std::initializer_list<TransformFunction> transformFunctions)
: Transform { TransformList { transformFunctions } }
{
}
inline Transform::Transform(TransformFunction&& transformFunction)
: Transform { TransformList { WTFMove(transformFunction) } }
{
}
template<TransformFunctionType operationType>
bool Transform::hasTransformOfType() const
{
return m_value.hasTransformOfType<operationType>();
}
inline void Transform::apply(TransformationMatrix& matrix, const FloatSize& size, unsigned start) const
{
m_value.apply(matrix, size, start);
}
inline bool Transform::has3DOperation() const
{
return m_value.has3DOperation();
}
inline bool Transform::isRepresentableIn2D() const
{
return m_value.isRepresentableIn2D();
}
inline bool Transform::affectedByTransformOrigin() const
{
return m_value.affectedByTransformOrigin();
}
inline bool Transform::containsNonInvertibleMatrix(const LayoutSize& size) const
{
return m_value.containsNonInvertibleMatrix(size);
}
inline TransformFunctionSizeDependencies Transform::computeSizeDependencies() const
{
return m_value.computeSizeDependencies();
}
// MARK: - Conversion
template<> struct CSSValueConversion<Transform> { auto operator()(BuilderState&, const CSSValue&) -> Transform; };
template<> struct CSSValueCreation<Transform> { auto operator()(CSSValuePool&, const RenderStyle&, const Transform&) -> Ref<CSSValue>; };
// MARK: - Blending
template<> struct Blending<Transform> {
auto canBlend(const Transform&, const Transform&, CompositeOperation) -> bool;
constexpr auto requiresInterpolationForAccumulativeIteration(const Transform&, const Transform&) -> bool { return true; }
auto blend(const Transform&, const Transform&, const Interpolation::Context&) -> Transform;
};
// MARK: - Platform
template<> struct ToPlatform<Transform> { auto operator()(const Transform&, const FloatSize&) -> TransformOperations; };
} // namespace Style
} // namespace WebCore
DEFINE_VARIANT_LIKE_CONFORMANCE(WebCore::Style::Transform)
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