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/*
* Copyright (C) 2021 Apple Inc. All rights reserved.
* 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. AND ITS CONTRIBUTORS ``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 ITS 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.
*/
#include "config.h"
#include "StyleOffsetRotate.h"
#include "CSSOffsetRotateValue.h"
#include "StyleBuilderState.h"
#include "StylePrimitiveKeyword+Logging.h"
#include "StylePrimitiveNumericTypes+Blending.h"
#include "StylePrimitiveNumericTypes+Logging.h"
#include <wtf/text/TextStream.h>
namespace WebCore {
namespace Style {
using namespace CSS::Literals;
// MARK: - Conversion
auto CSSValueConversion<OffsetRotate>::operator()(BuilderState& state, const CSSValue& value) -> OffsetRotate
{
RefPtr<const CSSPrimitiveValue> modifierValue;
RefPtr<const CSSPrimitiveValue> angleValue;
if (auto* offsetRotateValue = dynamicDowncast<CSSOffsetRotateValue>(value)) {
modifierValue = offsetRotateValue->modifier();
angleValue = offsetRotateValue->angle();
} else if (auto* primitiveValue = dynamicDowncast<CSSPrimitiveValue>(value)) {
// Values coming from CSSTypedOM didn't go through the parser and may not have been converted to a CSSOffsetRotateValue.
if (primitiveValue->valueID() == CSSValueAuto || primitiveValue->valueID() == CSSValueReverse)
modifierValue = primitiveValue;
else if (primitiveValue->isAngle())
angleValue = primitiveValue;
}
std::optional<CSS::Keyword::Auto> autoKeyword;
auto angleInDegrees = 0.0f;
if (angleValue)
angleInDegrees = angleValue->resolveAsAngle<float>(state.cssToLengthConversionData());
if (modifierValue) {
switch (modifierValue->valueID()) {
case CSSValueAuto:
autoKeyword = CSS::Keyword::Auto { };
break;
case CSSValueReverse:
autoKeyword = CSS::Keyword::Auto { };
angleInDegrees += 180.0f;
break;
default:
ASSERT_NOT_REACHED();
}
}
return OffsetRotate { autoKeyword, OffsetRotate::Angle { angleInDegrees } };
}
// MARK: - Blending
bool Blending<OffsetRotate>::canBlend(const OffsetRotate& from, const OffsetRotate& to)
{
return from.hasAuto() == to.hasAuto();
}
auto Blending<OffsetRotate>::blend(const OffsetRotate& from, const OffsetRotate& to, const BlendingContext& context) -> OffsetRotate
{
if (context.isDiscrete) {
ASSERT(!context.progress || context.progress == 1.0);
return context.progress ? to : from;
}
ASSERT(canBlend(from, to));
return OffsetRotate { from.autoKeyword(), WebCore::Style::blend(from.angle(), to.angle(), context) };
}
// MARK: - Evaluation
#if ENABLE(THREADED_ANIMATION_RESOLUTION)
auto Evaluation<OffsetRotate, AcceleratedEffectOffsetRotate>::operator()(const OffsetRotate& value) -> AcceleratedEffectOffsetRotate
{
return { .hasAuto = value.hasAuto(), .angle = value.angle().value };
}
#endif
// MARK: - Logging
WTF::TextStream& operator<<(WTF::TextStream& ts, const OffsetRotate& rotate)
{
ts.dumpProperty("angle"_s, rotate.angle());
ts.dumpProperty("hasAuto"_s, rotate.hasAuto());
return ts;
}
} // namespace Style
} // namespace WebCore
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