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/*
* Copyright (C) 2024 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.
*/
#include "config.h"
#include "StyleEasingFunction.h"
#include "CSSEasingFunction.h"
#include "CSSEasingFunctionValue.h"
#include "CSSPrimitiveValue.h"
#include "StyleCubicBezierEasingFunction.h"
#include "StyleLinearEasingFunction.h"
#include "StyleSpringEasingFunction.h"
#include "StyleStepsEasingFunction.h"
#include "TimingFunction.h"
namespace WebCore {
namespace Style {
CSS::EasingFunction toCSSEasingFunction(const TimingFunction& function, const RenderStyle& style)
{
switch (function.type()) {
case TimingFunction::Type::CubicBezierFunction: {
auto& cubicBezierFunction = downcast<CubicBezierTimingFunction>(function);
switch (cubicBezierFunction.timingFunctionPreset()) {
case CubicBezierTimingFunction::TimingFunctionPreset::Ease:
return { CSS::Keyword::Ease { } };
case CubicBezierTimingFunction::TimingFunctionPreset::EaseIn:
return { CSS::Keyword::EaseIn { } };
case CubicBezierTimingFunction::TimingFunctionPreset::EaseOut:
return { CSS::Keyword::EaseOut { } };
case CubicBezierTimingFunction::TimingFunctionPreset::EaseInOut:
return { CSS::Keyword::EaseInOut { } };
case CubicBezierTimingFunction::TimingFunctionPreset::Custom:
break;
}
return { toCSSCubicBezierEasingFunction(cubicBezierFunction, style) };
}
case TimingFunction::Type::LinearFunction: {
auto& linearFunction = uncheckedDowncast<LinearTimingFunction>(function);
if (linearFunction.points().isEmpty())
return { CSS::Keyword::Linear { } };
return { toCSSLinearEasingFunction(linearFunction, style) };
}
case TimingFunction::Type::StepsFunction:
return { toCSSStepsEasingFunction(downcast<StepsTimingFunction>(function), style) };
case TimingFunction::Type::SpringFunction:
return { toCSSSpringEasingFunction(downcast<SpringTimingFunction>(function), style) };
}
RELEASE_ASSERT_NOT_REACHED();
}
Ref<TimingFunction> createTimingFunction(const CSS::EasingFunction& function, const CSSToLengthConversionData& conversionData)
{
return WTF::switchOn(function.value,
[&](const CSS::Keyword::Linear&) -> Ref<TimingFunction> {
return LinearTimingFunction::create();
},
[&](const CSS::LinearEasingFunction& function) -> Ref<TimingFunction> {
return createTimingFunction(function, conversionData);
},
[&](const CSS::Keyword::Ease&) -> Ref<TimingFunction> {
return CubicBezierTimingFunction::create();
},
[&](const CSS::Keyword::EaseIn&) -> Ref<TimingFunction> {
return CubicBezierTimingFunction::create(CubicBezierTimingFunction::TimingFunctionPreset::EaseIn);
},
[&](const CSS::Keyword::EaseOut&) -> Ref<TimingFunction> {
return CubicBezierTimingFunction::create(CubicBezierTimingFunction::TimingFunctionPreset::EaseOut);
},
[&](const CSS::Keyword::EaseInOut&) -> Ref<TimingFunction> {
return CubicBezierTimingFunction::create(CubicBezierTimingFunction::TimingFunctionPreset::EaseInOut);
},
[&](const CSS::CubicBezierEasingFunction& function) -> Ref<TimingFunction> {
return createTimingFunction(function, conversionData);
},
[&](const CSS::Keyword::StepStart&) -> Ref<TimingFunction> {
return StepsTimingFunction::create(1, StepsTimingFunction::StepPosition::Start);
},
[&](const CSS::Keyword::StepEnd&) -> Ref<TimingFunction> {
return StepsTimingFunction::create(1, StepsTimingFunction::StepPosition::End);
},
[&](const CSS::StepsEasingFunction& function) -> Ref<TimingFunction> {
return createTimingFunction(function, conversionData);
},
[&](const CSS::SpringEasingFunction& function) -> Ref<TimingFunction> {
return createTimingFunction(function, conversionData);
}
);
}
Ref<TimingFunction> createTimingFunctionDeprecated(const CSS::EasingFunction& function)
{
return WTF::switchOn(function.value,
[&](const CSS::Keyword::Linear&) -> Ref<TimingFunction> {
return LinearTimingFunction::create();
},
[&](const CSS::LinearEasingFunction& function) -> Ref<TimingFunction> {
return createTimingFunctionDeprecated(function);
},
[&](const CSS::Keyword::Ease&) -> Ref<TimingFunction> {
return CubicBezierTimingFunction::create();
},
[&](const CSS::Keyword::EaseIn&) -> Ref<TimingFunction> {
return CubicBezierTimingFunction::create(CubicBezierTimingFunction::TimingFunctionPreset::EaseIn);
},
[&](const CSS::Keyword::EaseOut&) -> Ref<TimingFunction> {
return CubicBezierTimingFunction::create(CubicBezierTimingFunction::TimingFunctionPreset::EaseOut);
},
[&](const CSS::Keyword::EaseInOut&) -> Ref<TimingFunction> {
return CubicBezierTimingFunction::create(CubicBezierTimingFunction::TimingFunctionPreset::EaseInOut);
},
[&](const CSS::CubicBezierEasingFunction& function) -> Ref<TimingFunction> {
return createTimingFunctionDeprecated(function);
},
[&](const CSS::Keyword::StepStart&) -> Ref<TimingFunction> {
return StepsTimingFunction::create(1, StepsTimingFunction::StepPosition::Start);
},
[&](const CSS::Keyword::StepEnd&) -> Ref<TimingFunction> {
return StepsTimingFunction::create(1, StepsTimingFunction::StepPosition::End);
},
[&](const CSS::StepsEasingFunction& function) -> Ref<TimingFunction> {
return createTimingFunctionDeprecated(function);
},
[&](const CSS::SpringEasingFunction& function) -> Ref<TimingFunction> {
return createTimingFunctionDeprecated(function);
}
);
}
static RefPtr<TimingFunction> createTimingFunctionFromValueID(CSSValueID valueID)
{
switch (valueID) {
case CSSValueLinear:
return LinearTimingFunction::create();
case CSSValueEase:
return CubicBezierTimingFunction::create();
case CSSValueEaseIn:
return CubicBezierTimingFunction::create(CubicBezierTimingFunction::TimingFunctionPreset::EaseIn);
case CSSValueEaseOut:
return CubicBezierTimingFunction::create(CubicBezierTimingFunction::TimingFunctionPreset::EaseOut);
case CSSValueEaseInOut:
return CubicBezierTimingFunction::create(CubicBezierTimingFunction::TimingFunctionPreset::EaseInOut);
case CSSValueStepStart:
return StepsTimingFunction::create(1, StepsTimingFunction::StepPosition::Start);
case CSSValueStepEnd:
return StepsTimingFunction::create(1, StepsTimingFunction::StepPosition::End);
default:
return { };
}
}
RefPtr<TimingFunction> createTimingFunction(const CSSValue& value, const CSSToLengthConversionData& conversionData)
{
if (RefPtr primitiveValue = dynamicDowncast<CSSPrimitiveValue>(value))
return createTimingFunctionFromValueID(primitiveValue->valueID());
if (RefPtr easingFunctionValue = dynamicDowncast<CSSEasingFunctionValue>(value))
return createTimingFunction(easingFunctionValue->easingFunction(), conversionData);
return { };
}
RefPtr<TimingFunction> createTimingFunctionDeprecated(const CSSValue& value)
{
if (RefPtr primitiveValue = dynamicDowncast<CSSPrimitiveValue>(value))
return createTimingFunctionFromValueID(primitiveValue->valueID());
if (auto easingFunctionValue = dynamicDowncast<CSSEasingFunctionValue>(value))
return createTimingFunctionDeprecated(easingFunctionValue->easingFunction());
return { };
}
} // namespace Style
} // namespace WebCore
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