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/*
* Copyright (C) 2009-2025 Apple Inc. All rights reserved.
*
* 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/TimingFunction.h>
#include <wtf/TZoneMalloc.h>
namespace WebCore {
// Base class for animation values (also used for transitions). Here to
// represent values for properties being animated via the GraphicsLayer,
// without pulling in style-related data from outside of the platform directory.
class GraphicsLayerAnimationValue {
WTF_MAKE_TZONE_ALLOCATED_EXPORT(GraphicsLayerAnimationValue, WEBCORE_EXPORT);
public:
virtual ~GraphicsLayerAnimationValue() = default;
double keyTime() const { return m_keyTime; }
const TimingFunction* timingFunction() const { return m_timingFunction.get(); }
virtual std::unique_ptr<GraphicsLayerAnimationValue> clone() const = 0;
virtual bool isGraphicsLayerFilterAnimationValue() const { return false; }
virtual bool isGraphicsLayerFloatAnimationValue() const { return false; }
virtual bool isGraphicsLayerTransformAnimationValue() const { return false; }
protected:
GraphicsLayerAnimationValue(double keyTime, TimingFunction* timingFunction = nullptr)
: m_keyTime(keyTime)
, m_timingFunction(timingFunction)
{
}
explicit GraphicsLayerAnimationValue(const GraphicsLayerAnimationValue& other)
: m_keyTime(other.m_keyTime)
, m_timingFunction(other.m_timingFunction ? RefPtr { other.m_timingFunction->clone() } : nullptr)
{
}
GraphicsLayerAnimationValue(GraphicsLayerAnimationValue&&) = default;
private:
void operator=(const GraphicsLayerAnimationValue&) = delete;
double m_keyTime;
const RefPtr<TimingFunction> m_timingFunction;
};
} // namespace WebCore
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