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/*
* Copyright (C) 2013 Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER 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.
*/
#ifndef AnimationEffect_h
#define AnimationEffect_h
#include "CSSPropertyNames.h"
#include "wtf/HashMap.h"
#include "wtf/PassOwnPtr.h"
#include "wtf/RefCounted.h"
namespace WebCore {
class AnimatableValue;
class AnimationEffect : public RefCounted<AnimationEffect> {
public:
enum CompositeOperation {
CompositeReplace,
CompositeAdd,
};
// Encapsulates the value which results from applying a set of composition operations onto an
// underlying value. It is used to represent the output of the effect phase of the Web
// Animations model.
class CompositableValue : public RefCounted<CompositableValue> {
public:
virtual ~CompositableValue() { }
virtual bool dependsOnUnderlyingValue() const = 0;
virtual PassRefPtr<AnimatableValue> compositeOnto(const AnimatableValue*) const = 0;
};
virtual ~AnimationEffect() { }
typedef HashMap<CSSPropertyID, RefPtr<CompositableValue> > CompositableValueMap;
typedef Vector<std::pair<CSSPropertyID, RefPtr<CompositableValue> > > CompositableValueList;
virtual PassOwnPtr<CompositableValueList> sample(int iteration, double fraction) const = 0;
virtual bool affects(CSSPropertyID) { return false; };
virtual bool isKeyframeAnimationEffect() const { return false; }
};
} // namespace WebCore
#endif // AnimationEffect_h
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