/*
* 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 CompositorAnimations_h
#define CompositorAnimations_h
#include "core/animation/AnimationEffect.h"
#include "core/animation/Timing.h"
#include "platform/animation/TimingFunction.h"
#include "wtf/Vector.h"
namespace WebCore {
class Element;
// Given an input timing function between keyframe at 0 and keyframe at 1.0, we
// need a timing function such that the behavior with the keyframes swapped is
// equivalent to reversing time with the input timing function and keyframes.
// This means flipping the timing function about x=0.5 and about y=0.5.
// FIXME: Remove once the Compositor natively understands reversing time.
class CompositorAnimationsTimingFunctionReverser {
public:
static PassRefPtr<TimingFunction> reverse(const LinearTimingFunction* timefunc);
static PassRefPtr<TimingFunction> reverse(const CubicBezierTimingFunction* timefunc);
static PassRefPtr<TimingFunction> reverse(const TimingFunction* timefunc);
};
class CompositorAnimations {
public:
static CompositorAnimations* instance() { return instance(0); }
static void setInstanceForTesting(CompositorAnimations* newInstance) { instance(newInstance); }
virtual bool isCandidateForAnimationOnCompositor(const Timing&, const AnimationEffect&);
virtual bool canStartAnimationOnCompositor(const Element&);
// FIXME: This should return void. We should know ahead of time whether these animations can be started.
virtual bool startAnimationOnCompositor(const Element&, const Timing&, const AnimationEffect&, Vector<int>& startedAnimationIds);
virtual void cancelAnimationOnCompositor(const Element&, int id);
virtual void pauseAnimationForTestingOnCompositor(const Element&, int id, double pauseTime);
protected:
CompositorAnimations() { }
private:
static CompositorAnimations* instance(CompositorAnimations* newInstance)
{
static CompositorAnimations* instance = new CompositorAnimations();
if (newInstance) {
instance = newInstance;
}
return instance;
}
};
} // namespace WebCore
#endif