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// Copyright 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CCLayerAnimationController_h
#define CCLayerAnimationController_h
#include "CCAnimationEvents.h"
#include <wtf/HashSet.h>
#include <wtf/Noncopyable.h>
#include <wtf/OwnPtr.h>
#include <wtf/PassOwnPtr.h>
#include <wtf/Vector.h>
namespace WebKit {
class WebTransformationMatrix;
}
namespace cc {
class Animation;
class IntSize;
class KeyframeValueList;
class CCLayerAnimationControllerClient {
public:
virtual ~CCLayerAnimationControllerClient() { }
virtual int id() const = 0;
virtual void setOpacityFromAnimation(float) = 0;
virtual float opacity() const = 0;
virtual void setTransformFromAnimation(const WebKit::WebTransformationMatrix&) = 0;
virtual const WebKit::WebTransformationMatrix& transform() const = 0;
};
class CCLayerAnimationController {
WTF_MAKE_NONCOPYABLE(CCLayerAnimationController);
public:
static PassOwnPtr<CCLayerAnimationController> create(CCLayerAnimationControllerClient*);
virtual ~CCLayerAnimationController();
// These methods are virtual for testing.
virtual void addAnimation(PassOwnPtr<CCActiveAnimation>);
virtual void pauseAnimation(int animationId, double timeOffset);
virtual void removeAnimation(int animationId);
virtual void removeAnimation(int animationId, CCActiveAnimation::TargetProperty);
virtual void suspendAnimations(double monotonicTime);
virtual void resumeAnimations(double monotonicTime);
// Ensures that the list of active animations on the main thread and the impl thread
// are kept in sync. This function does not take ownership of the impl thread controller.
virtual void pushAnimationUpdatesTo(CCLayerAnimationController*);
void animate(double monotonicTime, CCAnimationEventsVector*);
// Returns the active animation in the given group, animating the given property, if such an
// animation exists.
CCActiveAnimation* getActiveAnimation(int groupId, CCActiveAnimation::TargetProperty) const;
// Returns the active animation animating the given property that is either running, or is
// next to run, if such an animation exists.
CCActiveAnimation* getActiveAnimation(CCActiveAnimation::TargetProperty) const;
// Returns true if there are any animations that have neither finished nor aborted.
bool hasActiveAnimation() const;
// Returns true if there is an animation currently animating the given property, or
// if there is an animation scheduled to animate this property in the future.
bool isAnimatingProperty(CCActiveAnimation::TargetProperty) const;
// This is called in response to an animation being started on the impl thread. This
// function updates the corresponding main thread animation's start time.
void notifyAnimationStarted(const CCAnimationEvent&);
// If a sync is forced, then the next time animation updates are pushed to the impl
// thread, all animations will be transferred.
void setForceSync() { m_forceSync = true; }
void setClient(CCLayerAnimationControllerClient*);
protected:
explicit CCLayerAnimationController(CCLayerAnimationControllerClient*);
private:
typedef HashSet<int, DefaultHash<int>::Hash, WTF::UnsignedWithZeroKeyHashTraits<int> > TargetProperties;
void pushNewAnimationsToImplThread(CCLayerAnimationController*) const;
void removeAnimationsCompletedOnMainThread(CCLayerAnimationController*) const;
void pushPropertiesToImplThread(CCLayerAnimationController*) const;
void replaceImplThreadAnimations(CCLayerAnimationController*) const;
void startAnimationsWaitingForNextTick(double monotonicTime, CCAnimationEventsVector*);
void startAnimationsWaitingForStartTime(double monotonicTime, CCAnimationEventsVector*);
void startAnimationsWaitingForTargetAvailability(double monotonicTime, CCAnimationEventsVector*);
void resolveConflicts(double monotonicTime);
void markAnimationsForDeletion(double monotonicTime, CCAnimationEventsVector*);
void purgeAnimationsMarkedForDeletion();
void tickAnimations(double monotonicTime);
// If this is true, we force a sync to the impl thread.
bool m_forceSync;
CCLayerAnimationControllerClient* m_client;
Vector<OwnPtr<CCActiveAnimation> > m_activeAnimations;
};
} // namespace cc
#endif // CCLayerAnimationController_h
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