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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 CC_ANIMATION_LAYER_ANIMATION_CONTROLLER_H_
#define CC_ANIMATION_LAYER_ANIMATION_CONTROLLER_H_
#include "base/basictypes.h"
#include "base/hash_tables.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/observer_list.h"
#include "base/time.h"
#include "cc/animation/animation_events.h"
#include "cc/animation/layer_animation_event_observer.h"
#include "cc/base/cc_export.h"
#include "cc/base/scoped_ptr_vector.h"
#include "ui/gfx/transform.h"
namespace gfx { class Transform; }
namespace cc {
class Animation;
class AnimationRegistrar;
class KeyframeValueList;
class LayerAnimationValueObserver;
class CC_EXPORT LayerAnimationController
: public base::RefCounted<LayerAnimationController>,
public LayerAnimationEventObserver {
public:
static scoped_refptr<LayerAnimationController> Create(int id);
int id() const { return id_; }
// These methods are virtual for testing.
virtual void AddAnimation(scoped_ptr<Animation> animation);
virtual void PauseAnimation(int animation_id, double time_offset);
virtual void RemoveAnimation(int animation_id);
virtual void RemoveAnimation(int animation_id,
Animation::TargetProperty target_property);
virtual void SuspendAnimations(double monotonic_time);
virtual void ResumeAnimations(double monotonic_time);
// 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(
LayerAnimationController* controller_impl);
void Animate(double monotonic_time);
void AccumulatePropertyUpdates(double monotonic_time,
AnimationEventsVector* events);
void UpdateState(AnimationEventsVector* events);
// Returns the active animation in the given group, animating the given
// property, if such an animation exists.
Animation* GetAnimation(int group_id,
Animation::TargetProperty target_property) const;
// Returns the active animation animating the given property that is either
// running, or is next to run, if such an animation exists.
Animation* GetAnimation(Animation::TargetProperty target_property) const;
// Returns true if there are any animations that have neither finished nor
// aborted.
bool HasActiveAnimation() const;
// Returns true if there are any animations at all to process.
bool has_any_animation() const { return !active_animations_.empty(); }
// 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(Animation::TargetProperty target_property) 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.
virtual void OnAnimationStarted(const AnimationEvent& event) OVERRIDE;
// If a sync is forced, then the next time animation updates are pushed to the
// impl thread, all animations will be transferred.
void set_force_sync() { force_sync_ = true; }
void SetAnimationRegistrar(AnimationRegistrar* registrar);
AnimationRegistrar* animation_registrar() { return registrar_; }
void AddObserver(LayerAnimationValueObserver* observer);
void RemoveObserver(LayerAnimationValueObserver* observer);
protected:
friend class base::RefCounted<LayerAnimationController>;
LayerAnimationController(int id);
virtual ~LayerAnimationController();
private:
typedef base::hash_set<int> TargetProperties;
void PushNewAnimationsToImplThread(
LayerAnimationController* controller_impl) const;
void RemoveAnimationsCompletedOnMainThread(
LayerAnimationController* controller_impl) const;
void PushPropertiesToImplThread(
LayerAnimationController* controller_impl) const;
void ReplaceImplThreadAnimations(
LayerAnimationController* controller_impl) const;
void StartAnimationsWaitingForNextTick(double monotonic_time);
void StartAnimationsWaitingForStartTime(double monotonic_time);
void StartAnimationsWaitingForTargetAvailability(double monotonic_time);
void ResolveConflicts(double monotonic_time);
void PromoteStartedAnimations(double monotonic_time,
AnimationEventsVector* events);
void MarkFinishedAnimations(double monotonic_time);
void MarkAnimationsForDeletion(double monotonic_time,
AnimationEventsVector* events);
void PurgeAnimationsMarkedForDeletion();
void TickAnimations(double monotonic_time);
enum UpdateActivationType {
NormalActivation,
ForceActivation
};
void UpdateActivation(UpdateActivationType type);
void NotifyObserversOpacityAnimated(float opacity);
void NotifyObserversTransformAnimated(const gfx::Transform& transform);
bool HasActiveObserver();
// If this is true, we force a sync to the impl thread.
bool force_sync_;
AnimationRegistrar* registrar_;
int id_;
ScopedPtrVector<Animation> active_animations_;
// This is used to ensure that we don't spam the registrar.
bool is_active_;
double last_tick_time_;
ObserverList<LayerAnimationValueObserver> observers_;
DISALLOW_COPY_AND_ASSIGN(LayerAnimationController);
};
} // namespace cc
#endif // CC_ANIMATION_LAYER_ANIMATION_CONTROLLER_H_
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