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31 #ifndef CompositorPendingAnimations_h
32 #define CompositorPendingAnimations_h
34 #include "core/animation/AnimationPlayer.h"
35 #include "platform/Timer.h"
36 #include "platform/heap/Handle.h"
37 #include "wtf/Vector.h"
41 // Manages the starting of pending animations on the compositor following a
42 // compositing update.
43 // For CSS Animations, used to synchronize the start of main-thread animations
44 // with compositor animations when both classes of CSS Animations are triggered
46 class CompositorPendingAnimations final {
47 DISALLOW_ALLOCATION();
50 CompositorPendingAnimations()
51 : m_timer(this, &CompositorPendingAnimations::timerFired)
54 void add(AnimationPlayer*);
55 // Returns whether we are waiting for an animation to start and should
56 // service again on the next frame.
57 bool update(bool startOnCompositor = true);
58 void notifyAnimationStarted(double monotonicAnimationStartTime, bool startedOnCompositor);
59 void notifyCompositorAnimationStarted(double monotonicAnimationStartTime);
64 void timerFired(Timer<CompositorPendingAnimations>*) { update(false); }
66 WillBeHeapVector<RefPtrWillBeMember<AnimationPlayer> > m_pending;
67 WillBeHeapVector<RefPtrWillBeMember<AnimationPlayer> > m_waitingForCompositorAnimationStart;
68 Timer<CompositorPendingAnimations> m_timer;