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34 #include "core/animation/TimedItem.h"
35 #include "wtf/RefPtr.h"
39 class DocumentTimeline;
41 class Player FINAL : public RefCounted<Player> {
45 static PassRefPtr<Player> create(DocumentTimeline&, TimedItem*);
47 // Returns whether this player is still current or in effect.
48 // timeToEffectChange returns:
49 // infinity - if this player is no longer in effect
50 // 0 - if this player requires an update on the next frame
51 // n - if this player requires an update after 'n' units of time
52 bool update(double* timeToEffectChange = 0, bool* didTriggerStyleRecalc = 0);
55 double currentTime() const;
56 void setCurrentTime(double);
58 bool paused() const { return !m_isPausedForTesting && pausedInternal(); }
61 double playbackRate() const { return m_playbackRate; }
62 void setPlaybackRate(double);
63 double timeDrift() const;
64 DocumentTimeline& timeline() { return m_timeline; }
66 bool hasStartTime() const { return !isNull(m_startTime); }
67 double startTime() const { return m_startTime; }
68 void setStartTime(double);
70 TimedItem* source() { return m_content.get(); }
71 TimedItem* source(bool& isNull) { isNull = !m_content; return m_content.get(); }
73 // Pausing via this method is not reflected in the value returned by
74 // paused() and must never overlap with pausing via setPaused().
75 void pauseForTesting();
77 bool maybeStartAnimationOnCompositor();
78 void cancelAnimationOnCompositor();
79 bool hasActiveAnimationsOnCompositor();
82 Player(DocumentTimeline&, TimedItem*);
83 inline double pausedTimeDrift() const;
84 inline double currentTimeBeforeDrift() const;
87 void setPausedImpl(bool);
88 // Reflects all pausing, including via pauseForTesting().
89 bool pausedInternal() const { return !isNull(m_pauseStartTime); }
91 double m_pauseStartTime;
92 double m_playbackRate;
96 RefPtr<TimedItem> m_content;
97 DocumentTimeline& m_timeline;
98 bool m_isPausedForTesting;