test

My project/Library/PackageCache/com.unity.timeline/Editor/Window/TimelineWindowTimeControl.cs

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+using System;
+using UnityEditorInternal;
+using UnityEngine;
+using UnityEngine.Timeline;
+using Object = UnityEngine.Object;
+
+namespace UnityEditor.Timeline
+{
+    class TimelineWindowTimeControl : IAnimationWindowControl
+    {
+        [Serializable]
+        public struct ClipData
+        {
+            public double start;
+            public double duration;
+            public TrackAsset track;
+        }
+
+#if UNITY_2021_2_OR_NEWER
+        const AnimationWindowState.SnapMode k_SnapMode = AnimationWindowState.SnapMode.SnapToFrame;
+#else
+        const AnimationWindowState.SnapMode k_SnapMode = AnimationWindowState.SnapMode.SnapToClipFrame;
+#endif
+
+        [SerializeField] ClipData m_ClipData;
+        [SerializeField] TimelineClip m_Clip;
+        [SerializeField] AnimationWindowState m_AnimWindowState;
+
+        TrackAsset track
+        {
+            get
+            {
+                if (m_Clip != null)
+                {
+                    return m_Clip.GetParentTrack();
+                }
+                return m_ClipData.track;
+            }
+        }
+
+        static TimelineWindow window
+        {
+            get
+            {
+                return TimelineWindow.instance;
+            }
+        }
+
+        static WindowState state
+        {
+            get
+            {
+                if (window != null)
+                    return window.state;
+                return null;
+            }
+        }
+
+        void OnStateChange()
+        {
+            if (m_AnimWindowState != null)
+                m_AnimWindowState.Repaint();
+        }
+
+        public void Init(AnimationWindowState animState, TimelineClip clip)
+        {
+            m_Clip = clip;
+            m_AnimWindowState = animState;
+        }
+
+        public void Init(AnimationWindowState animState, ClipData clip)
+        {
+            m_ClipData = clip;
+            m_AnimWindowState = animState;
+        }
+
+        public override void OnEnable()
+        {
+            if (state != null)
+                state.OnTimeChange += OnStateChange;
+
+            base.OnEnable();
+        }
+
+        public void OnDisable()
+        {
+            if (state != null)
+                state.OnTimeChange -= OnStateChange;
+        }
+
+        public override AnimationKeyTime time
+        {
+            get
+            {
+                if (state == null)
+                    return AnimationKeyTime.Time(0.0f, 0.0f);
+
+                return AnimationKeyTime.Time(ToAnimationClipTime(state.editSequence.time), (float)state.referenceSequence.frameRate);
+            }
+        }
+
+        void ChangeTime(double newTime)
+        {
+            if (state != null && state.editSequence.director != null)
+            {
+                // avoid rounding errors
+                var finalTime = ToGlobalTime(newTime);
+                if (TimeUtility.OnFrameBoundary(finalTime, state.referenceSequence.frameRate, TimeUtility.kFrameRateEpsilon))
+                    finalTime = TimeUtility.RoundToFrame(finalTime, state.referenceSequence.frameRate);
+                state.editSequence.time = finalTime;
+
+                window.Repaint();
+            }
+        }
+
+        void ChangeFrame(int frame)
+        {
+            frame = Math.Max(0, frame);
+
+            if (state != null && state.referenceSequence != null)
+            {
+                double frameTime = TimeUtility.FromFrames(frame, state.referenceSequence.frameRate);
+                ChangeTime(frameTime);
+            }
+        }
+
+        public override void GoToTime(float newTime)
+        {
+            ChangeTime(newTime);
+        }
+
+        public override void GoToFrame(int frame)
+        {
+            ChangeFrame(frame);
+        }
+
+        public override void StartScrubTime() { }
+
+        public override void EndScrubTime() { }
+
+        public override void ScrubTime(float newTime)
+        {
+            ChangeTime(newTime);
+        }
+
+        public override void GoToPreviousFrame()
+        {
+            if (state != null)
+                ChangeFrame(state.editSequence.frame - 1);
+        }
+
+        public override void GoToNextFrame()
+        {
+            if (state != null)
+                ChangeFrame(state.editSequence.frame + 1);
+        }
+
+        AnimationWindowCurve[] GetCurves()
+        {
+            var curves =
+                (m_AnimWindowState.showCurveEditor &&
+                    m_AnimWindowState.activeCurves.Count > 0) ? m_AnimWindowState.activeCurves : m_AnimWindowState.allCurves;
+            return curves.ToArray();
+        }
+
+        public override void GoToPreviousKeyframe()
+        {
+            var newTime = AnimationWindowUtility.GetPreviousKeyframeTime(GetCurves(), time.time, m_AnimWindowState.clipFrameRate);
+            GoToTime(m_AnimWindowState.SnapToFrame(newTime, k_SnapMode));
+        }
+
+        public override void GoToNextKeyframe()
+        {
+            var newTime = AnimationWindowUtility.GetNextKeyframeTime(GetCurves(), time.time, m_AnimWindowState.clipFrameRate);
+            GoToTime(m_AnimWindowState.SnapToFrame(newTime, k_SnapMode));
+        }
+
+        public override void GoToFirstKeyframe()
+        {
+            GoToTime(0);
+        }
+
+        public override void GoToLastKeyframe()
+        {
+            double animClipTime = 0;
+            if (m_Clip != null)
+            {
+                var curves = m_Clip.curves;
+                var animAsset = m_Clip.asset as AnimationPlayableAsset;
+                if (animAsset != null)
+                {
+                    animClipTime = animAsset.clip != null ? animAsset.clip.length : 0;
+                }
+                else if (curves != null)
+                {
+                    animClipTime = curves.length;
+                }
+                else
+                {
+                    animClipTime = m_Clip.clipAssetDuration;
+                }
+            }
+            else
+            {
+                animClipTime = m_ClipData.duration;
+            }
+
+            GoToTime((float)animClipTime);
+        }
+
+        public override bool canPlay
+        {
+            get
+            {
+                return state != null && state.previewMode;
+            }
+        }
+
+        public override bool playing
+        {
+            get
+            {
+                return state != null && state.playing;
+            }
+        }
+
+        static void SetPlaybackState(bool playbackState)
+        {
+            if (state == null || playbackState == state.playing)
+                return;
+
+            state.SetPlaying(playbackState);
+        }
+
+        public override bool StartPlayback()
+        {
+            SetPlaybackState(true);
+            return state != null && state.playing;
+        }
+
+        public override void StopPlayback()
+        {
+            SetPlaybackState(false);
+        }
+
+        public override bool PlaybackUpdate() { return state != null && state.playing; }
+
+        public override bool canRecord
+        {
+            get { return state != null && state.canRecord; }
+        }
+
+        public override bool recording
+        {
+            get { return state != null && state.recording; }
+        }
+
+        public override bool canPreview
+        {
+            get { return false; }
+        }
+
+        public override bool previewing
+        {
+            get { return true; }
+        }
+
+        public override bool StartRecording(Object targetObject)
+        {
+            if (!canRecord)
+                return false;
+
+            if (track != null && state != null && !state.ignorePreview)
+            {
+                state.ArmForRecord(track);
+                return state.recording;
+            }
+
+            return false;
+        }
+
+        public override void StopRecording()
+        {
+            if (track != null && state != null && !state.ignorePreview)
+                state.UnarmForRecord(track);
+        }
+
+        public override void OnSelectionChanged() { }
+
+        public override void ResampleAnimation() { }
+
+        public override bool StartPreview()
+        {
+            if (state != null)
+                state.previewMode = true;
+            return state != null && state.previewMode;
+        }
+
+        public override void StopPreview()
+        {
+            if (state != null)
+                state.previewMode = false;
+        }
+
+        public override void ProcessCandidates() { }
+        public override void ClearCandidates() { }
+
+        double ToGlobalTime(double localTime)
+        {
+            if (m_Clip != null)
+                return Math.Max(0, m_Clip.FromLocalTimeUnbound(localTime));
+            return Math.Max(0, m_ClipData.start + localTime);
+        }
+
+        float ToAnimationClipTime(double globalTime)
+        {
+            if (m_Clip != null)
+                return (float)m_Clip.ToLocalTimeUnbound(globalTime);
+            return (float)(globalTime - m_ClipData.start);
+        }
+    }
+}