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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using UnityEditor.MemoryProfiler;
+using UnityEditor.SceneManagement;
+using UnityEngine;
+using UnityEngine.Playables;
+using UnityEngine.Timeline;
+using Object = UnityEngine.Object;
+
+namespace UnityEditor.Timeline
+{
+ static class TimelineHelpers
+ {
+ static List<Type> s_SubClassesOfTrackDrawer;
+
+ // check whether the exposed reference is explicitly named
+ static bool IsExposedReferenceExplicitlyNamed(string name)
+ {
+ if (string.IsNullOrEmpty(name))
+ return false;
+
+ GUID guid;
+ return !GUID.TryParse(name, out guid);
+ }
+
+ static string GenerateExposedReferenceName()
+ {
+ return UnityEditor.GUID.Generate().ToString();
+ }
+
+ public static void CloneExposedReferences(ScriptableObject clone, IExposedPropertyTable sourceTable, IExposedPropertyTable destTable)
+ {
+ var cloneObject = new SerializedObject(clone);
+ SerializedProperty prop = cloneObject.GetIterator();
+ while (prop.Next(true))
+ {
+ if (prop.propertyType == SerializedPropertyType.ExposedReference)
+ {
+ var exposedNameProp = prop.FindPropertyRelative("exposedName");
+ var sourceKey = exposedNameProp.stringValue;
+ var destKey = sourceKey;
+
+ if (!IsExposedReferenceExplicitlyNamed(sourceKey))
+ destKey = GenerateExposedReferenceName();
+
+ exposedNameProp.stringValue = destKey;
+
+ var requiresCopy = sourceTable != destTable || sourceKey != destKey;
+ if (requiresCopy && sourceTable != null && destTable != null)
+ {
+ var valid = false;
+ var target = sourceTable.GetReferenceValue(sourceKey, out valid);
+ if (valid && target != null)
+ {
+ var existing = destTable.GetReferenceValue(destKey, out valid);
+ if (!valid || existing != target)
+ {
+ var destTableObj = destTable as UnityEngine.Object;
+ if (destTableObj != null)
+ TimelineUndo.PushUndo(destTableObj, "Create Clip");
+ destTable.SetReferenceValue(destKey, target);
+ }
+ }
+ }
+ }
+ }
+ cloneObject.ApplyModifiedPropertiesWithoutUndo();
+ }
+
+ public static ScriptableObject CloneReferencedPlayableAsset(ScriptableObject original, IExposedPropertyTable sourceTable, IExposedPropertyTable destTable, Object newOwner)
+ {
+ var clone = Object.Instantiate(original);
+ SaveCloneToAsset(clone, newOwner);
+ if (clone == null || (clone as IPlayableAsset) == null)
+ {
+ throw new InvalidCastException("could not cast instantiated object into IPlayableAsset");
+ }
+ CloneExposedReferences(clone, sourceTable, destTable);
+ TimelineUndo.RegisterCreatedObjectUndo(clone, "Create clip");
+
+ return clone;
+ }
+
+ static void SaveCloneToAsset(Object clone, Object newOwner)
+ {
+ if (newOwner == null)
+ return;
+
+ var containerPath = AssetDatabase.GetAssetPath(newOwner);
+ var containerAsset = AssetDatabase.LoadAssetAtPath<Object>(containerPath);
+ if (containerAsset != null)
+ {
+ TimelineCreateUtilities.SaveAssetIntoObject(clone, containerAsset);
+ EditorUtility.SetDirty(containerAsset);
+ }
+ }
+
+ static AnimationClip CloneAnimationClip(AnimationClip clip, Object owner)
+ {
+ if (clip == null)
+ return null;
+
+ var newClip = Object.Instantiate(clip);
+ newClip.name = AnimationTrackRecorder.GetUniqueRecordedClipName(owner, clip.name);
+
+ SaveAnimClipIntoObject(newClip, owner);
+ TimelineUndo.RegisterCreatedObjectUndo(newClip, "Create clip");
+
+ return newClip;
+ }
+
+ public static TimelineClip Clone(TimelineClip clip, IExposedPropertyTable sourceTable, IExposedPropertyTable destTable, double time, PlayableAsset newOwner = null)
+ {
+ if (newOwner == null)
+ newOwner = clip.parentTrack;
+
+ TimelineClip newClip = DuplicateClip(clip, sourceTable, destTable, newOwner);
+ newClip.start = time;
+ var track = newClip.parentTrack;
+ track.SortClips();
+ TrackExtensions.ComputeBlendsFromOverlaps(track.clips);
+ return newClip;
+ }
+
+ // Creates a complete clone of a track and returns it.
+ // Does not parent, or add the track to the sequence
+ public static TrackAsset Clone(PlayableAsset parent, TrackAsset trackAsset, IExposedPropertyTable sourceTable, IExposedPropertyTable destTable, PlayableAsset assetOwner = null)
+ {
+ if (trackAsset == null)
+ return null;
+
+ var timelineAsset = trackAsset.timelineAsset;
+ if (timelineAsset == null)
+ return null;
+
+ if (assetOwner == null)
+ assetOwner = parent;
+
+ // create a duplicate, then clear the clips and subtracks
+ var newTrack = Object.Instantiate(trackAsset);
+ newTrack.name = trackAsset.name;
+ newTrack.ClearClipsInternal();
+ newTrack.parent = parent;
+ newTrack.ClearSubTracksInternal();
+
+ if (trackAsset.hasCurves)
+ newTrack.curves = CloneAnimationClip(trackAsset.curves, assetOwner);
+
+ var animTrack = trackAsset as AnimationTrack;
+ if (animTrack != null && animTrack.infiniteClip != null)
+ ((AnimationTrack)newTrack).infiniteClip = CloneAnimationClip(animTrack.infiniteClip, assetOwner);
+
+ foreach (var clip in trackAsset.clips)
+ {
+ var newClip = DuplicateClip(clip, sourceTable, destTable, assetOwner);
+ newClip.parentTrack = newTrack;
+ }
+
+ newTrack.ClearMarkers();
+ foreach (var e in trackAsset.GetMarkersRaw())
+ {
+ var newMarker = Object.Instantiate(e);
+ newTrack.AddMarker(newMarker);
+ SaveCloneToAsset(newMarker, assetOwner);
+ if (newMarker is IMarker)
+ {
+ (newMarker as IMarker).Initialize(newTrack);
+ }
+ }
+
+ newTrack.SetCollapsed(trackAsset.GetCollapsed());
+
+ // calling code is responsible for adding to asset, adding to sequence, and parenting,
+ // and duplicating subtracks
+ return newTrack;
+ }
+
+ public static IEnumerable<ITimelineItem> DuplicateItemsUsingCurrentEditMode(WindowState state, IExposedPropertyTable sourceTable, IExposedPropertyTable destTable, ItemsPerTrack items, TrackAsset targetParent, double candidateTime, string undoOperation)
+ {
+ if (targetParent != null)
+ {
+ var aTrack = targetParent as AnimationTrack;
+ if (aTrack != null)
+ aTrack.ConvertToClipMode();
+
+ var duplicatedItems = DuplicateItems(items, targetParent, sourceTable, destTable, undoOperation);
+ FinalizeInsertItemsUsingCurrentEditMode(state, new[] {duplicatedItems}, candidateTime);
+ return duplicatedItems.items;
+ }
+
+ return Enumerable.Empty<ITimelineItem>();
+ }
+
+ public static IEnumerable<ITimelineItem> DuplicateItemsUsingCurrentEditMode(WindowState state, IExposedPropertyTable sourceTable, IExposedPropertyTable destTable, IEnumerable<ItemsPerTrack> items, double candidateTime, string undoOperation)
+ {
+ var duplicatedItemsGroups = new List<ItemsPerTrack>();
+ foreach (var i in items)
+ duplicatedItemsGroups.Add(DuplicateItems(i, i.targetTrack, sourceTable, destTable, undoOperation));
+
+ FinalizeInsertItemsUsingCurrentEditMode(state, duplicatedItemsGroups, candidateTime);
+ return duplicatedItemsGroups.SelectMany(i => i.items);
+ }
+
+ internal static ItemsPerTrack DuplicateItems(ItemsPerTrack items, TrackAsset target, IExposedPropertyTable sourceTable, IExposedPropertyTable destTable, string undoOperation)
+ {
+ var duplicatedItems = new List<ITimelineItem>();
+ var clips = items.clips.ToList();
+ if (clips.Any())
+ {
+ TimelineUndo.PushUndo(target, undoOperation);
+ duplicatedItems.AddRange(DuplicateClips(clips, sourceTable, destTable, target).ToItems());
+ TimelineUndo.PushUndo(target, undoOperation); // second undo causes reference fixups on redo (case 1063868)
+ }
+
+ var markers = items.markers.ToList();
+ if (markers.Any())
+ {
+ duplicatedItems.AddRange(MarkerModifier.CloneMarkersToParent(markers, target).ToItems());
+ }
+
+ return new ItemsPerTrack(target, duplicatedItems.ToArray());
+ }
+
+ static void FinalizeInsertItemsUsingCurrentEditMode(WindowState state, IList<ItemsPerTrack> itemsGroups, double candidateTime)
+ {
+ EditMode.FinalizeInsertItemsAtTime(itemsGroups, candidateTime);
+
+ SelectionManager.Clear();
+ foreach (var itemsGroup in itemsGroups)
+ {
+ var track = itemsGroup.targetTrack;
+ var items = itemsGroup.items;
+
+ EditModeUtils.SetParentTrack(items, track);
+
+ track.SortClips();
+
+ TrackExtensions.ComputeBlendsFromOverlaps(track.clips);
+ track.CalculateExtrapolationTimes();
+
+ foreach (var item in items)
+ if (item.gui != null) item.gui.Select();
+ }
+
+ var allItems = itemsGroups.SelectMany(x => x.items).ToList();
+ foreach (var item in allItems)
+ {
+ SelectionManager.Add(item);
+ }
+
+ FrameItems(state, allItems);
+ }
+
+ internal static TimelineClip Clone(TimelineClip clip, IExposedPropertyTable sourceTable, IExposedPropertyTable destTable, PlayableAsset newOwner)
+ {
+ var editorClip = EditorClipFactory.GetEditorClip(clip);
+ // Workaround for Clips not being unity object, assign it to a editor clip wrapper, clone it, and pull the clip back out
+ var newClip = Object.Instantiate(editorClip).clip;
+
+ // perform fix ups for what Instantiate cannot properly detect
+ SelectionManager.Remove(newClip);
+ newClip.parentTrack = null;
+ newClip.curves = null; // instantiate might copy the reference, we need to clear it
+
+ // curves are explicitly owned by the clip
+ if (clip.curves != null)
+ {
+ newClip.CreateCurves(AnimationTrackRecorder.GetUniqueRecordedClipName(newOwner, clip.curves.name));
+ EditorUtility.CopySerialized(clip.curves, newClip.curves);
+ TimelineCreateUtilities.SaveAssetIntoObject(newClip.curves, newOwner);
+ }
+
+ ScriptableObject playableAsset = newClip.asset as ScriptableObject;
+ if (playableAsset != null && newClip.asset is IPlayableAsset)
+ {
+ var clone = CloneReferencedPlayableAsset(playableAsset, sourceTable, destTable, newOwner);
+ newClip.asset = clone;
+
+ // special case to make the name match the recordable clips, but only if they match on the original clip
+ var originalRecordedAsset = clip.asset as AnimationPlayableAsset;
+ if (clip.recordable && originalRecordedAsset != null && originalRecordedAsset.clip != null)
+ {
+ AnimationPlayableAsset clonedAnimationAsset = clone as AnimationPlayableAsset;
+ if (clonedAnimationAsset != null && clonedAnimationAsset.clip != null)
+ {
+ clonedAnimationAsset.clip = CloneAnimationClip(originalRecordedAsset.clip, newOwner);
+ if (clip.displayName == originalRecordedAsset.clip.name && newClip.recordable)
+ {
+ clonedAnimationAsset.name = clonedAnimationAsset.clip.name;
+ newClip.displayName = clonedAnimationAsset.name;
+ }
+ }
+ }
+ }
+
+ return newClip;
+ }
+
+ static TimelineClip[] DuplicateClips(IEnumerable<TimelineClip> clips, IExposedPropertyTable sourceTable, IExposedPropertyTable destTable, PlayableAsset newOwner)
+ {
+ var newClips = new TimelineClip[clips.Count()];
+
+ int i = 0;
+
+ foreach (var clip in clips)
+ {
+ var newParent = newOwner == null ? clip.parentTrack : newOwner;
+ var newClip = DuplicateClip(clip, sourceTable, destTable, newParent);
+ newClip.parentTrack = null;
+ newClips[i++] = newClip;
+ }
+
+ return newClips;
+ }
+
+ static TimelineClip DuplicateClip(TimelineClip clip, IExposedPropertyTable sourceTable, IExposedPropertyTable destTable, PlayableAsset newOwner)
+ {
+ var newClip = Clone(clip, sourceTable, destTable, newOwner);
+
+ var track = clip.parentTrack;
+ if (track != null)
+ {
+ newClip.parentTrack = track;
+ track.AddClip(newClip);
+ }
+
+ var editor = CustomTimelineEditorCache.GetClipEditor(clip);
+ try
+ {
+ editor.OnCreate(newClip, track, clip);
+ }
+ catch (Exception e)
+ {
+ Debug.LogException(e);
+ }
+
+ return newClip;
+ }
+
+ // Given a track type, return all the playable asset types that should be
+ // visible to the user via menus
+
+ // Given a track type, return all the playable asset types
+
+
+ public static Type GetCustomDrawer(Type trackType)
+ {
+ if (s_SubClassesOfTrackDrawer == null)
+ {
+ s_SubClassesOfTrackDrawer = TypeCache.GetTypesDerivedFrom<TrackDrawer>().ToList();
+ }
+
+ foreach (var drawer in s_SubClassesOfTrackDrawer)
+ {
+ var attr = Attribute.GetCustomAttribute(drawer, typeof(CustomTrackDrawerAttribute), false) as CustomTrackDrawerAttribute;
+ if (attr != null && attr.assetType.IsAssignableFrom(trackType))
+ return drawer;
+ }
+
+ return typeof(TrackDrawer);
+ }
+
+ public static bool HaveSameContainerAsset(Object assetA, Object assetB)
+ {
+ if (assetA == null || assetB == null)
+ return false;
+
+ if ((assetA.hideFlags & HideFlags.DontSave) != 0 && (assetB.hideFlags & HideFlags.DontSave) != 0)
+ return true;
+
+ return AssetDatabase.GetAssetPath(assetA) == AssetDatabase.GetAssetPath(assetB);
+ }
+
+ public static void SaveAnimClipIntoObject(AnimationClip clip, Object asset)
+ {
+ if (asset != null)
+ {
+ clip.hideFlags = asset.hideFlags & ~HideFlags.HideInHierarchy; // show animation clips, even if the parent track isn't
+ if ((clip.hideFlags & HideFlags.DontSave) == 0)
+ {
+ AssetDatabase.AddObjectToAsset(clip, asset);
+ }
+ }
+ }
+
+ // Make sure a gameobject has all the required component for the given TrackAsset
+ public static Component AddRequiredComponent(GameObject go, TrackAsset asset)
+ {
+ if (go == null || asset == null)
+ return null;
+
+ var bindings = asset.outputs;
+ if (!bindings.Any())
+ return null;
+
+ var binding = bindings.First();
+ if (binding.outputTargetType == null || !typeof(Component).IsAssignableFrom(binding.outputTargetType))
+ return null;
+
+ var component = go.GetComponent(binding.outputTargetType);
+ if (component == null)
+ {
+ component = Undo.AddComponent(go, binding.outputTargetType);
+ }
+ return component;
+ }
+
+ public static string GetTrackCategoryName(System.Type trackType)
+ {
+ if (trackType == null)
+ return string.Empty;
+
+ string s = GetItemCategoryName(trackType);
+ if (!String.IsNullOrEmpty(s))
+ return s;
+
+ if (trackType.Namespace == null || trackType.Namespace.Contains("UnityEngine"))
+ return string.Empty;
+
+ return trackType.Namespace + "/";
+ }
+
+ public static string GetItemCategoryName(System.Type itemType)
+ {
+ if (itemType == null)
+ return string.Empty;
+
+ var attribute = itemType.GetCustomAttribute(typeof(MenuCategoryAttribute)) as MenuCategoryAttribute;
+ if (attribute != null)
+ {
+ var s = attribute.category;
+ if (!s.EndsWith("/"))
+ s += "/";
+ return s;
+ }
+
+ return string.Empty;
+ }
+
+ public static string GetTrackMenuName(System.Type trackType)
+ {
+ return ObjectNames.NicifyVariableName(trackType.Name);
+ }
+
+ // retrieve the duration of a single loop, taking into account speed
+ public static double GetLoopDuration(TimelineClip clip)
+ {
+ double length = clip.clipAssetDuration;
+ if (double.IsNegativeInfinity(length) || double.IsNaN(length))
+ return TimelineClip.kMinDuration;
+
+ if (length == double.MaxValue || double.IsInfinity(length))
+ {
+ return double.MaxValue;
+ }
+
+ return Math.Max(TimelineClip.kMinDuration, length / clip.timeScale);
+ }
+
+ public static double GetClipAssetEndTime(TimelineClip clip)
+ {
+ var d = GetLoopDuration(clip);
+ if (d < double.MaxValue)
+ d = clip.FromLocalTimeUnbound(d);
+
+ return d;
+ }
+
+ // Checks if the underlying asset duration is usable. This means the clip
+ // can loop or hold
+ public static bool HasUsableAssetDuration(TimelineClip clip)
+ {
+ double length = clip.clipAssetDuration;
+ return (length < TimelineClip.kMaxTimeValue) && !double.IsInfinity(length) && !double.IsNaN(length);
+ }
+
+ // Retrieves the starting point of each loop of a clip, relative to the start of the clip
+ // Note that if clip-in is bigger than the loopDuration, negative times will be added
+ public static double[] GetLoopTimes(TimelineClip clip)
+ {
+ if (!HasUsableAssetDuration(clip))
+ return new[] {-clip.clipIn / clip.timeScale};
+
+ var times = new List<double>();
+ double loopDuration = GetLoopDuration(clip);
+
+ if (loopDuration <= TimeUtility.kTimeEpsilon)
+ return new double[] {};
+
+
+ double start = -clip.clipIn / clip.timeScale;
+ double end = start + loopDuration;
+
+ times.Add(start);
+ while (end < clip.duration - WindowState.kTimeEpsilon)
+ {
+ times.Add(end);
+ end += loopDuration;
+ }
+
+ return times.ToArray();
+ }
+
+ public static double GetCandidateTime(WindowState state, Vector2? mousePosition, params TrackAsset[] trackAssets)
+ {
+ // Right-Click
+ if (mousePosition != null)
+ return state.GetSnappedTimeAtMousePosition(mousePosition.Value);
+
+ // Playhead
+ if (state != null && state.editSequence.director != null)
+ return state.SnapToFrameIfRequired(state.editSequence.time);
+
+ // Specific tracks end
+ if (trackAssets != null && trackAssets.Any())
+ {
+ var items = trackAssets.SelectMany(t => t.GetItems()).ToList();
+ return items.Any() ? items.Max(i => i.end) : 0;
+ }
+
+ // Timeline tracks end
+ if (state != null && state.editSequence.asset != null)
+ return state.editSequence.asset.flattenedTracks.Any() ? state.editSequence.asset.flattenedTracks.Max(t => t.end) : 0;
+
+ return 0.0;
+ }
+
+ public static TimelineClip CreateClipOnTrack(Object asset, TrackAsset parentTrack, WindowState state)
+ {
+ return CreateClipOnTrack(asset, parentTrack, GetCandidateTime(state, null, parentTrack), state);
+ }
+
+ public static TimelineClip CreateClipOnTrack(Object asset, TrackAsset parentTrack, double candidateTime)
+ {
+ WindowState state = null;
+ if (TimelineWindow.instance != null)
+ state = TimelineWindow.instance.state;
+
+ return CreateClipOnTrack(asset, parentTrack, candidateTime, state);
+ }
+
+ public static TimelineClip CreateClipOnTrack(Type playableAssetType, TrackAsset parentTrack, WindowState state)
+ {
+ return CreateClipOnTrack(playableAssetType, null, parentTrack, GetCandidateTime(state, null, parentTrack), state);
+ }
+
+ public static TimelineClip CreateClipOnTrack(Type playableAssetType, TrackAsset parentTrack, double candidateTime)
+ {
+ return CreateClipOnTrack(playableAssetType, null, parentTrack, candidateTime);
+ }
+
+ public static TimelineClip CreateClipOnTrack(Object asset, TrackAsset parentTrack, double candidateTime, WindowState state)
+ {
+ if (parentTrack == null)
+ return null;
+
+ // pick the first clip type available, unless there is one that matches the asset
+ var clipType = TypeUtility.GetPlayableAssetsHandledByTrack(parentTrack.GetType()).FirstOrDefault();
+ if (asset != null)
+ clipType = TypeUtility.GetAssetTypesForObject(parentTrack.GetType(), asset).FirstOrDefault();
+
+ if (clipType == null)
+ return null;
+
+ return CreateClipOnTrack(clipType, asset, parentTrack, candidateTime, state);
+ }
+
+ public static TimelineClip CreateClipOnTrack(Type playableAssetType, Object assignableObject, TrackAsset parentTrack, double candidateTime)
+ {
+ WindowState state = null;
+ if (TimelineWindow.instance != null)
+ state = TimelineWindow.instance.state;
+
+ return CreateClipOnTrack(playableAssetType, assignableObject, parentTrack, candidateTime, state);
+ }
+
+ public static TimelineClip CreateClipOnTrack(Type playableAssetType, Object assignableObject, TrackAsset parentTrack, double candidateTime, WindowState state)
+ {
+ if (parentTrack == null)
+ return null;
+
+ bool revertClipMode = false;
+
+ // Ideally this is done automatically by the animation track,
+ // but it's editor only because it does animation clip manipulation
+ var animTrack = parentTrack as AnimationTrack;
+ if (animTrack != null && animTrack.CanConvertToClipMode())
+ {
+ animTrack.ConvertToClipMode();
+ revertClipMode = true;
+ }
+
+ TimelineClip newClip = null;
+ if (TypeUtility.IsConcretePlayableAsset(playableAssetType))
+ {
+ try
+ {
+ newClip = parentTrack.CreateClipOfType(playableAssetType);
+ }
+ catch (InvalidOperationException) {} // expected on a mismatch
+ }
+
+ if (newClip == null)
+ {
+ if (revertClipMode)
+ animTrack.ConvertFromClipMode(animTrack.timelineAsset);
+
+ Debug.LogWarningFormat("Cannot create a clip of type {0} on a track of type {1}", playableAssetType.Name, parentTrack.GetType().Name);
+ return null;
+ }
+
+ AddClipOnTrack(newClip, parentTrack, candidateTime, assignableObject, state);
+
+ return newClip;
+ }
+
+ /// <summary>
+ /// Create a clip on track from an existing PlayableAsset
+ /// </summary>
+ public static TimelineClip CreateClipOnTrackFromPlayableAsset(IPlayableAsset asset, TrackAsset parentTrack, double candidateTime)
+ {
+ if (parentTrack == null || asset == null || !TypeUtility.IsConcretePlayableAsset(asset.GetType()))
+ return null;
+
+ TimelineClip newClip = null;
+ try
+ {
+ newClip = parentTrack.CreateClipFromPlayableAsset(asset);
+ }
+ catch
+ {
+ return null;
+ }
+
+ WindowState state = null;
+ if (TimelineWindow.instance != null)
+ state = TimelineWindow.instance.state;
+
+ AddClipOnTrack(newClip, parentTrack, candidateTime, null, state);
+
+ return newClip;
+ }
+
+ public static void CreateClipsFromObjects(Type assetType, TrackAsset targetTrack, double candidateTime, IEnumerable<Object> objects)
+ {
+ foreach (var obj in objects)
+ {
+ if (ObjectReferenceField.FindObjectReferences(assetType).Any(f => f.IsAssignable(obj)))
+ {
+ var clip = CreateClipOnTrack(assetType, obj, targetTrack, candidateTime);
+ candidateTime += clip.duration;
+ }
+ }
+ }
+
+ public static void CreateMarkersFromObjects(Type assetType, TrackAsset targetTrack, double candidateTime, IEnumerable<Object> objects)
+ {
+ var mList = new List<ITimelineItem>();
+ foreach (var obj in objects)
+ {
+ if (ObjectReferenceField.FindObjectReferences(assetType).Any(f => f.IsAssignable(obj)))
+ {
+ var marker = CreateMarkerOnTrack(assetType, obj, targetTrack, candidateTime);
+ mList.Add(marker.ToItem());
+ }
+ }
+
+ var state = TimelineWindow.instance.state;
+ for (var i = 1; i < mList.Count; ++i)
+ {
+ var delta = ItemsUtils.TimeGapBetweenItems(mList[i - 1], mList[i], state);
+ mList[i].start += delta;
+ }
+
+ FinalizeInsertItemsUsingCurrentEditMode(state, new[] {new ItemsPerTrack(targetTrack, mList)}, candidateTime);
+ state.Refresh();
+ }
+
+ public static IMarker CreateMarkerOnTrack(Type markerType, Object assignableObject, TrackAsset parentTrack, double candidateTime)
+ {
+ WindowState state = null;
+ if (TimelineWindow.instance != null)
+ state = TimelineWindow.instance.state;
+
+ var newMarker = parentTrack.CreateMarker(markerType, candidateTime); //Throws if marker is not an object
+ var obj = newMarker as ScriptableObject;
+ if (obj != null)
+ obj.name = TypeUtility.GetDisplayName(markerType);
+
+ if (assignableObject != null)
+ {
+ var director = state != null ? state.editSequence.director : null;
+ foreach (var field in ObjectReferenceField.FindObjectReferences(markerType))
+ {
+ if (field.IsAssignable(assignableObject))
+ {
+ field.Assign(newMarker as ScriptableObject, assignableObject, director);
+ break;
+ }
+ }
+ }
+
+ try
+ {
+ CustomTimelineEditorCache.GetMarkerEditor(newMarker).OnCreate(newMarker, null);
+ }
+ catch (Exception e)
+ {
+ Debug.LogException(e);
+ }
+
+ return newMarker;
+ }
+
+ public static void CreateClipsFromTypes(IEnumerable<Type> assetTypes, TrackAsset targetTrack, double candidateTime)
+ {
+ foreach (var assetType in assetTypes)
+ {
+ var clip = CreateClipOnTrack(assetType, targetTrack, candidateTime);
+ candidateTime += clip.duration;
+ }
+ }
+
+ public static void FrameItems(WindowState state, IEnumerable<ITimelineItem> items)
+ {
+ if (items == null || !items.Any() || state == null)
+ return;
+
+ // if this is called before a repaint, the timeArea can be null
+ var window = state.editorWindow as TimelineWindow;
+ if (window == null || window.timeArea == null)
+ return;
+
+ var start = (float)items.Min(x => x.start);
+ var end = (float)items.Max(x => x.end);
+ var timeRange = state.timeAreaShownRange;
+
+ // nothing to do
+ if (timeRange.x <= start && timeRange.y >= end)
+ return;
+
+ var ds = start - timeRange.x;
+ var de = end - timeRange.y;
+
+ var padding = state.PixelDeltaToDeltaTime(15);
+ var d = Math.Abs(ds) < Math.Abs(de) ? ds - padding : de + padding;
+
+ state.SetTimeAreaShownRange(timeRange.x + d, timeRange.y + d);
+ }
+
+ public static void Frame(WindowState state, double start, double end)
+ {
+ var timeRange = state.timeAreaShownRange;
+
+ // nothing to do
+ if (timeRange.x <= start && timeRange.y >= end)
+ return;
+
+ var ds = (float)start - timeRange.x;
+ var de = (float)end - timeRange.y;
+
+ var padding = state.PixelDeltaToDeltaTime(15);
+ var d = Math.Abs(ds) < Math.Abs(de) ? ds - padding : de + padding;
+
+ state.SetTimeAreaShownRange(timeRange.x + d, timeRange.y + d);
+ }
+
+ public static void RangeSelect<T>(IList<T> totalCollection, IList<T> currentSelection, T clickedItem, Action<T> selector, Action<T> remover) where T : class
+ {
+ var firstSelect = currentSelection.FirstOrDefault();
+ if (firstSelect == null)
+ {
+ selector(clickedItem);
+ return;
+ }
+
+ var idxFirstSelect = totalCollection.IndexOf(firstSelect);
+ var idxLastSelect = totalCollection.IndexOf(currentSelection.Last());
+ var idxClicked = totalCollection.IndexOf(clickedItem);
+
+ //case 927807: selection is invalid
+ if (idxFirstSelect < 0)
+ {
+ SelectionManager.Clear();
+ selector(clickedItem);
+ return;
+ }
+
+ // Expand the selection between the first selected clip and clicked clip (insertion order is important)
+ if (idxFirstSelect < idxClicked)
+ for (var i = idxFirstSelect; i <= idxClicked; ++i)
+ selector(totalCollection[i]);
+ else
+ for (var i = idxFirstSelect; i >= idxClicked; --i)
+ selector(totalCollection[i]);
+
+ // If clicked inside the selected range, shrink the selection between the the click and last selected clip
+ if (Math.Min(idxFirstSelect, idxLastSelect) < idxClicked && idxClicked < Math.Max(idxFirstSelect, idxLastSelect))
+ for (var i = Math.Min(idxLastSelect, idxClicked); i <= Math.Max(idxLastSelect, idxClicked); ++i)
+ remover(totalCollection[i]);
+
+ // Ensure clicked clip is selected
+ selector(clickedItem);
+ }
+
+ public static void Bind(TrackAsset track, Object obj, PlayableDirector director)
+ {
+ if (director != null && track != null)
+ {
+ var bindType = TypeUtility.GetTrackBindingAttribute(track.GetType());
+ if (bindType == null || bindType.type == null)
+ return;
+
+ if (obj == null || bindType.type.IsInstanceOfType(obj))
+ {
+ TimelineUndo.PushUndo(director, "Bind Track");
+ director.SetGenericBinding(track, obj);
+ }
+ else if (obj is GameObject && typeof(Component).IsAssignableFrom(bindType.type))
+ {
+ var component = (obj as GameObject).GetComponent(bindType.type);
+ if (component == null)
+ component = Undo.AddComponent(obj as GameObject, bindType.type);
+
+ TimelineUndo.PushUndo(director, "Bind Track");
+ director.SetGenericBinding(track, component);
+ }
+ }
+ }
+
+ /// <summary>
+ /// Shared code for adding a clip to a track
+ /// </summary>
+ static void AddClipOnTrack(TimelineClip newClip, TrackAsset parentTrack, double candidateTime, Object assignableObject, WindowState state)
+ {
+ var playableAsset = newClip.asset as IPlayableAsset;
+
+ newClip.parentTrack = null;
+ newClip.timeScale = 1.0;
+ newClip.mixInCurve = AnimationCurve.EaseInOut(0, 0, 1, 1);
+ newClip.mixOutCurve = AnimationCurve.EaseInOut(0, 1, 1, 0);
+
+ var playableDirector = state != null ? state.editSequence.director : null;
+
+ if (assignableObject != null)
+ {
+ foreach (var field in ObjectReferenceField.FindObjectReferences(playableAsset.GetType()))
+ {
+ if (field.IsAssignable(assignableObject))
+ {
+ newClip.displayName = assignableObject.name;
+ field.Assign(newClip.asset as PlayableAsset, assignableObject, playableDirector);
+ break;
+ }
+ }
+ }
+
+ // get the clip editor
+ try
+ {
+ CustomTimelineEditorCache.GetClipEditor(newClip).OnCreate(newClip, parentTrack, null);
+ }
+ catch (Exception e)
+ {
+ Debug.LogException(e);
+ }
+
+
+ // reset the duration as the newly assigned values may have changed the default
+ if (playableAsset != null)
+ {
+ var candidateDuration = playableAsset.duration;
+
+ if (!double.IsInfinity(candidateDuration) && candidateDuration > 0)
+ newClip.duration = Math.Min(Math.Max(candidateDuration, TimelineClip.kMinDuration), TimelineClip.kMaxTimeValue);
+ }
+
+ var newClipsByTracks = new[] { new ItemsPerTrack(parentTrack, new[] {newClip.ToItem()}) };
+
+ FinalizeInsertItemsUsingCurrentEditMode(state, newClipsByTracks, candidateTime);
+
+ if (state != null)
+ state.Refresh();
+ }
+
+ public static TrackAsset CreateTrack(TimelineAsset asset, Type type, TrackAsset parent = null, string name = null)
+ {
+ if (asset == null)
+ return null;
+
+ var track = asset.CreateTrack(type, parent, name);
+ if (track != null)
+ {
+ if (parent != null)
+ parent.SetCollapsed(false);
+
+ var editor = CustomTimelineEditorCache.GetTrackEditor(track);
+ try
+ {
+ editor.OnCreate(track, null);
+ }
+ catch (Exception e)
+ {
+ Debug.LogException(e);
+ }
+ TimelineEditor.Refresh(RefreshReason.ContentsAddedOrRemoved);
+ }
+
+ return track;
+ }
+
+ public static TrackAsset CreateTrack(Type type, TrackAsset parent = null, string name = null)
+ {
+ return CreateTrack(TimelineEditor.inspectedAsset, type, parent, name);
+ }
+
+ public static T CreateTrack<T>(TimelineAsset asset, TrackAsset parent = null, string name = null) where T : TrackAsset
+ {
+ return (T)CreateTrack(asset, typeof(T), parent, name);
+ }
+
+ public static T CreateTrack<T>(TrackAsset parent = null, string name = null) where T : TrackAsset
+ {
+ return (T)CreateTrack(TimelineEditor.inspectedAsset, typeof(T), parent, name);
+ }
+ }
+}