71 lines
2.7 KiB
C#
71 lines
2.7 KiB
C#
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using System.Collections.Generic;
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using System.Linq;
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using UnityEditor;
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using UnityEditor.Timeline;
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using UnityEditor.Timeline.Actions;
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using UnityEngine.Timeline;
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namespace Timeline.Samples
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{
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// Adds an additional item in context menus that will create a new annotation
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// and sets its description field with the clipboard's contents.
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[MenuEntry("Create Annotation from clipboard contents")]
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public class CreateAnnotationAction : TimelineAction
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{
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// Specifies the action's prerequisites:
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// - Invalid (grayed out in the menu) if no text content is in the clipboard;
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// - NotApplicable (not shown in the menu) if no track is selected;
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// - Valid (shown in the menu) otherwise.
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public override ActionValidity Validate(ActionContext context)
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{
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// get the current text content of the clipboard
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string clipboardTextContent = EditorGUIUtility.systemCopyBuffer;
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if (clipboardTextContent.Length == 0)
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{
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return ActionValidity.Invalid;
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}
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// Timeline's current selected items can be fetched with `context`
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IEnumerable<TrackAsset> selectedTracks = context.tracks;
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if (!selectedTracks.Any() || selectedTracks.All(track => track is GroupTrack))
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{
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return ActionValidity.NotApplicable;
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}
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return ActionValidity.Valid;
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}
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// Creates a new annotation and add it to the selected track.
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public override bool Execute(ActionContext context)
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{
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// to find at which time to create a new marker, we need to consider how this action was invoked.
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// If the action was invoked by a context menu item, then we can use the context's invocation time.
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// If the action was invoked through a keyboard shortcut, we can use Timeline's playhead time instead.
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double time;
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if (context.invocationTime.HasValue)
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{
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time = context.invocationTime.Value;
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}
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else
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{
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time = TimelineEditor.inspectedDirector.time;
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}
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string clipboardTextContent = EditorGUIUtility.systemCopyBuffer;
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IEnumerable<TrackAsset> selectedTracks = context.tracks;
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foreach (TrackAsset track in selectedTracks)
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{
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if (track is GroupTrack)
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continue;
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AnnotationMarker annotation = track.CreateMarker<AnnotationMarker>(time);
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annotation.description = clipboardTextContent;
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annotation.title = "Annotation";
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}
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return true;
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}
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}
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}
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