mathe/Library/PackageCache/com.unity.timeline@1.7.5/Samples~/Customization/Annotation/Editor/CreateAnnotationAction.cs
2024-09-20 20:30:10 +02:00

71 lines
2.7 KiB
C#

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