public bool?PreLoadImage(TrackCallback Callback)
{
if (cover != null)
{
callbacks.Add(Callback);
return(true);
}
else if (_coverLoadAttempted)
{
return(false);
}
else if (loadingImage)
{
callbacks.Add(Callback);
return(null);
}
loadingImage = true;
callbacks.Add(Callback);
Thread t = new System.Threading.Thread(preLoadImage);
#if DEBUG
t.Name = "Preload Image Thread";
#endif
t.Priority = ThreadPriority.Normal;
t.IsBackground = true;
t.Start();
return(null);
}
/// <summary>
/// Add a notification callback of track type to the notification center.
/// </summary>
/// <param name="notificationType">Notification type</param>
/// <param name="trackCallback">Callback function to call when event gets triggered</param>
/// <returns>int | 0 for invalid notification type, -1 for adding existing notification
/// or the notification id of newly added notification.</returns>
public int AddNotification(NotificationType notificationType, TrackCallback trackCallback)
{
if (!IsNotificationTypeValid(notificationType, NotificationType.Track))
{
return(0);
}
return(AddNotification(notificationType, (object)trackCallback));
}
public override void resetProperty()
{
base.resetProperty();
mTarget = null;
mDoneCallback = null;
mDoingCallback = null;
mOffset = Vector3.zero;
mSpeed = 0.0f;
}
public override void init()
{
base.init();
mTarget = null;
mDoneCallback = null;
mTrackingCallback = null;
mOffset = Vector3.zero;
mSpeed = 0.0f;
}
public virtual void setMoveDoneTrack(Transformable target, TrackCallback doneCallback, bool callLast = true)
{
TrackCallback tempCallback = mDoneCallback;
mDoneCallback = null;
// 如果回调函数当前不为空,则是中断了正在进行的变化
if (callLast)
{
tempCallback?.Invoke(this, true);
}
mDoneCallback = doneCallback;
mTarget = target;
if (mTarget == null)
{
setActive(false);
}
}
public void setTrackingCallback(TrackCallback callback)
{
mTrackingCallback = callback;
}
