private void _OnUpdateTimeLinkTrackItemActiveShow(TimeLineTrackItem item)
{
if (OnUpdateTimeLinkTrackItemActiveShow != null)
{
OnUpdateTimeLinkTrackItemActiveShow(item);
}
}
// 移动后的帧起始时间是否合法,合法条件:移动后的帧开始时间
// 不在前面帧之前或与之一致,不在后面帧之后或与之一致
// 此方法逻辑严谨性依赖于不能在同一时间重复添加关键帧
public bool MovedFrameStartIsLegitimate(Int64 originalStartTime, Int64 frameDelta)
{
int keyFrameIndex = 0;
for (int i = 0; i < mTrackItems.Count; ++i)
{
if (mTrackItems[i].FrameStart == originalStartTime)
{
keyFrameIndex = i;
break;
}
}
if (keyFrameIndex > 0)
{
TimeLineTrackItem previousKeyFrameItem = mTrackItems[keyFrameIndex - 1];
if (originalStartTime + frameDelta <= previousKeyFrameItem.FrameStart)
{
return(false);
}
}
if (keyFrameIndex < mTrackItems.Count - 1)
{
TimeLineTrackItem nextKeyFrameItem = mTrackItems[keyFrameIndex + 1];
if (originalStartTime + frameDelta >= nextKeyFrameItem.FrameStart)
{
return(false);
}
}
return(true);
}
private void _OnTimeLineTrackItemSelected(TimeLineTrackItem item)
{
if (OnTimeLineTrackItemSelected != null)
{
OnTimeLineTrackItemSelected(item);
}
}
private void _OnRemoveTimeLineTrackItem(TimeLineTrackItem item)
{
Canvas_Track.Children.Remove(item);
mTrackItems.Remove(item);
if (OnRemoveTimeLineTrackItem != null)
{
OnRemoveTimeLineTrackItem(item);
}
}
public void RemoveTrackItem(Int64 currertFrameTime)
{
TimeLineTrackItem trackItem = null;
for (int i = 0; i < mTrackItems.Count; ++i)
{
if (mTrackItems[i].FrameStart == currertFrameTime)
{
trackItem = mTrackItems[i];
break;
}
}
Canvas_Track.Children.Remove(trackItem);
mTrackItems.Remove(trackItem);
}
public void AddTrackItem(TimeLineKeyFrameObjectInterface keyFrameItem)
{
var item = new TimeLineTrackItem(this, keyFrameItem);
BindingOperations.SetBinding(item, UserControl.HeightProperty, new Binding("ActualHeight")
{
Source = this
});
item.OnRemoveTimeLineTrackItem = new TimeLineTrackItem.Delegate_RemoveTimeLineTrackItem(_OnRemoveTimeLineTrackItem);
item.OnUpdateTimeLineTrackItemActiveShow = new TimeLineTrackItem.Delegate_OnUpdateTimeLinkTrackItemActiveShow(_OnUpdateTimeLinkTrackItemActiveShow);
item.OnSelected = new TimeLineTrackItem.Delegate_OnSelected(_OnTimeLineTrackItemSelected);
mTrackItems.Add(item);
Canvas_Track.Children.Add(item);
mTrackItems.Sort(CompareTimeLineTrackItem);
UpdateTrackShow();
mHostControl?.OnCreateTimeLineTrackItem?.Invoke(item);
}
private void _OnTimeLineTrackItemSelected(TimeLineTrackItem item)
{
if (mSelectedItem == item)
{
return;
}
if (mSelectedItem != null)
{
mSelectedItem.IsSelected = false;
OnTimeLineTrackItemUnSelected?.Invoke(mSelectedItem);
}
if (OnTimeLineTrackItemSelected != null)
{
OnTimeLineTrackItemSelected(item);
}
mSelectedItem = item;
}
private static int CompareTimeLineTrackItem(TimeLineTrackItem item0, TimeLineTrackItem item1)
{
if (item0 == item1)
{
return(0);
}
if (item0 == null)
{
if (item1 == null)
{
return(0);
}
else
{
return(-1);
}
}
else
{
if (item1 == null)
{
return(1);
}
else
{
if (item0.FrameStart > item1.FrameStart)
{
return(1);
}
else if (item0.FrameStart < item1.FrameStart)
{
return(-1);
}
else
{
return(0);
}
}
}
}
private void _OnCreateTimeLineTrackItem(TimeLineTrackItem item)
{
OnCreateTimeLineTrackItem?.Invoke(item);
}
private void _OnRemoveTimeLineTrackItem(TimeLineTrackItem item)
{
item.HostTimeLineTrack.ListItem.TLObject.RemoveKeyFrameObject(item.KeyFrameItem);
OnRemoveTimeLineTrackItem?.Invoke(item);
}
