//Corrects clips durations to fit at insertion point, if needed
public static void PrepareItemsForInsertion(IEnumerable <ItemsPerTrack> itemsGroups)
{
foreach (var itemsGroup in itemsGroups)
{
var siblings = ItemsUtils.GetItemsExcept(itemsGroup.targetTrack, itemsGroup.items);
foreach (var item in itemsGroup.items.OfType <ITrimmable>())
{
var eatenItems = siblings.Where(c => EditModeUtils.IsItemWithinRange(c, item.start, item.end)).ToList();
var intersectedItem = EditModeUtils.GetFirstIntersectedItem(siblings, item.end);
if (intersectedItem != null)
{
eatenItems.Add(intersectedItem);
}
var blendableItems = eatenItems.OfType <IBlendable>();
if (blendableItems.Any())
{
var minTime = blendableItems.Min(c => c.end - c.rightBlendDuration);
if (item.end > minTime)
{
item.SetEnd(minTime, false);
}
}
}
}
}
static void Insert(TrackAsset track, IEnumerable <ITimelineItem> items)
{
if (track == null)
{
return;
}
var orderedItems = ItemsUtils.GetItemsExcept(track, items)
.OfType <ITrimmable>()
.OrderBy(i => i.start).ToArray();
foreach (var item in items.OfType <ITrimmable>())
{
var from = item.start;
var to = item.end;
var overlappedItems = orderedItems.Where(i => EditModeUtils.Overlaps(i, from, to));
foreach (var overlappedItem in overlappedItems)
{
if (EditModeUtils.IsItemWithinRange(overlappedItem, from, to))
{
overlappedItem.Delete();
}
else
{
if (overlappedItem.start >= from)
{
overlappedItem.TrimStart(to);
}
else
{
overlappedItem.TrimEnd(from);
}
}
}
var includingItems = orderedItems.Where(c => c.start <from && c.end> to);
foreach (var includingItem in includingItems)
{
var newItem = includingItem.CloneTo(track, includingItem.start) as ITrimmable;
includingItem.TrimStart(to);
if (newItem != null)
{
newItem.SetEnd(from, false);
}
}
}
}
public bool ValidateMove(ItemsPerTrack itemsGroup)
{
var track = itemsGroup.targetTrack;
var items = itemsGroup.items;
if (EditModeUtils.IsInfiniteTrack(track))
{
double startTime;
double stopTime;
EditModeUtils.GetInfiniteClipBoundaries(track, out startTime, out stopTime);
return(items.All(item =>
!EditModeUtils.IsItemWithinRange(item, startTime, stopTime) &&
!EditModeUtils.IsRangeWithinItem(startTime, stopTime, item)));
}
var siblings = ItemsUtils.GetItemsExcept(itemsGroup.targetTrack, items);
return(items.All(item => EditModeMixUtils.GetPlacementValidity(item, siblings) == PlacementValidity.Valid));
}