internal PolyLineVertexThumb(IPolyLineCanvasItem polyLine, int vertexIndex)
{
if (polyLine == null)
{
throw new ArgumentNullException(nameof(polyLine));
}
PolyLine = polyLine;
VertexIndex = vertexIndex;
DragDelta += PolyLineVertexThumb_DragDelta;
DragStarted += PolyLineVertexThumb_DragStarted;
DragCompleted += PolyLineVertexThumb_DragCompleted;
}
public PolyLineVerticesAdorner(IPolyLineCanvasItem adornedObject) : base(adornedObject)
{
CollectionChangedEventManager.AddHandler(adornedObject.Points, (sender, e) =>
{
switch (e.Action)
{
case NotifyCollectionChangedAction.Add:
case NotifyCollectionChangedAction.Remove:
case NotifyCollectionChangedAction.Reset:
ResetThumbs();
break;
case NotifyCollectionChangedAction.Move:
case NotifyCollectionChangedAction.Replace:
Debug.Assert(e.NewItems.Count == 1);
//Debug.Print("Load VT {0} -- {1}", vertexThumbs.GetHashCode(), vertexThumbs.Count);
if (vertexThumbs.Count > e.OldStartingIndex)
{
vertexThumbs[e.OldStartingIndex].RefreshPosition();
}
break;
}
});
}
