private void SetupDragOperationHost(IUserInputReceiver movingControl)
{
DragOperationHost.SetDragTarget(movingControl, WrappedSelectedItems);
var items = DesignSurface.Children;
var allExceptTarget = items.Except(WrappedSelectedItems.Children);
DragOperationHost.SnappingEngine.Magnets = allExceptTarget.ToList();
}
public DesignAidsProvider(IDesignSurface designSurface)
{
DesignSurface = designSurface;
SelectionAdorners = new Dictionary <ICanvasItem, IAdorner>();
EdgeAdorners = new Dictionary <Edge, IAdorner>();
PlaneOperation = PlaneOperation.Resize;
DragOperationHost = new DragOperationHost(DesignSurface);
DragOperationHost.DragStarted += DragOperationHostOnDragStarted;
DragOperationHost.DragEnd += DragOperationHostOnDragEnd;
SnappingEngine = new CanvasItemSnappingEngine(4);
var snappedEdges = SnappingEngine.SnappedEdges;
((INotifyCollectionChanged)snappedEdges).CollectionChanged += SnappedEdgesOnCollectionChanged;
DragOperationHost.SnappingEngine = SnappingEngine;
}
