osu/osu.Game.Rulesets.Osu/Edit/OsuSelectionHandler.cs

// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE

using System.Linq;
using osu.Framework.Input.Events;
using osu.Game.Rulesets.Osu.Objects;
using osu.Game.Screens.Edit.Compose.Components;

namespace osu.Game.Rulesets.Osu.Edit
{
    public class OsuSelectionHandler : SelectionHandler
    {
        public override void HandleDrag(DragEvent dragEvent)
        {
            base.HandleDrag(dragEvent);

            foreach (var h in SelectedHitObjects.OfType<OsuHitObject>())
            {
                if (h is Spinner)
                {
                    // Spinners don't support position adjustments
                    continue;
                }

                h.Position += dragEvent.Delta;
            }
        }
    }
}