osu/osu.Game/Overlays/Toolbar/ToolbarUserButton.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 osu.Framework.Allocation;
using osu.Framework.Extensions.Color4Extensions;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Game.Online.API;
using osu.Game.Users;
using OpenTK;
using OpenTK.Graphics;

namespace osu.Game.Overlays.Toolbar
{
    public class ToolbarUserButton : ToolbarButton, IOnlineComponent
    {
        private readonly UpdateableAvatar avatar;

        public ToolbarUserButton()
        {
            AutoSizeAxes = Axes.X;

            DrawableText.Font = @"Exo2.0-MediumItalic";

            Add(new OpaqueBackground { Depth = 1 });

            Flow.Add(avatar = new UpdateableAvatar
            {
                Masking = true,
                Size = new Vector2(32),
                Anchor = Anchor.CentreLeft,
                Origin = Anchor.CentreLeft,
                CornerRadius = 4,
                EdgeEffect = new EdgeEffectParameters
                {
                    Type = EdgeEffectType.Shadow,
                    Radius = 4,
                    Colour = Color4.Black.Opacity(0.1f),
                }
            });
        }

        [BackgroundDependencyLoader]
        private void load(APIAccess api)
        {
            api.Register(this);
        }

        public void APIStateChanged(APIAccess api, APIState state)
        {
            switch (state)
            {
                default:
                    Text = @"Guest";
                    avatar.User = new User();
                    break;
                case APIState.Online:
                    Text = api.Username;
                    avatar.User = api.LocalUser;
                    break;
            }
        }
    }
}