osu-lazer/osu.Game/Graphics/Backgrounds/Background.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.Threading.Tasks;
using osu.Framework.Allocation;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Framework.Graphics.Sprites;
using OpenTK.Graphics;
using osu.Game.Graphics.Textures;

namespace osu.Game.Graphics.Backgrounds
{
    public class Background : BufferedContainer
    {
        public Sprite Sprite;

        private readonly string textureName;

        public Background(string textureName = @"")
        {
            CacheDrawnFrameBuffer = true;

            this.textureName = textureName;
            RelativeSizeAxes = Axes.Both;

            Add(Sprite = new Sprite
            {
                RelativeSizeAxes = Axes.Both,
                Anchor = Anchor.Centre,
                Origin = Anchor.Centre,
                Colour = Color4.DarkGray,
                FillMode = FillMode.Fill,
            });
        }

        [BackgroundDependencyLoader]
        private async Task load(LargeTextureStore textures)
        {
            if (!string.IsNullOrEmpty(textureName))
                Sprite.Texture = await textures.GetAsync(textureName);
        }
    }
}