osu/osu.Game/Beatmaps/Drawables/UpdateableBeatmapBackground...

69 lines
2.5 KiB
C#

// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
using System;
using osu.Framework.Allocation;
using osu.Framework.Bindables;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
namespace osu.Game.Beatmaps.Drawables
{
/// <summary>
/// Display a beatmap background from a local source, but fallback to online source if not available.
/// </summary>
public partial class UpdateableBeatmapBackgroundSprite : ModelBackedDrawable<IBeatmapInfo>
{
public readonly Bindable<IBeatmapInfo> Beatmap = new Bindable<IBeatmapInfo>();
protected override double LoadDelay => 500;
[Resolved]
private BeatmapManager beatmaps { get; set; } = null!;
private readonly BeatmapSetCoverType beatmapSetCoverType;
public UpdateableBeatmapBackgroundSprite(BeatmapSetCoverType beatmapSetCoverType = BeatmapSetCoverType.Cover)
{
Beatmap.BindValueChanged(b => Model = b.NewValue);
this.beatmapSetCoverType = beatmapSetCoverType;
}
/// <summary>
/// Delay before the background is unloaded while off-screen.
/// </summary>
protected virtual double UnloadDelay => 10000;
protected override DelayedLoadWrapper CreateDelayedLoadWrapper(Func<Drawable> createContentFunc, double timeBeforeLoad) =>
new DelayedLoadUnloadWrapper(createContentFunc, timeBeforeLoad, UnloadDelay) { RelativeSizeAxes = Axes.Both };
protected override double TransformDuration => 400;
protected override Drawable CreateDrawable(IBeatmapInfo? model)
{
var drawable = getDrawableForModel(model);
drawable.RelativeSizeAxes = Axes.Both;
drawable.Anchor = Anchor.Centre;
drawable.Origin = Anchor.Centre;
drawable.FillMode = FillMode.Fill;
return drawable;
}
private Drawable getDrawableForModel(IBeatmapInfo? model)
{
if (model == null)
return Empty();
// prefer online cover where available.
if (model.BeatmapSet is IBeatmapSetOnlineInfo online)
return new OnlineBeatmapSetCover(online, beatmapSetCoverType);
if (model is BeatmapInfo localModel)
return new BeatmapBackgroundSprite(beatmaps.GetWorkingBeatmap(localModel));
return new BeatmapBackgroundSprite(beatmaps.DefaultBeatmap);
}
}
}