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osu-lazer/osu.Game/Skinning/SkinProvidingContainer.cs

107 lines
3.4 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.Audio.Sample;
using osu.Framework.Bindables;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Framework.Graphics.Textures;
using osu.Game.Audio;
namespace osu.Game.Skinning
{
/// <summary>
/// A container which adds a local <see cref="ISkinSource"/> to the hierarchy.
/// </summary>
public class SkinProvidingContainer : Container, ISkinSource
{
public event Action SourceChanged;
private readonly ISkin skin;
private ISkinSource fallbackSource;
protected virtual bool AllowDrawableLookup(ISkinComponent component) => true;
protected virtual bool AllowTextureLookup(string componentName) => true;
protected virtual bool AllowSampleLookup(ISampleInfo componentName) => true;
protected virtual bool AllowConfigurationLookup => true;
public SkinProvidingContainer(ISkin skin)
{
this.skin = skin;
RelativeSizeAxes = Axes.Both;
}
public Drawable GetDrawableComponent(ISkinComponent component)
{
Drawable sourceDrawable;
if (AllowDrawableLookup(component) && (sourceDrawable = skin?.GetDrawableComponent(component)) != null)
return sourceDrawable;
return fallbackSource?.GetDrawableComponent(component);
}
public Texture GetTexture(string componentName)
{
Texture sourceTexture;
if (AllowTextureLookup(componentName) && (sourceTexture = skin?.GetTexture(componentName)) != null)
return sourceTexture;
return fallbackSource?.GetTexture(componentName);
}
public SampleChannel GetSample(ISampleInfo sampleInfo)
{
SampleChannel sourceChannel;
if (AllowSampleLookup(sampleInfo) && (sourceChannel = skin?.GetSample(sampleInfo)) != null)
return sourceChannel;
return fallbackSource?.GetSample(sampleInfo);
}
public IBindable<TValue> GetConfig<TLookup, TValue>(TLookup lookup)
{
if (AllowConfigurationLookup && skin != null)
{
var bindable = skin.GetConfig<TLookup, TValue>(lookup);
if (bindable != null)
return bindable;
}
return fallbackSource?.GetConfig<TLookup, TValue>(lookup);
}
protected virtual void TriggerSourceChanged() => SourceChanged?.Invoke();
protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent)
{
var dependencies = new DependencyContainer(base.CreateChildDependencies(parent));
fallbackSource = dependencies.Get<ISkinSource>();
if (fallbackSource != null)
fallbackSource.SourceChanged += TriggerSourceChanged;
dependencies.CacheAs<ISkinSource>(this);
return dependencies;
}
protected override void Dispose(bool isDisposing)
{
// Must be done before base.Dispose()
SourceChanged = null;
base.Dispose(isDisposing);
if (fallbackSource != null)
fallbackSource.SourceChanged -= TriggerSourceChanged;
}
}
}