osu/osu.Game/Skinning/SkinProvidingContainer.cs

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