osu/osu.Game/Skinning/SkinnableDrawable.cs

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// 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;
using osu.Framework.Graphics;
using OpenTK;
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namespace osu.Game.Skinning
{
public class SkinnableDrawable : SkinnableDrawable<Drawable>
{
public SkinnableDrawable(string name, Func<string, Drawable> defaultImplementation, bool fallback = true, bool restrictSize = true)
: base(name, defaultImplementation, fallback, restrictSize)
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{
}
}
public class SkinnableDrawable<T> : SkinReloadableDrawable
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where T : Drawable
{
private readonly Func<string, T> createDefault;
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private readonly string componentName;
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private readonly bool restrictSize;
/// <summary>
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///
/// </summary>
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/// <param name="name">The namespace-complete resource name for this skinnable element.</param>
/// <param name="defaultImplementation">A function to create the default skin implementation of this element.</param>
/// <param name="fallback">Whther to fallback to the default implementation when a custom skin is specified but not implementation is present.</param>
/// <param name="restrictSize">Whether a user-skin drawable should be limited to the size of our parent.</param>
public SkinnableDrawable(string name, Func<string, T> defaultImplementation, bool fallback = true, bool restrictSize = true) : base(fallback)
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{
componentName = name;
createDefault = defaultImplementation;
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this.restrictSize = restrictSize;
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RelativeSizeAxes = Axes.Both;
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}
protected override void SkinChanged(Skin skin, bool allowFallback)
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{
var drawable = skin.GetDrawableComponent(componentName);
if (drawable != null)
{
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if (restrictSize)
{
drawable.RelativeSizeAxes = Axes.Both;
drawable.Size = Vector2.One;
drawable.FillMode = FillMode.Fit;
}
}
else if (allowFallback)
drawable = createDefault(componentName);
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if (drawable != null)
{
drawable.Origin = Anchor.Centre;
drawable.Anchor = Anchor.Centre;
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InternalChild = drawable;
}
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else
ClearInternal();
}
}
}