1
0
mirror of https://github.com/ppy/osu.git synced 2024-12-14 07:42:57 +08:00
osu-lazer/osu.Game/Skinning/SkinnableDrawable.cs
2022-11-27 00:00:27 +09:00

139 lines
4.5 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.Caching;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Animations;
using osuTK;
namespace osu.Game.Skinning
{
/// <summary>
/// A drawable which can be skinned via an <see cref="ISkinSource"/>.
/// </summary>
public partial class SkinnableDrawable : SkinReloadableDrawable
{
/// <summary>
/// The displayed component.
/// </summary>
public Drawable Drawable { get; private set; } = null!;
/// <summary>
/// Whether the drawable component should be centered in available space.
/// Defaults to true.
/// </summary>
public bool CentreComponent = true;
public new Axes AutoSizeAxes
{
get => base.AutoSizeAxes;
set => base.AutoSizeAxes = value;
}
protected readonly ISkinComponentLookup ComponentLookup;
private readonly ConfineMode confineMode;
/// <summary>
/// Create a new skinnable drawable.
/// </summary>
/// <param name="lookup">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="confineMode">How (if at all) the <see cref="Drawable"/> should be resize to fit within our own bounds.</param>
public SkinnableDrawable(ISkinComponentLookup lookup, Func<ISkinComponentLookup, Drawable>? defaultImplementation = null, ConfineMode confineMode = ConfineMode.NoScaling)
: this(lookup, confineMode)
{
createDefault = defaultImplementation;
}
protected SkinnableDrawable(ISkinComponentLookup lookup, ConfineMode confineMode = ConfineMode.NoScaling)
{
ComponentLookup = lookup;
this.confineMode = confineMode;
RelativeSizeAxes = Axes.Both;
}
/// <summary>
/// Seeks to the 0-th frame if the content of this <see cref="SkinnableDrawable"/> is an <see cref="IFramedAnimation"/>.
/// </summary>
public void ResetAnimation() => (Drawable as IFramedAnimation)?.GotoFrame(0);
private readonly Func<ISkinComponentLookup, Drawable>? createDefault;
private readonly Cached scaling = new Cached();
private bool isDefault;
protected virtual Drawable CreateDefault(ISkinComponentLookup lookup) => createDefault?.Invoke(lookup) ?? Empty();
/// <summary>
/// Whether to apply size restrictions (specified via <see cref="confineMode"/>) to the default implementation.
/// </summary>
protected virtual bool ApplySizeRestrictionsToDefault => false;
protected override void SkinChanged(ISkinSource skin)
{
var retrieved = skin.GetDrawableComponent(ComponentLookup);
if (retrieved == null)
{
Drawable = CreateDefault(ComponentLookup);
isDefault = true;
}
else
{
Drawable = retrieved;
isDefault = false;
}
scaling.Invalidate();
if (CentreComponent)
{
Drawable.Origin = Anchor.Centre;
Drawable.Anchor = Anchor.Centre;
}
InternalChild = Drawable;
}
protected override void Update()
{
base.Update();
if (!scaling.IsValid)
{
try
{
if (isDefault && !ApplySizeRestrictionsToDefault) return;
switch (confineMode)
{
case ConfineMode.ScaleToFit:
Drawable.RelativeSizeAxes = Axes.Both;
Drawable.Size = Vector2.One;
Drawable.Scale = Vector2.One;
Drawable.FillMode = FillMode.Fit;
break;
}
}
finally
{
scaling.Validate();
}
}
}
}
public enum ConfineMode
{
/// <summary>
/// Don't apply any scaling. This allows the user element to be of any size, exceeding specified bounds.
/// </summary>
NoScaling,
ScaleToFit,
}
}