mirror of
https://github.com/ppy/osu.git
synced 2024-11-17 00:33:21 +08:00
40 lines
1.8 KiB
C#
40 lines
1.8 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 System.Collections.Generic;
|
|
|
|
namespace osu.Game.Skinning
|
|
{
|
|
/// <summary>
|
|
/// An abstract skin implementation, whose primary purpose is to properly handle component fallback across multiple layers of skins (e.g.: beatmap skin, user skin, default skin).
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// Common usage is to do an initial lookup via <see cref="FindProvider"/>, and use the returned <see cref="ISkin"/>
|
|
/// to do further lookups for related components.
|
|
///
|
|
/// The initial lookup is used to lock consecutive lookups to the same underlying skin source (as to not get some elements
|
|
/// from one skin and others from another, which would be the case if using <see cref="ISkin"/> methods like
|
|
/// <see cref="ISkin.GetSample"/> directly).
|
|
/// </remarks>
|
|
public interface ISkinSource : ISkin
|
|
{
|
|
/// <summary>
|
|
/// Fired whenever a source change occurs, signalling that consumers should re-query as required.
|
|
/// </summary>
|
|
event Action SourceChanged;
|
|
|
|
/// <summary>
|
|
/// Find the first (if any) skin that can fulfill the lookup.
|
|
/// This should be used for cases where subsequent lookups (for related components) need to occur on the same skin.
|
|
/// </summary>
|
|
/// <returns>The skin to be used for subsequent lookups, or <c>null</c> if none is available.</returns>
|
|
ISkin? FindProvider(Func<ISkin, bool> lookupFunction);
|
|
|
|
/// <summary>
|
|
/// Retrieve all sources available for lookup, with highest priority source first.
|
|
/// </summary>
|
|
IEnumerable<ISkin> AllSources { get; }
|
|
}
|
|
}
|