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https://github.com/ppy/osu
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39 lines
1.7 KiB
C#
39 lines
1.7 KiB
C#
// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
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// See the LICENCE file in the repository root for full licence text.
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using osuTK.Graphics;
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using osu.Framework.Graphics;
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using osu.Framework.Graphics.Transforms;
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namespace osu.Game.Graphics
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{
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/// <summary>
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/// A type of drawable that has an accent colour.
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/// The accent colour is used to colorize various objects inside a drawable
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/// without colorizing the drawable itself.
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/// </summary>
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public interface IHasAccentColour : IDrawable
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{
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Color4 AccentColour { get; set; }
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}
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public static class AccentedColourExtensions
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{
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/// <summary>
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/// Smoothly adjusts <see cref="IHasAccentColour.AccentColour"/> over time.
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/// </summary>
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/// <returns>A <see cref="TransformSequence{T}"/> to which further transforms can be added.</returns>
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public static TransformSequence<T> FadeAccent<T>(this T accentedDrawable, Color4 newColour, double duration = 0, Easing easing = Easing.None)
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where T : IHasAccentColour
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=> accentedDrawable.TransformTo(nameof(accentedDrawable.AccentColour), newColour, duration, easing);
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/// <summary>
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/// Smoothly adjusts <see cref="IHasAccentColour.AccentColour"/> over time.
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/// </summary>
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/// <returns>A <see cref="TransformSequence{T}"/> to which further transforms can be added.</returns>
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public static TransformSequence<T> FadeAccent<T>(this TransformSequence<T> t, Color4 newColour, double duration = 0, Easing easing = Easing.None)
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where T : Drawable, IHasAccentColour
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=> t.Append(o => o.FadeAccent(newColour, duration, easing));
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}
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}
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