mirror of
https://github.com/ppy/osu
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113 lines
3.6 KiB
C#
113 lines
3.6 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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#nullable disable
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using osu.Framework.Graphics;
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using osu.Framework.Graphics.Containers;
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using osu.Framework.Graphics.Shapes;
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using osu.Framework.Graphics.Sprites;
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using osuTK;
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using osuTK.Graphics;
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namespace osu.Game.Graphics.UserInterface
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{
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/// <summary>
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/// A loading spinner.
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/// </summary>
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public class LoadingSpinner : VisibilityContainer
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{
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private readonly SpriteIcon spinner;
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protected override bool StartHidden => true;
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protected Container MainContents;
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public const float TRANSITION_DURATION = 500;
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private const float spin_duration = 900;
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/// <summary>
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/// Constuct a new loading spinner.
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/// </summary>
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/// <param name="withBox">Whether the spinner should have a surrounding black box for visibility.</param>
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/// <param name="inverted">Whether colours should be inverted (black spinner instead of white).</param>
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public LoadingSpinner(bool withBox = false, bool inverted = false)
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{
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Size = new Vector2(60);
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Anchor = Anchor.Centre;
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Origin = Anchor.Centre;
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Child = MainContents = new Container
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{
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RelativeSizeAxes = Axes.Both,
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Masking = true,
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CornerRadius = 20,
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Anchor = Anchor.Centre,
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Origin = Anchor.Centre,
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Children = new Drawable[]
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{
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new Box
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{
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Colour = inverted ? Color4.White : Color4.Black,
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RelativeSizeAxes = Axes.Both,
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Alpha = withBox ? 0.7f : 0
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},
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spinner = new SpriteIcon
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{
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Anchor = Anchor.Centre,
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Origin = Anchor.Centre,
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Colour = inverted ? Color4.Black : Color4.White,
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Scale = new Vector2(withBox ? 0.6f : 1),
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RelativeSizeAxes = Axes.Both,
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Icon = FontAwesome.Solid.CircleNotch
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}
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}
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};
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}
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protected override void LoadComplete()
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{
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base.LoadComplete();
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rotate();
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}
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protected override void Update()
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{
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base.Update();
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MainContents.CornerRadius = MainContents.DrawWidth / 4;
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}
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protected override void PopIn()
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{
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if (Alpha < 0.5f)
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// reset animation if the user can't see us.
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rotate();
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MainContents.ScaleTo(1, TRANSITION_DURATION, Easing.OutQuint);
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this.FadeIn(TRANSITION_DURATION * 2, Easing.OutQuint);
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}
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protected override void PopOut()
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{
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MainContents.ScaleTo(0.8f, TRANSITION_DURATION / 2, Easing.In);
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this.FadeOut(TRANSITION_DURATION, Easing.OutQuint);
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}
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private void rotate()
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{
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spinner.Spin(spin_duration * 3.5f, RotationDirection.Clockwise);
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MainContents.RotateTo(0).Then()
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.RotateTo(90, spin_duration, Easing.InOutQuart).Then()
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.RotateTo(180, spin_duration, Easing.InOutQuart).Then()
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.RotateTo(270, spin_duration, Easing.InOutQuart).Then()
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.RotateTo(360, spin_duration, Easing.InOutQuart).Then()
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.Loop();
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}
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}
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}
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