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osu-lazer/osu.Game/Overlays/Direct/PlayButton.cs

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// 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.
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using osu.Framework.Allocation;
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using osu.Framework.Bindables;
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using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Framework.Graphics.Sprites;
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using osu.Framework.Input.Events;
using osu.Game.Audio;
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using osu.Game.Beatmaps;
using osu.Game.Graphics;
using osu.Game.Graphics.UserInterface;
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using osuTK;
using osuTK.Graphics;
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namespace osu.Game.Overlays.Direct
{
public class PlayButton : Container
{
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public readonly BindableBool Playing = new BindableBool();
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public PreviewTrack Preview { get; private set; }
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private BeatmapSetInfo beatmapSet;
public BeatmapSetInfo BeatmapSet
{
get => beatmapSet;
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set
{
if (value == beatmapSet) return;
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beatmapSet = value;
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Preview?.Stop();
Preview?.Expire();
Preview = null;
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Playing.Value = false;
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}
}
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private Color4 hoverColour;
private readonly SpriteIcon icon;
private readonly LoadingAnimation loadingAnimation;
private const float transition_duration = 500;
private bool loading
{
set
{
if (value)
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{
icon.FadeTo(0.5f, transition_duration, Easing.OutQuint);
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loadingAnimation.Show();
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}
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else
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{
icon.FadeTo(1, transition_duration, Easing.OutQuint);
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loadingAnimation.Hide();
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}
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}
}
public PlayButton(BeatmapSetInfo setInfo = null)
{
BeatmapSet = setInfo;
AddRange(new Drawable[]
{
icon = new SpriteIcon
{
Anchor = Anchor.Centre,
Origin = Anchor.Centre,
FillMode = FillMode.Fit,
RelativeSizeAxes = Axes.Both,
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Icon = FontAwesome.Solid.Play,
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},
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loadingAnimation = new LoadingAnimation
{
Size = new Vector2(15),
},
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});
Playing.ValueChanged += playingStateChanged;
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}
private PreviewTrackManager previewTrackManager;
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[BackgroundDependencyLoader]
private void load(OsuColour colour, PreviewTrackManager previewTrackManager)
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{
this.previewTrackManager = previewTrackManager;
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hoverColour = colour.Yellow;
}
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protected override bool OnClick(ClickEvent e)
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{
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Playing.Toggle();
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return true;
}
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protected override bool OnHover(HoverEvent e)
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{
icon.FadeColour(hoverColour, 120, Easing.InOutQuint);
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return base.OnHover(e);
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}
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protected override void OnHoverLost(HoverLostEvent e)
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{
if (!Playing.Value)
icon.FadeColour(Color4.White, 120, Easing.InOutQuint);
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base.OnHoverLost(e);
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}
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private void playingStateChanged(ValueChangedEvent<bool> e)
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{
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icon.Icon = e.NewValue ? FontAwesome.Solid.Stop : FontAwesome.Solid.Play;
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icon.FadeColour(e.NewValue || IsHovered ? hoverColour : Color4.White, 120, Easing.InOutQuint);
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if (e.NewValue)
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{
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if (BeatmapSet == null)
{
Playing.Value = false;
return;
}
if (Preview != null)
{
attemptStart();
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return;
}
loading = true;
LoadComponentAsync(Preview = previewTrackManager.Get(beatmapSet), preview =>
{
// beatmapset may have changed.
if (Preview != preview)
return;
AddInternal(preview);
loading = false;
preview.Stopped += () => Playing.Value = false;
// user may have changed their mind.
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if (Playing.Value)
attemptStart();
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});
}
else
{
Preview?.Stop();
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loading = false;
}
}
private void attemptStart()
{
if (Preview?.Start() != true)
Playing.Value = false;
}
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protected override void Dispose(bool isDisposing)
{
base.Dispose(isDisposing);
Playing.Value = false;
}
}
}