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osu-lazer/osu.Game/Overlays/BeatmapSet/Buttons/PlayButton.cs
2022-06-17 16:37:17 +09:00

178 lines
5.2 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.
#nullable disable
using osu.Framework.Allocation;
using osu.Framework.Bindables;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Framework.Graphics.Sprites;
using osu.Framework.Input.Events;
using osu.Game.Audio;
using osu.Game.Graphics;
using osu.Game.Graphics.UserInterface;
using osu.Game.Online.API.Requests.Responses;
using osuTK;
using osuTK.Graphics;
namespace osu.Game.Overlays.BeatmapSet.Buttons
{
public class PlayButton : Container
{
public IBindable<bool> Playing => playing;
private readonly BindableBool playing = new BindableBool();
public PreviewTrack Preview { get; private set; }
private APIBeatmapSet beatmapSet;
public APIBeatmapSet BeatmapSet
{
get => beatmapSet;
set
{
if (value == beatmapSet) return;
beatmapSet = value;
Preview?.Stop();
Preview?.Expire();
Preview = null;
playing.Value = false;
}
}
private Color4 hoverColour;
private readonly SpriteIcon icon;
private readonly LoadingSpinner loadingSpinner;
private const float transition_duration = 500;
private bool loading
{
set
{
if (value)
{
icon.FadeTo(0.5f, transition_duration, Easing.OutQuint);
loadingSpinner.Show();
}
else
{
icon.FadeTo(1, transition_duration, Easing.OutQuint);
loadingSpinner.Hide();
}
}
}
public PlayButton(APIBeatmapSet setInfo = null)
{
BeatmapSet = setInfo;
AddRange(new Drawable[]
{
icon = new SpriteIcon
{
Anchor = Anchor.Centre,
Origin = Anchor.Centre,
FillMode = FillMode.Fit,
RelativeSizeAxes = Axes.Both,
Icon = FontAwesome.Solid.Play,
},
loadingSpinner = new LoadingSpinner
{
Size = new Vector2(15),
},
});
playing.ValueChanged += playingStateChanged;
}
[Resolved]
private PreviewTrackManager previewTrackManager { get; set; }
[BackgroundDependencyLoader]
private void load(OsuColour colour)
{
hoverColour = colour.Yellow;
}
protected override bool OnClick(ClickEvent e)
{
playing.Toggle();
return true;
}
protected override bool OnHover(HoverEvent e)
{
icon.FadeColour(hoverColour, 120, Easing.InOutQuint);
return base.OnHover(e);
}
protected override void OnHoverLost(HoverLostEvent e)
{
if (!playing.Value)
icon.FadeColour(Color4.White, 120, Easing.InOutQuint);
base.OnHoverLost(e);
}
private void playingStateChanged(ValueChangedEvent<bool> e)
{
icon.Icon = e.NewValue ? FontAwesome.Solid.Stop : FontAwesome.Solid.Play;
icon.FadeColour(e.NewValue || IsHovered ? hoverColour : Color4.White, 120, Easing.InOutQuint);
if (e.NewValue)
{
if (BeatmapSet == null)
{
playing.Value = false;
return;
}
if (Preview != null)
{
attemptStart();
return;
}
loading = true;
LoadComponentAsync(Preview = previewTrackManager.Get(beatmapSet), preview =>
{
// Make sure that we schedule to after the next audio frame to fix crashes in single-threaded execution.
// See: https://github.com/ppy/osu-framework/issues/4692
Schedule(() =>
{
// beatmapset may have changed.
if (Preview != preview)
return;
AddInternal(preview);
loading = false;
// make sure that the update of value of Playing (and the ensuing value change callbacks)
// are marshaled back to the update thread.
preview.Stopped += () => Schedule(() => playing.Value = false);
// user may have changed their mind.
if (playing.Value)
attemptStart();
});
});
}
else
{
Preview?.Stop();
loading = false;
}
}
private void attemptStart()
{
if (Preview?.Start() != true)
playing.Value = false;
}
}
}