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osu-lazer/osu.Game/Screens/Edit/WaveformOpacityMenuItem.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.
using System.Collections.Generic;
using osu.Framework.Bindables;
using osu.Framework.Graphics.UserInterface;
using osu.Game.Graphics.UserInterface;
namespace osu.Game.Screens.Edit
{
internal class WaveformOpacityMenuItem : MenuItem
{
private readonly Bindable<float> waveformOpacity;
private readonly Dictionary<float, TernaryStateRadioMenuItem> menuItemLookup = new Dictionary<float, TernaryStateRadioMenuItem>();
public WaveformOpacityMenuItem(Bindable<float> waveformOpacity)
: base("Waveform opacity")
{
Items = new[]
{
createMenuItem(0.25f),
createMenuItem(0.5f),
createMenuItem(0.75f),
createMenuItem(1f),
};
this.waveformOpacity = waveformOpacity;
waveformOpacity.BindValueChanged(opacity =>
{
foreach (var kvp in menuItemLookup)
kvp.Value.State.Value = kvp.Key == opacity.NewValue ? TernaryState.True : TernaryState.False;
}, true);
}
private TernaryStateRadioMenuItem createMenuItem(float opacity)
{
var item = new TernaryStateRadioMenuItem($"{opacity * 100}%", MenuItemType.Standard, _ => updateOpacity(opacity));
menuItemLookup[opacity] = item;
return item;
}
private void updateOpacity(float opacity) => waveformOpacity.Value = opacity;
}
}