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osu-lazer/osu.Game/Overlays/RestoreDefaultValueButton.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 osu.Framework.Allocation;
using osu.Framework.Bindables;
using osuTK.Graphics;
using osu.Framework.Extensions.Color4Extensions;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Colour;
using osu.Framework.Graphics.Cursor;
using osu.Framework.Graphics.Effects;
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using osu.Framework.Graphics.UserInterface;
using osu.Framework.Input.Events;
using osu.Framework.Localisation;
using osu.Game.Graphics;
using osu.Game.Graphics.UserInterface;
namespace osu.Game.Overlays
{
public class RestoreDefaultValueButton<T> : OsuButton, IHasTooltip, IHasCurrentValue<T>
{
public override bool IsPresent => base.IsPresent || Scheduler.HasPendingTasks;
// this is done to ensure a click on this button doesn't trigger focus on a parent element which contains the button.
public override bool AcceptsFocus => true;
// this is intentionally not using BindableWithCurrent, as it can use the wrong IsDefault implementation when passed a BindableNumber.
// using GetBoundCopy() ensures that the received bindable is of the exact same type as the source bindable and uses the proper IsDefault implementation.
private Bindable<T> current;
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public Bindable<T> Current
{
get => current;
set
{
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current?.UnbindAll();
current = value.GetBoundCopy();
current.ValueChanged += _ => UpdateState();
current.DefaultChanged += _ => UpdateState();
current.DisabledChanged += _ => UpdateState();
if (IsLoaded)
UpdateState();
}
}
private bool hovering;
public RestoreDefaultValueButton()
{
Height = 1;
RelativeSizeAxes = Axes.Y;
Width = SettingsPanel.CONTENT_MARGINS;
}
[BackgroundDependencyLoader]
private void load(OsuColour colour)
{
BackgroundColour = colour.Yellow;
Content.Width = 0.33f;
Content.CornerRadius = 3;
Content.EdgeEffect = new EdgeEffectParameters
{
Colour = BackgroundColour.Opacity(0.1f),
Type = EdgeEffectType.Glow,
Radius = 2,
};
Padding = new MarginPadding { Vertical = 1.5f };
Alpha = 0f;
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Action += () =>
{
if (!current.Disabled)
current.SetDefault();
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};
}
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protected override void LoadComplete()
{
base.LoadComplete();
// avoid unnecessary transforms on first display.
Alpha = currentAlpha;
Background.Colour = currentColour;
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}
public LocalisableString TooltipText => "revert to default";
protected override bool OnHover(HoverEvent e)
{
hovering = true;
UpdateState();
return false;
}
protected override void OnHoverLost(HoverLostEvent e)
{
hovering = false;
UpdateState();
}
public void UpdateState() => Scheduler.AddOnce(updateState);
private float currentAlpha => current.IsDefault ? 0f : hovering && !current.Disabled ? 1f : 0.65f;
private ColourInfo currentColour => current.Disabled ? Color4.Gray : BackgroundColour;
private void updateState()
{
if (current == null)
return;
this.FadeTo(currentAlpha, 200, Easing.OutQuint);
Background.FadeColour(currentColour, 200, Easing.OutQuint);
}
}
}