Add ability to revert slider settings to default when double-clicking nub

osu.Game.Tests/Visual/UserInterface/TestSceneRoundedSliderBar.cs

@@ -0,0 +1,59 @@
+// 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.Linq;
+using NUnit.Framework;
+using osu.Framework.Allocation;
+using osu.Framework.Bindables;
+using osu.Framework.Graphics;
+using osu.Framework.Testing;
+using osu.Game.Graphics.UserInterface;
+using osu.Game.Overlays;
+using osuTK.Input;
+
+namespace osu.Game.Tests.Visual.UserInterface
+{
+    public partial class TestSceneRoundedSliderBar : OsuManualInputManagerTestScene
+    {
+        [Cached]
+        private OverlayColourProvider colourProvider { get; set; } = new OverlayColourProvider(OverlayColourScheme.Purple);
+
+        private readonly BindableDouble current = new BindableDouble(5)
+        {
+            Precision = 0.1f,
+            MinValue = 0,
+            MaxValue = 15
+        };
+
+        private RoundedSliderBar<double> slider = null!;
+
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            Child = slider = new RoundedSliderBar<double>
+            {
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                Current = current,
+                RelativeSizeAxes = Axes.X,
+                Width = 0.4f
+            };
+        }
+
+        [Test]
+        public void TestNubDoubleClickRevertToDefault()
+        {
+            AddStep("set slider to 1", () => slider.Current.Value = 1);
+
+            AddStep("move mouse to nub", () => InputManager.MoveMouseTo(slider.ChildrenOfType<Nub>().Single()));
+
+            AddStep("double click nub", () =>
+            {
+                InputManager.Click(MouseButton.Left);
+                InputManager.Click(MouseButton.Left);
+            });
+
+            AddAssert("slider is default", () => slider.Current.IsDefault);
+        }
+    }
+}

osu.Game.Tests/Visual/UserInterface/TestSceneShearedSliderBar.cs

@@ -1,15 +1,19 @@
 // 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.Linq;
+using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
+using osu.Framework.Testing;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
+using osuTK.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
-    public partial class TestSceneShearedSliderBar : OsuTestScene
+    public partial class TestSceneShearedSliderBar : OsuManualInputManagerTestScene
     {
         [Cached]
         private OverlayColourProvider colourProvider { get; set; } = new OverlayColourProvider(OverlayColourScheme.Purple);
@@ -21,10 +25,12 @@ public partial class TestSceneShearedSliderBar : OsuTestScene
             MaxValue = 15
         };
 
+        private ShearedSliderBar<double> slider = null!;
+
         [BackgroundDependencyLoader]
         private void load()
         {
-            Child = new ShearedSliderBar<double>
+            Child = slider = new ShearedSliderBar<double>
             {
                 Anchor = Anchor.Centre,
                 Origin = Anchor.Centre,
@@ -33,5 +39,21 @@ private void load()
                 Width = 0.4f
             };
         }
+
+        [Test]
+        public void TestNubDoubleClickRevertToDefault()
+        {
+            AddStep("set slider to 1", () => slider.Current.Value = 1);
+
+            AddStep("move mouse to nub", () => InputManager.MoveMouseTo(slider.ChildrenOfType<ShearedNub>().Single()));
+
+            AddStep("double click nub", () =>
+            {
+                InputManager.Click(MouseButton.Left);
+                InputManager.Click(MouseButton.Left);
+            });
+
+            AddAssert("slider is default", () => slider.Current.IsDefault);
+        }
     }
 }

osu.Game/Graphics/UserInterface/RoundedSliderBar.cs

@@ -93,11 +93,12 @@ public RoundedSliderBar()
                 nubContainer = new Container
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Child = Nub = new Nub
+                    Child = Nub = new SliderNub
                     {
                         Origin = Anchor.TopCentre,
                         RelativePositionAxes = Axes.X,
-                        Current = { Value = true }
+                        Current = { Value = true },
+                        OnDoubleClicked = () => Current.SetDefault(),
                     },
                 },
                 hoverClickSounds = new HoverClickSounds()
@@ -166,5 +167,18 @@ protected override void UpdateValue(float value)
         {
             Nub.MoveToX(value, 250, Easing.OutQuint);
         }
+
+        public partial class SliderNub : Nub
+        {
+            public Action? OnDoubleClicked { get; init; }
+
+            protected override bool OnClick(ClickEvent e) => true;
+
+            protected override bool OnDoubleClick(DoubleClickEvent e)
+            {
+                OnDoubleClicked?.Invoke();
+                return true;
+            }
+        }
     }
 }

osu.Game/Graphics/UserInterface/ShearedNub.cs

@@ -10,6 +10,7 @@
 using osu.Framework.Graphics.Effects;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.UserInterface;
+using osu.Framework.Input.Events;
 using osu.Game.Overlays;
 using osuTK;
 using osuTK.Graphics;
@@ -18,6 +19,8 @@ namespace osu.Game.Graphics.UserInterface
 {
     public partial class ShearedNub : Container, IHasCurrentValue<bool>, IHasAccentColour
     {
+        public Action? OnDoubleClicked { get; init; }
+
         protected const float BORDER_WIDTH = 3;
 
         public const int HEIGHT = 30;
@@ -179,5 +182,13 @@ private void onCurrentValueChanged(ValueChangedEvent<bool> filled)
                 main.TransformTo(nameof(BorderThickness), BORDER_WIDTH, duration, Easing.OutQuint);
             }
         }
+
+        protected override bool OnClick(ClickEvent e) => true;
+
+        protected override bool OnDoubleClick(DoubleClickEvent e)
+        {
+            OnDoubleClicked?.Invoke();
+            return true;
+        }
     }
 }

osu.Game/Graphics/UserInterface/ShearedSliderBar.cs

@@ -100,7 +100,8 @@ public ShearedSliderBar()
                         X = -SHEAR.X * HEIGHT / 2f,
                         Origin = Anchor.TopCentre,
                         RelativePositionAxes = Axes.X,
-                        Current = { Value = true }
+                        Current = { Value = true },
+                        OnDoubleClicked = () => Current.SetDefault(),
                     },
                 },
                 hoverClickSounds = new HoverClickSounds()