Implement "form" check box control

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

@@ -6,6 +6,7 @@ using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Cursor;
 using osu.Game.Graphics.Cursor;
 using osu.Game.Graphics.UserInterfaceV2;
+using osu.Game.Localisation;
 using osuTK;
 
 namespace osu.Game.Tests.Visual.UserInterface
@@ -53,9 +54,22 @@ namespace osu.Game.Tests.Visual.UserInterface
                             PlaceholderText = "Mine is 42!",
                             TabbableContentContainer = this,
                         },
+                        new FormCheckBox
+                        {
+                            Caption = EditorSetupStrings.LetterboxDuringBreaks,
+                            HintText = EditorSetupStrings.LetterboxDuringBreaksDescription,
+                            OnText = "Letterbox",
+                            OffText = "Do not letterbox",
+                        },
+                        new FormCheckBox
+                        {
+                            Caption = EditorSetupStrings.LetterboxDuringBreaks,
+                            HintText = EditorSetupStrings.LetterboxDuringBreaksDescription,
+                            Current = { Disabled = true },
+                        },
                     },
                 },
-            },
+            }
         };
     }
 }

osu.Game/Graphics/UserInterfaceV2/FormCheckBox.cs

@@ -0,0 +1,155 @@
+// 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.Audio;
+using osu.Framework.Audio.Sample;
+using osu.Framework.Bindables;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Colour;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Shapes;
+using osu.Framework.Graphics.UserInterface;
+using osu.Framework.Input.Events;
+using osu.Framework.Localisation;
+using osu.Game.Graphics.Sprites;
+using osu.Game.Graphics.UserInterface;
+using osu.Game.Overlays;
+
+namespace osu.Game.Graphics.UserInterfaceV2
+{
+    public partial class FormCheckBox : CompositeDrawable, IHasCurrentValue<bool>
+    {
+        public Bindable<bool> Current
+        {
+            get => current.Current;
+            set => current.Current = value;
+        }
+
+        private readonly BindableWithCurrent<bool> current = new BindableWithCurrent<bool>();
+
+        public LocalisableString Caption { get; init; }
+        public LocalisableString HintText { get; init; }
+        public LocalisableString OnText { get; init; } = "On";
+        public LocalisableString OffText { get; init; } = "Off";
+
+        private Box background = null!;
+        private FormFieldCaption caption = null!;
+        private OsuSpriteText text = null!;
+        private Nub checkbox = null!;
+
+        private Sample? sampleChecked;
+        private Sample? sampleUnchecked;
+
+        [Resolved]
+        private OverlayColourProvider colourProvider { get; set; } = null!;
+
+        [BackgroundDependencyLoader]
+        private void load(AudioManager audio)
+        {
+            RelativeSizeAxes = Axes.X;
+            Height = 50;
+
+            Masking = true;
+            CornerRadius = 5;
+            CornerExponent = 2.5f;
+
+            InternalChildren = new Drawable[]
+            {
+                background = new Box
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    Colour = colourProvider.Background5,
+                },
+                new Container
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    Padding = new MarginPadding(9),
+                    Children = new Drawable[]
+                    {
+                        caption = new FormFieldCaption
+                        {
+                            Caption = Caption,
+                            TooltipText = HintText,
+                            Anchor = Anchor.TopLeft,
+                            Origin = Anchor.TopLeft,
+                        },
+                        text = new OsuSpriteText
+                        {
+                            RelativeSizeAxes = Axes.X,
+                            Anchor = Anchor.BottomLeft,
+                            Origin = Anchor.BottomLeft,
+                        },
+                        checkbox = new Nub
+                        {
+                            Anchor = Anchor.CentreRight,
+                            Origin = Anchor.CentreRight,
+                            Current = Current,
+                        }
+                    },
+                },
+            };
+
+            sampleChecked = audio.Samples.Get(@"UI/check-on");
+            sampleUnchecked = audio.Samples.Get(@"UI/check-off");
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            current.BindValueChanged(_ =>
+            {
+                updateState();
+                playSamples();
+                background.FlashColour(ColourInfo.GradientVertical(colourProvider.Background5, colourProvider.Dark2), 800, Easing.OutQuint);
+            });
+            current.BindDisabledChanged(_ => updateState(), true);
+        }
+
+        private void playSamples()
+        {
+            if (Current.Value)
+                sampleChecked?.Play();
+            else
+                sampleUnchecked?.Play();
+        }
+
+        protected override bool OnHover(HoverEvent e)
+        {
+            updateState();
+            return true;
+        }
+
+        protected override void OnHoverLost(HoverLostEvent e)
+        {
+            base.OnHoverLost(e);
+            updateState();
+        }
+
+        protected override bool OnClick(ClickEvent e)
+        {
+            if (!Current.Disabled)
+                Current.Value = !Current.Value;
+            return true;
+        }
+
+        private void updateState()
+        {
+            background.Colour = Current.Disabled ? colourProvider.Background4 : colourProvider.Background5;
+            caption.Colour = Current.Disabled ? colourProvider.Foreground1 : colourProvider.Content2;
+            checkbox.Colour = Current.Disabled ? colourProvider.Foreground1 : colourProvider.Content1;
+            text.Colour = Current.Disabled ? colourProvider.Foreground1 : colourProvider.Content1;
+
+            text.Text = Current.Value ? OnText : OffText;
+
+            if (!Current.Disabled)
+            {
+                BorderThickness = IsHovered ? 2 : 0;
+
+                if (IsHovered)
+                    BorderColour = colourProvider.Light4;
+            }
+        }
+    }
+}