Merge pull request #30098 from bdach/editor/setup-screen-palette

Implement "form" colour palette control

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

@@ -105,6 +105,17 @@ namespace osu.Game.Tests.Visual.UserInterface
                             Caption = "Audio file",
                             PlaceholderText = "Select an audio file",
                         },
+                        new FormColourPalette
+                        {
+                            Caption = "Combo colours",
+                            Colours =
+                            {
+                                Colour4.Red,
+                                Colour4.Green,
+                                Colour4.Blue,
+                                Colour4.Yellow,
+                            }
+                        },
                     },
                 },
             }

osu.Game/Graphics/UserInterfaceV2/FormColourPalette.cs

@@ -0,0 +1,226 @@
+// 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;
+using System.Collections.Specialized;
+using osu.Framework.Allocation;
+using osu.Framework.Bindables;
+using osu.Framework.Extensions;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Cursor;
+using osu.Framework.Graphics.Shapes;
+using osu.Framework.Graphics.UserInterface;
+using osu.Framework.Input.Events;
+using osu.Framework.Localisation;
+using osu.Game.Graphics.Containers;
+using osu.Game.Graphics.Sprites;
+using osu.Game.Graphics.UserInterface;
+using osu.Game.Overlays;
+using osu.Game.Resources.Localisation.Web;
+using osuTK;
+
+namespace osu.Game.Graphics.UserInterfaceV2
+{
+    public partial class FormColourPalette : CompositeDrawable
+    {
+        public BindableList<Colour4> Colours { get; } = new BindableList<Colour4>();
+
+        public LocalisableString Caption { get; init; }
+        public LocalisableString HintText { get; init; }
+
+        private Box background = null!;
+        private FormFieldCaption caption = null!;
+        private FillFlowContainer flow = null!;
+
+        [Resolved]
+        private OverlayColourProvider colourProvider { get; set; } = null!;
+
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            RelativeSizeAxes = Axes.X;
+            AutoSizeAxes = Axes.Y;
+
+            Masking = true;
+            CornerRadius = 5;
+
+            RoundedButton button;
+
+            InternalChildren = new Drawable[]
+            {
+                background = new Box
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    Colour = colourProvider.Background5,
+                },
+                new FillFlowContainer
+                {
+                    RelativeSizeAxes = Axes.X,
+                    AutoSizeAxes = Axes.Y,
+                    Padding = new MarginPadding(9),
+                    Spacing = new Vector2(7),
+                    Direction = FillDirection.Vertical,
+                    Children = new Drawable[]
+                    {
+                        caption = new FormFieldCaption
+                        {
+                            Caption = Caption,
+                            TooltipText = HintText,
+                        },
+                        flow = new FillFlowContainer
+                        {
+                            RelativeSizeAxes = Axes.X,
+                            AutoSizeAxes = Axes.Y,
+                            Direction = FillDirection.Full,
+                            Spacing = new Vector2(5),
+                            Child = button = new RoundedButton
+                            {
+                                Action = () => Colours.Add(Colour4.White),
+                                Size = new Vector2(70, 25),
+                                Text = "+",
+                            }
+                        }
+                    },
+                },
+            };
+
+            flow.SetLayoutPosition(button, float.MaxValue);
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            Colours.BindCollectionChanged((_, args) =>
+            {
+                if (args.Action != NotifyCollectionChangedAction.Replace)
+                    updateColours();
+            }, true);
+            updateState();
+        }
+
+        protected override bool OnHover(HoverEvent e)
+        {
+            updateState();
+            return true;
+        }
+
+        protected override void OnHoverLost(HoverLostEvent e)
+        {
+            base.OnHoverLost(e);
+            updateState();
+        }
+
+        private void updateState()
+        {
+            background.Colour = colourProvider.Background5;
+            caption.Colour = colourProvider.Content2;
+
+            BorderThickness = IsHovered ? 2 : 0;
+
+            if (IsHovered)
+                BorderColour = colourProvider.Light4;
+        }
+
+        private void updateColours()
+        {
+            flow.RemoveAll(d => d is ColourButton, true);
+
+            for (int i = 0; i < Colours.Count; ++i)
+            {
+                // copy to avoid accesses to modified closure.
+                int colourIndex = i;
+                var colourButton = new ColourButton { Current = { Value = Colours[colourIndex] } };
+                colourButton.Current.BindValueChanged(colour => Colours[colourIndex] = colour.NewValue);
+                colourButton.DeleteRequested = () => Colours.RemoveAt(flow.IndexOf(colourButton));
+                flow.Add(colourButton);
+            }
+        }
+
+        private partial class ColourButton : OsuClickableContainer, IHasPopover, IHasContextMenu
+        {
+            public Bindable<Colour4> Current { get; } = new Bindable<Colour4>();
+            public Action? DeleteRequested { get; set; }
+
+            private Box background = null!;
+            private OsuSpriteText hexCode = null!;
+
+            [BackgroundDependencyLoader]
+            private void load()
+            {
+                Size = new Vector2(70, 25);
+
+                Masking = true;
+                CornerRadius = 12.5f;
+                Action = this.ShowPopover;
+
+                Children = new Drawable[]
+                {
+                    background = new Box
+                    {
+                        RelativeSizeAxes = Axes.Both,
+                    },
+                    hexCode = new OsuSpriteText
+                    {
+                        Anchor = Anchor.Centre,
+                        Origin = Anchor.Centre,
+                    },
+                };
+            }
+
+            protected override void LoadComplete()
+            {
+                base.LoadComplete();
+
+                Current.BindValueChanged(_ => updateState(), true);
+            }
+
+            public Popover GetPopover() => new ColourPickerPopover
+            {
+                Current = { BindTarget = Current }
+            };
+
+            public MenuItem[] ContextMenuItems => new MenuItem[]
+            {
+                new OsuMenuItem(CommonStrings.ButtonsDelete, MenuItemType.Destructive, () => DeleteRequested?.Invoke())
+            };
+
+            private void updateState()
+            {
+                background.Colour = Current.Value;
+                hexCode.Text = Current.Value.ToHex();
+                hexCode.Colour = OsuColour.ForegroundTextColourFor(Current.Value);
+            }
+        }
+
+        private partial class ColourPickerPopover : OsuPopover, IHasCurrentValue<Colour4>
+        {
+            public Bindable<Colour4> Current
+            {
+                get => current.Current;
+                set => current.Current = value;
+            }
+
+            private readonly BindableWithCurrent<Colour4> current = new BindableWithCurrent<Colour4>();
+
+            public ColourPickerPopover()
+                : base(false)
+            {
+            }
+
+            [BackgroundDependencyLoader]
+            private void load(OverlayColourProvider colourProvider)
+            {
+                Child = new OsuColourPicker
+                {
+                    Current = { BindTarget = Current }
+                };
+
+                Body.BorderThickness = 2;
+                Body.BorderColour = colourProvider.Highlight1;
+                Content.Padding = new MarginPadding(2);
+            }
+        }
+    }
+}