Implement CancellableCommentEditor

osu.Game/Overlays/Comments/CancellableCommentEditor.cs

@@ -0,0 +1,71 @@
+// 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.Generic;
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Shapes;
+using osu.Game.Graphics;
+using osu.Game.Graphics.Containers;
+using osu.Game.Graphics.Sprites;
+
+namespace osu.Game.Overlays.Comments
+{
+    public abstract class CancellableCommentEditor : CommentEditor
+    {
+        public Action OnCancel;
+
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            ButtonsContainer.Add(new CancelButton
+            {
+                Anchor = Anchor.CentreLeft,
+                Origin = Anchor.CentreLeft,
+                Action = () => OnCancel?.Invoke()
+            });
+        }
+
+        private class CancelButton : OsuHoverContainer
+        {
+            protected override IEnumerable<Drawable> EffectTargets => new[] { background };
+
+            private readonly Box background;
+
+            public CancelButton()
+            {
+                AutoSizeAxes = Axes.Both;
+                Child = new CircularContainer
+                {
+                    Masking = true,
+                    Height = 25,
+                    AutoSizeAxes = Axes.X,
+                    Children = new Drawable[]
+                    {
+                        background = new Box
+                        {
+                            RelativeSizeAxes = Axes.Both
+                        },
+                        new OsuSpriteText
+                        {
+                            Anchor = Anchor.Centre,
+                            Origin = Anchor.Centre,
+                            Font = OsuFont.GetFont(size: 12, weight: FontWeight.Bold),
+                            Margin = new MarginPadding { Horizontal = 20 },
+                            Text = @"Cancel"
+                        }
+                    }
+                };
+            }
+
+            [BackgroundDependencyLoader]
+            private void load(OverlayColourProvider colourProvider)
+            {
+                IdleColour = colourProvider.GetColour(0.5f, 0.45f);
+                HoverColour = colourProvider.GetColour(0.5f, 0.6f);
+            }
+        }
+    }
+}