Implement TotalCommentsCounter component for CommentsContainer (#6867)

Implement TotalCommentsCounter component for CommentsContainer

osu.Game.Tests/Visual/Online/TestSceneTotalCommentsCounter.cs

@@ -0,0 +1,36 @@
+// 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.Graphics;
+using osu.Framework.Bindables;
+using osu.Game.Overlays.Comments;
+using osu.Framework.MathUtils;
+
+namespace osu.Game.Tests.Visual.Online
+{
+    public class TestSceneTotalCommentsCounter : OsuTestScene
+    {
+        public override IReadOnlyList<Type> RequiredTypes => new[]
+        {
+            typeof(TotalCommentsCounter),
+        };
+
+        public TestSceneTotalCommentsCounter()
+        {
+            var count = new BindableInt();
+
+            Add(new TotalCommentsCounter
+            {
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                Current = { BindTarget = count }
+            });
+
+            AddStep(@"Set 100", () => count.Value = 100);
+            AddStep(@"Set 0", () => count.Value = 0);
+            AddStep(@"Set random", () => count.Value = RNG.Next(0, int.MaxValue));
+        }
+    }
+}

osu.Game/Overlays/Comments/TotalCommentsCounter.cs

@@ -0,0 +1,80 @@
+// 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.Graphics.Containers;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Shapes;
+using osu.Game.Graphics;
+using osu.Framework.Graphics.Sprites;
+using osuTK;
+using osu.Framework.Allocation;
+using osu.Framework.Bindables;
+
+namespace osu.Game.Overlays.Comments
+{
+    public class TotalCommentsCounter : CompositeDrawable
+    {
+        public readonly BindableInt Current = new BindableInt();
+
+        private readonly SpriteText counter;
+
+        public TotalCommentsCounter()
+        {
+            RelativeSizeAxes = Axes.X;
+            Height = 50;
+            AddInternal(new FillFlowContainer
+            {
+                Anchor = Anchor.CentreLeft,
+                Origin = Anchor.CentreLeft,
+                AutoSizeAxes = Axes.Both,
+                Direction = FillDirection.Horizontal,
+                Margin = new MarginPadding { Left = 50 },
+                Spacing = new Vector2(5, 0),
+                Children = new Drawable[]
+                {
+                    new SpriteText
+                    {
+                        Anchor = Anchor.CentreLeft,
+                        Origin = Anchor.CentreLeft,
+                        Font = OsuFont.GetFont(size: 20, italics: true),
+                        Text = @"Comments"
+                    },
+                    new CircularContainer
+                    {
+                        Anchor = Anchor.CentreLeft,
+                        Origin = Anchor.CentreLeft,
+                        AutoSizeAxes = Axes.Both,
+                        Masking = true,
+                        Children = new Drawable[]
+                        {
+                            new Box
+                            {
+                                RelativeSizeAxes = Axes.Both,
+                                Colour = OsuColour.Gray(0.05f)
+                            },
+                            counter = new SpriteText
+                            {
+                                Anchor = Anchor.Centre,
+                                Origin = Anchor.Centre,
+                                Margin = new MarginPadding { Horizontal = 10, Vertical = 5 },
+                                Font = OsuFont.GetFont(size: 14, weight: FontWeight.Bold)
+                            }
+                        },
+                    }
+                }
+            });
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(OsuColour colours)
+        {
+            counter.Colour = colours.BlueLighter;
+        }
+
+        protected override void LoadComplete()
+        {
+            Current.BindValueChanged(value => counter.Text = value.NewValue.ToString("N0"), true);
+            base.LoadComplete();
+        }
+    }
+}