Implement HeaderFlag component for rankings overlay

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

@@ -0,0 +1,55 @@
+// 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.Graphics.Sprites;
+using osu.Game.Graphics;
+using osu.Game.Overlays.Rankings;
+using osu.Game.Users;
+using osuTK;
+
+namespace osu.Game.Tests.Visual.Online
+{
+    public class TestSceneRankingsHeaderFlag : OsuTestScene
+    {
+        public override IReadOnlyList<Type> RequiredTypes => new[]
+        {
+            typeof(HeaderFlag),
+        };
+
+        public TestSceneRankingsHeaderFlag()
+        {
+            HeaderFlag flag;
+            SpriteText text;
+
+            AddRange(new Drawable[]
+            {
+                flag = new HeaderFlag
+                {
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                    Size = new Vector2(30, 20),
+                    Country = new Country
+                    {
+                        FlagName = "BY",
+                        FullName = "Belarus"
+                    }
+                },
+                text = new SpriteText
+                {
+                    Anchor = Anchor.TopCentre,
+                    Origin = Anchor.TopCentre,
+                    Text = "Invoked",
+                    Font = OsuFont.GetFont(size: 30),
+                    Alpha = 0,
+                }
+            });
+
+            flag.Action += () => text.FadeIn().Then().FadeOut(1000, Easing.OutQuint);
+
+            AddStep("Trigger click", () => flag.Click());
+        }
+    }
+}

osu.Game/Overlays/Rankings/HeaderFlag.cs

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+// 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;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Shapes;
+using osu.Framework.Graphics.Sprites;
+using osu.Game.Users.Drawables;
+using osuTK.Graphics;
+using osuTK;
+using osu.Framework.Input.Events;
+using osu.Framework.Extensions.Color4Extensions;
+using System;
+
+namespace osu.Game.Overlays.Rankings
+{
+    public class HeaderFlag : UpdateableFlag
+    {
+        private const int duration = 200;
+
+        public Action Action;
+
+        private readonly Container hoverContainer;
+
+        public HeaderFlag()
+        {
+            AddInternal(hoverContainer = new Container
+            {
+                Alpha = 0,
+                Depth = -1,
+                RelativeSizeAxes = Axes.Both,
+                Children = new Drawable[]
+                {
+                    new SpriteIcon
+                    {
+                        Anchor = Anchor.Centre,
+                        Origin = Anchor.Centre,
+                        Size = new Vector2(15),
+                        Icon = FontAwesome.Solid.Times,
+                    },
+                    new Box
+                    {
+                        RelativeSizeAxes = Axes.Both,
+                        Colour = Color4.Black.Opacity(100),
+                    }
+                }
+            });
+        }
+
+        protected override bool OnHover(HoverEvent e)
+        {
+            hoverContainer.FadeIn(duration, Easing.OutQuint);
+            return base.OnHover(e);
+        }
+
+        protected override void OnHoverLost(HoverLostEvent e)
+        {
+            base.OnHoverLost(e);
+            hoverContainer.FadeOut(duration, Easing.OutQuint);
+        }
+
+        protected override bool OnClick(ClickEvent e)
+        {
+            Action?.Invoke();
+            return base.OnClick(e);
+        }
+    }
+}