Abstract DirectOverlay layout into base class for Social and osu!direct - BrowseOverlay, initial layout of social browser

osu.Game/Graphics/UserInterface/PageTabControl.cs

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+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System;
+using OpenTK;
+using OpenTK.Graphics;
+using osu.Framework.Allocation;
+using osu.Framework.Extensions;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Sprites;
+using osu.Framework.Graphics.UserInterface;
+using osu.Framework.Input;
+using osu.Game.Graphics.Sprites;
+
+namespace osu.Game.Graphics.UserInterface
+{
+    public class PageTabControl<T> : OsuTabControl<T>
+    {
+        protected override TabItem<T> CreateTabItem(T value) => new PageTabItem(value);
+
+        public PageTabControl()
+        {
+            Height = 30;
+        }
+
+        private class PageTabItem : TabItem<T>
+        {
+            private const float transition_duration = 100;
+
+            private readonly Box box;
+
+            public override bool Active
+            {
+                get { return base.Active; }
+                set
+                {
+                    if (Active == value) return;
+
+                    if (value)
+                        slideActive();
+                    else
+                        slideInactive();
+                    base.Active = value;
+                }
+            }
+
+            public PageTabItem(T value) : base(value)
+            {
+                AutoSizeAxes = Axes.X;
+                RelativeSizeAxes = Axes.Y;
+
+                Children = new Drawable[]
+                {
+                    new OsuSpriteText
+                    {
+                        Margin = new MarginPadding { Top = 8, Bottom = 8 },
+                        Origin = Anchor.BottomLeft,
+                        Anchor = Anchor.BottomLeft,
+                        Text = (value as Enum).GetDescription() ?? value.ToString(),
+                        TextSize = 14,
+                        Font = @"Exo2.0-Bold",
+                    },
+                    box = new Box
+                    {
+                        RelativeSizeAxes = Axes.X,
+                        Height = 5,
+                        Scale = new Vector2(1f, 0f),
+                        Colour = Color4.White,
+                        Origin = Anchor.BottomLeft,
+                        Anchor = Anchor.BottomLeft,
+                    },
+                };
+            }
+
+            [BackgroundDependencyLoader]
+            private void load(OsuColour colours)
+            {
+                box.Colour = colours.Yellow;
+            }
+
+            protected override bool OnHover(InputState state)
+            {
+                if (!Active)
+                    slideActive();
+                return true;
+            }
+
+            protected override void OnHoverLost(InputState state)
+            {
+                if (!Active)
+                    slideInactive();
+            }
+
+            private void slideActive()
+            {
+                box.ScaleTo(new Vector2(1f), transition_duration);
+            }
+
+            private void slideInactive()
+            {
+                box.ScaleTo(new Vector2(1f, 0f), transition_duration);
+            }
+        }
+    }
+}