added hover effects to panels in social

at least partially QQ

osu.Game/Overlays/Social/SocialPanel.cs

@@ -0,0 +1,60 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using OpenTK;
+using OpenTK.Graphics;
+using osu.Framework.Extensions.Color4Extensions;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Input;
+using osu.Game.Users;
+
+namespace osu.Game.Overlays.Social
+{
+    public class SocialPanel : UserPanel
+    {
+        private const double hover_transition_time = 400;
+
+        public SocialPanel(User user) : base(user)
+        {
+        }
+
+        private readonly EdgeEffectParameters edgeEffectNormal = new EdgeEffectParameters
+        {
+            Type = EdgeEffectType.Shadow,
+            Offset = new Vector2(0f, 1f),
+            Radius = 2f,
+            Colour = Color4.Black.Opacity(0.25f),
+        };
+
+        private readonly EdgeEffectParameters edgeEffectHovered = new EdgeEffectParameters
+        {
+            Type = EdgeEffectType.Shadow,
+            Offset = new Vector2(0f, 5f),
+            Radius = 10f,
+            Colour = Color4.Black.Opacity(0.3f),
+        };
+
+        protected override bool OnHover(InputState state)
+        {
+            TweenEdgeEffectTo(edgeEffectHovered, hover_transition_time, Easing.OutQuint);
+            //Content.MoveToY(-4, hover_transition_time, Easing.OutQuint);
+
+            return base.OnHover(state);
+        }
+
+        protected override void OnHoverLost(InputState state)
+        {
+            TweenEdgeEffectTo(edgeEffectNormal, hover_transition_time, Easing.OutQuint);
+            //Content.MoveToY(0, hover_transition_time, Easing.OutQuint);
+
+            base.OnHoverLost(state);
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+            this.FadeInFromZero(200, Easing.Out);
+        }
+    }
+}