From c642f6c34f3cef27d924318891d464212d7dbb2e Mon Sep 17 00:00:00 2001
From: Drew DeVault <sir@cmpwn.com>
Date: Wed, 7 Dec 2016 15:39:21 -0500
Subject: [PATCH] Add sliderbar L+F

---
 osu.Game/Overlays/Options/SliderOption.cs | 135 +++++++++++++++-------
 1 file changed, 91 insertions(+), 44 deletions(-)

diff --git a/osu.Game/Overlays/Options/SliderOption.cs b/osu.Game/Overlays/Options/SliderOption.cs
index d00eeebe35..cbb6fc4148 100644
--- a/osu.Game/Overlays/Options/SliderOption.cs
+++ b/osu.Game/Overlays/Options/SliderOption.cs
@@ -1,53 +1,100 @@
-using System;
+using System;
+using OpenTK;
 using OpenTK.Graphics;
 using osu.Framework.Configuration;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Primitives;
 using osu.Framework.Graphics.Sprites;
+using osu.Framework.Graphics.Transformations;
 using osu.Framework.Graphics.UserInterface;
 
-namespace osu.Game.Overlays.Options
-{
-    public class SliderOption<T> : FlowContainer where T : struct,
-        IComparable, IFormattable, IConvertible, IComparable<T>, IEquatable<T>
-    {
-        private SliderBar<T> slider;
-        private SpriteText text;
-    
-        public string LabelText
-        {
-            get { return text.Text; }
-            set
-            {
-                text.Text = value;
-                text.Alpha = string.IsNullOrEmpty(value) ? 0 : 1;
-            }
-        }
-        
-        public BindableNumber<T> Bindable
-        {
-            get { return slider.Bindable; }
-            set { slider.Bindable = value; }
-        }
-
-        public SliderOption()
-        {
-            Direction = FlowDirection.VerticalOnly;
-            RelativeSizeAxes = Axes.X;
-            AutoSizeAxes = Axes.Y;
-            Children = new Drawable[]
-            {
-                text = new SpriteText { Alpha = 0 },
-                slider = new SliderBar<T>
-                {
-                    Margin = new MarginPadding { Top = 5 },
-                    Height = 10,
-                    RelativeSizeAxes = Axes.X,
-                    Color = Color4.White,
-                    SelectionColor = new Color4(255, 102, 170, 255),
-                }
-            };
-        }
-    }
+namespace osu.Game.Overlays.Options
+{
+    public class SliderOption<T> : FlowContainer where T : struct,
+        IComparable, IFormattable, IConvertible, IComparable<T>, IEquatable<T>
+    {
+        private SliderBar<T> slider;
+        private SpriteText text;
+    
+        public string LabelText
+        {
+            get { return text.Text; }
+            set
+            {
+                text.Text = value;
+                text.Alpha = string.IsNullOrEmpty(value) ? 0 : 1;
+            }
+        }
+        
+        public BindableNumber<T> Bindable
+        {
+            get { return slider.Bindable; }
+            set { slider.Bindable = value; }
+        }
+
+        public SliderOption()
+        {
+            Direction = FlowDirection.VerticalOnly;
+            RelativeSizeAxes = Axes.X;
+            AutoSizeAxes = Axes.Y;
+            Children = new Drawable[]
+            {
+                text = new SpriteText { Alpha = 0 },
+                slider = new OsuSliderBar<T>
+                {
+                    Margin = new MarginPadding { Top = 5 },
+                    RelativeSizeAxes = Axes.X,
+                }
+            };
+        }
+
+        private class OsuSliderBar<U> : SliderBar<U> where U : struct,
+            IComparable, IFormattable, IConvertible, IComparable<U>, IEquatable<U>
+        {
+            private Container nub;
+        
+            public OsuSliderBar()
+            {
+                Height = 22;
+                Color = Color4.White;
+                SelectionColor = new Color4(255, 102, 170, 255);
+                Add(nub = new Container
+                {
+                    Width = Height,
+                    Height = Height,
+                    CornerRadius = Height / 2,
+                    Origin = Anchor.TopCentre,
+                    AutoSizeAxes = Axes.None,
+                    RelativeSizeAxes = Axes.None,
+                    RelativePositionAxes = Axes.X,
+                    Masking = true,
+                    BorderColour = new Color4(255, 102, 170, 255),
+                    BorderThickness = 2,
+                    Children = new[]
+                    {
+                        new Box { Colour = Color4.Transparent, RelativeSizeAxes = Axes.Both }
+                    }
+                });
+                Box.Height = SelectionBox.Height = 2;
+                Box.RelativePositionAxes = Axes.None;
+                Box.RelativeSizeAxes = SelectionBox.RelativeSizeAxes = Axes.None;
+                Box.Position = SelectionBox.Position = new Vector2(0, Height / 2 - 1);
+                Box.Colour = new Color4(255, 102, 170, 100);
+            }
+
+            protected override void UpdateAmount(float amt)
+            {
+                nub.MoveToX(amt, 300, EasingTypes.OutQuint);
+                SelectionBox.ScaleTo(
+                    new Vector2(DrawWidth * amt - Height / 2 + 1, 1),
+                    300, EasingTypes.OutQuint);
+                Box.MoveToX(DrawWidth * amt + Height / 2 - 1,
+                    300, EasingTypes.OutQuint);
+                Box.ScaleTo(
+                    new Vector2(DrawWidth * (1 - amt) - Height / 2 + 1, 1),
+                    300, EasingTypes.OutQuint);
+            }
+        }
+    }
 }
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