Moved ExtendableButton out of framework

osu.Game/Graphics/UserInterface/BackButton.cs

@@ -4,7 +4,6 @@
 using OpenTK;
 using OpenTK.Graphics;
 using osu.Framework.Graphics;
-using osu.Framework.Graphics.UserInterface;
 using osu.Framework.Graphics.Transformations;
 using osu.Framework.Input;
 

osu.Game/Graphics/UserInterface/ExtendableButton.cs

@@ -0,0 +1,117 @@
+// Copyright (c) 2007-2016 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu-framework/master/LICENCE
+
+using osu.Framework.Input;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Sprites;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Transformations;
+using OpenTK;
+using OpenTK.Graphics;
+
+namespace osu.Game.Graphics.UserInterface
+{
+    public class ExtendableButton : ClickableContainer
+    {
+        public Color4 BGColour
+        {
+            get { return bgBox.Colour; }
+            set { bgBox.Colour = value; }
+        }
+        public new Color4 Colour
+        {
+            get { return textBox.Colour; }
+            set { textBox.Colour = value; }
+        }
+        public new Vector2 Shear
+        {
+            get { return textBox.Shear; }
+            set { textBox.Shear = value; }
+        }
+        public string Text
+        {
+            get { return spriteText?.Text; }
+            set
+            {
+                if (spriteText != null)
+                    spriteText.Text = value;
+            }
+        }
+
+        private Box bgBox;
+        private Box textBox;
+        public Container textContainer;
+        private SpriteText spriteText;
+
+        public Vector2 ExtendLenght = new Vector2(80,0); // this one can be defaulted
+        public Vector2 InitialExtendLenght/* = new Vector2(40, 0)*/; // but this one unfortunately cant
+
+        public ExtendableButton(float initialExtendLenghtX = 20, float initialExtendLenghtY = 0)
+        {
+            InitialExtendLenght = new Vector2(initialExtendLenghtX, initialExtendLenghtY); // because it just wont use defined settings when creating
+
+            Children = new Drawable[]
+            {
+                bgBox = new Box
+                {
+                    RelativeSizeAxes = Axes.Both,
+                },
+                textContainer = new Container
+                {
+                    Origin = Anchor.TopLeft,
+                    Anchor = Anchor.TopLeft,
+                    RelativeSizeAxes = Axes.Both,
+                    Position = Position + InitialExtendLenght,
+                    Children = new Drawable[]
+                    {
+                        textBox = new Box
+                        {
+                            Origin = Anchor.TopLeft,
+                            Anchor = Anchor.TopLeft,
+                            RelativeSizeAxes = Axes.Both,
+                            Shear = new Vector2(0.1f, 0), // should be relative?
+                            EdgeSmoothness = new Vector2(1, 1), // should be based on which side is being cut?
+                        },
+                        spriteText = new SpriteText
+                        {
+                            Origin = Anchor.Centre,
+                            Anchor = Anchor.Centre,
+                        }
+                    }
+                }
+            };
+        }
+
+        protected override bool OnHover(InputState state)
+        {
+            textContainer.ClearTransformations();
+            textContainer.MoveTo(Position + ExtendLenght, 150, EasingTypes.OutElastic);
+            return base.OnHover(state);
+        }
+
+        protected override void OnHoverLost(InputState state)
+        {
+            base.OnHoverLost(state);
+            textContainer.ClearTransformations();
+            textContainer.MoveTo(Position + InitialExtendLenght, 150, EasingTypes.OutElastic);
+        }
+
+        protected override bool OnClick(InputState state)
+        {
+            var flash = new Box
+            {
+                RelativeSizeAxes = Axes.Both
+            };
+
+            Add(flash);
+
+            flash.Colour = textBox.Colour;
+            flash.BlendingMode = BlendingMode.Additive;
+            flash.Alpha = 0.3f;
+            flash.FadeOutFromOne(200);
+            flash.Expire();
+
+            return base.OnClick(state);
+        }
+    }
+}

osu.Game/osu.Game.csproj

@@ -66,6 +66,7 @@
     <Compile Include="Beatmaps\Drawables\BeatmapBackgroundSprite.cs" />
     <Compile Include="Graphics\Cursor\CursorTrail.cs" />
     <Compile Include="Graphics\UserInterface\BackButton.cs" />
+    <Compile Include="Graphics\UserInterface\ExtendableButton.cs" />
     <Compile Include="Modes\Objects\HitObjectParser.cs" />
     <Compile Include="Overlays\DragBar.cs" />
     <Compile Include="Overlays\MusicController.cs" />