From e9343fe53dd6ffc1b81bbcf7c9f80b596307083c Mon Sep 17 00:00:00 2001
From: stanriders <castl@inbox.ru>
Date: Sun, 27 Nov 2016 04:21:12 +0300
Subject: [PATCH] Add stable-alike BackButton

---
 osu-framework                                 |  2 +-
 osu.Game/Graphics/UserInterface/BackButton.cs | 84 +++++++++++++++++++
 osu.Game/Screens/GameModeWhiteBox.cs          | 11 ++-
 osu.Game/Screens/Select/PlaySongSelect.cs     |  7 ++
 osu.Game/osu.Game.csproj                      |  1 +
 5 files changed, 98 insertions(+), 7 deletions(-)
 create mode 100644 osu.Game/Graphics/UserInterface/BackButton.cs

diff --git a/osu-framework b/osu-framework
index 24af3b161d..ea56eab4a2 160000
--- a/osu-framework
+++ b/osu-framework
@@ -1 +1 @@
-Subproject commit 24af3b161da9447b678edd8ec32193df54f71e3b
+Subproject commit ea56eab4a2bb4c9723052586ed30c687898fecb0
diff --git a/osu.Game/Graphics/UserInterface/BackButton.cs b/osu.Game/Graphics/UserInterface/BackButton.cs
new file mode 100644
index 0000000000..f4190f3894
--- /dev/null
+++ b/osu.Game/Graphics/UserInterface/BackButton.cs
@@ -0,0 +1,84 @@
+// 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 OpenTK;
+using OpenTK.Graphics;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.UserInterface;
+using osu.Framework.Graphics.Transformations;
+using osu.Framework.Input;
+
+namespace osu.Game.Graphics.UserInterface
+{
+    // Basic back button as it was on stable (kinda). No skinning possible for now
+    class BackButton : ExtendableButton
+    {
+        private TextAwesome icon;
+        private Vector2 iconPos = new Vector2(20, 0);
+
+        public BackButton()
+        {
+            InitialExtendLenght = new Vector2(40, 0);
+            ExtendLenght = new Vector2(60, 0);
+
+            RelativeSizeAxes = Axes.Y;
+            Width = 80;
+            //Height = 40; // should be set or should be relative?
+
+            Text = @"Back";
+
+            BGColour = new Color4(195, 40, 140, 255);
+            Colour = new Color4(238, 51, 153, 255);
+
+            Children = new Drawable[]
+            {
+                icon = new TextAwesome
+                {
+                    Anchor = Anchor.CentreLeft,
+                    TextSize = 25,
+                    Position = iconPos,
+                    Icon = FontAwesome.fa_osu_left_o
+                }
+            };
+
+            // HACK: because it never uses InitialExtendLenght that we give to it on creation
+            textContainer.Position = Position + InitialExtendLenght; 
+        }
+        protected override bool OnHover(InputState state)
+        {
+            bool result = base.OnHover(state);
+
+            icon.ClearTransformations();
+
+            icon.MoveToX(iconPos.X + 10, 150, EasingTypes.OutElastic);
+
+            int duration = 0; //(int)(Game.Audio.BeatLength / 2);
+            if (duration == 0) duration = 250;
+
+            double offset = 0; //(1 - Game.Audio.SyncBeatProgress) * duration;
+            double startTime = Time.Current + offset;
+
+            // basic pulse
+            icon.Transforms.Add(new TransformScale
+            {
+                StartValue = new Vector2(1.1f, 1.1f),
+                EndValue = Vector2.One,
+                StartTime = startTime,
+                EndTime = startTime + duration,
+                Easing = EasingTypes.Out,
+                LoopCount = -1,
+                LoopDelay = duration
+            });
+
+            return result;
+        }
+
+        protected override void OnHoverLost(InputState state)
+        {
+            icon.ClearTransformations();
+            icon.MoveToX(iconPos.X, 150, EasingTypes.OutElastic);
+
+            base.OnHoverLost(state);
+        }
+    }
+}
diff --git a/osu.Game/Screens/GameModeWhiteBox.cs b/osu.Game/Screens/GameModeWhiteBox.cs
index ac6cc5ece3..ef85f9e23e 100644
--- a/osu.Game/Screens/GameModeWhiteBox.cs
+++ b/osu.Game/Screens/GameModeWhiteBox.cs
@@ -10,6 +10,7 @@ using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.Transformations;
 using osu.Framework.Graphics.UserInterface;
 using osu.Game.Screens.Backgrounds;
+using osu.Game.Graphics.UserInterface;
 using OpenTK;
 using OpenTK.Graphics;
 
@@ -17,7 +18,7 @@ namespace osu.Game.Screens
 {
     public class GameModeWhiteBox : OsuGameMode
     {
-        private Button popButton;
+        private BackButton popButton;
 
         const int transition_time = 1000;
 
@@ -113,14 +114,12 @@ namespace osu.Game.Screens
                         },
                     }
                 },
-                popButton = new Button
+                popButton = new BackButton
                 {
-                    Text = @"Back",
-                    RelativeSizeAxes = Axes.X,
-                    Size = new Vector2(0.1f, 40),
+                    RelativeSizeAxes = Axes.None,
+                    Height = 40,
                     Anchor = Anchor.BottomLeft,
                     Origin = Anchor.BottomLeft,
-                    Colour = new Color4(235, 51, 153, 255),
                     Alpha = 0,
                     Action = delegate {
                         Exit();
diff --git a/osu.Game/Screens/Select/PlaySongSelect.cs b/osu.Game/Screens/Select/PlaySongSelect.cs
index 8c8ff39fba..9688b36a99 100644
--- a/osu.Game/Screens/Select/PlaySongSelect.cs
+++ b/osu.Game/Screens/Select/PlaySongSelect.cs
@@ -19,6 +19,7 @@ using osu.Game.Beatmaps;
 using osu.Game.Database;
 using osu.Game.Modes;
 using osu.Game.Screens.Backgrounds;
+using osu.Game.Graphics.UserInterface;
 using OpenTK;
 using OpenTK.Graphics;
 using osu.Game.Screens.Play;
@@ -120,6 +121,12 @@ namespace osu.Game.Screens.Select
                             Size = Vector2.One,
                             Colour = new Color4(0, 0, 0, 0.5f),
                         },
+                        new BackButton
+                        {
+                            Anchor = Anchor.CentreLeft,
+                            Origin = Anchor.CentreLeft,
+                            Action = () => Exit()
+                        },
                         new Button
                         {
                             Anchor = Anchor.CentreRight,
diff --git a/osu.Game/osu.Game.csproj b/osu.Game/osu.Game.csproj
index c35bafb251..f1bdd47b68 100644
--- a/osu.Game/osu.Game.csproj
+++ b/osu.Game/osu.Game.csproj
@@ -65,6 +65,7 @@
   <ItemGroup>
     <Compile Include="Beatmaps\Drawables\BeatmapBackgroundSprite.cs" />
     <Compile Include="Graphics\Cursor\CursorTrail.cs" />
+    <Compile Include="Graphics\UserInterface\BackButton.cs" />
     <Compile Include="Modes\Objects\HitObjectParser.cs" />
     <Compile Include="Overlays\DragBar.cs" />
     <Compile Include="Overlays\MusicController.cs" />