Update framework and add rudimentary fading to song select screen.

osu-framework

@@ -1 +1 @@
-Subproject commit a4f301076810571bebe9595af7aeaa3c77ac0c59
+Subproject commit 8afa4fa7ae9bbd5f357f859b1cc944c78286751a

osu.Desktop.VisualTests/Tests/TestCaseGamefield.cs

@@ -27,16 +27,12 @@ namespace osu.Desktop.VisualTests.Tests
 
         public override string Description => @"Showing hitobjects and what not.";
 
-        FramedClock localClock;
-
-        protected override IFrameBasedClock Clock => localClock;
-
         public override void Reset()
         {
             base.Reset();
 
             //ensure we are at offset 0
-            localClock = new FramedClock();
+            Clock = new FramedClock();
 
             List<HitObject> objects = new List<HitObject>();
 
@@ -93,7 +89,7 @@ namespace osu.Desktop.VisualTests.Tests
         protected override void Update()
         {
             base.Update();
-            localClock.ProcessFrame();
+            Clock.ProcessFrame();
         }
     }
 }

osu.Desktop.VisualTests/Tests/TestCaseHitObjects.cs

@@ -19,21 +19,17 @@ namespace osu.Desktop.VisualTests.Tests
     {
         public override string Name => @"Hit Objects";
 
-        IFrameBasedClock ourClock;
-
-        protected override IFrameBasedClock Clock => ourClock;
-
         public TestCaseHitObjects()
         {
             var swClock = new StopwatchClock(true) { Rate = 1 };
-            ourClock = new FramedClock(swClock);
+            Clock = new FramedClock(swClock);
         }
 
         public override void Reset()
         {
             base.Reset();
 
-            ourClock.ProcessFrame();
+            Clock.ProcessFrame();
 
             Container approachContainer = new Container { Depth = float.MaxValue, };
 
@@ -45,7 +41,7 @@ namespace osu.Desktop.VisualTests.Tests
             {
                 var h = new HitCircle
                 {
-                    StartTime = ourClock.CurrentTime + 1000 + i * 80,
+                    StartTime = Clock.CurrentTime + 1000 + i * 80,
                     Position = new Vector2((i - count / 2) * 14),
                 };
 
@@ -65,7 +61,7 @@ namespace osu.Desktop.VisualTests.Tests
         protected override void Update()
         {
             base.Update();
-            ourClock.ProcessFrame();
+            Clock.ProcessFrame();
         }
     }
 }

osu.Desktop.VisualTests/Tests/TestCaseMusicController.cs

@@ -13,20 +13,17 @@ namespace osu.Desktop.VisualTests.Tests
         public override string Name => @"Music Controller";
         public override string Description => @"Tests music controller ui.";
 
-        IFrameBasedClock ourClock;
-        protected override IFrameBasedClock Clock => ourClock;
-
         protected MusicController mc;
 
         public TestCaseMusicController()
         {
-            ourClock = new FramedClock();
+            Clock = new FramedClock();
         }
 
         public override void Reset()
         {
             base.Reset();
-            ourClock.ProcessFrame();
+            Clock.ProcessFrame();
             mc = new MusicController
             {
                 Origin = Anchor.Centre,
@@ -39,7 +36,7 @@ namespace osu.Desktop.VisualTests.Tests
         protected override void Update()
         {
             base.Update();
-            ourClock.ProcessFrame();
+            Clock.ProcessFrame();
         }
     }
 }

osu.Desktop.VisualTests/Tests/TestCasePlayer.cs

@@ -8,8 +8,6 @@ using osu.Framework.Timing;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.Formats;
 using OpenTK;
-using osu.Framework;
-using osu.Framework.Allocation;
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Modes.Objects;
 using osu.Game.Modes.Osu.Objects;
@@ -24,16 +22,12 @@ namespace osu.Desktop.VisualTests.Tests
 
         public override string Description => @"Showing everything to play the game.";
 
-        FramedClock localClock;
-
-        protected override IFrameBasedClock Clock => localClock;
-
         public override void Reset()
         {
             base.Reset();
 
             //ensure we are at offset 0
-            localClock = new FramedClock();
+            Clock = new FramedClock();
 
             var objects = new List<HitObject>();
 
@@ -75,7 +69,7 @@ namespace osu.Desktop.VisualTests.Tests
         protected override void Update()
         {
             base.Update();
-            localClock.ProcessFrame();
+            Clock.ProcessFrame();
         }
     }
 }

osu.Game/Screens/Play/PlaySongSelect.cs

@@ -103,6 +103,7 @@ namespace osu.Game.Screens.Play
                 },
                 wedgedContainer = new Container
                 {
+                    Alpha = 0,
                     Position = wedged_container_start_position,
                     Size = wedged_container_size,
                     Margin = new MarginPadding { Top = 20, Right = 20, },
@@ -179,17 +180,31 @@ namespace osu.Game.Screens.Play
         {
             base.OnEntering(last);
             ensurePlayingSelected();
-            backgroundWedgesContainer.FadeInFromZero(250);
 
             changeBackground(Beatmap);
+
+            Content.FadeInFromZero(250);
         }
 
         protected override void OnResuming(GameMode last)
         {
             changeBackground(Beatmap);
-
             ensurePlayingSelected();
             base.OnResuming(last);
+
+            Content.FadeIn(250);
+        }
+
+        protected override void OnSuspending(GameMode next)
+        {
+            Content.FadeOut(250);
+            base.OnSuspending(next);
+        }
+
+        protected override bool OnExiting(GameMode next)
+        {
+            Content.FadeOut(100);
+            return base.OnExiting(next);
         }
 
         protected override void Dispose(bool isDisposing)
@@ -232,6 +247,8 @@ namespace osu.Game.Screens.Play
                 oldWedgedBeatmapInfo.Expire();
             }
 
+            wedgedContainer.FadeIn(250);
+
             BeatmapSetInfo beatmapSetInfo = beatmap.BeatmapSetInfo;
             BeatmapInfo beatmapInfo = beatmap.BeatmapInfo;
             wedgedContainer.Add(wedgedBeatmapInfo = new BufferedContainer
@@ -252,7 +269,7 @@ namespace osu.Game.Screens.Play
                     },
                     // We use a container, such that we can set the colour gradient to go across the
                     // vertices of the masked container instead of the vertices of the (larger) sprite.
-                    new Container
+                    beatmap.Background == null ? new Container() : new Container
                     {
                         RelativeSizeAxes = Axes.Both,
                         ColourInfo = ColourInfo.GradientVertical(Color4.White, new Color4(1f, 1f, 1f, 0.3f)),

osu.Game/Screens/Play/Player.cs

@@ -33,9 +33,6 @@ namespace osu.Game.Screens.Play
 
         public PlayMode PreferredPlayMode;
         
-        protected override IFrameBasedClock Clock => playerClock;
-
-        private InterpolatingFramedClock playerClock;
         private IAdjustableClock sourceClock;
 
         private Ruleset ruleset;
@@ -64,7 +61,7 @@ namespace osu.Game.Screens.Play
             }
 
             sourceClock = (IAdjustableClock)track ?? new StopwatchClock();
-            playerClock = new InterpolatingFramedClock(sourceClock);
+            Clock = new InterpolatingFramedClock(sourceClock);
 
             Schedule(() =>
             {
@@ -118,7 +115,7 @@ namespace osu.Game.Screens.Play
         protected override void Update()
         {
             base.Update();
-            playerClock.ProcessFrame();
+            Clock.ProcessFrame();
         }
 
         class PlayerInputManager : UserInputManager