From f6458aa26d9b7cba848faea8ab1a1e75ad8e88ec Mon Sep 17 00:00:00 2001
From: Jamie Taylor <me@nekodex.net>
Date: Thu, 7 Oct 2021 17:56:11 +0900
Subject: [PATCH] Add filter effect to collection management dialog

---
 osu.Game/Collections/ManageCollectionsDialog.cs | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/osu.Game/Collections/ManageCollectionsDialog.cs b/osu.Game/Collections/ManageCollectionsDialog.cs
index 680fec904f..c239396a41 100644
--- a/osu.Game/Collections/ManageCollectionsDialog.cs
+++ b/osu.Game/Collections/ManageCollectionsDialog.cs
@@ -2,11 +2,13 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
+using osu.Framework.Audio;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.Sprites;
+using osu.Game.Audio.Effects;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
@@ -19,6 +21,7 @@ namespace osu.Game.Collections
     {
         private const double enter_duration = 500;
         private const double exit_duration = 200;
+        private Filter lpFilter;
 
         [Resolved(CanBeNull = true)]
         private CollectionManager collectionManager { get; set; }
@@ -36,7 +39,7 @@ namespace osu.Game.Collections
         }
 
         [BackgroundDependencyLoader]
-        private void load(OsuColour colours)
+        private void load(OsuColour colours, AudioManager audio)
         {
             Children = new Drawable[]
             {
@@ -108,7 +111,8 @@ namespace osu.Game.Collections
                             },
                         }
                     }
-                }
+                },
+                lpFilter = new Filter(audio.TrackMixer)
             };
         }
 
@@ -116,6 +120,7 @@ namespace osu.Game.Collections
         {
             base.PopIn();
 
+            lpFilter.CutoffTo(300, 100, Easing.OutCubic);
             this.FadeIn(enter_duration, Easing.OutQuint);
             this.ScaleTo(0.9f).Then().ScaleTo(1f, enter_duration, Easing.OutQuint);
         }
@@ -124,6 +129,7 @@ namespace osu.Game.Collections
         {
             base.PopOut();
 
+            lpFilter.CutoffTo(lpFilter.MaxCutoff, 100, Easing.InCubic);
             this.FadeOut(exit_duration, Easing.OutQuint);
             this.ScaleTo(0.9f, exit_duration);