From 8928aa6d92990ce761c205e80ac3c20b1a4feffe Mon Sep 17 00:00:00 2001
From: Dean Herbert <pe@ppy.sh>
Date: Fri, 30 Oct 2020 14:19:40 +0900
Subject: [PATCH] Add key binding to show HUD while held

---
 .../Input/Bindings/GlobalActionContainer.cs   |  4 +++
 osu.Game/Screens/Play/HUDOverlay.cs           | 36 ++++++++++++++++++-
 2 files changed, 39 insertions(+), 1 deletion(-)

diff --git a/osu.Game/Input/Bindings/GlobalActionContainer.cs b/osu.Game/Input/Bindings/GlobalActionContainer.cs
index 41be4cfcc3..3de4bb1f9d 100644
--- a/osu.Game/Input/Bindings/GlobalActionContainer.cs
+++ b/osu.Game/Input/Bindings/GlobalActionContainer.cs
@@ -67,6 +67,7 @@ namespace osu.Game.Input.Bindings
             new KeyBinding(new[] { InputKey.Control, InputKey.Plus }, GlobalAction.IncreaseScrollSpeed),
             new KeyBinding(new[] { InputKey.Control, InputKey.Minus }, GlobalAction.DecreaseScrollSpeed),
             new KeyBinding(InputKey.MouseMiddle, GlobalAction.PauseGameplay),
+            new KeyBinding(InputKey.Control, GlobalAction.HoldForHUD),
         };
 
         public IEnumerable<KeyBinding> AudioControlKeyBindings => new[]
@@ -187,5 +188,8 @@ namespace osu.Game.Input.Bindings
 
         [Description("Timing Mode")]
         EditorTimingMode,
+
+        [Description("Hold for HUD")]
+        HoldForHUD,
     }
 }
diff --git a/osu.Game/Screens/Play/HUDOverlay.cs b/osu.Game/Screens/Play/HUDOverlay.cs
index b047d44f8a..c38c2ee5f7 100644
--- a/osu.Game/Screens/Play/HUDOverlay.cs
+++ b/osu.Game/Screens/Play/HUDOverlay.cs
@@ -8,8 +8,10 @@ using osu.Framework.Bindables;
 using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
+using osu.Framework.Input.Bindings;
 using osu.Framework.Input.Events;
 using osu.Game.Configuration;
+using osu.Game.Input.Bindings;
 using osu.Game.Overlays;
 using osu.Game.Overlays.Notifications;
 using osu.Game.Rulesets.Mods;
@@ -22,7 +24,7 @@ using osuTK.Input;
 namespace osu.Game.Screens.Play
 {
     [Cached]
-    public class HUDOverlay : Container
+    public class HUDOverlay : Container, IKeyBindingHandler<GlobalAction>
     {
         public const float FADE_DURATION = 400;
 
@@ -67,6 +69,8 @@ namespace osu.Game.Screens.Play
 
         internal readonly IBindable<bool> IsBreakTime = new Bindable<bool>();
 
+        private bool holdingForHUD;
+
         private IEnumerable<Drawable> hideTargets => new Drawable[] { visibilityContainer, KeyCounter };
 
         public HUDOverlay(ScoreProcessor scoreProcessor, HealthProcessor healthProcessor, DrawableRuleset drawableRuleset, IReadOnlyList<Mod> mods)
@@ -217,6 +221,12 @@ namespace osu.Game.Screens.Play
             if (ShowHud.Disabled)
                 return;
 
+            if (holdingForHUD)
+            {
+                ShowHud.Value = true;
+                return;
+            }
+
             switch (configVisibilityMode.Value)
             {
                 case HUDVisibilityMode.Never:
@@ -351,5 +361,29 @@ namespace osu.Game.Screens.Play
             HealthDisplay?.BindHealthProcessor(processor);
             FailingLayer?.BindHealthProcessor(processor);
         }
+
+        public bool OnPressed(GlobalAction action)
+        {
+            switch (action)
+            {
+                case GlobalAction.HoldForHUD:
+                    holdingForHUD = true;
+                    updateVisibility();
+                    return true;
+            }
+
+            return false;
+        }
+
+        public void OnReleased(GlobalAction action)
+        {
+            switch (action)
+            {
+                case GlobalAction.HoldForHUD:
+                    holdingForHUD = false;
+                    updateVisibility();
+                    break;
+            }
+        }
     }
 }