From 0cc6818b21f8bb88746269570e22e9ce399ab74a Mon Sep 17 00:00:00 2001
From: Caiyi Shyu <cai1hsu@outlook.com>
Date: Fri, 26 Jul 2024 22:44:50 +0800
Subject: [PATCH] allow hover to expand `ModCustomisationPanel`

---
 .../Overlays/Mods/ModCustomisationHeader.cs   | 13 ++++++++++
 .../Overlays/Mods/ModCustomisationPanel.cs    | 24 +++++++++++++++++++
 2 files changed, 37 insertions(+)

diff --git a/osu.Game/Overlays/Mods/ModCustomisationHeader.cs b/osu.Game/Overlays/Mods/ModCustomisationHeader.cs
index bf10e13515..fbdce7be6d 100644
--- a/osu.Game/Overlays/Mods/ModCustomisationHeader.cs
+++ b/osu.Game/Overlays/Mods/ModCustomisationHeader.cs
@@ -8,6 +8,7 @@ using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.Sprites;
+using osu.Framework.Input.Events;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
@@ -28,6 +29,8 @@ namespace osu.Game.Overlays.Mods
 
         public readonly BindableBool Expanded = new BindableBool();
 
+        protected new ModCustomisationPanel Parent => (ModCustomisationPanel)base.Parent;
+
         public ModCustomisationHeader()
         {
             Action = Expanded.Toggle;
@@ -91,5 +94,15 @@ namespace osu.Game.Overlays.Mods
                 icon.ScaleTo(v.NewValue ? new Vector2(1, -1) : Vector2.One, 300, Easing.OutQuint);
             }, true);
         }
+
+        protected override bool OnHover(HoverEvent e)
+        {
+            if (Enabled.Value)
+            {
+                Parent.UpdateHoverExpansion(true);
+            }
+
+            return base.OnHover(e);
+        }
     }
 }
diff --git a/osu.Game/Overlays/Mods/ModCustomisationPanel.cs b/osu.Game/Overlays/Mods/ModCustomisationPanel.cs
index a1e64e8c49..a82e279d01 100644
--- a/osu.Game/Overlays/Mods/ModCustomisationPanel.cs
+++ b/osu.Game/Overlays/Mods/ModCustomisationPanel.cs
@@ -175,6 +175,22 @@ namespace osu.Game.Overlays.Mods
                 content.ResizeHeightTo(header_height, 400, Easing.OutQuint);
                 content.FadeOut(400, Easing.OutSine);
             }
+
+            expandedByHovering = false;
+        }
+
+        private bool expandedByHovering = false;
+        public void UpdateHoverExpansion(bool hovered)
+        {
+            if (hovered && !Expanded.Value)
+            {
+                Expanded.Value = true;
+                expandedByHovering = true;
+            }
+            else if (!hovered && expandedByHovering)
+            {
+                Expanded.Value = false;
+            }
         }
 
         private void updateMods()
@@ -206,6 +222,14 @@ namespace osu.Game.Overlays.Mods
 
             public override bool RequestsFocus => Expanded.Value;
             public override bool AcceptsFocus => Expanded.Value;
+
+            public new ModCustomisationPanel Parent => (ModCustomisationPanel)base.Parent;
+
+            protected override void OnHoverLost(HoverLostEvent e)
+            {
+                Parent.UpdateHoverExpansion(false);
+                base.OnHoverLost(e);
+            }
         }
     }
 }