From 30432e43d4e2849a2761cf45fd3df1fbdad293e8 Mon Sep 17 00:00:00 2001
From: Ellpeck <me@ellpeck.de>
Date: Sun, 21 May 2023 11:19:24 +0200
Subject: [PATCH] Fixed dropdown menu panels not updating their width when the
 dropdown's width changes

---
 CHANGELOG.md                 | 1 +
 MLEM.Ui/Elements/Dropdown.cs | 7 +++++--
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 149dc1a..4fd3a63 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -50,6 +50,7 @@ Fixes
 - Fixed AutoInline elements overflowing into their parent if it's taller
 - Fixed Paragraph and Checkbox not reacting to SquishingGroup sizing properly
 - Fixed TextInput and Slider still reacting to input when they are selected, but not part of the active root
+- Fixed dropdown menu panels not updating their width when the dropdown's width changes
 
 ### MLEM.Data
 Improvements
diff --git a/MLEM.Ui/Elements/Dropdown.cs b/MLEM.Ui/Elements/Dropdown.cs
index 3c1b46e..e9f080f 100644
--- a/MLEM.Ui/Elements/Dropdown.cs
+++ b/MLEM.Ui/Elements/Dropdown.cs
@@ -37,10 +37,13 @@ namespace MLEM.Ui.Elements {
         /// <param name="text">The text displayed on the dropdown button</param>
         /// <param name="tooltipText">The text displayed as a tooltip when hovering over the dropdown button</param>
         public Dropdown(Anchor anchor, Vector2 size, string text = null, string tooltipText = null) : base(anchor, size, text, tooltipText) {
-            this.Panel = this.AddChild(new Panel(Anchor.TopCenter, size, Vector2.Zero, true) {
+            this.Panel = this.AddChild(new Panel(Anchor.TopCenter, Vector2.Zero, Vector2.Zero, true) {
                 IsHidden = true
             });
-            this.OnAreaUpdated += e => this.Panel.PositionOffset = new Vector2(0, e.Area.Height / this.Scale);
+            this.OnAreaUpdated += e => {
+                this.Panel.Size = new Vector2(e.Area.Width / e.Scale, 0);
+                this.Panel.PositionOffset = new Vector2(0, e.Area.Height / e.Scale);
+            };
             this.OnOpenedOrClosed += e => this.Priority = this.IsOpen ? 10000 : 0;
             this.OnPressed += e => {
                 this.IsOpen = !this.IsOpen;