From 8e2d333130de2c2088e873d9edbd1feddefdb4b5 Mon Sep 17 00:00:00 2001
From: Jon Kazama <kontakt@hellion-media.de>
Date: Tue, 16 Jun 2026 00:24:18 +0200
Subject: [PATCH] fix(toptab): size each tab selectable to its label width

---
 HellionChat/Ui/Components/TopTabBar.cs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/HellionChat/Ui/Components/TopTabBar.cs b/HellionChat/Ui/Components/TopTabBar.cs
index 767417f..5010335 100644
--- a/HellionChat/Ui/Components/TopTabBar.cs
+++ b/HellionChat/Ui/Components/TopTabBar.cs
@@ -25,12 +25,17 @@ internal sealed class TopTabBar
                 ImGui.SameLine();
 
             var selected = ReferenceEquals(tab, activeTab);
+            // Size the selectable to its own label width. A zero width makes ImGui
+            // stretch the selectable's box to the full remaining window width
+            // (imgui_widgets.cpp:7378), so in this SameLine row every tab overlaps
+            // into one giant bar and clicking never lands on the intended tab.
+            var tabWidth = ImGui.CalcTextSize(tab.Name).X;
             if (
                 ImGui.Selectable(
                     $"{tab.Name}###hellion_toptab_{i}",
                     selected,
                     ImGuiSelectableFlags.None,
-                    new Vector2(0, 0)
+                    new Vector2(tabWidth, 0)
                 )
             )
             {