From 1ddd143e4530392e2087ef32f468e09f53571378 Mon Sep 17 00:00:00 2001
From: valadaptive <valadaptive@protonmail.com>
Date: Thu, 7 Aug 2025 18:55:15 -0400
Subject: [PATCH] Fix panic if no fonts loaded

---
 crates/epaint/src/text/font.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/crates/epaint/src/text/font.rs b/crates/epaint/src/text/font.rs
index 3d73eaa80..29d834369 100644
--- a/crates/epaint/src/text/font.rs
+++ b/crates/epaint/src/text/font.rs
@@ -390,7 +390,12 @@ impl Font<'_> {
     /// Returns a value rounded to [`emath::GUI_ROUNDING`].
     #[inline(always)]
     pub fn row_height(&self, font_size: f32) -> f32 {
-        let Some(first_font) = self.fonts_by_id.get(&self.cached_family.fonts[0]) else {
+        let Some(first_font) = self
+            .cached_family
+            .fonts
+            .first()
+            .and_then(|key| self.fonts_by_id.get(key))
+        else {
             return 0.0;
         };
         first_font.row_height(font_size)