From 006cb3cd5e1ab5f6457c8878bbb9eaf18b255aff Mon Sep 17 00:00:00 2001
From: Developer <dev@epub-read.local>
Date: Fri, 15 May 2026 23:21:45 +0800
Subject: [PATCH] fix(style): use additive line_spacing model (font*1.1 +
 extra) instead of multiplicative

---
 src/style.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/style.rs b/src/style.rs
index 65ae12a..75b6463 100644
--- a/src/style.rs
+++ b/src/style.rs
@@ -56,7 +56,9 @@ impl StyleProfile {
     }
 
     pub fn line_height(&self) -> f32 {
-        self.font_size * self.line_spacing
+        // egui actual line height is approximately font_size * 1.1
+        // line_spacing adds extra (line_spacing - 1.0) * font_size * 0.5 as extra gap
+        self.font_size * 1.1 + self.font_size * (self.line_spacing - 1.0).max(0.0) * 0.5
     }
 
     pub fn apply_to_text(&self, text: &str) -> String {