From 7602121fda18d7ce4bd5642156fe0af2be45357b Mon Sep 17 00:00:00 2001
From: Developer <dev@epub-read.local>
Date: Fri, 15 May 2026 22:16:39 +0800
Subject: [PATCH] fix(pagination): balance window_back=1line, safety_h=0.96,
 recalc_height=-45

---
 src/reader.rs | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/reader.rs b/src/reader.rs
index 38a997e..6a35459 100644
--- a/src/reader.rs
+++ b/src/reader.rs
@@ -6,7 +6,7 @@ use crate::theme::{self, BgType, Theme};
 pub fn recalculate_pages(book: &mut Book, font_size: f32, line_height: f32, panel_width: f32, panel_height: f32, style: &StyleProfile) {
     let char_width = font_size * 1.0;
     let safety_w = 0.95;
-    let safety_h = 0.98;
+    let safety_h = 0.96;
     let chars_per_line = if char_width > 0.0 {
         ((panel_width / char_width) * safety_w).max(1.0) as usize
     } else {
@@ -155,7 +155,7 @@ egui::ComboBox::from_id_salt("bg_type_selector")
     // 在工具条之后、进度条之前用当前可用高度重新分页
     let panel_size = ui.available_size();
     let recalc_width = (panel_size.x - 48.0).max(100.0);
-    let recalc_height = (panel_size.y - 40.0).max(200.0);
+    let recalc_height = (panel_size.y - 45.0).max(200.0);
     recalculate_pages(book, style.font_size, style.line_height(), recalc_width, recalc_height, style);
 
     // --- Bottom progress bar ---
@@ -425,7 +425,7 @@ pub fn calculate_pages(text: &str, chars_per_line: usize, lines_per_page: usize)
         }
 
         if line_count >= lines_per_page && i > page_start {
-            let window_back = (chars_per_line / 2).max(3);
+            let window_back = chars_per_line.max(3);
             let search_start = page_start.max(i.saturating_sub(window_back));
             let mut split = i;
             for j in (search_start..i).rev() {