From d45cecaa148abb5c84584ae3b0cf68190d838a4d Mon Sep 17 00:00:00 2001
From: Horis <8674809+821938089@users.noreply.github.com>
Date: Sat, 15 Nov 2025 17:14:22 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BC=98=E5=8C=96?=
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---
 .../read/page/provider/ChapterProvider.kt     | 37 ++++++++++++-------
 1 file changed, 24 insertions(+), 13 deletions(-)

diff --git a/app/src/main/java/io/legado/app/ui/book/read/page/provider/ChapterProvider.kt b/app/src/main/java/io/legado/app/ui/book/read/page/provider/ChapterProvider.kt
index df07acc70..a25527e81 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/page/provider/ChapterProvider.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/page/provider/ChapterProvider.kt
@@ -1022,21 +1022,32 @@ object ChapterProvider {
 
         if (paddingLeft >= visibleRight || paddingTop >= visibleBottom) {
             AppLog.put("边距设置过大，请重新设置", toast = true)
-            visibleRect.set(
-                0f,
-                0f,
-                viewWidth.toFloat(),
-                viewHeight.toFloat()
-            )
-        } else {
-            visibleRect.set(
-                paddingLeft.toFloat(),
-                paddingTop.toFloat(),
-                visibleRight.toFloat(),
-                visibleBottom.toFloat()
-            )
+            setFallbackLayout()
         }
 
+        visibleRect.set(
+            paddingLeft.toFloat(),
+            paddingTop.toFloat(),
+            visibleRight.toFloat(),
+            visibleBottom.toFloat()
+        )
+
+    }
+
+    private fun setFallbackLayout() {
+        paddingLeft = 20.dpToPx()
+        paddingTop = 5.dpToPx()
+        paddingRight = 20.dpToPx()
+        paddingBottom = 5.dpToPx()
+        visibleWidth = if (doublePage) {
+            viewWidth / 2 - paddingLeft - paddingRight
+        } else {
+            viewWidth - paddingLeft - paddingRight
+        }
+        //留1dp画最后一行下划线
+        visibleHeight = viewHeight - paddingTop - paddingBottom
+        visibleRight = viewWidth - paddingRight
+        visibleBottom = paddingTop + visibleHeight
     }
 
 }