feat: 优化代码

app/src/main/java/io/legado/app/ui/book/read/page/ChapterProvider.kt

@@ -139,6 +139,9 @@ object ChapterProvider {
         )
     }
 
+    /**
+     * 标题
+     */
     private fun joinTitle(
         title: String,
         y: Int,
@@ -218,6 +221,9 @@ object ChapterProvider {
         return durY
     }
 
+    /**
+     * 正文
+     */
     private fun joinBody(
         text: String,
         y: Int,
@@ -255,6 +261,7 @@ object ChapterProvider {
                 )
             var words =
                 text.substring(layout.getLineStart(lineIndex), layout.getLineEnd(lineIndex))
+            stringBuilder.append(words)
             val desiredWidth = layout.getLineMax(lineIndex)
             if (lineIndex == 0 && layout.lineCount > 1) {
                 //第一行
@@ -289,6 +296,7 @@ object ChapterProvider {
                 }
             } else if (lineIndex == layout.lineCount - 1) {
                 //最后一行
+                stringBuilder.append("\n")
                 var x = 0
                 for (i in words.indices) {
                     val char = words[i].toString()