feat: 优化代码

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

@@ -265,6 +265,7 @@ object ChapterProvider {
             )
             x = x1
         }
+        exceed(textLine, words)
     }
 
     /**
@@ -291,8 +292,25 @@ object ChapterProvider {
             )
             x = x1
         }
+        exceed(textLine, words)
     }
 
+    /**
+     * 超出边界处理
+     */
+    private fun exceed(textLine: TextLine, words: String) {
+        val endX = textLine.textChars.last().end
+        if (endX > visibleRight) {
+            val cc = (endX - visibleRight) / words.length
+            for (i in 0..words.lastIndex) {
+                textLine.getTextCharReverseAt(i).let {
+                    val py = cc * (words.length - i)
+                    it.start = it.start - py
+                    it.end = it.end - py
+                }
+            }
+        }
+    }
 
     /**
      * 更新样式

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

@@ -2,7 +2,7 @@ package io.legado.app.ui.book.read.page.entities
 
 data class TextChar(
     val charData: String,
-    val start: Float,
-    val end: Float,
+    var start: Float,
+    var end: Float,
     var selected: Boolean = false
 )

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

@@ -14,4 +14,15 @@ data class TextLine(
         textChars.add(TextChar(charData, start = start, end = end))
     }
 
+    fun getTextCharAt(index: Int): TextChar {
+        return textChars[index]
+    }
+
+    fun getTextCharReverseAt(index: Int): TextChar {
+        return textChars[textChars.lastIndex - index]
+    }
+
+    fun getTextCharsCount(): Int {
+        return textChars.size
+    }
 }