feat: 优化代码

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

@@ -105,6 +105,10 @@ class ContentView(context: Context) : FrameLayout(context) {
         }
     }
 
+    fun resetPageOffset() {
+        content_text_view.resetPageOffset()
+    }
+
     @SuppressLint("SetTextI18n")
     fun setPageIndex(pageIndex: Int?) {
         pageIndex?.let {

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

@@ -70,6 +70,10 @@ abstract class PageDelegate(protected val pageView: PageView) :
     var firstLineIndex: Int = 0
     var firstCharIndex: Int = 0
 
+    init {
+        curPage.resetPageOffset()
+    }
+
     open fun setStartPoint(x: Float, y: Float, invalidate: Boolean = true) {
         startX = x
         startY = y