feat: 优化代码

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

@@ -5,7 +5,6 @@ import android.content.Intent
 import android.net.Uri
 import android.os.Bundle
 import android.os.Handler
-import android.text.SpannableStringBuilder
 import android.view.KeyEvent
 import android.view.Menu
 import android.view.MenuItem
@@ -506,7 +505,7 @@ class ReadBookActivity : VMBaseActivity<ReadBookViewModel>(R.layout.activity_boo
             if (it == Status.STOP || it == Status.PAUSE) {
                 ReadBook.curTextChapter?.let { textChapter ->
                     val page = textChapter.page(ReadBook.durPageIndex)
-                    if (page != null && page.text is SpannableStringBuilder) {
+                    if (page != null) {
                         page.removePageAloudSpan()
                         page_view.upContent()
                     }

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

@@ -5,6 +5,7 @@ import android.graphics.Canvas
 import android.util.AttributeSet
 import android.view.View
 import io.legado.app.help.ReadBookConfig
+import io.legado.app.lib.theme.accentColor
 import io.legado.app.ui.book.read.page.entities.TextPage
 
 
@@ -36,25 +37,26 @@ class ContentTextView : View {
         super.onDraw(canvas)
         textPage?.let { textPage ->
             textPage.textLines.forEach { textLine ->
-                textLine.textChars.forEach {
-                    if (textLine.isTitle) {
-                        canvas.drawText(
-                            it.charData,
-                            it.leftBottomPosition.x.toFloat(),
-                            it.leftBottomPosition.y.toFloat(),
+                val textPaint = if (textLine.isTitle) {
                     ChapterProvider.titlePaint
-                        )
                 } else {
+                    ChapterProvider.contentPaint
+                }
+                textPaint.color = if (textLine.isReadAloud) {
+                    context.accentColor
+                } else {
+                    ReadBookConfig.durConfig.textColor()
+                }
+                textLine.textChars.forEach {
                     canvas.drawText(
                         it.charData,
                         it.leftBottomPosition.x.toFloat(),
                         it.leftBottomPosition.y.toFloat(),
-                            ChapterProvider.contentPaint
+                        textPaint
                     )
                 }
             }
         }
     }
-    }
 
 }

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

@@ -1,6 +1,5 @@
 package io.legado.app.ui.book.read.page.entities
 
-import android.text.SpannableStringBuilder
 import kotlin.math.min
 
 data class TextChapter(
@@ -28,12 +27,12 @@ data class TextChapter(
 
     fun scrollPage(): TextPage? {
         if (pages.isNotEmpty()) {
-            val spannableStringBuilder = SpannableStringBuilder()
+            val stringBuilder = StringBuilder()
             pages.forEach {
-                spannableStringBuilder.append(it.text)
+                stringBuilder.append(it.text)
             }
             return TextPage(
-                index = 0, text = spannableStringBuilder, title = title,
+                index = 0, text = stringBuilder.toString(), title = title,
                 pageSize = pages.size, chapterSize = chaptersSize, chapterIndex = position
             )
         }

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

@@ -1,12 +1,11 @@
 package io.legado.app.ui.book.read.page.entities
 
-import android.text.SpannableStringBuilder
 import io.legado.app.App
 import io.legado.app.R
 
 data class TextPage(
     var index: Int = 0,
-    var text: CharSequence = App.INSTANCE.getString(R.string.data_loading),
+    var text: String = App.INSTANCE.getString(R.string.data_loading),
     var title: String = "",
     val textLines: ArrayList<TextLine> = arrayListOf(),
     var pageSize: Int = 0,
@@ -22,16 +21,28 @@ data class TextPage(
     }
 
     fun upPageAloudSpan(pageStart: Int) {
-        if (text is SpannableStringBuilder) {
         removePageAloudSpan()
         var lineStart = 0
-            for (textLine in textLines) {
+        for ((index, textLine) in textLines.withIndex()) {
             if (pageStart > lineStart && pageStart < lineStart + textLine.text.length) {
-                    textLine.isReadAloud = true
+                for (i in index - 1 downTo 0) {
+                    if (textLines[i].text.endsWith("\n")) {
                         break
+                    } else {
+                        textLines[i].isReadAloud = true
+                    }
+                }
+                for (i in index until textLines.size) {
+                    if (textLines[i].text.endsWith("\n")) {
+                        textLines[i].isReadAloud = true
+                        break
+                    } else {
+                        textLines[i].isReadAloud = true
                     }
-                lineStart += textLine.text.length
                 }
+                break
+            }
+            lineStart += textLine.text.length
         }
     }
 }