从文字选择处开始朗读,未完成

app/src/main/java/io/legado/app/model/ReadBook.kt

@@ -131,11 +131,19 @@ object ReadBook : CoroutineScope by MainScope() {
         }
     }
 
-    fun moveToNextPage() {
-        durChapterPos = curTextChapter?.getNextPageLength(durChapterPos) ?: durChapterPos
+    fun moveToNextPage(): Boolean {
+        var hasNextPage = false
+        curTextChapter?.let {
+            val nextPagePos = it.getNextPageLength(durChapterPos)
+            if (nextPagePos >= 0) {
+                hasNextPage = true
+                durChapterPos = nextPagePos
                 callBack?.upContent()
                 saveRead()
             }
+        }
+        return hasNextPage
+    }
 
     fun moveToNextChapter(upContent: Boolean): Boolean {
         if (durChapterIndex < chapterSize - 1) {

app/src/main/java/io/legado/app/service/BaseReadAloudService.kt

@@ -100,13 +100,11 @@ abstract class BaseReadAloudService : BaseService(),
 
     override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
         when (intent?.action) {
-            IntentAction.play -> {
-                textChapter = ReadBook.curTextChapter
-                pageIndex = intent.getIntExtra("pageIndex", ReadBook.durPageIndex)
-                newReadAloud(
-                    intent.getBooleanExtra("play", true)
+            IntentAction.play -> newReadAloud(
+                intent.getBooleanExtra("play", true),
+                intent.getIntExtra("pageIndex", ReadBook.durPageIndex),
+                intent.getIntExtra("startPos", 0)
             )
-            }
             IntentAction.pause -> pauseReadAloud(true)
             IntentAction.resume -> resumeReadAloud()
             IntentAction.upTtsSpeechRate -> upSpeechRate(true)
@@ -119,11 +117,11 @@ abstract class BaseReadAloudService : BaseService(),
         return super.onStartCommand(intent, flags, startId)
     }
 
-    @CallSuper
-    open fun newReadAloud(play: Boolean) {
+    private fun newReadAloud(play: Boolean, pageIndex: Int, startPos: Int) {
+        textChapter = ReadBook.curTextChapter
         textChapter?.let { textChapter ->
             nowSpeak = 0
-            readAloudNumber = textChapter.getReadLength(pageIndex)
+            readAloudNumber = textChapter.getReadLength(pageIndex) + startPos
             contentList.clear()
             if (getPrefBoolean(PreferKey.readAloudByPage)) {
                 for (index in pageIndex..textChapter.lastIndex) {

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

@@ -616,9 +616,7 @@ class ReadBookActivity : BaseReadBookActivity(),
      */
     override fun onMenuItemSelected(itemId: Int): Boolean {
         when (itemId) {
-            R.id.menu_aloud -> {
-                ReadBook.readAloud()
-            }
+            R.id.menu_aloud -> binding.readView.aloudStartSelect()
             R.id.menu_bookmark -> binding.readView.curPage.let {
                 val bookmark = it.createBookmark()
                 if (bookmark == null) {

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

@@ -14,7 +14,6 @@ import io.legado.app.help.config.ReadTipConfig
 import io.legado.app.model.ReadBook
 import io.legado.app.ui.book.read.ReadBookActivity
 import io.legado.app.ui.book.read.page.entities.TextPage
-import io.legado.app.ui.book.read.page.entities.TextPos
 import io.legado.app.ui.book.read.page.provider.ChapterProvider
 import io.legado.app.ui.widget.BatteryView
 import io.legado.app.utils.activity
@@ -313,8 +312,7 @@ class PageView(context: Context) : FrameLayout(context) {
 
     val textPage get() = binding.contentTextView.textPage
 
-    val selectStart: TextPos get() = binding.contentTextView.selectStart
-
     val selectedText: String get() = binding.contentTextView.getSelectedText()
 
+    val selectStartPos get() = binding.contentTextView.selectStart
 }

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

@@ -531,6 +531,17 @@ class ReadView(context: Context, attrs: AttributeSet) :
         nextPage.upBattery(battery)
     }
 
+    /**
+     * 从选择位置开始朗读
+     */
+    fun aloudStartSelect() {
+        val selectStartPos = curPage.selectStartPos
+        if (selectStartPos.relativePagePos > 0) {
+            ReadBook.moveToNextPage()
+        }
+        //TODO 未完成
+    }
+
     fun getSelectText(): String {
         return curPage.selectedText
     }

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

@@ -28,10 +28,18 @@ data class TextChapter(
 
     val pageSize: Int get() = pages.size
 
+    /**
+     * @param index 页数
+     * @return 是否是最后一页
+     */
     fun isLastIndex(index: Int): Boolean {
         return index >= pages.size - 1
     }
 
+    /**
+     * @param pageIndex 页数
+     * @return 已读长度
+     */
     fun getReadLength(pageIndex: Int): Int {
         var length = 0
         val maxIndex = min(pageIndex, pages.size)
@@ -41,10 +49,21 @@ data class TextChapter(
         return length
     }
 
+    /**
+     * @param length 当前页面文字在章节中的位置
+     * @return 下一页位置,如果没有下一页返回-1
+     */
     fun getNextPageLength(length: Int): Int {
-        return getReadLength(getPageIndexByCharIndex(length) + 1)
+        val pageIndex = getPageIndexByCharIndex(length)
+        if (pageIndex + 1 >= pageSize) {
+            return -1
+        }
+        return getReadLength(pageIndex + 1)
     }
 
+    /**
+     * @return 获取未读文字
+     */
     fun getUnRead(pageIndex: Int): String {
         val stringBuilder = StringBuilder()
         if (pages.isNotEmpty()) {
@@ -55,6 +74,9 @@ data class TextChapter(
         return stringBuilder.toString()
     }
 
+    /**
+     * 获取内容
+     */
     fun getContent(): String {
         val stringBuilder = StringBuilder()
         pages.forEach {
@@ -64,7 +86,7 @@ data class TextChapter(
     }
 
     /**
-     * 根据索引位置获取所在页
+     * @return 根据索引位置获取所在页
      */
     fun getPageIndexByCharIndex(charIndex: Int): Int {
         var length = 0