优化

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

@@ -171,18 +171,19 @@ class ContentTextView(context: Context, attrs: AttributeSet?) : View(context, at
             book,
             textChar.charData,
             ReadBook.bookSource,
-            true
-        )?.let {
+            (textChar.end - textChar.start).toInt(),
+            (lineBottom - lineTop).toInt()
+        )?.let { bitmap ->
             val rectF = if (isImageLine) {
                 RectF(textChar.start, lineTop, textChar.end, lineBottom)
             } else {
                 /*以宽度为基准保持图片的原始比例叠加，当div为负数时，允许高度比字符更高*/
-                val h = (textChar.end - textChar.start) / it.width * it.height
+                val h = (textChar.end - textChar.start) / bitmap.width * bitmap.height
                 val div = (lineBottom - lineTop - h) / 2
                 RectF(textChar.start, lineTop + div, textChar.end, lineBottom - div)
             }
             kotlin.runCatching {
-                canvas.drawBitmap(it, null, rectF, null)
+                canvas.drawBitmap(bitmap, null, rectF, null)
             }.onFailure { e ->
                 context.toastOnUi(e.localizedMessage)
             }

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

@@ -66,41 +66,54 @@ object ImageProvider {
         }
     }
 
-    suspend fun getImage(
+    fun getImage(
         book: Book,
         src: String,
         bookSource: BookSource?,
-        onUi: Boolean = false,
+        width: Int,
+        height: Int
     ): Bitmap? {
-        val vFile = BookHelp.getImage(book, src)
-        if (!vFile.exists()) {
-            if (book.isEpub()) {
-                EpubFile.getImage(book, src)?.use { input ->
-                    val newFile = FileUtils.createFileIfNotExist(vFile.absolutePath)
-                    FileOutputStream(newFile).use { output ->
-                        input.copyTo(output)
-                    }
-                }
-            } else if (!onUi) {
-                runBlocking {
-                    BookHelp.saveImage(bookSource, book, src)
+        val vFile = runBlocking {
+            cacheImage(book, src, bookSource)
+        }
+        return try {
+            ImageLoader.loadBitmap(appCtx, vFile.absolutePath)
+                .submit(width, height)
+                .get()
+        } catch (e: Exception) {
+            Coroutine.async {
+                putDebug("${vFile.absolutePath} 解码失败", e)
+                if (FileUtils.readText(vFile.absolutePath).isXml()) {
+                    putDebug("${vFile.absolutePath}为xml，自动删除")
+                    vFile.delete()
                 }
             }
+            errorBitmap
         }
-       return try {
+    }
+
+    fun getImage(
+        book: Book,
+        src: String,
+        bookSource: BookSource?
+    ): Bitmap? {
+        val vFile = runBlocking {
+            cacheImage(book, src, bookSource)
+        }
+        return try {
             ImageLoader.loadBitmap(appCtx, vFile.absolutePath)
-                .submit(ChapterProvider.visibleWidth,ChapterProvider.visibleHeight)
+                .submit(ChapterProvider.visibleWidth, ChapterProvider.visibleHeight)
                 .get()
-       } catch (e: Exception) {
-           Coroutine.async {
-               putDebug("${vFile.absolutePath} 解码失败", e)
-               if (FileUtils.readText(vFile.absolutePath).isXml()) {
-                   putDebug("${vFile.absolutePath}为xml，自动删除")
-                   vFile.delete()
-               }
-           }
-           errorBitmap
-       }
+        } catch (e: Exception) {
+            Coroutine.async {
+                putDebug("${vFile.absolutePath} 解码失败", e)
+                if (FileUtils.readText(vFile.absolutePath).isXml()) {
+                    putDebug("${vFile.absolutePath}为xml，自动删除")
+                    vFile.delete()
+                }
+            }
+            errorBitmap
+        }
     }
 
 }