epub 显示图片,未完善

app/src/main/java/io/legado/app/help/JsExtensions.kt

@@ -41,11 +41,11 @@ interface JsExtensions {
         return EncoderUtils.base64Encode(str, flags)
     }
 
-    fun md5Encode(str: String): String? {
+    fun md5Encode(str: String): String {
         return MD5Utils.md5Encode(str)
     }
 
-    fun md5Encode16(str: String): String? {
+    fun md5Encode16(str: String): String {
         return MD5Utils.md5Encode16(str)
     }
 

app/src/main/java/io/legado/app/help/http/HttpHelper.kt

@@ -49,6 +49,17 @@ object HttpHelper {
         return null
     }
 
+    fun getBytes(url: String): ByteArray? {
+        NetworkUtils.getBaseUrl(url)?.let { baseUrl ->
+            return getByteRetrofit(baseUrl)
+                .create(HttpGetApi::class.java)
+                .getMapByte(url, mapOf(), mapOf(Pair(AppConst.UA_NAME, AppConst.userAgent)))
+                .execute()
+                .body()
+        }
+        return null
+    }
+
     suspend fun simpleGetAsync(url: String, encode: String? = null): String? {
         NetworkUtils.getBaseUrl(url)?.let { baseUrl ->
             val response = getApiService<HttpGetApi>(baseUrl, encode)
@@ -58,7 +69,7 @@ object HttpHelper {
         return null
     }
 
-    suspend fun simpleGetByteAsync(url: String): ByteArray? {
+    suspend fun simpleGetBytesAsync(url: String): ByteArray? {
         NetworkUtils.getBaseUrl(url)?.let { baseUrl ->
             return getByteRetrofit(baseUrl)
                 .create(HttpGetApi::class.java)

app/src/main/java/io/legado/app/help/http/api/HttpGetApi.kt

@@ -39,6 +39,13 @@ interface HttpGetApi {
         @HeaderMap headers: Map<String, String>
     ): Call<String>
 
+    @GET
+    fun getMapByte(
+        @Url url: String,
+        @QueryMap(encoded = true) queryMap: Map<String, String>,
+        @HeaderMap headers: Map<String, String>
+    ): Call<ByteArray>
+
     @GET
     suspend fun getMapByteAsync(
         @Url url: String,

app/src/main/java/io/legado/app/model/localBook/EPUBFile.kt

@@ -6,7 +6,10 @@ import android.net.Uri
 import android.text.TextUtils
 import io.legado.app.App
 import io.legado.app.data.entities.BookChapter
-import io.legado.app.utils.*
+import io.legado.app.utils.FileUtils
+import io.legado.app.utils.MD5Utils
+import io.legado.app.utils.externalFilesDir
+import io.legado.app.utils.isContentPath
 import nl.siegmann.epublib.domain.Book
 import nl.siegmann.epublib.domain.TOCReference
 import nl.siegmann.epublib.epub.EpubReader
@@ -14,6 +17,7 @@ import org.jsoup.Jsoup
 import java.io.File
 import java.io.FileOutputStream
 import java.io.IOException
+import java.io.InputStream
 import java.nio.charset.Charset
 import java.util.*
 
@@ -21,7 +25,6 @@ class EPUBFile(val book: io.legado.app.data.entities.Book) {
 
     companion object {
         private var eFile: EPUBFile? = null
-        private val coverDir = App.INSTANCE.externalFilesDir
 
         @Synchronized
         private fun getEFile(book: io.legado.app.data.entities.Book): EPUBFile {
@@ -41,6 +44,14 @@ class EPUBFile(val book: io.legado.app.data.entities.Book) {
         fun getContent(book: io.legado.app.data.entities.Book, chapter: BookChapter): String? {
             return getEFile(book).getContent(chapter)
         }
+
+        @Synchronized
+        fun getImage(
+            book: io.legado.app.data.entities.Book,
+            href: String
+        ): InputStream? {
+            return getEFile(book).getImage(href)
+        }
     }
 
     private var epubBook: Book? = null
@@ -64,13 +75,12 @@ class EPUBFile(val book: io.legado.app.data.entities.Book) {
                 )
             }
             if (!File(book.coverUrl!!).exists()) {
-                epubBook!!.coverImage?.inputStream?.let {
+                epubBook!!.coverImage?.inputStream?.use {
                     val cover = BitmapFactory.decodeStream(it)
                     val out = FileOutputStream(FileUtils.createFileIfNotExist(book.coverUrl!!))
                     cover.compress(Bitmap.CompressFormat.JPEG, 90, out)
                     out.flush()
                     out.close()
-                    it.close()
                 }
             }
         } catch (e: Exception) {
@@ -81,30 +91,20 @@ class EPUBFile(val book: io.legado.app.data.entities.Book) {
     private fun getContent(chapter: BookChapter): String? {
         epubBook?.let { eBook ->
             val resource = eBook.resources.getByHref(chapter.url)
-            val content = StringBuilder()
             val doc = Jsoup.parse(String(resource.data, mCharset))
-            val elements = doc.body().allElements
-            for (element in elements) {
-                val contentEs = element.textNodes()
-                for (i in contentEs.indices) {
-                    val text = contentEs[i].text().trim { it <= ' ' }.htmlFormat()
-                    if (elements.size > 1) {
-                        if (text.isNotEmpty()) {
-                            if (content.isNotEmpty()) {
-                                content.append("\r\n")
-                            }
-                            content.append("\u3000\u3000").append(text)
-                        }
-                    } else {
-                        content.append(text)
-                    }
-                }
-            }
-            return content.toString()
+            val elements = doc.body().children()
+            elements.select("script, style").remove()
+            return elements.outerHtml()
+                .replace("</?(?:div|p|b|br|hr|h\\d|article|dd|dl)[^>]*>".toRegex(), "\n")
         }
         return null
     }
 
+    private fun getImage(href: String): InputStream? {
+        val abHref = href.replace("../", "")
+        return epubBook?.resources?.getByHref(abHref)?.inputStream
+    }
+
     private fun getChapterList(): ArrayList<BookChapter> {
         val chapterList = ArrayList<BookChapter>()
         epubBook?.let { eBook ->

app/src/main/java/io/legado/app/service/help/ReadBook.kt

@@ -211,7 +211,7 @@ object ReadBook {
                 Coroutine.async {
                     App.db.bookChapterDao().getChapter(book.bookUrl, index)?.let { chapter ->
                         BookHelp.getContent(book, chapter)?.let {
-                            contentLoadFinish(chapter, it, upContent, resetPageOffset)
+                            contentLoadFinish(book, chapter, it, upContent, resetPageOffset)
                             removeLoading(chapter.index)
                         } ?: download(chapter, resetPageOffset = resetPageOffset)
                     } ?: removeLoading(index)
@@ -247,6 +247,7 @@ object ReadBook {
                 ?.onSuccess(Dispatchers.IO) { content ->
                     if (content.isEmpty()) {
                         contentLoadFinish(
+                            book,
                             chapter,
                             App.INSTANCE.getString(R.string.content_empty),
                             resetPageOffset = resetPageOffset
@@ -254,11 +255,12 @@ object ReadBook {
                         removeLoading(chapter.index)
                     } else {
                         BookHelp.saveContent(book, chapter, content)
-                        contentLoadFinish(chapter, content, resetPageOffset = resetPageOffset)
+                        contentLoadFinish(book, chapter, content, resetPageOffset = resetPageOffset)
                         removeLoading(chapter.index)
                     }
                 }?.onError {
                     contentLoadFinish(
+                        book,
                         chapter,
                         it.localizedMessage ?: "未知错误",
                         resetPageOffset = resetPageOffset
@@ -286,6 +288,7 @@ object ReadBook {
      * 内容加载完成
      */
     private fun contentLoadFinish(
+        book: Book,
         chapter: BookChapter,
         content: String,
         upContent: Boolean = true,
@@ -300,15 +303,15 @@ object ReadBook {
                 }
                 val contents = BookHelp.disposeContent(
                     chapter.title,
-                    book!!.name,
+                    book.name,
                     webBook?.bookSource?.bookSourceUrl,
                     content,
-                    book!!.useReplaceRule
+                    book.useReplaceRule
                 )
                 when (chapter.index) {
                     durChapterIndex -> {
                         curTextChapter =
-                            ChapterProvider.getTextChapter(chapter, contents, chapterSize)
+                            ChapterProvider.getTextChapter(book, chapter, contents, chapterSize)
                         if (upContent) callBack?.upContent(resetPageOffset = resetPageOffset)
                         callBack?.upView()
                         curPageChanged()
@@ -316,12 +319,12 @@ object ReadBook {
                     }
                     durChapterIndex - 1 -> {
                         prevTextChapter =
-                            ChapterProvider.getTextChapter(chapter, contents, chapterSize)
+                            ChapterProvider.getTextChapter(book, chapter, contents, chapterSize)
                         if (upContent) callBack?.upContent(-1, resetPageOffset)
                     }
                     durChapterIndex + 1 -> {
                         nextTextChapter =
-                            ChapterProvider.getTextChapter(chapter, contents, chapterSize)
+                            ChapterProvider.getTextChapter(book, chapter, contents, chapterSize)
                         if (upContent) callBack?.upContent(1, resetPageOffset)
                     }
                 }

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

@@ -8,6 +8,7 @@ import android.text.TextPaint
 import android.text.TextUtils
 import io.legado.app.App
 import io.legado.app.constant.PreferKey
+import io.legado.app.data.entities.Book
 import io.legado.app.data.entities.BookChapter
 import io.legado.app.help.AppConfig
 import io.legado.app.help.ReadBookConfig
@@ -15,6 +16,7 @@ import io.legado.app.ui.book.read.page.entities.TextChapter
 import io.legado.app.ui.book.read.page.entities.TextLine
 import io.legado.app.ui.book.read.page.entities.TextPage
 import io.legado.app.utils.*
+import java.util.regex.Pattern
 
 
 @Suppress("DEPRECATION")
@@ -34,6 +36,7 @@ object ChapterProvider {
     var typeface: Typeface = Typeface.SANS_SERIF
     lateinit var titlePaint: TextPaint
     lateinit var contentPaint: TextPaint
+    private val srcPattern = Pattern.compile("<img .*?src=\"(.*?)\".*?>", Pattern.CASE_INSENSITIVE)
 
     init {
         upStyle()
@@ -43,6 +46,7 @@ object ChapterProvider {
      * 获取拆分完的章节数据
      */
     fun getTextChapter(
+        book: Book,
         bookChapter: BookChapter,
         contents: List<String>,
         chapterSize: Int
@@ -54,6 +58,20 @@ object ChapterProvider {
         var durY = 0f
         textPages.add(TextPage())
         contents.forEachIndexed { index, text ->
+            val matcher = srcPattern.matcher(text)
+            if (matcher.find()) {
+                var src = matcher.group(1)
+                if (!book.isEpub()) {
+                    src = NetworkUtils.getAbsoluteURL(bookChapter.url, src)
+                }
+                src?.let {
+                    durY = setTypeImage(
+                        book, src, durY,
+                        textPages, pageLines,
+                        pageLengths, stringBuilder
+                    )
+                }
+            } else {
                 val isTitle = index == 0
                 if (!(isTitle && ReadBookConfig.titleMode == 2)) {
                     durY = setTypeText(
@@ -62,6 +80,7 @@ object ChapterProvider {
                     )
                 }
             }
+        }
         textPages.last().height = durY + 20.dp
         textPages.last().text = stringBuilder.toString()
         if (pageLines.size < textPages.size) {
@@ -90,6 +109,26 @@ object ChapterProvider {
         )
     }
 
+    private fun setTypeImage(
+        book: Book,
+        src: String,
+        y: Float,
+        textPages: ArrayList<TextPage>,
+        pageLines: ArrayList<Int>,
+        pageLengths: ArrayList<Int>,
+        stringBuilder: StringBuilder
+    ): Float {
+        var durY = y
+        ImageProvider.getImage(book, src)?.let {
+            val textLine = TextLine(text = src, isImage = true)
+            textLine.lineTop = durY
+            durY += it.height
+            textLine.lineBottom = durY
+            textPages.last().textLines.add(textLine)
+        }
+        return durY + paragraphSpacing / 10f
+    }
+
     /**
      * 排版文字
      */

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

@@ -10,7 +10,9 @@ import io.legado.app.R
 import io.legado.app.constant.PreferKey
 import io.legado.app.help.ReadBookConfig
 import io.legado.app.lib.theme.accentColor
+import io.legado.app.service.help.ReadBook
 import io.legado.app.ui.book.read.page.entities.TextChar
+import io.legado.app.ui.book.read.page.entities.TextLine
 import io.legado.app.ui.book.read.page.entities.TextPage
 import io.legado.app.utils.activity
 import io.legado.app.utils.getCompatColor
@@ -78,18 +80,7 @@ class ContentTextView(context: Context, attrs: AttributeSet?) : View(context, at
     private fun drawPage(canvas: Canvas) {
         var relativeOffset = relativeOffset(0)
         textPage.textLines.forEach { textLine ->
-            val lineTop = textLine.lineTop + relativeOffset
-            val lineBase = textLine.lineBase + relativeOffset
-            val lineBottom = textLine.lineBottom + relativeOffset
-            drawChars(
-                canvas,
-                textLine.textChars,
-                lineTop,
-                lineBase,
-                lineBottom,
-                textLine.isTitle,
-                textLine.isReadAloud
-            )
+            draw(canvas, textLine, relativeOffset)
         }
         if (!ReadBookConfig.isScroll) return
         //滚动翻页
@@ -97,38 +88,39 @@ class ContentTextView(context: Context, attrs: AttributeSet?) : View(context, at
         val nextPage = relativePage(1)
         relativeOffset = relativeOffset(1)
         nextPage.textLines.forEach { textLine ->
-            val lineTop = textLine.lineTop + relativeOffset
-            val lineBase = textLine.lineBase + relativeOffset
-            val lineBottom = textLine.lineBottom + relativeOffset
-            drawChars(
-                canvas,
-                textLine.textChars,
-                lineTop,
-                lineBase,
-                lineBottom,
-                textLine.isTitle,
-                textLine.isReadAloud
-            )
+            draw(canvas, textLine, relativeOffset)
         }
         if (!pageFactory.hasNextPlus()) return
         relativeOffset = relativeOffset(2)
         if (relativeOffset < ChapterProvider.visibleHeight) {
             relativePage(2).textLines.forEach { textLine ->
+                draw(canvas, textLine, relativeOffset)
+            }
+        }
+    }
+
+    private fun draw(
+        canvas: Canvas,
+        textLine: TextLine,
+        relativeOffset: Float
+    ) {
         val lineTop = textLine.lineTop + relativeOffset
         val lineBase = textLine.lineBase + relativeOffset
         val lineBottom = textLine.lineBottom + relativeOffset
+        if (textLine.isImage) {
+            drawImage(canvas, textLine, lineTop, lineBottom)
+        } else {
             drawChars(
                 canvas,
                 textLine.textChars,
                 lineTop,
                 lineBase,
                 lineBottom,
-                    textLine.isTitle,
-                    textLine.isReadAloud
+                isTitle = textLine.isTitle,
+                isReadAloud = textLine.isReadAloud
             )
         }
     }
-    }
 
     /**
      * 绘制文字
@@ -153,6 +145,20 @@ class ContentTextView(context: Context, attrs: AttributeSet?) : View(context, at
         }
     }
 
+    /**
+     * 绘制图片
+     */
+    private fun drawImage(
+        canvas: Canvas,
+        textLine: TextLine,
+        lineTop: Float,
+        lineBottom: Float
+    ) {
+        ImageProvider.getImage(ReadBook.book!!, textLine.text)?.let {
+            canvas.drawBitmap(it, ChapterProvider.paddingLeft.toFloat(), lineTop, null)
+        }
+    }
+
     /**
      * 滚动事件
      */

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

@@ -0,0 +1,46 @@
+package io.legado.app.ui.book.read.page
+
+import android.graphics.Bitmap
+import io.legado.app.App
+import io.legado.app.data.entities.Book
+import io.legado.app.help.http.HttpHelper
+import io.legado.app.model.localBook.EPUBFile
+import io.legado.app.utils.BitmapUtils
+import io.legado.app.utils.FileUtils
+import io.legado.app.utils.MD5Utils
+import io.legado.app.utils.externalFilesDir
+import java.io.FileOutputStream
+
+object ImageProvider {
+
+
+    fun getImage(book: Book, src: String): Bitmap? {
+        val vFile = FileUtils.getFile(
+            App.INSTANCE.externalFilesDir,
+            "${MD5Utils.md5Encode16(src)}.jpg",
+            "images", book.name
+        )
+        if (!vFile.exists()) {
+            if (book.isEpub()) {
+                EPUBFile.getImage(book, src).use {
+                    val out = FileOutputStream(FileUtils.createFileIfNotExist(vFile.absolutePath))
+                    it?.copyTo(out)
+                    out.flush()
+                    out.close()
+                }
+            } else {
+                HttpHelper.getBytes(src)
+            }
+        }
+        return try {
+            BitmapUtils.decodeBitmap(
+                vFile.absolutePath,
+                ChapterProvider.visibleWidth,
+                ChapterProvider.visibleHeight
+            )
+        } catch (e: Exception) {
+            null
+        }
+    }
+
+}

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

@@ -11,6 +11,7 @@ data class TextLine(
     var lineBase: Float = 0f,
     var lineBottom: Float = 0f,
     val isTitle: Boolean = false,
+    val isImage: Boolean = false,
     var isReadAloud: Boolean = false
 ) {
 

app/src/main/java/io/legado/app/ui/rss/read/ReadRssViewModel.kt

@@ -131,7 +131,7 @@ class ReadRssViewModel(application: Application) : BaseViewModel(application),
 
     private suspend fun webData2bitmap(data: String): ByteArray? {
         return if (URLUtil.isValidUrl(data)) {
-            HttpHelper.simpleGetByteAsync(data)
+            HttpHelper.simpleGetBytesAsync(data)
         } else {
             Base64.decode(data.split(",").toTypedArray()[1], Base64.DEFAULT)
         }

app/src/main/java/io/legado/app/utils/MD5Utils.kt

@@ -9,15 +9,15 @@ import java.security.NoSuchAlgorithmException
 @Suppress("unused")
 object MD5Utils {
 
-    fun md5Encode(str: String?): String? {
-        if (str == null) return null
-        var reStr: String? = null
+    fun md5Encode(str: String?): String {
+        if (str == null) return ""
+        var reStr = ""
         try {
-            val md5:MessageDigest = MessageDigest.getInstance("MD5")
-            val bytes:ByteArray = md5.digest(str.toByteArray())
-            val stringBuffer:StringBuilder = StringBuilder()
+            val md5: MessageDigest = MessageDigest.getInstance("MD5")
+            val bytes: ByteArray = md5.digest(str.toByteArray())
+            val stringBuffer: StringBuilder = StringBuilder()
             for (b in bytes) {
-                val bt:Int = b.toInt() and 0xff
+                val bt: Int = b.toInt() and 0xff
                 if (bt < 16) {
                     stringBuffer.append(0)
                 }
@@ -31,11 +31,9 @@ object MD5Utils {
         return reStr
     }
 
-    fun md5Encode16(str: String): String? {
+    fun md5Encode16(str: String): String {
         var reStr = md5Encode(str)
-        if (reStr != null) {
         reStr = reStr.substring(8, 24)
-        }
         return reStr
     }
 }