up

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

@@ -0,0 +1,57 @@
+package io.legado.app.help
+
+import android.annotation.TargetApi
+import android.content.Context
+import android.graphics.Bitmap
+import android.os.Build
+import android.renderscript.Allocation
+import android.renderscript.Element
+import android.renderscript.RenderScript
+import android.renderscript.ScriptIntrinsicBlur
+
+import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool
+import com.bumptech.glide.load.resource.bitmap.BitmapTransformation
+
+import java.security.MessageDigest
+
+class BlurTransformation(context: Context, private val radius: Int) : BitmapTransformation() {
+    private val rs: RenderScript = RenderScript.create(context)
+
+    @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
+    override fun transform(pool: BitmapPool, toTransform: Bitmap, outWidth: Int, outHeight: Int): Bitmap {
+        val blurredBitmap = toTransform.copy(Bitmap.Config.ARGB_8888, true)
+
+        // Allocate memory for Renderscript to work with
+        //分配用于渲染脚本的内存
+        val input = Allocation.createFromBitmap(
+            rs,
+            blurredBitmap,
+            Allocation.MipmapControl.MIPMAP_FULL,
+            Allocation.USAGE_SHARED
+        )
+        val output = Allocation.createTyped(rs, input.type)
+
+        // Load up an instance of the specific script that we want to use.
+        //加载我们想要使用的特定脚本的实例。
+        val script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs))
+        script.setInput(input)
+
+        // Set the blur radius
+        //设置模糊半径
+        script.setRadius(radius.toFloat())
+
+        // Start the ScriptIntrinsicBlur
+        //启动 ScriptIntrinsicBlur,
+        script.forEach(output)
+
+        // Copy the output to the blurred bitmap
+        //将输出复制到模糊的位图
+        output.copyTo(blurredBitmap)
+
+        return blurredBitmap
+    }
+
+    override fun updateDiskCacheKey(messageDigest: MessageDigest) {
+        messageDigest.update("blur transformation".toByteArray())
+    }
+}

app/src/main/java/io/legado/app/ui/bookinfo/BookInfoActivity.kt

@@ -17,7 +17,7 @@ class BookInfoActivity : VMBaseActivity<BookInfoViewModel>(R.layout.activity_boo
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         viewModel.bookData.observe(this, Observer { showBook(it) })
-        viewModel.loadData(intent)
+        viewModel.loadBook(intent)
     }
 
     private fun showBook(book: Book) {

app/src/main/java/io/legado/app/ui/bookinfo/BookInfoViewModel.kt

@@ -12,7 +12,7 @@ class BookInfoViewModel(application: Application) : BaseViewModel(application) {
     val bookData = MutableLiveData<Book>()
     var inBookshelf = false
 
-    fun loadData(intent: Intent) {
+    fun loadBook(intent: Intent) {
         execute {
             intent.getStringExtra("bookUrl")?.let {
                 App.db.bookDao().getBook(it)?.let { book ->

app/src/main/res/layout/activity_book_info.xml

@@ -38,7 +38,8 @@
             android:layout_width="match_parent"
             android:layout_height="0dp"
             android:layout_weight="1"
-            android:singleLine="true" />
+            android:singleLine="true"
+            android:textSize="16sp" />
 
         <TextView
             android:id="@+id/tv_author"
@@ -111,7 +112,7 @@
     <TextView
         android:id="@+id/tv_intro"
         android:layout_width="match_parent"
-        android:layout_height="80dp"
+        android:layout_height="106dp"
         android:layout_margin="10dp"
         android:scrollbars="vertical"
         android:textIsSelectable="true"