优化高斯模糊

sunfusheng · Jun 26, 2018 · 411dcb4 · 411dcb4
1 parent 4a64356
commit 411dcb4
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Showing 8 changed files with 64 additions and 65 deletions.
diff --git a/GlideImageView/src/main/java/com/sunfusheng/GlideImageView.java b/GlideImageView/src/main/java/com/sunfusheng/GlideImageView.java
@@ -161,15 +161,18 @@ protected void drawableStateChanged() {
         }
     }
 
-    public void setEnableState(boolean enableState) {
+    public GlideImageView enableState(boolean enableState) {
         this.enableState = enableState;
+        return this;
     }
 
-    public void setPressedAlpha(float pressedAlpha) {
+    public GlideImageView pressedAlpha(float pressedAlpha) {
         this.pressedAlpha = pressedAlpha;
+        return this;
     }
 
-    public void setUnableAlpha(float unableAlpha) {
+    public GlideImageView unableAlpha(float unableAlpha) {
         this.unableAlpha = unableAlpha;
+        return this;
     }
 }
diff --git a/GlideImageView/src/main/java/com/sunfusheng/transformation/BlurTransformation.java b/GlideImageView/src/main/java/com/sunfusheng/transformation/BlurTransformation.java
@@ -1,9 +1,12 @@
 package com.sunfusheng.transformation;
 
+import android.content.Context;
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.graphics.Paint;
+import android.os.Build;
 import android.support.annotation.NonNull;
+import android.support.annotation.RequiresApi;
 
 import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
 import com.bumptech.glide.load.resource.bitmap.BitmapTransformation;
@@ -19,24 +22,27 @@ public class BlurTransformation extends BitmapTransformation {
     private final String ID = getClass().getName();
 
     private static int MAX_RADIUS = 25;
-    private static int DEFAULT_DOWN_SAMPLING = 1;
+    private static int DEFAULT_SAMPLING = 1;
 
-    private int radius;
-    private int sampling;
+    private Context context;
+    private int radius; //模糊半径0～25
+    private int sampling; //取样0～25
 
-    public BlurTransformation() {
-        this(MAX_RADIUS, DEFAULT_DOWN_SAMPLING);
+    public BlurTransformation(Context context) {
+        this(context, MAX_RADIUS, DEFAULT_SAMPLING);
     }
 
-    public BlurTransformation(int radius) {
-        this(radius, DEFAULT_DOWN_SAMPLING);
+    public BlurTransformation(Context context, int radius) {
+        this(context, radius, DEFAULT_SAMPLING);
     }
 
-    public BlurTransformation(int radius, int sampling) {
-        this.radius = radius;
-        this.sampling = sampling;
+    public BlurTransformation(Context context, int radius, int sampling) {
+        this.context = context;
+        this.radius = radius > MAX_RADIUS ? MAX_RADIUS : radius;
+        this.sampling = sampling > MAX_RADIUS ? MAX_RADIUS : sampling;
     }
 
+    @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN_MR1)
     @Override
     protected Bitmap transform(@NonNull BitmapPool pool, @NonNull Bitmap toTransform, int outWidth, int outHeight) {
         int width = toTransform.getWidth();
@@ -50,7 +56,11 @@ protected Bitmap transform(@NonNull BitmapPool pool, @NonNull Bitmap toTransform
         Paint paint = new Paint();
         paint.setFlags(Paint.FILTER_BITMAP_FLAG);
         canvas.drawBitmap(toTransform, 0, 0, paint);
-        bitmap = BlurUtils.blur(bitmap, radius, true);
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
+            bitmap = BlurUtils.rsBlur(context, bitmap, radius);
+        } else {
+            bitmap = BlurUtils.blur(bitmap, radius);
+        }
         return bitmap;
     }
 

diff --git a/GlideImageView/src/main/java/com/sunfusheng/util/BlurUtils.java b/GlideImageView/src/main/java/com/sunfusheng/util/BlurUtils.java
@@ -1,29 +1,43 @@
 package com.sunfusheng.util;
 
+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 android.support.annotation.RequiresApi;
 
 /**
  * @author sunfusheng on 2018/6/25.
  */
 public class BlurUtils {
 
-    public static Bitmap blur(Bitmap sentBitmap, int radius, boolean canReuseInBitmap) {
-        Bitmap bitmap;
-        if (canReuseInBitmap) {
-            bitmap = sentBitmap;
-        } else {
-            bitmap = sentBitmap.copy(sentBitmap.getConfig(), true);
-        }
+    @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN_MR1)
+    public static Bitmap rsBlur(Context context, Bitmap toTransform, int radius) {
+        RenderScript renderScript = RenderScript.create(context);
+        Allocation input = Allocation.createFromBitmap(renderScript, toTransform);
+        Allocation output = Allocation.createTyped(renderScript, input.getType());
+        ScriptIntrinsicBlur scriptIntrinsicBlur = ScriptIntrinsicBlur.create(renderScript, Element.U8_4(renderScript));
+        scriptIntrinsicBlur.setInput(input);
+        scriptIntrinsicBlur.setRadius(radius);
+        scriptIntrinsicBlur.forEach(output);
+        output.copyTo(toTransform);
+        renderScript.destroy();
+        return toTransform;
+    }
 
+    public static Bitmap blur(Bitmap toTransform, int radius) {
         if (radius < 1) {
             return (null);
         }
 
-        int w = bitmap.getWidth();
-        int h = bitmap.getHeight();
+        int w = toTransform.getWidth();
+        int h = toTransform.getHeight();
 
         int[] pix = new int[w * h];
-        bitmap.getPixels(pix, 0, w, 0, 0, w, h);
+        toTransform.getPixels(pix, 0, w, 0, 0, w, h);
 
         int wm = w - 1;
         int hm = h - 1;
@@ -207,7 +221,7 @@ public static Bitmap blur(Bitmap sentBitmap, int radius, boolean canReuseInBitma
             }
         }
 
-        bitmap.setPixels(pix, 0, w, 0, 0, w, h);
-        return bitmap;
+        toTransform.setPixels(pix, 0, w, 0, 0, w, h);
+        return toTransform;
     }
 }
diff --git a/GlideImageView/src/main/res/values/style.xml b/GlideImageView/src/main/res/values/style.xml
@@ -1,17 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
 
-    <declare-styleable name="ShapeImageViewStyle">
-        <attr name="riv_border_color" format="color"/>
-        <attr name="riv_border_width" format="dimension"/>
-        <attr name="riv_corner_radius" format="dimension"/>
-        <attr name="riv_is_circle" format="boolean"/>
-        <attr name="riv_pressed_border_color" format="color"/>
-        <attr name="riv_pressed_border_width" format="dimension"/>
-        <attr name="riv_pressed_mask_color" format="color"/>
-        <attr name="riv_pressed_mode_enabled" format="boolean"/>
-    </declare-styleable>
-
     <declare-styleable name="CircleProgressView">
         <attr name="cpv_progressNormalColor" format="color"/>
         <attr name="cpv_progressReachColor" format="color"/>

diff --git a/Sample/src/main/java/com/sunfusheng/glideimageview/sample/MainActivity.java b/Sample/src/main/java/com/sunfusheng/glideimageview/sample/MainActivity.java
@@ -105,7 +105,7 @@ protected void onCreate(Bundle savedInstanceState) {
     }
 
     private void line1() {
-        image11.load(url1);
+        image11.enableState(true).load(url1);
         image12.loadCircle(url1);
         image13.load(url2, R.mipmap.image_loading);
         image14.load(url2, R.mipmap.image_loading, 10);
@@ -140,7 +140,7 @@ private void line3() {
     }
 
     private void line4() {
-        image41.fitCenter().load(url3, R.mipmap.image_loading, new BlurTransformation(25, 1));
+        image41.fitCenter().load(url3, R.mipmap.image_loading, new BlurTransformation(this, 25, 1));
 
         image41.setOnClickListener(v -> {
             Intent intent = new Intent(MainActivity.this, SingleImageActivity.class);

diff --git a/Sample/src/main/java/com/sunfusheng/glideimageview/sample/RecyclerViewActivity.java b/Sample/src/main/java/com/sunfusheng/glideimageview/sample/RecyclerViewActivity.java
@@ -52,7 +52,7 @@ public ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int viewType)
         public void onBindViewHolder(@NonNull ViewHolder viewHolder, int position) {
             NewsModel entity = list.get(position);
             viewHolder.tvTitle.setText(entity.getTitle());
-            viewHolder.imageView.load(entity.getImage_url(), R.color.placeholder);
+            viewHolder.imageView.centerCrop().load(entity.getImage_url(), R.color.placeholder);
             viewHolder.llRootView.setOnClickListener(v -> Toast.makeText(mContext, entity.getTitle(), Toast.LENGTH_SHORT).show());
         }
 

diff --git a/Sample/src/main/res/layout/item_right_image.xml b/Sample/src/main/res/layout/item_right_image.xml
@@ -2,7 +2,6 @@
 <LinearLayout
     android:id="@+id/ll_root_view"
     xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
@@ -21,32 +20,19 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_marginRight="@dimen/d2"
-            android:layout_toLeftOf="@+id/prl_image"
+            android:layout_centerVertical="true"
+            android:layout_toLeftOf="@+id/giv"
             android:ellipsize="end"
             android:maxLines="2"
             android:textColor="@color/c1"
             android:textSize="@dimen/f6"
             tools:text="标题"/>
 
-        <android.support.constraint.ConstraintLayout
-            android:id="@+id/prl_image"
-            android:layout_width="100dp"
-            android:layout_height="wrap_content"
-            android:layout_alignParentEnd="true"
-            android:layout_alignParentRight="true">
-
-            <com.sunfusheng.GlideImageView
-                android:id="@+id/giv"
-                android:layout_width="0dp"
-                android:layout_height="0dp"
-                android:scaleType="centerCrop"
-                app:layout_constraintBottom_toBottomOf="parent"
-                app:layout_constraintDimensionRatio="16:9"
-                app:layout_constraintLeft_toLeftOf="parent"
-                app:layout_constraintRight_toRightOf="parent"
-                app:layout_constraintTop_toTopOf="parent"
-                app:riv_pressed_mask_color="@color/transparent30"/>
-        </android.support.constraint.ConstraintLayout>
+        <com.sunfusheng.GlideImageView
+            android:id="@+id/giv"
+            android:layout_width="120dp"
+            android:layout_height="90dp"
+            android:layout_alignParentRight="true"/>
     </RelativeLayout>
 
     <View

diff --git a/Sample/src/main/res/layout/layout_roundimageview.xml b/Sample/src/main/res/layout/layout_roundimageview.xml
@@ -9,9 +9,6 @@
         android:id="@+id/imageView"
         android:layout_width="300dp"
         android:layout_height="300dp"
-        android:layout_centerInParent="true"
-        app:riv_is_circle="true"
-        app:riv_pressed_mask_color="@color/transparent10"
-        app:riv_pressed_mode_enabled="true"/>
+        android:layout_centerInParent="true"/>
 
 </RelativeLayout>