BlurDrawable implementation

build.gradle

@@ -5,7 +5,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:1.3.1'
+        classpath 'com.android.tools.build:gradle:2.2.2'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -20,13 +20,13 @@ allprojects {
 
 // http://www.gradle.org/docs/current/dsl/org.gradle.api.plugins.ExtraPropertiesExtension.html
 project.ext {
-    ANDROID_COMPILE_SDK_VERSION = 23
-    ANDROID_BUILD_TOOLS_VERSION = "23.0.1"
+    ANDROID_COMPILE_SDK_VERSION = 25
+    ANDROID_BUILD_TOOLS_VERSION = "25.0.0"
 
-    ANDROID_MIN_SDK_VERSION = 8
-    ANDROID_TARGET_SDK_VERSION = 23
-    ANDROID_RS_TARGET_VERSION = 23
+    ANDROID_MIN_SDK_VERSION = 9
+    ANDROID_TARGET_SDK_VERSION = 25
+    ANDROID_RS_TARGET_VERSION = 25
 
     // Google Stuffs
-    supportPackageVersion = "23.1.1"
+    supportPackageVersion = "25.0.0"
 }

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Wed Apr 10 15:27:10 PDT 2013
+#Thu Nov 10 00:05:20 EET 2016
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=http\://services.gradle.org/distributions/gradle-2.2.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-all.zip

lib/src/main/java/com/ms/square/android/etsyblur/BlurDrawable.java

@@ -0,0 +1,104 @@
+package com.ms.square.android.etsyblur;
+
+import android.content.Context;
+import android.content.res.Resources;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.ColorFilter;
+import android.graphics.Paint;
+import android.graphics.PixelFormat;
+import android.graphics.drawable.BitmapDrawable;
+import android.os.Build;
+
+/**
+ * BlurDrawable.java
+ *
+ * @author JurgisG on 2016-11-09.
+ */
+public class BlurDrawable extends BitmapDrawable {
+
+    private final Context mContext;
+    private Bitmap mBitmap;
+    private Bitmap mBlurredBitmap;
+
+    private int mBlurRadius = 5;
+    private float mBlur = 1f;
+
+    private int mAlpha = 255;
+    private ColorFilter mColorFilter;
+
+    public BlurDrawable(Context context, Resources res, Bitmap bitmap) {
+        super(res, bitmap);
+        this.mContext = context;
+        setBitmap(bitmap);
+    }
+
+    @Override
+    public void draw(Canvas canvas) {
+        if (mBitmap != null) {
+            Paint paint = new Paint();
+            paint.setAlpha(mAlpha);
+            if (mColorFilter != null) {
+                paint.setColorFilter(mColorFilter);
+            }
+            canvas.drawBitmap(mBitmap, 0, 0, paint);
+            paint.setAlpha((int) (mAlpha * mBlur));
+            canvas.drawBitmap(mBlurredBitmap, 0, 0, paint);
+        }
+    }
+
+    @Override
+    public void setAlpha(int alpha) {
+        mAlpha = alpha;
+    }
+
+    @Override
+    public void setColorFilter(ColorFilter colorFilter) {
+        mColorFilter = colorFilter;
+    }
+
+    @Override
+    public int getOpacity() {
+        return PixelFormat.UNKNOWN;
+    }
+
+    public void setBitmap(Bitmap bitmap) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR1) {
+            if (mBitmap != null && mBitmap.sameAs(bitmap)) {
+            } else {
+                mBitmap = bitmap;
+                updateBlurredBitmap();
+            }
+        } else {
+            mBitmap = bitmap;
+            updateBlurredBitmap();
+        }
+    }
+
+    private void updateBlurredBitmap() {
+        if (mBlurredBitmap != null) {
+            mBlurredBitmap.recycle();
+            mBlurredBitmap = null;
+        }
+        mBlurredBitmap = Blur.apply(mContext, mBitmap, mBlurRadius);
+        invalidateSelf();
+    }
+
+    public int getBlurRadius() {
+        return mBlurRadius;
+    }
+
+    public void setBlurRadius(int blurRadius) {
+        blurRadius = Math.min(25, Math.max(1, blurRadius));
+        if (mBlurRadius != blurRadius) {
+            this.mBlurRadius = blurRadius;
+            updateBlurredBitmap();
+        }
+    }
+
+    public void setBlur(float blur) {
+        mBlur = Math.min(1f, Math.max(0f, blur));
+        invalidateSelf();
+    }
+
+}

sample/src/main/AndroidManifest.xml

@@ -17,6 +17,9 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+        <activity
+            android:name=".BitmapDrawableActivity"
+            android:label="@string/title_blur_drawable_demo"/>
     </application>
 
 </manifest>

sample/src/main/java/com/ms/square/android/etsyblurdemo/BitmapDrawableActivity.java

@@ -0,0 +1,65 @@
+package com.ms.square.android.etsyblurdemo;
+
+import android.content.res.Resources;
+import android.graphics.Bitmap;
+import android.graphics.drawable.BitmapDrawable;
+import android.os.Bundle;
+import android.support.v4.content.ContextCompat;
+import android.support.v7.app.AppCompatActivity;
+import android.widget.ImageView;
+import android.widget.SeekBar;
+
+import com.ms.square.android.etsyblur.BlurDrawable;
+
+public class BitmapDrawableActivity extends AppCompatActivity {
+
+    private BlurDrawable drawable;
+    private SeekBar.OnSeekBarChangeListener listener1 = new SeekBar.OnSeekBarChangeListener() {
+        @Override
+        public void onProgressChanged(SeekBar seekBar, int i, boolean b) {
+        }
+
+        @Override
+        public void onStartTrackingTouch(SeekBar seekBar) {
+
+        }
+
+        @Override
+        public void onStopTrackingTouch(SeekBar seekBar) {
+            drawable.setBlurRadius(seekBar.getProgress() + 1);
+        }
+    };
+    private SeekBar.OnSeekBarChangeListener listener2 = new SeekBar.OnSeekBarChangeListener() {
+        @Override
+        public void onProgressChanged(SeekBar seekBar, int i, boolean b) {
+            drawable.setBlur(((float) i) / 100f);
+        }
+
+        @Override
+        public void onStartTrackingTouch(SeekBar seekBar) {
+
+        }
+
+        @Override
+        public void onStopTrackingTouch(SeekBar seekBar) {
+
+        }
+    };;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_bitmap_drawable);
+        ImageView mBlurView = (ImageView) findViewById(R.id.blur_view);
+        SeekBar seekBar = (SeekBar) findViewById(R.id.seek_bar);
+        seekBar.setOnSeekBarChangeListener(listener1);
+        SeekBar seekBar2 = (SeekBar) findViewById(R.id.seek_bar2);
+        seekBar2.setOnSeekBarChangeListener(listener2);
+        Resources resources = getResources();
+        Bitmap bitmap = ((BitmapDrawable) ContextCompat.getDrawable(this, R.drawable.lolipop_bg)).getBitmap();
+        drawable = new BlurDrawable(this, resources, bitmap);
+        drawable.setBlur(0f);
+        drawable.setBlurRadius(1);
+        mBlurView.setImageDrawable(drawable);
+    }
+}

sample/src/main/java/com/ms/square/android/etsyblurdemo/MainActivity.java

@@ -1,6 +1,7 @@
 package com.ms.square.android.etsyblurdemo;
 
 import android.app.Activity;
+import android.content.Intent;
 import android.os.Bundle;
 import android.support.v4.app.Fragment;
 import android.support.v4.app.FragmentManager;
@@ -45,10 +46,14 @@ protected void onCreate(Bundle savedInstanceState) {
     @Override
     public void onNavigationDrawerItemSelected(int position) {
         // update the main content by replacing fragments
-        FragmentManager fragmentManager = getSupportFragmentManager();
-        fragmentManager.beginTransaction()
-                .replace(R.id.container, PlaceholderFragment.newInstance(position + 1))
-                .commit();
+        if (position == 1){
+            startActivity(new Intent(this, BitmapDrawableActivity.class));
+        }else {
+            FragmentManager fragmentManager = getSupportFragmentManager();
+            fragmentManager.beginTransaction()
+                    .replace(R.id.container, PlaceholderFragment.newInstance(position + 1))
+                    .commit();
+        }
     }
 
     public void onSectionAttached(int number) {
@@ -126,7 +131,7 @@ public PlaceholderFragment() {
 
         @Override
         public View onCreateView(LayoutInflater inflater, ViewGroup container,
-                Bundle savedInstanceState) {
+                                 Bundle savedInstanceState) {
             View rootView = inflater.inflate(R.layout.fragment_main, container, false);
             return rootView;
         }

sample/src/main/res/layout/activity_bitmap_drawable.xml

@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/activity_bitmap_drawable"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    tools:context="com.ms.square.android.etsyblurdemo.BitmapDrawableActivity">
+
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:padding="20dp"
+        android:text="@string/blur_radius" />
+
+    <SeekBar
+        android:id="@+id/seek_bar"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:max="24" />
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:padding="20dp"
+        android:text="@string/blur_intensity" />
+
+    <SeekBar
+        android:id="@+id/seek_bar2"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:max="100" />
+
+
+    <ImageView
+        android:id="@+id/blur_view"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent" />
+
+
+</LinearLayout>

sample/src/main/res/values/strings.xml

@@ -3,10 +3,13 @@
 
     <string name="app_name">EtsyBlur Demo</string>
     <string name="title_section1">Activity Feed</string>
-    <string name="title_section2">Categories</string>
+    <string name="title_section2">Blur Drawable example</string>
     <string name="title_section3">Settings</string>
     <string name="navigation_drawer_open">Open navigation drawer</string>
     <string name="navigation_drawer_close">Close navigation drawer</string>
     <string name="action_dialog">Open Dialog</string>
+    <string name="blur_radius">Blur Radius</string>
+    <string name="blur_intensity">Blur Intensity</string>
+    <string name="title_blur_drawable_demo">Blur Drawable Demo</string>
 
 </resources>