From 1501db3c48ba7a540aeacbc1b895a552b288561c Mon Sep 17 00:00:00 2001
From: Anu6is <curtis.mayers@gmail.com>
Date: Sun, 9 Feb 2014 18:03:00 -0600
Subject: [PATCH] Lockscreen Wallpaper

Custom lockscreen

Accessible via launcher wallpaper selector and
Settings - Display - Wallpaper - Lock screen

Change-Id: I2e4722d1a6d4ba80a3c656306ceb251d630a8e21

Conflicts:
	packages/Keyguard/src/com/android/keyguard/KeyguardViewManager.java

Themes: Keyguard: Fix NPE setting lockscreen wallpaper

After boot the view might not be laid out and so getWidth() and
getHeight() return 0 and will cause a NullPointerException in
createBitmap().

Bug AOSPA-448

Change-Id: Ibacf4199a69709dc34d21695732c2a5360533a23
Signed-off-by: Dirk Rettschlag <dirk.rettschlag@gmail.com>

Keyguard: fix NPE setting lockscreen wallpaper

Continue previous patchset (check history)

------- Cherry-picked commit -------

After boot the view might not be laid out and so getWidth() and
getHeight() return 0 and will cause a NullPointerException in
createBitmap().

Signed-off-by: Dirk Rettschlag <dirk.rettschlag@gmail.com>
---
 .../android/keyguard/KeyguardViewManager.java |  58 ++-
 packages/WallpaperCropper/AndroidManifest.xml |  14 +
 .../res/layout/actionbar_set_lockscreen.xml   |  34 ++
 .../res/layout/blur_dialog.xml                |  32 ++
 .../res/layout/lockscreen_main.xml            |  59 +++
 .../mipmap-hdpi/ic_lockscreen_wallpaper.png   | Bin 0 -> 4418 bytes
 .../mipmap-mdpi/ic_lockscreen_wallpaper.png   | Bin 0 -> 2871 bytes
 .../mipmap-xhdpi/ic_lockscreen_wallpaper.png  | Bin 0 -> 6061 bytes
 .../mipmap-xxhdpi/ic_lockscreen_wallpaper.png | Bin 0 -> 7596 bytes
 .../res/values/pa_strings.xml                 |  25 ++
 .../wallpapercropper/LockscreenWallpaper.java | 418 ++++++++++++++++++
 11 files changed, 638 insertions(+), 2 deletions(-)
 create mode 100644 packages/WallpaperCropper/res/layout/actionbar_set_lockscreen.xml
 create mode 100644 packages/WallpaperCropper/res/layout/blur_dialog.xml
 create mode 100644 packages/WallpaperCropper/res/layout/lockscreen_main.xml
 create mode 100644 packages/WallpaperCropper/res/mipmap-hdpi/ic_lockscreen_wallpaper.png
 create mode 100644 packages/WallpaperCropper/res/mipmap-mdpi/ic_lockscreen_wallpaper.png
 create mode 100644 packages/WallpaperCropper/res/mipmap-xhdpi/ic_lockscreen_wallpaper.png
 create mode 100644 packages/WallpaperCropper/res/mipmap-xxhdpi/ic_lockscreen_wallpaper.png
 create mode 100644 packages/WallpaperCropper/res/values/pa_strings.xml
 create mode 100644 packages/WallpaperCropper/src/com/android/wallpapercropper/LockscreenWallpaper.java

diff --git a/packages/Keyguard/src/com/android/keyguard/KeyguardViewManager.java b/packages/Keyguard/src/com/android/keyguard/KeyguardViewManager.java
index b09bdc045655..1773c056d683 100644
--- a/packages/Keyguard/src/com/android/keyguard/KeyguardViewManager.java
+++ b/packages/Keyguard/src/com/android/keyguard/KeyguardViewManager.java
@@ -18,6 +18,7 @@
 package com.android.keyguard;
 
 import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
 import android.graphics.drawable.BitmapDrawable;
 import android.graphics.drawable.ColorDrawable;
 import android.graphics.drawable.TransitionDrawable;
@@ -31,6 +32,7 @@
 import android.content.ContentResolver;
 import android.content.Context;
 import android.content.Intent;
+import android.content.IntentFilter;
 import android.content.pm.ActivityInfo;
 import android.content.res.Configuration;
 import android.content.res.Resources;
@@ -68,6 +70,8 @@
 import android.view.WindowManager;
 import android.widget.FrameLayout;
 
+import java.io.File;
+
 /**
  * Manages creating, showing, hiding and resetting the keyguard.  Calls back
  * via {@link KeyguardViewMediator.ViewMediatorCallback} to poke
@@ -78,6 +82,8 @@ public class KeyguardViewManager {
     private final static boolean DEBUG = KeyguardViewMediator.DEBUG;
     private static String TAG = "KeyguardViewManager";
     public final static String IS_SWITCHING_USER = "is_switching_user";
+    private static final String INTENT_LOCKSCREEN_WALLPAPER_CHANGED = "lockscreen_changed";
+    private static final String LOCKSCREEN_IMAGE_FILE = "/lockwallpaper.sav";
 
     // Delay dismissing keyguard to allow animations to complete.
     private static final int HIDE_KEYGUARD_DELAY = 500;
@@ -99,7 +105,9 @@ public class KeyguardViewManager {
 
     private ViewManagerHost mKeyguardHost;
     private KeyguardHostView mKeyguardView;
+    private WallpaperObserver mReceiver;
 
+    private boolean mBackgroundInitialized;
     private boolean mScreenOn = false;
     private LockPatternUtils mLockPatternUtils;
 
@@ -109,9 +117,37 @@ public class KeyguardViewManager {
     private boolean mLockscreenNotifications = false;
 
     private Bitmap mBlurredImage = null;
+    private Bitmap mLockscreenBackground;
     private boolean mRotated = false;
     private int mLastRotation = 0;
 
+    class WallpaperObserver extends BroadcastReceiver {
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            String action = intent.getAction();
+            if (action.equals(INTENT_LOCKSCREEN_WALLPAPER_CHANGED)) {
+                customLockscreen();
+            }
+        }
+    }
+
+    private void customLockscreen() {
+        mLockscreenBackground = null;
+        String path =  mContext.getExternalCacheDir().getAbsolutePath();
+        path = path.replace("com.android.keyguard", "com.android.wallpapercropper");
+        File file = new File(path + LOCKSCREEN_IMAGE_FILE);
+        if (file.exists()) {
+            mLockscreenBackground = BitmapFactory.decodeFile(file.getAbsolutePath());
+        }
+    }
+
+    private void registerWallpaperReceiver() {
+        IntentFilter filter = new IntentFilter();
+        filter.addAction(INTENT_LOCKSCREEN_WALLPAPER_CHANGED);
+        mReceiver = new WallpaperObserver();
+        mContext.registerReceiver(mReceiver, filter);
+    }
+
     private KeyguardUpdateMonitorCallback mBackgroundChanger = new KeyguardUpdateMonitorCallback() {
         @Override
         public void onSetBackground(Bitmap bmp) {
@@ -283,6 +319,22 @@ public int getOpacity() {
 
         public ViewManagerHost(Context context) {
             super(context);
+            registerWallpaperReceiver();
+            customLockscreen();
+
+            if (mLockscreenBackground == null) {
+                initBackground();
+            } else {
+                Drawable customLockscreen = new BitmapDrawable(mContext.getResources(),
+                                        mLockscreenBackground);
+                setBackground(customLockscreen);
+                mBackgroundInitialized = false;
+            }
+
+        }
+
+        public void initBackground() {
+            mBackgroundInitialized = true;
             setBackground(mBackgroundDrawable);
         }
 
@@ -317,6 +369,7 @@ public void drawToCanvas(Canvas canvas, Drawable drawable) {
         }
 
         public void setCustomBackground(Drawable d) {
+            if (!isLaidOut()) return;
             if (!ActivityManager.isHighEndGfx() || !mScreenOn) {
                 mCustomBackground = d;
                 if (d != null) {
@@ -498,8 +551,8 @@ private void maybeCreateKeyguardLocked(int rotationAngles, boolean force,
 
         mKeyguardHost.restoreHierarchyState(mStateContainer);
 
-        if (mBlurredImage != null) {
-            setCustomBackground(mBlurredImage);
+        if (mBlurredImage != null || mLockscreenBackground != null) {
+            setCustomBackground(mBlurredImage == null ? mLockscreenBackground : mBlurredImage);
         }
     }
 
@@ -724,6 +777,7 @@ public synchronized void hide() {
         }
 
         if (mKeyguardHost != null) {
+            if (!mBackgroundInitialized) mKeyguardHost.initBackground();
             mKeyguardHost.setVisibility(View.GONE);
 
             // We really only want to preserve keyguard state for configuration changes. Hence
diff --git a/packages/WallpaperCropper/AndroidManifest.xml b/packages/WallpaperCropper/AndroidManifest.xml
index 27755bd2c7cc..9fbc23d514c5 100644
--- a/packages/WallpaperCropper/AndroidManifest.xml
+++ b/packages/WallpaperCropper/AndroidManifest.xml
@@ -2,6 +2,9 @@
         package="com.android.wallpapercropper" >
         <uses-permission android:name="android.permission.SET_WALLPAPER" />
         <uses-permission android:name="android.permission.SET_WALLPAPER_HINTS" />
+        <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+        <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+        <uses-permission android:name="android.permission.WRITE_SETTINGS" />
 
         <application android:requiredForAllUsers="true">
         <activity
@@ -15,5 +18,16 @@
                 <category android:name="android.intent.category.DEFAULT" />
             </intent-filter>
         </activity>
+        <activity
+            android:name="LockscreenWallpaper"
+            android:theme="@style/Theme.WallpaperCropper"
+            android:label="@string/pick_lockscreen"
+            android:icon="@mipmap/ic_lockscreen_wallpaper"
+            android:finishOnCloseSystemDialogs="true">
+            <intent-filter>
+                <action android:name="android.intent.action.SET_WALLPAPER" />
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
+        </activity>
         </application>
 </manifest>
diff --git a/packages/WallpaperCropper/res/layout/actionbar_set_lockscreen.xml b/packages/WallpaperCropper/res/layout/actionbar_set_lockscreen.xml
new file mode 100644
index 000000000000..f7b9edc61e3b
--- /dev/null
+++ b/packages/WallpaperCropper/res/layout/actionbar_set_lockscreen.xml
@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+**
+** Copyright 2013, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+-->
+
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    style="?android:actionButtonStyle"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent" >
+    <TextView style="?android:actionBarTabTextStyle"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="start|center_vertical"
+        android:paddingRight="20dp"
+        android:drawableLeft="@drawable/ic_actionbar_accept"
+        android:drawablePadding="8dp"
+        android:gravity="center_vertical"
+        android:text="@string/lockscreen_instructions" />
+</FrameLayout>
diff --git a/packages/WallpaperCropper/res/layout/blur_dialog.xml b/packages/WallpaperCropper/res/layout/blur_dialog.xml
new file mode 100644
index 000000000000..00b223ba4632
--- /dev/null
+++ b/packages/WallpaperCropper/res/layout/blur_dialog.xml
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+**
+** Copyright 2014, ParanoidAndroid Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+-->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/blur_dialog"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+    <SeekBar
+        android:id="@+id/blur_seekbar"
+        android:layout_width="fill_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="14dp"
+        android:progress="16"
+        android:max="25" />
+</LinearLayout>
diff --git a/packages/WallpaperCropper/res/layout/lockscreen_main.xml b/packages/WallpaperCropper/res/layout/lockscreen_main.xml
new file mode 100644
index 000000000000..1aa3db6f9065
--- /dev/null
+++ b/packages/WallpaperCropper/res/layout/lockscreen_main.xml
@@ -0,0 +1,59 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+**
+** Copyright 2014, ParanoidAndroid Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+-->
+
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/lockscreen_root"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content">
+    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+        <ImageView android:id="@+id/picker_background"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:adjustViewBounds="true"
+        />
+    </LinearLayout>
+    <ImageView android:id="@+id/lockscreen_preview"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+    />
+    <Button
+        android:id="@+id/lockscreen_reset"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignParentLeft="true"
+        android:layout_alignParentBottom="true"
+        android:text="@string/lockscreen_reset" />
+    <Button
+        android:id="@+id/lockscreen_select"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_centerHorizontal="true"
+        android:layout_alignParentBottom="true"
+        android:text="@string/lockscreen_select" />
+    <Button
+        android:id="@+id/lockscreen_blur"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignParentRight="true"
+        android:layout_alignParentBottom="true"
+        android:text="@string/lockscreen_blur" />
+</RelativeLayout>
diff --git a/packages/WallpaperCropper/res/mipmap-hdpi/ic_lockscreen_wallpaper.png b/packages/WallpaperCropper/res/mipmap-hdpi/ic_lockscreen_wallpaper.png
new file mode 100644
index 0000000000000000000000000000000000000000..affee851d77776d4459d7620c1b4d5ac04f587b7
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diff --git a/packages/WallpaperCropper/res/values/pa_strings.xml b/packages/WallpaperCropper/res/values/pa_strings.xml
new file mode 100644
index 000000000000..326c9682ba30
--- /dev/null
+++ b/packages/WallpaperCropper/res/values/pa_strings.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2013 ParanoidAndroid Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
+    <string name="pick_lockscreen">Lock screen</string>
+    <string name="lockscreen_reset">Reset</string>
+    <string name="lockscreen_select">Browse</string>
+    <string name="lockscreen_blur">Blur</string>
+    <string name="blur_radius">Blur radius</string>
+    <string name="lockscreen_instructions">Set lockscreen image</string>
+    <string name="lockscreen_image_set">Lockscreen image updated</string>
+    <string name="lockscreen_image_reset">Lockscreen image reset</string>
+</resources>
diff --git a/packages/WallpaperCropper/src/com/android/wallpapercropper/LockscreenWallpaper.java b/packages/WallpaperCropper/src/com/android/wallpapercropper/LockscreenWallpaper.java
new file mode 100644
index 000000000000..fadaf09d57e4
--- /dev/null
+++ b/packages/WallpaperCropper/src/com/android/wallpapercropper/LockscreenWallpaper.java
@@ -0,0 +1,418 @@
+/*
+ * Copyright (C) 2014 ParanoidAndroid Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.wallpapercropper;
+
+import android.app.Activity;
+import android.app.ActionBar;
+import android.app.AlertDialog;
+import android.app.AlertDialog.Builder;
+import android.app.Dialog;
+import android.app.WallpaperManager;
+import android.content.ActivityNotFoundException;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.DialogInterface.OnClickListener;
+import android.content.Intent;
+import android.content.res.Configuration;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.drawable.BitmapDrawable;
+import android.graphics.drawable.Drawable;
+import android.graphics.Point;
+import android.net.Uri;
+import android.os.Bundle;
+import android.os.RemoteException;
+import android.provider.MediaStore;
+import android.provider.MediaStore.Images;
+import android.provider.Settings.SettingNotFoundException;
+import android.provider.Settings;
+import android.renderscript.Allocation;
+import android.renderscript.Allocation.MipmapControl;
+import android.renderscript.Element;
+import android.renderscript.RenderScript;
+import android.renderscript.ScriptIntrinsicBlur;
+import android.util.Log;
+import android.view.Display;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.ViewGroup.LayoutParams;
+import android.view.Window;
+import android.widget.ImageView;
+import android.widget.ImageView.ScaleType;
+import android.widget.LinearLayout;
+import android.widget.SeekBar;
+import android.widget.SeekBar.OnSeekBarChangeListener;
+import android.widget.Toast;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.FileNotFoundException;
+import java.io.InputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+
+public class LockscreenWallpaper extends Activity {
+    private static final String TAG = "CUSTOM_LOCKSCREEN";
+
+    private static final String INTENT_LOCKSCREEN_WALLPAPER_CHANGED = "lockscreen_changed";
+    private static final int REQUEST_CODE_BG_WALLPAPER = 1024;
+    private static final int REQUEST_CODE_CROP_WALLPAPER = 1025;
+    private static final int DEFAULT_BLUR = 16;
+
+    private SeekBar sBar;
+    private Context mContext;
+    private Dialog mDialog;
+    private File mWallpaperTemporary, mSavedLockscreen;
+    private ActionBar actionBar;
+    private ViewGroup mRoot;
+    private ImageView mBackground, mPreview;
+    private Drawable mBlurredImage;
+    private boolean mBlurLevelUpdated;
+    private String mPath;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        if (!enableRotation()) {
+            setRequestedOrientation(Configuration.ORIENTATION_PORTRAIT);
+        }
+
+        mContext = getBaseContext();
+        setContentView(R.layout.lockscreen_main);
+
+        View mRoot = findViewById(R.id.lockscreen_root);
+        View reset = findViewById(R.id.lockscreen_reset);
+        View select = findViewById(R.id.lockscreen_select);
+        View blur = findViewById(R.id.lockscreen_blur);
+
+        mWallpaperTemporary = new File(mContext.getExternalCacheDir() + "/lockwallpaper.tmp");
+        mSavedLockscreen =  new File(mContext.getExternalCacheDir() + "/lockwallpaper.sav");
+        mBackground = (ImageView) findViewById(R.id.picker_background);
+        mPreview = (ImageView) findViewById(R.id.lockscreen_preview);
+        Drawable image = getCurrentWallpaper();
+
+        if (mSavedLockscreen.exists()) {
+            mPreview.setBackground(image);
+        } else {
+            mBackground.setBackground(image);
+            resizeLayout(image);
+        }
+
+        LayoutInflater inflater = (LayoutInflater)this.getSystemService(LAYOUT_INFLATER_SERVICE);
+        View dialogLayout = inflater.inflate(R.layout.blur_dialog,
+                                (ViewGroup)findViewById(R.id.blur_dialog));
+
+        AlertDialog.Builder builder = new AlertDialog.Builder(this);
+        builder.setTitle(R.string.blur_radius)
+               .setView(dialogLayout);
+
+        mDialog = builder.create();
+
+        sBar = (SeekBar) dialogLayout.findViewById(R.id.blur_seekbar);
+        sBar.setOnSeekBarChangeListener(mSeekBarListener);
+
+        actionBar = getActionBar();
+        actionBar.setCustomView(R.layout.actionbar_set_lockscreen);
+        actionBar.getCustomView().setOnClickListener(
+                new View.OnClickListener() {
+                    @Override
+                    public void onClick(View v) {
+                        Settings.System.putInt(mContext.getContentResolver(),
+                                Settings.System.LOCKSCREEN_SEE_THROUGH, 0);
+
+                        if (mBlurredImage == null) {
+                            // copy temp image to save file
+                            try {
+                                moveFile(mWallpaperTemporary, mSavedLockscreen);
+                            } catch (IOException e){
+                                Log.e(TAG, "failed to move file");
+                            }
+                        } else {
+                            // write directy to save file
+                            try {
+                                Bitmap bmp = ((BitmapDrawable)mBlurredImage).getBitmap();
+                                FileOutputStream fileOut = new FileOutputStream(mSavedLockscreen);
+                                bmp.compress(Bitmap.CompressFormat.PNG, 100, fileOut);
+                                fileOut.flush();
+                                fileOut.close();
+                            } catch (FileNotFoundException ex) {
+                                Log.e(TAG, "file not found: " + ex.toString());
+                            } catch (IOException e) {
+                                Log.e(TAG, e.toString());
+                            }
+                        }
+
+                        Intent intent = new Intent();
+                        intent.setAction(INTENT_LOCKSCREEN_WALLPAPER_CHANGED);
+                        sendBroadcast(intent);
+                        finish();
+                        Toast.makeText(mContext, R.string.lockscreen_image_set,
+                            Toast.LENGTH_SHORT).show();
+                    }
+                });
+        reset.setOnClickListener(
+                new View.OnClickListener() {
+                    @Override
+                    public void onClick(View v) {
+                        reset();
+                        mWallpaperTemporary.delete();
+
+                        if (mSavedLockscreen.delete()) {
+                            Intent intent = new Intent();
+                            intent.setAction(INTENT_LOCKSCREEN_WALLPAPER_CHANGED);
+                            sendBroadcast(intent);
+                            Toast.makeText(mContext, R.string.lockscreen_image_reset,
+                                Toast.LENGTH_SHORT).show();
+                        }
+                        mPreview.setBackground(null);
+                        mBackground.setBackground(null);
+                        Drawable image = getCurrentWallpaper();
+                        mBackground.setBackground(image);
+                        resizeLayout(image);
+                        actionBar.hide();
+                    }
+                });
+        select.setOnClickListener(
+                new View.OnClickListener() {
+                    @Override
+                    public void onClick(View v) {
+                        pickImage();
+                    }
+                });
+        blur.setOnClickListener(
+                new View.OnClickListener() {
+                    @Override
+                    public void onClick(View v) {
+                        if (!mWallpaperTemporary.exists()) {
+                            cropImage(getCurrentWallpaper());
+                        } else {
+                            loadBlurDialog();
+                        }
+                        actionBar.show();
+                    }
+                });
+        actionBar.hide();
+    }
+
+    public boolean enableRotation() {
+        return getResources().getBoolean(R.bool.allow_rotation);
+    }
+
+    private void loadBlurDialog() {
+        mDialog.show();
+        String title = getResources().getString(R.string.blur_radius);
+        mDialog.setTitle(title + ": " + Integer.toString(sBar.getProgress()));
+        mBlurredImage = blurBitmap(getPreview(), sBar.getProgress());
+        mPreview.setBackground(mBlurredImage);
+    }
+
+    private void resizeLayout(Drawable image) {
+        LinearLayout.LayoutParams params =
+                (LinearLayout.LayoutParams) mBackground.getLayoutParams();
+        params.width = image.getIntrinsicWidth();
+        params.height = image.getIntrinsicHeight();
+        mBackground.setLayoutParams(params);
+    }
+
+    private void pickImage() {
+        final Intent intent = new Intent(Intent.ACTION_PICK,
+                    android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
+        intent.setType("image/*");
+        intent.putExtra("crop", "true");
+        intent.putExtra("scale", true);
+        intent.putExtra("scaleUpIfNeeded", false);
+        intent.putExtra("outputFormat", Bitmap.CompressFormat.PNG.toString());
+
+        final Display display = getWindowManager().getDefaultDisplay();
+
+        boolean isPortrait = getResources().getConfiguration().orientation ==
+                Configuration.ORIENTATION_PORTRAIT;
+
+        Point size = new Point();
+        display.getSize(size);
+
+        intent.putExtra("aspectX", isPortrait ? size.x : size.y);
+        intent.putExtra("aspectY", isPortrait ? size.y : size.x);
+
+        try {
+            mWallpaperTemporary.deleteOnExit();
+            mWallpaperTemporary.createNewFile();
+            mWallpaperTemporary.setWritable(true, false);
+            intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(mWallpaperTemporary));
+            intent.putExtra("return-data", false);
+            startActivityForResult(intent, REQUEST_CODE_BG_WALLPAPER);
+        } catch (IOException e) {
+            // Do nothing
+        } catch (ActivityNotFoundException e) {
+            // Do nothing
+        }
+    }
+
+    private void cropImage(Drawable image) {
+        Bitmap bmp = ((BitmapDrawable)image).getBitmap();
+        try {
+            Intent cropIntent = new Intent("com.android.camera.action.CROP");
+            mPath = Images.Media.insertImage(mContext.getContentResolver(), bmp, null, null);
+            cropIntent.setDataAndType(Uri.parse(mPath), "image/*");
+            cropIntent.putExtra("crop", "true");
+            cropIntent.putExtra("scale", true);
+            cropIntent.putExtra("scaleUpIfNeeded", false);
+
+            final Display display = getWindowManager().getDefaultDisplay();
+
+            boolean isPortrait = getResources().getConfiguration().orientation ==
+                Configuration.ORIENTATION_PORTRAIT;
+
+            Point size = new Point();
+            display.getSize(size);
+
+            cropIntent.putExtra("aspectX", isPortrait ? size.x : size.y);
+            cropIntent.putExtra("aspectY", isPortrait ? size.y : size.x);
+            cropIntent.putExtra("outputFormat", Bitmap.CompressFormat.PNG.toString());
+            cropIntent.putExtra("return-data", false);
+
+            cropIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(mWallpaperTemporary));
+
+            startActivityForResult(cropIntent, REQUEST_CODE_CROP_WALLPAPER);
+        }
+        catch (ActivityNotFoundException e) {
+            // activity not found
+        }
+    }
+
+    private Drawable blurBitmap(Drawable image, int radius) {
+        Bitmap bmp = scaleToFitWidth(((BitmapDrawable)image).getBitmap());
+        Bitmap out = Bitmap.createBitmap(bmp);
+
+        RenderScript rs = RenderScript.create(mContext);
+
+        Allocation input = Allocation.createFromBitmap(
+                rs, bmp, MipmapControl.MIPMAP_NONE, Allocation.USAGE_SCRIPT);
+        Allocation output = Allocation.createTyped(rs, input.getType());
+
+        ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
+        script.setInput(input);
+        script.setRadius(radius < 1 ? 1 : radius);
+        script.forEach(output);
+
+        output.copyTo(out);
+
+        rs.destroy();
+
+        Drawable blurred = new BitmapDrawable(getResources(), out);
+
+        return blurred;
+    }
+
+    private Drawable getCurrentWallpaper() {
+        Drawable wallpaperDrawable = null;
+        if (mSavedLockscreen.exists()) {
+            Bitmap bmp = BitmapFactory.decodeFile(mSavedLockscreen.getAbsolutePath());
+            wallpaperDrawable = new BitmapDrawable(getResources(), bmp);
+        } else {
+            WallpaperManager wallpaperManager = WallpaperManager.getInstance(this);
+            wallpaperDrawable = wallpaperManager.getDrawable();
+        }
+        return wallpaperDrawable;
+    }
+
+    private Drawable getPreview() {
+        if (!mWallpaperTemporary.exists()) return getCurrentWallpaper();
+
+        Bitmap bmp = BitmapFactory.decodeFile(mWallpaperTemporary.getAbsolutePath());
+        Drawable bg = new BitmapDrawable(getResources(), bmp);
+        return  bg == null ? getCurrentWallpaper() : bg;
+    }
+
+    private OnSeekBarChangeListener mSeekBarListener = new OnSeekBarChangeListener() {
+        @Override
+        public void onStopTrackingTouch(SeekBar seekBar) {
+            mBlurredImage = blurBitmap(getPreview(), seekBar.getProgress());
+            if (mWallpaperTemporary.exists()) {
+                mPreview.setBackground(mBlurredImage);
+            } else {
+                mPreview.setBackground(null);
+                mBackground.setBackground(mBlurredImage);
+                resizeLayout(mBlurredImage);
+            }
+        }
+
+        @Override
+        public void onStartTrackingTouch(SeekBar seekBar) {
+        }
+
+        @Override
+        public void onProgressChanged(SeekBar seekBark, int progress, boolean fromUser) {
+            mBlurLevelUpdated = true;
+            String title = getResources().getString(R.string.blur_radius);
+            mDialog.setTitle(title + ": " + Integer.toString(progress));
+        }
+    };
+
+    protected void onActivityResult(int requestCode, int resultCode,
+            Intent imageReturnedIntent) {
+        if (requestCode == REQUEST_CODE_BG_WALLPAPER) {
+            if (resultCode == Activity.RESULT_OK) {
+                mPreview.setBackground(getPreview());
+                actionBar.show();
+                reset();
+            }
+        } else if (requestCode == REQUEST_CODE_CROP_WALLPAPER) {
+            if (resultCode == Activity.RESULT_OK) {
+                mContext.getContentResolver().delete(Uri.parse(mPath), null, null);
+                Bitmap bmp = BitmapFactory.decodeFile(mWallpaperTemporary.getAbsolutePath());
+                mPreview.setBackground(new BitmapDrawable(getResources(), bmp));
+                loadBlurDialog();
+            }
+        }
+    }
+
+    public void reset() {
+        mBlurredImage = null;
+        mBlurLevelUpdated = false;
+        if (sBar != null) sBar.setProgress(DEFAULT_BLUR);
+    }
+
+    public void moveFile(File src, File dst) throws IOException {
+        InputStream in = new FileInputStream(src);
+        OutputStream out = new FileOutputStream(dst);
+
+        // Transfer bytes from in to out
+        byte[] buf = new byte[1024];
+        int len;
+        while ((len = in.read(buf)) > 0) {
+            out.write(buf, 0, len);
+        }
+        in.close();
+        out.close();
+    }
+
+    static public Bitmap scaleToFitWidth(Bitmap b) {
+        int scaledWidth = (int)Math.round(b.getWidth() / 4) * 4;
+        float factor = b.getWidth() / scaledWidth;
+        return Bitmap.createScaledBitmap(b, scaledWidth, (int) (b.getHeight() * factor), false);
+    }
+
+    @Override
+    protected void onStop() {
+        super.onStop();
+        reset();
+    }
+}