├── BlurEffect ├── ic_launcher-web.png ├── libs │ └── android-support-v4.jar ├── res │ ├── drawable-xhdpi │ │ ├── image.jpg │ │ ├── header.9.png │ │ └── ic_launcher.png │ ├── drawable-hdpi │ │ └── ic_launcher.png │ ├── drawable-mdpi │ │ └── ic_launcher.png │ ├── drawable-xxhdpi │ │ └── ic_launcher.png │ ├── values │ │ ├── strings.xml │ │ ├── dimens.xml │ │ ├── styles.xml │ │ └── arrays.xml │ ├── values-sw600dp │ │ └── dimens.xml │ ├── values-sw720dp-land │ │ └── dimens.xml │ ├── values-v11 │ │ └── styles.xml │ ├── values-v14 │ │ └── styles.xml │ └── layout │ │ ├── list_item.xml │ │ └── activity_main.xml ├── project.properties ├── proguard-project.txt ├── AndroidManifest.xml └── src │ └── com │ └── npi │ └── blureffect │ ├── TopCenterImageView.java │ ├── ScrollableImageView.java │ ├── ImageUtils.java │ ├── MainActivity.java │ └── Blur.java ├── .gitignore ├── README.md └── LICENCE.TXT /BlurEffect/ic_launcher-web.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/PomepuyN/BlurEffectForAndroidDesign/HEAD/BlurEffect/ic_launcher-web.png -------------------------------------------------------------------------------- /BlurEffect/libs/android-support-v4.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/PomepuyN/BlurEffectForAndroidDesign/HEAD/BlurEffect/libs/android-support-v4.jar -------------------------------------------------------------------------------- /BlurEffect/res/drawable-xhdpi/image.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/PomepuyN/BlurEffectForAndroidDesign/HEAD/BlurEffect/res/drawable-xhdpi/image.jpg -------------------------------------------------------------------------------- /BlurEffect/res/drawable-xhdpi/header.9.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/PomepuyN/BlurEffectForAndroidDesign/HEAD/BlurEffect/res/drawable-xhdpi/header.9.png -------------------------------------------------------------------------------- /BlurEffect/res/drawable-hdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/PomepuyN/BlurEffectForAndroidDesign/HEAD/BlurEffect/res/drawable-hdpi/ic_launcher.png -------------------------------------------------------------------------------- /BlurEffect/res/drawable-mdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/PomepuyN/BlurEffectForAndroidDesign/HEAD/BlurEffect/res/drawable-mdpi/ic_launcher.png -------------------------------------------------------------------------------- /BlurEffect/res/drawable-xhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/PomepuyN/BlurEffectForAndroidDesign/HEAD/BlurEffect/res/drawable-xhdpi/ic_launcher.png -------------------------------------------------------------------------------- /BlurEffect/res/drawable-xxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/PomepuyN/BlurEffectForAndroidDesign/HEAD/BlurEffect/res/drawable-xxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /BlurEffect/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | Blur effect for Android Design 5 | 6 | 7 | -------------------------------------------------------------------------------- /BlurEffect/res/values-sw600dp/dimens.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 7 | 8 | 9 | -------------------------------------------------------------------------------- /BlurEffect/res/values/dimens.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 16dp 5 | 16dp 6 | 7 | 8 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # built application files 2 | *.apk 3 | *.ap_ 4 | 5 | # files for the dex VM 6 | *.dex 7 | 8 | # Java class files 9 | *.class 10 | 11 | # generated files 12 | bin/ 13 | gen/ 14 | 15 | # Local configuration file (sdk path, etc) 16 | local.properties 17 | 18 | # Eclipse project files 19 | .classpath 20 | .project 21 | -------------------------------------------------------------------------------- /BlurEffect/res/values-sw720dp-land/dimens.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 7 | 128dp 8 | 9 | 10 | -------------------------------------------------------------------------------- /BlurEffect/res/values-v11/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 7 | 10 | 11 | 12 | -------------------------------------------------------------------------------- /BlurEffect/res/values-v14/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 8 | 11 | 12 | 13 | -------------------------------------------------------------------------------- /BlurEffect/res/layout/list_item.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 15 | -------------------------------------------------------------------------------- /BlurEffect/project.properties: -------------------------------------------------------------------------------- 1 | # This file is automatically generated by Android Tools. 2 | # Do not modify this file -- YOUR CHANGES WILL BE ERASED! 3 | # 4 | # This file must be checked in Version Control Systems. 5 | # 6 | # To customize properties used by the Ant build system edit 7 | # "ant.properties", and override values to adapt the script to your 8 | # project structure. 9 | # 10 | # To enable ProGuard to shrink and obfuscate your code, uncomment this (available properties: sdk.dir, user.home): 11 | #proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt 12 | 13 | # Project target. 14 | target=android-17 15 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | BlurEffectForAndroidDesign 2 | ========================== 3 | 4 | Sample to show how to implement blur graphical tricks 5 | 6 | All the explanations could be found here: http://nicolaspomepuy.fr/?p=18 7 | 8 | A sample is available on the Google Play Store at this adress: https://play.google.com/store/apps/details?id=com.npi.blureffect 9 | 10 | Screenshots : 11 | 12 | ![Alt text](https://lh6.ggpht.com/IpUS0939TyEWcLfB8rLqASLxqGvXs3VD23kokwha80Qgs2adLuOc5hbW5bP9zH4i6A) 13 | 14 | ![Alt text](https://lh6.ggpht.com/tDyQAlA2ueqKIdtwn86r43J64VaS8G-BcfJzqw617fI4vI8gz6KY2n4VT9kka8oiprY) 15 | 16 | ![Alt text](https://lh6.ggpht.com/2pO2bj_eLJcCfn8AmnYr7HrvHjc8FvW1ad-OhXnlUaOiyiaBuq5zQfCdXkihrTLRlA) 17 | -------------------------------------------------------------------------------- /BlurEffect/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 7 | 14 | 15 | 16 | 19 | 20 | 21 | -------------------------------------------------------------------------------- /BlurEffect/proguard-project.txt: -------------------------------------------------------------------------------- 1 | # To enable ProGuard in your project, edit project.properties 2 | # to define the proguard.config property as described in that file. 3 | # 4 | # Add project specific ProGuard rules here. 5 | # By default, the flags in this file are appended to flags specified 6 | # in ${sdk.dir}/tools/proguard/proguard-android.txt 7 | # You can edit the include path and order by changing the ProGuard 8 | # include property in project.properties. 9 | # 10 | # For more details, see 11 | # http://developer.android.com/guide/developing/tools/proguard.html 12 | 13 | # Add any project specific keep options here: 14 | 15 | # If your project uses WebView with JS, uncomment the following 16 | # and specify the fully qualified class name to the JavaScript interface 17 | # class: 18 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 19 | # public *; 20 | #} 21 | -------------------------------------------------------------------------------- /BlurEffect/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 6 | 7 | 10 | 11 | 16 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | -------------------------------------------------------------------------------- /BlurEffect/src/com/npi/blureffect/TopCenterImageView.java: -------------------------------------------------------------------------------- 1 | package com.npi.blureffect; 2 | 3 | import android.content.Context; 4 | import android.graphics.Matrix; 5 | import android.util.AttributeSet; 6 | import android.widget.ImageView; 7 | 8 | /** 9 | * Custom view allowing an image to be displayed with a "top crop" scale type 10 | * 11 | * @author Nicolas POMEPUY 12 | * 13 | */ 14 | public class TopCenterImageView extends ImageView { 15 | 16 | public TopCenterImageView(Context context, AttributeSet attrs, int defStyle) { 17 | super(context, attrs, defStyle); 18 | setScaleType(ScaleType.MATRIX); 19 | } 20 | 21 | public TopCenterImageView(Context context, AttributeSet attrs) { 22 | super(context, attrs); 23 | setScaleType(ScaleType.MATRIX); 24 | } 25 | 26 | public TopCenterImageView(Context context) { 27 | super(context); 28 | setScaleType(ScaleType.MATRIX); 29 | } 30 | 31 | /** 32 | * Top crop scale type 33 | */ 34 | @Override 35 | protected boolean setFrame(int l, int t, int r, int b) { 36 | if (getDrawable() == null) { 37 | return super.setFrame(l, t, r, b); 38 | } 39 | Matrix matrix = getImageMatrix(); 40 | float scaleFactor = getWidth() / (float) getDrawable().getIntrinsicWidth(); 41 | matrix.setScale(scaleFactor, scaleFactor, 0, 0); 42 | setImageMatrix(matrix); 43 | return super.setFrame(l, t, r, b); 44 | } 45 | 46 | } 47 | -------------------------------------------------------------------------------- /BlurEffect/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 5 | 6 | 11 | 12 | 17 | 18 | 23 | 24 | 27 | 28 | 32 | 40 | 49 | 50 | 51 | -------------------------------------------------------------------------------- /BlurEffect/res/values/arrays.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | "Lorem ipsum dolor sit amet, 6 | consectetur adipiscing elit. Sed rutrum, 7 | ligula eu fringilla condimentum, 8 | lorem augue varius odio, vel sagittis neque nibh porttitor dui. 9 | In hac habitasse platea dictumst. 10 | Duis a est ultricies, accumsan mi a, 11 | pulvinar felis. 12 | In hac habitasse platea dictumst. 13 | Nullam at accumsan neque, ut dignissim neque. 14 | Vivamus suscipit arcu sit amet dignissim feugiat. 15 | Sed fringilla metus at ultricies tempus. 16 | pulvinar felis. 17 | In hac habitasse platea dictumst. 18 | Nullam at accumsan neque, ut dignissim neque. 19 | Vivamus suscipit arcu sit amet dignissim feugiat. 20 | Sed fringilla metus at ultricies tempus. 21 | pulvinar felis. 22 | In hac habitasse platea dictumst. 23 | Nullam at accumsan neque, ut dignissim neque. 24 | Vivamus suscipit arcu sit amet dignissim feugiat. 25 | Sed fringilla metus at ultricies tempus. 26 | pulvinar felis. 27 | In hac habitasse platea dictumst. 28 | Nullam at accumsan neque, ut dignissim neque. 29 | Vivamus suscipit arcu sit amet dignissim feugiat. 30 | Sed fringilla metus at ultricies tempus. 31 | In lobortis, sem vel rhoncus hendrerit, odio diam rutrum ipsum, ut varius lorem dui at mauris. 32 | Vestibulum lobortis et quam non convallis. Phasellus viverra porta nisl, eu luctus erat tincidunt et. 33 | Maecenas ac lorem dapibus, dictum turpis quis, blandit mi." 34 | 35 | 36 | -------------------------------------------------------------------------------- /BlurEffect/src/com/npi/blureffect/ScrollableImageView.java: -------------------------------------------------------------------------------- 1 | package com.npi.blureffect; 2 | 3 | import android.content.Context; 4 | import android.graphics.Bitmap; 5 | import android.graphics.Canvas; 6 | import android.graphics.Paint; 7 | import android.util.AttributeSet; 8 | import android.view.View; 9 | 10 | /** 11 | * Custom view used to render an horizontal part (slice) of an image. 12 | * 13 | * @author Nicolas POMEPUY 14 | * 15 | */ 16 | class ScrollableImageView extends View { 17 | 18 | // A bitmap adapted to the View size 19 | private Bitmap adaptedImage; 20 | // A Paint object used to render the image 21 | private Paint paint = new Paint(); 22 | // The original Bitmap 23 | private Bitmap originalImage; 24 | // The screen width used to render the image 25 | private int screenWidth; 26 | private int scrollY = 0; 27 | 28 | public ScrollableImageView(Context context, AttributeSet attrs, int defStyle) { 29 | super(context, attrs, defStyle); 30 | } 31 | 32 | public ScrollableImageView(Context context, AttributeSet attrs) { 33 | this(context, attrs, 0); 34 | } 35 | 36 | public ScrollableImageView(Context context) { 37 | this(context, null); 38 | } 39 | 40 | /** 41 | * Draws the view if the adapted image is not null 42 | */ 43 | @Override 44 | protected void onDraw(Canvas canvas) { 45 | 46 | if (adaptedImage != null) 47 | canvas.drawBitmap(adaptedImage, 0, 0, paint); 48 | 49 | } 50 | 51 | /** 52 | * Handle an external scroll and render the image by switching it by a 53 | * distance 54 | * 55 | * @param distY 56 | * the distance from the top 57 | */ 58 | public void handleScroll(float distY) { 59 | 60 | if (getHeight() > 0 && originalImage != null) { 61 | 62 | if (scrollY <= originalImage.getHeight() - getHeight()) { 63 | adaptedImage = Bitmap.createBitmap(originalImage, 0, (int) -distY, screenWidth, getHeight()); 64 | 65 | invalidate(); 66 | } 67 | } 68 | 69 | } 70 | 71 | public void setoriginalImage(Bitmap bmp) { 72 | this.originalImage = bmp; 73 | adaptedImage = Bitmap.createBitmap(bmp); 74 | invalidate(); 75 | } 76 | 77 | public void setScreenWidth(int screenWidth) { 78 | this.screenWidth = screenWidth; 79 | } 80 | 81 | } -------------------------------------------------------------------------------- /BlurEffect/src/com/npi/blureffect/ImageUtils.java: -------------------------------------------------------------------------------- 1 | package com.npi.blureffect; 2 | 3 | import java.io.File; 4 | import java.io.FileNotFoundException; 5 | import java.io.FileOutputStream; 6 | import java.io.IOException; 7 | 8 | import android.annotation.SuppressLint; 9 | import android.app.Activity; 10 | import android.graphics.Bitmap; 11 | import android.graphics.Point; 12 | import android.os.Build; 13 | import android.util.Log; 14 | import android.view.Display; 15 | 16 | public class ImageUtils { 17 | private static final String TAG = "ImageUtils"; 18 | 19 | /** 20 | * Stores an image on the storage 21 | * 22 | * @param image 23 | * the image to store. 24 | * @param pictureFile 25 | * the file in which it must be stored 26 | */ 27 | public static void storeImage(Bitmap image, File pictureFile) { 28 | if (pictureFile == null) { 29 | Log.d(TAG, "Error creating media file, check storage permissions: "); 30 | return; 31 | } 32 | try { 33 | FileOutputStream fos = new FileOutputStream(pictureFile); 34 | image.compress(Bitmap.CompressFormat.PNG, 90, fos); 35 | fos.close(); 36 | } catch (FileNotFoundException e) { 37 | Log.d(TAG, "File not found: " + e.getMessage()); 38 | } catch (IOException e) { 39 | Log.d(TAG, "Error accessing file: " + e.getMessage()); 40 | } 41 | } 42 | 43 | /** 44 | * Get the screen height. 45 | * 46 | * @param context 47 | * @return the screen height 48 | */ 49 | @SuppressWarnings("deprecation") 50 | @SuppressLint("NewApi") 51 | public static int getScreenHeight(Activity context) { 52 | 53 | Display display = context.getWindowManager().getDefaultDisplay(); 54 | if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) { 55 | Point size = new Point(); 56 | display.getSize(size); 57 | return size.y; 58 | } 59 | return display.getHeight(); 60 | } 61 | 62 | /** 63 | * Get the screen width. 64 | * 65 | * @param context 66 | * @return the screen width 67 | */ 68 | @SuppressWarnings("deprecation") 69 | @SuppressLint("NewApi") 70 | public static int getScreenWidth(Activity context) { 71 | 72 | Display display = context.getWindowManager().getDefaultDisplay(); 73 | if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) { 74 | Point size = new Point(); 75 | display.getSize(size); 76 | return size.x; 77 | } 78 | return display.getWidth(); 79 | } 80 | } 81 | -------------------------------------------------------------------------------- /BlurEffect/src/com/npi/blureffect/MainActivity.java: -------------------------------------------------------------------------------- 1 | package com.npi.blureffect; 2 | 3 | import java.io.File; 4 | 5 | import android.app.Activity; 6 | import android.graphics.Bitmap; 7 | import android.graphics.BitmapFactory; 8 | import android.os.Bundle; 9 | import android.view.View; 10 | import android.view.Window; 11 | import android.widget.AbsListView; 12 | import android.widget.AbsListView.LayoutParams; 13 | import android.widget.AbsListView.OnScrollListener; 14 | import android.widget.ArrayAdapter; 15 | import android.widget.CompoundButton; 16 | import android.widget.CompoundButton.OnCheckedChangeListener; 17 | import android.widget.ImageView; 18 | import android.widget.ListView; 19 | import android.widget.Switch; 20 | 21 | public class MainActivity extends Activity { 22 | 23 | private static final String BLURRED_IMG_PATH = "blurred_image.png"; 24 | private static final int TOP_HEIGHT = 700; 25 | private ListView mList; 26 | private ImageView mBlurredImage; 27 | private View headerView; 28 | private ImageView mNormalImage; 29 | private ScrollableImageView mBlurredImageHeader; 30 | private Switch mSwitch; 31 | private float alpha; 32 | 33 | @Override 34 | protected void onCreate(Bundle savedInstanceState) { 35 | super.onCreate(savedInstanceState); 36 | requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS); 37 | setContentView(R.layout.activity_main); 38 | 39 | // Get the screen width 40 | final int screenWidth = ImageUtils.getScreenWidth(this); 41 | 42 | // Find the view 43 | mBlurredImage = (ImageView) findViewById(R.id.blurred_image); 44 | mNormalImage = (ImageView) findViewById(R.id.normal_image); 45 | mBlurredImageHeader = (ScrollableImageView) findViewById(R.id.blurred_image_header); 46 | mSwitch = (Switch) findViewById(R.id.background_switch); 47 | mList = (ListView) findViewById(R.id.list); 48 | 49 | // prepare the header ScrollableImageView 50 | mBlurredImageHeader.setScreenWidth(screenWidth); 51 | 52 | // Action for the switch 53 | mSwitch.setOnCheckedChangeListener(new OnCheckedChangeListener() { 54 | 55 | @Override 56 | public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { 57 | if (isChecked) { 58 | mBlurredImage.setAlpha(alpha); 59 | } else { 60 | mBlurredImage.setAlpha(0f); 61 | 62 | } 63 | 64 | } 65 | }); 66 | 67 | // Try to find the blurred image 68 | final File blurredImage = new File(getFilesDir() + BLURRED_IMG_PATH); 69 | if (!blurredImage.exists()) { 70 | 71 | // launch the progressbar in ActionBar 72 | setProgressBarIndeterminateVisibility(true); 73 | 74 | new Thread(new Runnable() { 75 | 76 | @Override 77 | public void run() { 78 | 79 | // No image found => let's generate it! 80 | BitmapFactory.Options options = new BitmapFactory.Options(); 81 | options.inSampleSize = 2; 82 | Bitmap image = BitmapFactory.decodeResource(getResources(), R.drawable.image, options); 83 | Bitmap newImg = Blur.fastblur(MainActivity.this, image, 12); 84 | ImageUtils.storeImage(newImg, blurredImage); 85 | runOnUiThread(new Runnable() { 86 | 87 | @Override 88 | public void run() { 89 | updateView(screenWidth); 90 | 91 | // And finally stop the progressbar 92 | setProgressBarIndeterminateVisibility(false); 93 | } 94 | }); 95 | 96 | } 97 | }).start(); 98 | 99 | } else { 100 | 101 | // The image has been found. Let's update the view 102 | updateView(screenWidth); 103 | 104 | } 105 | 106 | String[] strings = getResources().getStringArray(R.array.list_content); 107 | 108 | // Prepare the header view for our list 109 | headerView = new View(this); 110 | headerView.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, TOP_HEIGHT)); 111 | mList.addHeaderView(headerView); 112 | mList.setAdapter(new ArrayAdapter(this, R.layout.list_item, strings)); 113 | mList.setOnScrollListener(new OnScrollListener() { 114 | 115 | @Override 116 | public void onScrollStateChanged(AbsListView view, int scrollState) { 117 | 118 | } 119 | 120 | /** 121 | * Listen to the list scroll. This is where magic happens ;) 122 | */ 123 | @Override 124 | public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) { 125 | 126 | // Calculate the ratio between the scroll amount and the list 127 | // header weight to determinate the top picture alpha 128 | alpha = (float) -headerView.getTop() / (float) TOP_HEIGHT; 129 | // Apply a ceil 130 | if (alpha > 1) { 131 | alpha = 1; 132 | } 133 | 134 | // Apply on the ImageView if needed 135 | if (mSwitch.isChecked()) { 136 | mBlurredImage.setAlpha(alpha); 137 | } 138 | 139 | // Parallax effect : we apply half the scroll amount to our 140 | // three views 141 | mBlurredImage.setTop(headerView.getTop() / 2); 142 | mNormalImage.setTop(headerView.getTop() / 2); 143 | mBlurredImageHeader.handleScroll(headerView.getTop() / 2); 144 | 145 | } 146 | }); 147 | } 148 | 149 | private void updateView(final int screenWidth) { 150 | Bitmap bmpBlurred = BitmapFactory.decodeFile(getFilesDir() + BLURRED_IMG_PATH); 151 | bmpBlurred = Bitmap.createScaledBitmap(bmpBlurred, screenWidth, (int) (bmpBlurred.getHeight() 152 | * ((float) screenWidth) / (float) bmpBlurred.getWidth()), false); 153 | 154 | mBlurredImage.setImageBitmap(bmpBlurred); 155 | 156 | mBlurredImageHeader.setoriginalImage(bmpBlurred); 157 | } 158 | } 159 | -------------------------------------------------------------------------------- /BlurEffect/src/com/npi/blureffect/Blur.java: -------------------------------------------------------------------------------- 1 | package com.npi.blureffect; 2 | 3 | import android.annotation.SuppressLint; 4 | import android.content.Context; 5 | import android.graphics.Bitmap; 6 | import android.os.Build.VERSION; 7 | import android.renderscript.Allocation; 8 | import android.renderscript.Element; 9 | import android.renderscript.RenderScript; 10 | import android.renderscript.ScriptIntrinsicBlur; 11 | import android.util.Log; 12 | 13 | public class Blur { 14 | 15 | private static final String TAG = "Blur"; 16 | 17 | @SuppressLint("NewApi") 18 | public static Bitmap fastblur(Context context, Bitmap sentBitmap, int radius) { 19 | 20 | if (VERSION.SDK_INT > 16) { 21 | Bitmap bitmap = sentBitmap.copy(sentBitmap.getConfig(), true); 22 | 23 | final RenderScript rs = RenderScript.create(context); 24 | final Allocation input = Allocation.createFromBitmap(rs, sentBitmap, Allocation.MipmapControl.MIPMAP_NONE, 25 | Allocation.USAGE_SCRIPT); 26 | final Allocation output = Allocation.createTyped(rs, input.getType()); 27 | final ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs)); 28 | script.setRadius(radius /* e.g. 3.f */); 29 | script.setInput(input); 30 | script.forEach(output); 31 | output.copyTo(bitmap); 32 | return bitmap; 33 | } 34 | 35 | // Stack Blur v1.0 from 36 | // http://www.quasimondo.com/StackBlurForCanvas/StackBlurDemo.html 37 | // 38 | // Java Author: Mario Klingemann 39 | // http://incubator.quasimondo.com 40 | // created Feburary 29, 2004 41 | // Android port : Yahel Bouaziz 42 | // http://www.kayenko.com 43 | // ported april 5th, 2012 44 | 45 | // This is a compromise between Gaussian Blur and Box blur 46 | // It creates much better looking blurs than Box Blur, but is 47 | // 7x faster than my Gaussian Blur implementation. 48 | // 49 | // I called it Stack Blur because this describes best how this 50 | // filter works internally: it creates a kind of moving stack 51 | // of colors whilst scanning through the image. Thereby it 52 | // just has to add one new block of color to the right side 53 | // of the stack and remove the leftmost color. The remaining 54 | // colors on the topmost layer of the stack are either added on 55 | // or reduced by one, depending on if they are on the right or 56 | // on the left side of the stack. 57 | // 58 | // If you are using this algorithm in your code please add 59 | // the following line: 60 | // 61 | // Stack Blur Algorithm by Mario Klingemann 62 | 63 | Bitmap bitmap = sentBitmap.copy(sentBitmap.getConfig(), true); 64 | 65 | if (radius < 1) { 66 | return (null); 67 | } 68 | 69 | int w = bitmap.getWidth(); 70 | int h = bitmap.getHeight(); 71 | 72 | int[] pix = new int[w * h]; 73 | Log.e("pix", w + " " + h + " " + pix.length); 74 | bitmap.getPixels(pix, 0, w, 0, 0, w, h); 75 | 76 | int wm = w - 1; 77 | int hm = h - 1; 78 | int wh = w * h; 79 | int div = radius + radius + 1; 80 | 81 | int r[] = new int[wh]; 82 | int g[] = new int[wh]; 83 | int b[] = new int[wh]; 84 | int rsum, gsum, bsum, x, y, i, p, yp, yi, yw; 85 | int vmin[] = new int[Math.max(w, h)]; 86 | 87 | int divsum = (div + 1) >> 1; 88 | divsum *= divsum; 89 | int dv[] = new int[256 * divsum]; 90 | for (i = 0; i < 256 * divsum; i++) { 91 | dv[i] = (i / divsum); 92 | } 93 | 94 | yw = yi = 0; 95 | 96 | int[][] stack = new int[div][3]; 97 | int stackpointer; 98 | int stackstart; 99 | int[] sir; 100 | int rbs; 101 | int r1 = radius + 1; 102 | int routsum, goutsum, boutsum; 103 | int rinsum, ginsum, binsum; 104 | 105 | for (y = 0; y < h; y++) { 106 | rinsum = ginsum = binsum = routsum = goutsum = boutsum = rsum = gsum = bsum = 0; 107 | for (i = -radius; i <= radius; i++) { 108 | p = pix[yi + Math.min(wm, Math.max(i, 0))]; 109 | sir = stack[i + radius]; 110 | sir[0] = (p & 0xff0000) >> 16; 111 | sir[1] = (p & 0x00ff00) >> 8; 112 | sir[2] = (p & 0x0000ff); 113 | rbs = r1 - Math.abs(i); 114 | rsum += sir[0] * rbs; 115 | gsum += sir[1] * rbs; 116 | bsum += sir[2] * rbs; 117 | if (i > 0) { 118 | rinsum += sir[0]; 119 | ginsum += sir[1]; 120 | binsum += sir[2]; 121 | } else { 122 | routsum += sir[0]; 123 | goutsum += sir[1]; 124 | boutsum += sir[2]; 125 | } 126 | } 127 | stackpointer = radius; 128 | 129 | for (x = 0; x < w; x++) { 130 | 131 | r[yi] = dv[rsum]; 132 | g[yi] = dv[gsum]; 133 | b[yi] = dv[bsum]; 134 | 135 | rsum -= routsum; 136 | gsum -= goutsum; 137 | bsum -= boutsum; 138 | 139 | stackstart = stackpointer - radius + div; 140 | sir = stack[stackstart % div]; 141 | 142 | routsum -= sir[0]; 143 | goutsum -= sir[1]; 144 | boutsum -= sir[2]; 145 | 146 | if (y == 0) { 147 | vmin[x] = Math.min(x + radius + 1, wm); 148 | } 149 | p = pix[yw + vmin[x]]; 150 | 151 | sir[0] = (p & 0xff0000) >> 16; 152 | sir[1] = (p & 0x00ff00) >> 8; 153 | sir[2] = (p & 0x0000ff); 154 | 155 | rinsum += sir[0]; 156 | ginsum += sir[1]; 157 | binsum += sir[2]; 158 | 159 | rsum += rinsum; 160 | gsum += ginsum; 161 | bsum += binsum; 162 | 163 | stackpointer = (stackpointer + 1) % div; 164 | sir = stack[(stackpointer) % div]; 165 | 166 | routsum += sir[0]; 167 | goutsum += sir[1]; 168 | boutsum += sir[2]; 169 | 170 | rinsum -= sir[0]; 171 | ginsum -= sir[1]; 172 | binsum -= sir[2]; 173 | 174 | yi++; 175 | } 176 | yw += w; 177 | } 178 | for (x = 0; x < w; x++) { 179 | rinsum = ginsum = binsum = routsum = goutsum = boutsum = rsum = gsum = bsum = 0; 180 | yp = -radius * w; 181 | for (i = -radius; i <= radius; i++) { 182 | yi = Math.max(0, yp) + x; 183 | 184 | sir = stack[i + radius]; 185 | 186 | sir[0] = r[yi]; 187 | sir[1] = g[yi]; 188 | sir[2] = b[yi]; 189 | 190 | rbs = r1 - Math.abs(i); 191 | 192 | rsum += r[yi] * rbs; 193 | gsum += g[yi] * rbs; 194 | bsum += b[yi] * rbs; 195 | 196 | if (i > 0) { 197 | rinsum += sir[0]; 198 | ginsum += sir[1]; 199 | binsum += sir[2]; 200 | } else { 201 | routsum += sir[0]; 202 | goutsum += sir[1]; 203 | boutsum += sir[2]; 204 | } 205 | 206 | if (i < hm) { 207 | yp += w; 208 | } 209 | } 210 | yi = x; 211 | stackpointer = radius; 212 | for (y = 0; y < h; y++) { 213 | // Preserve alpha channel: ( 0xff000000 & pix[yi] ) 214 | pix[yi] = (0xff000000 & pix[yi]) | (dv[rsum] << 16) | (dv[gsum] << 8) | dv[bsum]; 215 | 216 | rsum -= routsum; 217 | gsum -= goutsum; 218 | bsum -= boutsum; 219 | 220 | stackstart = stackpointer - radius + div; 221 | sir = stack[stackstart % div]; 222 | 223 | routsum -= sir[0]; 224 | goutsum -= sir[1]; 225 | boutsum -= sir[2]; 226 | 227 | if (x == 0) { 228 | vmin[y] = Math.min(y + r1, hm) * w; 229 | } 230 | p = x + vmin[y]; 231 | 232 | sir[0] = r[p]; 233 | sir[1] = g[p]; 234 | sir[2] = b[p]; 235 | 236 | rinsum += sir[0]; 237 | ginsum += sir[1]; 238 | binsum += sir[2]; 239 | 240 | rsum += rinsum; 241 | gsum += ginsum; 242 | bsum += binsum; 243 | 244 | stackpointer = (stackpointer + 1) % div; 245 | sir = stack[stackpointer]; 246 | 247 | routsum += sir[0]; 248 | goutsum += sir[1]; 249 | boutsum += sir[2]; 250 | 251 | rinsum -= sir[0]; 252 | ginsum -= sir[1]; 253 | binsum -= sir[2]; 254 | 255 | yi += w; 256 | } 257 | } 258 | 259 | Log.e("pix", w + " " + h + " " + pix.length); 260 | bitmap.setPixels(pix, 0, w, 0, 0, w, h); 261 | return (bitmap); 262 | } 263 | 264 | } 265 | -------------------------------------------------------------------------------- /LICENCE.TXT: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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