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EtsyBlur

(★ 753)

EtsyBlur is an Android library that allows developers to easily add a glass-like blur effect implemented in the Etsy app.

파일 탐색기

최종 버전 다운로드 (.zip)

- dialog.png
- navigation_view.png
- readme_demo.gif
- sample_launch_screen.png
- - gradle-wrapper.jar
  - gradle-wrapper.properties
- .gitignore
- build.gradle
- gradle.properties
- proguard-rules.pro
- .gitignore
- build.gradle
- proguard-rules.pro
.gitignore
build.gradle
gradle.properties
gradlew
gradlew.bat
LICENSE
README.md
settings.gradle

# 설치 가이드

1. 코드 내려받기

git clone https://github.com/Manabu-GT/EtsyBlur

깃허브에서 프로젝트 코드 전체를 내 컴퓨터로 내려받습니다.

cd EtsyBlur

방금 내려받은 프로젝트 폴더 안으로 이동합니다.

2. Gradle (Java/Kotlin)

보통 추천

사전 준비물

Git GitHub에서 프로젝트 코드를 내려받으려면 필요합니다.
JDK (Java) Java/Kotlin 프로젝트를 빌드/실행하려면 필요합니다.
Gradle 레포에 포함된 gradlew(Gradle Wrapper)를 쓰면 Gradle을 따로 설치할 필요가 없습니다.

./gradlew build

Gradle로 빌드를 진행합니다.

✅ BUILD SUCCESSFUL 메시지가 뜨면 성공입니다. build/ 폴더에 결과물이 생성됩니다.

// repository documentation

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# ⚠️ [DEPRECATED]

> **This library is no longer maintained.**
> It relies on **RenderScript**, which has been deprecated and removed from modern Android build tools. Using this library in new projects will cause build failures.

---

### Modern Alternatives (Jetpack Compose)

**1. For "Glassmorphism" / Frosted Glass (The Etsy Effect):**
Use the **[Haze](https://github.com/chrisbanes/haze)** library by Chris Banes. It is the community standard for high-performance blurring and glass effects in Compose.

**2. For Simple Blurs (Android 12+):**
If you only need to blur an image or a composable on newer devices, the native modifier could be your option:

```kotlin
Image(
    painter = painterResource(id = R.drawable.my_image),
    contentDescription = null,
    modifier = Modifier.blur(10.dp) // Requires API 31+ (Android 12)
)
```

EtsyBlur
===========

[![Maven Central](https://maven-badges.herokuapp.com/maven-central/com.ms-square/etsyblur/badge.svg)](https://maven-badges.herokuapp.com/maven-central/com.ms-square/etsyblur)
[![Android Arsenal](https://img.shields.io/badge/Android%20Arsenal-EtsyBlur-brightgreen.svg?style=flat)](https://android-arsenal.com/details/1/1202)

EtsyBlur is an Android library that allows developers to easily add a glass-like blur effect 
implemented in the past [Etsy][1] app.

<img src="https://raw.github.com/Manabu-GT/EtsyBlur/master/art/sample_launch_screen.png" width=221 height=379 alt="Sample App's Launch Screen">
<img src="https://raw.github.com/Manabu-GT/EtsyBlur/master/art/readme_demo.gif" width=221 height=379 alt="Quick Demo">

Try out the sample application:

<a href="https://play.google.com/store/apps/details?id=com.ms.square.android.etsyblurdemo">
  <img alt="Android app on Google Play"
       src="https://developer.android.com/images/brand/en_app_rgb_wo_45.png" />
</a>

Requirements
-------------
API Level 11 (Honeycomb) and above.

Setup
------
The library is pushed to Maven Central as an AAR, 
so you just need to add the followings to your ***build.gradle*** file:

```groovy
dependencies {
    compile 'com.ms-square:etsyblur:0.2.1'
}

android {
    defaultConfig {
        renderscriptTargetApi 25
        renderscriptSupportModeEnabled true
    }
}
```

Usage
------
Using the library is really simple, read the following instructions or your can also look at the source code of the [provided sample][2].

### For NavigationView
```java
// ex...Inside Activity's onCreate()
drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
BlurSupport.addTo(drawerLayout);
```

The above code just works if you have the **com.ms_square.etsyblur.BlurringView** with id set to **@id/blurring_view** within your layout xml file.
Please place it between the first child view of your DrawerLayout and NavigationView; otherwise, it will not work as expected.

```xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
    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:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:openDrawer="start">

<LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

<android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:minHeight="?attr/actionBarSize"
            android:background="?attr/colorPrimary"/>

<FrameLayout
            android:id="@+id/content_view"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />
    </LinearLayout>

<com.ms_square.etsyblur.BlurringView
        android:id="@id/blurring_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
    </com.ms_square.etsyblur.BlurringView>

<android.support.design.widget.NavigationView
        android:id="@+id/nav_view"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:fitsSystemWindows="true"
        android:background="@color/bg_drawer"
        app:itemTextColor="@android:color/white"
        app:menu="@menu/navigation_view_drawer" />

</android.support.v4.widget.DrawerLayout>
```

### For NavigationDrawer

```java
// ex...Inside Activity's onCreate()
drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
navigationDrawerFragment.setUp(R.id.navigation_drawer, drawerLayout);
BlurSupport.addTo(drawerLayout);
```

The above code just works if you have the **com.ms_square.etsyblur.BlurringView** with id set to **@id/blurring_view** within your layout xml file.
Please place it between the first child view of your DrawerLayout and NavigationDrawerFragment; otherwise, it will not work as expected.

```xml
<android.support.v4.widget.DrawerLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".NavigationDrawerActivity">

<FrameLayout
        android:id="@+id/content_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

<com.ms_square.etsyblur.BlurringView
        android:id="@id/blurring_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
    </com.ms_square.etsyblur.BlurringView>

<fragment android:id="@+id/navigation_drawer"
        android:layout_width="@dimen/navigation_drawer_width"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:name="com.ms.square.android.etsyblurdemo.NavigationDrawerFragment"
        tools:layout="@layout/fragment_navigation_drawer" />

</android.support.v4.widget.DrawerLayout>
```

### For DialogFragment

* `BlurDialogFragment`

This is an abstract class to make the dialog background into the blurred image of its holding activity's content. BlurDialogFragment supports asynchronous blur operation provided via [Blur - for Simple Blur Effect on bitmaps](#blur---for-simple-blur-effect-on-bitmaps). Its asynchronous execution policy is determined by the given [AsyncPolicy](#asyncpolicy).

#### Simple usage using inheritance

If you are using **android.support.v4.app.DialogFragment**, just extend **BlurDialogFragment**.
Using [BlurConfig](#blurconfig), experiment with the blur radius, the down scale factor, and the overlay coloring to obtain the blur effect you want for your app.

```java
/**
 * Simple dialog fragment with background blurring effect.
 */
public class CreateDialogDialogFragment extends BlurDialogFragment {
@Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        AlertDialog dialog = new AlertDialog.Builder(getActivity(), R.style.EtsyBlurAlertDialogTheme)
                .setIcon(R.drawable.ic_launcher)
                .setTitle("Hello")
                .setPositiveButton("OK", null)
                .create();
        return dialog;
    }
    
    @NonNull
    protected BlurConfig blurConfig() {
        return new BlurConfig.Builder()
                .asyncPolicy(SmartAsyncPolicyHolder.INSTANCE.smartAsyncPolicy())
                .debug(true)
                .build();
    }
}
```

Note:

In your DialogFragment, override either onCreateDialog() or onCreateView(), not both.
For a onCreateView() example, please look at the CreateViewDialogFragment in [provided sample][6].
I quickly wrote this minimum BlurDialogFragment just to mimic old-Etsy app's blurring dialog implementation.
So, there are missing options/features I should probably add in the future such as a toolbar/actionbar exclusion option, non-support library's DialogFragment support...etc.

### BlurringView

BlurringView can blur the target view's content automatically.
In this library, it's being used to automatically blur the content within DrawerLayout.

#### Available custom attributes in layout xml

* radius - [integer]
>Radius used to blur the target view.

* downScaleFactor - [integer]
>Factor used to down scale the target view before blurring.
 Making this value higher results in faster blurring time and less memory allocation, but degreades final rendering quality.
 
* overlayColor - [color]
>Color used to overrlay the blurred image

* allowFallback - [boolean]
>If true, it fall backs to Java's fastblur implementation when rederscript is not available. If false, performs no blurring in such case.

* debug - [boolean]
>When set to true, it will output logcat debug messages of blur operations such as blur method used, if executing in background, and time each blur operation took.

#### [BlurConfig][4]

You can also set the configuration dynamically by calling **void blurConfig(BlurConfig config)** method of BlurringView at runtime. Please not that it must be called before BlurringView's onAttachedToWindow() gets called. When called, it will overwrite the configuration pased through custom attributes in your layout xml file.
All the custom attribute options plus the following parameter is currently  available.

* asyncPolicy - [AsyncPolicy](#asyncpolicy)

>Policy used to determine whether to execute blurring operation in background thread or not.

*NOTE:*

BlurringView is based on the implementation of [500px Android Blurring View][3].
Compared with its original implementation, there are several changes such as the followings.

* If renderscript is not available, it can optionally fallback to the Java's fastblur implementation.
* No need to call invalidate manually on the target blurredView.
* The number of bitmaps used is reduced to 1.
* Does not crash if the target blurredView is set to the BlurringView's parent.
* Support for the layout preview UI via the isInEditMode() method
* Support to work with ViewPager

BlurringView currently does not support asynchronous execution of a blur operation. For now, just adjust downSampleFactor and blurRadius to get fast enough performance to just run it on the UI thread. I will ponder if the need for asynchronous suppport justifies added code complexity mainly due to threading.

###  Blur - for Simple Blur Effect on bitmaps

Blur class is being used internally for both BlurringView and BlurDialogFragment to provide the blur operation as well.

#### Simple Usage

```java
Blur blur = new Blur(context, blurConfig)

// Run synchronously
// true if inBitmap is reusable as the output
Bitmap blurredBitmap = blur.execute(inBitmap, true);

// Run synchronously or asynchronously depending on the given AsyncPolicy
// via blurConfig.
blur.execute(inBitmap, true, new BlurEngine.Callback() {
    @Override
    public void onFinished(@Nullable Bitmap blurredBitmap) {
    	blurImgView.setImageBitmap(blurredBitmap);
    }
});

// when done, make sure to call destroy() which will clean up used resources and 
// cancel any remaining backgroud work
blur.destroy();
```

----------
#### [AsyncPolicy][5]
This IF defines policy used to determine whether to execute blurring operation in background thread or not.
Currently, the follwing policies are provided.

* **SimpleAsyncPolicy** (Default)
>If renderscript is available to use, always execute blur operation synchronously; otherwis execute asynchronously.

* AlwaysAsyncPolicy
>Always execute blur operation asynchronously.

* SmartAsyncPolicy
>Dynamically guess computation time required and determins to execute blur operation asynchronously or not.
>If the estimated computation time exceeds 16ms, it will run asynchronously.

Change logs
----------
* 0.2.1 : Fixed BlurringView to work with ViewPager (3/2017)
* 0.2.0 : Mostly re-wrote old outdated code and updated IFs. Noticed Etsy app no longer uses blur... Might re-consider current library structures (3/2017)
* 0.1.4 : Fix to fall back to Java's fast blur when renderscript is unavailable. (3/2017)
* 0.1.3 : Fix issues when window has a navigation bar in BlurDialogFragmentHelper. (11/2015)
* 0.1.2 : Fix zero width/height exception in BlurDialogFragmentHelper. (8/2015)
* 0.1.1 : Fix NullPointerExcepiton if DialogFragment implements onCreateDialog. (5/2015)
* 0.1.0 : Initial Release. (12/2014)

License
----------

Copyright 2014 Manabu Shimobe

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.

[1]: https://play.google.com/store/apps/details?id=com.etsy.android
[2]: https://github.com/Manabu-GT/EtsyBlur/tree/master/sample/src/main/java/com/ms/square/android/etsyblurdemo/
[3]: https://github.com/500px/500px-android-blur
[4]: https://github.com/Manabu-GT/EtsyBlur/blob/master/lib/src/main/java/com/ms_square/etsyblur/BlurConfig.java
[5]: https://github.com/Manabu-GT/EtsyBlur/blob/master/lib/src/main/java/com/ms_square/etsyblur/AsyncPolicy.java
[6]: https://github.com/Manabu-GT/EtsyBlur/tree/master/sample/src/main/java/com/ms/square/android/etsyblurdemo/ui/fragment/CreateViewDialogFragment.java