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https://github.com/camerakit/blurkit-android
The missing Android blurring library. Fast blur-behind layout that parallels iOS.
https://github.com/camerakit/blurkit-android
android android-library blurkit-android blurring-libraries java
Last synced: 4 days ago
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The missing Android blurring library. Fast blur-behind layout that parallels iOS.
- Host: GitHub
- URL: https://github.com/camerakit/blurkit-android
- Owner: CameraKit
- License: mit
- Created: 2016-11-06T03:14:58.000Z (about 8 years ago)
- Default Branch: master
- Last Pushed: 2021-04-03T23:18:57.000Z (over 3 years ago)
- Last Synced: 2024-10-29T17:54:37.015Z (2 months ago)
- Topics: android, android-library, blurkit-android, blurring-libraries, java
- Language: Java
- Homepage:
- Size: 5.98 MB
- Stars: 3,731
- Watchers: 76
- Forks: 310
- Open Issues: 36
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
## What Is BlurKit?
BlurKit is an extraordinarily easy to use and performant utility to render real time blur effects in Android.
## Perfomance
BlurKit is faster than other blurring libraries due to a number of bitmap retrieval and drawing optimizations. We've been logging benchmarks for the basic high-intensity tasks for a 300dp x 100dp BlurView:
| Task | BlurKit time | Avg. time without BlurKit |
| --------------------------| -------------------| ----------------------- |
| Retrieve source bitmap | 1-2 ms | 8-25 ms |
| Blur and draw to BlurView | 1-2 ms | 10-50ms |
This results in an average work/frame time of 2-4ms, which will be a seamless experience for most users and apps.
## Setup
Add __BlurKit__ to the dependencies block of the app level `build.gradle`:
```groovy
dependencies {
implementation 'io.alterac.blurkit:blurkit:1.1.0'
}
```
## Usage
### BlurLayout
Add a `BlurLayout` to your XML layout just like any other view.
```xml
```
In the `Main_Activity.java` you need to override the `onStart()` and `onStop()` methods to include the `BlurLayout` functionality.
```java
BlurLayout blurLayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
blurLayout = findViewById(R.id.blurLayout);
}
@Override
protected void onStart() {
super.onStart();
blurLayout.startBlur();
}
@Override
protected void onStop() {
blurLayout.pauseBlur();
super.onStop();
}
```
The layout background will continuously blur the content behind it. If you know your background content will be somewhat static, you can set the layout `fps` to `0`. At any time you can re-blur the background content by calling `invalidate()` on the `BlurLayout`.
```xml
```
Other attributes you can configure are the blur radius and the downscale factor. Getting these to work together well can take some experimentation. The downscale factor is a performance optimization; the bitmap for the background content will be downsized by this factor before being drawn and blurred.
```xml
```
### Creating BlurKit Outside Of A Layout
You can use the `BlurKit` class which has a few useful blurring utilities. Before using this class outside of a `BlurLayout`, you need to initialize `BlurKit`.
```java
public class MyApplication extends Application {
@Override
public void onCreate() {
BlurKit.init(this);
}
}
```
You can blur a `View`, or a `Bitmap` directly.
```java
// View
BlurKit.getInstance().blur(View src, int radius);
// Bitmap
BlurKit.getInstance().blur(Bitmap src, int radius);
```
You can also __fastBlur__ a `View`. This optimizes the view blurring process by allocating a downsized bitmap and using a `Matrix` with the bitmaps `Canvas` to prescale the drawing of the view to the bitmap.
```java
BlurKit.getInstance().fastBlur(View src, int radius, float downscaleFactor);
```
## Upcoming Features
- [ ] `SurfaceView` support
- [ ] Support for use outside of an `Activity` (dialogs, etc.)
- [ ] Enhance retrieval of background content to only include views drawn behind the `BlurLayout`.
## License
BlurKit is [MIT licensed](https://github.com/CameraKit/blurkit-android/blob/master/LICENSE).
---
Blurkit is a sister project of [CameraKit](https://github.com/CameraKit/camerakit-android) and maintained by the CameraKit team.