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react-native-image-cropper

(★ 160)

Crop your images with zoom and pan

파일 탐색기

최종 버전 다운로드 (.zip)

- - build.gradle
  - gradle.properties
  - gradlew
  - gradlew.bat
  - settings.gradle
- .babelrc
- .buckconfig
- .flowconfig
- .gitattributes
- .gitignore
- .watchmanconfig
- index.android.js
- index.ios.js
- package.json
- yarn.lock
- Image.js
- ImageCrop.js
- index.js
.eslintrc.json
.gitignore
.npmignore
.travis.yml
LICENSE
package.json
README.md
yarn.lock

# 설치 가이드

1. 코드 내려받기

git clone https://github.com/st0ffern/react-native-image-cropper

깃허브에서 프로젝트 코드 전체를 내 컴퓨터로 내려받습니다.

cd react-native-image-cropper

방금 내려받은 프로젝트 폴더 안으로 이동합니다.

2. Node.js

쉬움 추천

사전 준비물

Git GitHub에서 프로젝트 코드를 내려받으려면 필요합니다.
Node.js npm 명령어를 쓰려면 Node.js가 설치되어 있어야 합니다. LTS(장기지원) 버전을 추천합니다.

npm i -S react-native-image-cropper

이 명령어를 터미널에 그대로 입력해 실행하세요.

yarn add react-native-image-cropper

이 명령어를 터미널에 그대로 입력해 실행하세요.

✅ 명령어 실행 후 터미널에 나타나는 주소(보통 http://localhost:3000 형태)를 브라우저에서 열어보세요.

이 레포의 README에 적힌 실제 명령어를 그대로 가져왔습니다.

// repository documentation

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# react-native-image-cropper ![](https://img.shields.io/npm/v/react-native-image-cropper.svg) ![](https://img.shields.io/badge/gl--react->=2.1-05F561.svg) ![](https://img.shields.io/badge/gl--react--native->=2.28.0-05F561.svg)

[![Greenkeeper badge](https://badges.greenkeeper.io/stoffern/react-native-image-cropper.svg)](https://greenkeeper.io/)

This Image cropper is based on the gl-react-native [library](https://github.com/ProjectSeptemberInc/gl-react-native)

![Cropping View](https://media.giphy.com/media/l46CDga4bxZccVxWU/giphy.gif)

## Installation
```
npm i -S react-native-image-cropper
```
or
```
yarn add react-native-image-cropper
```

## Requirements
- `gl-react` You need to install gl-react. `npm i -S gl-react` 
- `gl-react-native` You need to install gl-react-native and link the repo in RN. `npm i -S gl-react-native & rnpm link` 
- `react-native` Android requires you to have RN 0.28 or higher!

#### `{ImageCrop}` Props
- `image` **(required)**: uri to image that should be cropped.
- `cropHeight` **(required)**: height of the image in cropped size.
- `cropWidth` **(required)**: width of the image in cropped size.
- `zoom`: range 0 - 100 setting zoom value. where 100 = full zoom. (default: 0)
- `maxZoom`: max zoom value, should be bigger than minZoom value (default: 100)
- `minZoom`: min zoom value, should be smaller than maxZoom value (default: 0) 
- `panToMove`: Use pan to move image? (default: true)
- `pinchToZoom` Use pinch to zoom image? (default: true)
- `quality`: a value from 0 to 1 to describe the quality of the snapshot. 0 means 0% (most compressed) and 1 means 100% (best quality). (default: 1)
- `type`: the file type default value is **"png"**, **"jpg"** is also supported. Refer to implementations to see more supported values. (default: jpg)
- `format`: the format of the output. Supported values: **"base64"**, **"file"**. (default: base64)
- `filePath`: if format is **"file"**, the path to write the image to (default: "")
- `pixelRatio`: the pixel ratio to use for the rendering. By default the screen pixel scale will be used.

#### `{ImageCrop}` Functions
- `crop()`: returns a base64 encoded image.

## Example
```js
...
import {ImageCrop} from 'react-native-image-cropper'

...
render() {
  return (
  <View>
    <ImageCrop 
      ref={'cropper'}
      image={this.state.image}
      cropHeight={this.state.height}
      cropWidth={this.state.width}
      zoom={this.state.zoom}
      maxZoom={80}
      minZoom={20}
      panToMove={true}
      pinchToZoom={true}
    />
    <Text onPress={this.capture()}>Capture()</Text>
  </View>
    
  )
} 
capture(){
  this.refs.cropper.crop()
  .then(base64 => console.log(base64))
}
...

```