react-native-image-crop-tools

Native image crop tools with embeddable UI and on the fly aspect ratio switching

This repository aims to update the forked repository to more recent standards and version. You can check the original repository out here.

Previews

Getting started

yarn add react-native-image-crop-tools

or

npm install react-native-crop-tools

Only RN > 0.61.x || < 0.69.x is supported.

Why another cropping library?

Most cropping tools available for RN are usually wrappers over popular native tools which itself isn't a bad thing. But this means you are stuck with their UI and feature set. The ones made in RN are not the most optimized and correct tools.

Features

1. Native views. Which means performance even on low end devices.
2. You can embed the view into you own UI. It's not very customizable (yet)
3. Change and lock/unlock aspect ratio on the fly (This is the main reason I am making this library)

NOTE

This library is not supposed to work with local images. There are very few usecases for that. You need to provide a sourceUrl string which you can obtain from image pickers or downloading using rn-fetch-blob

Usage

import { CropView } from 'react-native-image-crop-tools';

        <CropView
          sourceUrl={uri}
          style={styles.cropView}
          ref={cropViewRef}
          onImageCrop={(res) => console.warn(res)}
          keepAspectRatio
          aspectRatio={{width: 16, height: 9}}
        />

Two methods are exposed on the ref you can use them as follows

  this.cropViewRef.saveImage(true, 90 // image quality percentage)
  this.cropViewRef.rotateImage(true // true for clockwise, false for counterclockwise)

Props

Name	Description	Default
sourceUrl	URL of the source image	null
aspectRatio	Aspect ratio of the cropped image	null
keepAspectRatio	Locks the aspect ratio to given aspect ratio	false
iosDimensionSwapEnabled	(iOS Only) Swaps the width and height of the crop rectangle upon rotation	false

Contributing

See the contributing guide to learn how to contribute to the repository and the development workflow.

License

MIT

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Made with create-react-native-library