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https://github.com/falconshark/hologram-image-upload

React image uploader with dropzone and cropper function
https://github.com/falconshark/hologram-image-upload

crop dropzone html5 image-upload react

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React image uploader with dropzone and cropper function

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# Hologram Image Upload

React image uploader with dropzone and cropper function, which used [React Dropzone](https://github.com/okonet/react-dropzone) and [React Image Crop](https://github.com/DominicTobias/react-image-crop).

You can please feel free to open issues or pull request.

[![npm]( http://img.shields.io/npm/v/npm.svg)](https://www.npmjs.com/package/hologram-image-upload)

## Demo
https://hologram.sardo.work/

## Features
- Using dropzone to upload multiple image files
- Crop and preview image

## Browser Support
- Latest Firefox
- Latest Chrome
- IE 11 and Edge

## Installation
```bash
npm install hologram-image-upload --save
```

## Usage
```js
import Hologram from 'hologram-image-upload';
```

After version 2.5, you will not need require any css file now.

## Props

#### defaultFiles (optional)
Mockup images of dropzone. You could pass the name, url, and type of file, then it will be add to dropzone when Hologram mounted.

```jsx

```

#### uploader (optional)
The post url of your upload handler. You need to pass this prop or a custom upload function for everything to work.

```jsx

```

#### maxFiles (optional)
If files more than this number, it will not be uploaded. However, if number is -1, user will be allow to upload unlimited number of image. Default Number is -1.

```js
var maxFiles = 10;

```

#### Custom Upload Function (optional)
If you want, you can pass in your custom upload function as a prop. The function takes two arguments: The file information and the actual file data. This function MUST return a promise

```jsx
myUploadFunc(file, data) {
return new Promise((resolve, reject) => {
// FANCY TASKS HERE
// do this and this and this
// END OF FANCY TASKS
request.post(FANCY_URL).send(MY_FANCY_DATA).end((err, res) =>{
if (err) return reject(err)
resolve(res)
});
});
}

```

#### dropzoneConfig (optional)
Config of React Dropzone.
https://github.com/okonet/react-dropzone

```jsx
var dropzoneConfig = {
style : {
textAlign: 'center',
padding: '2.5em 0',
background: 'rgba(0,0,0,0.5)',
color: '#fff'
}
}

```

#### cropperConfig (optional)
Config of React Image Crop.
https://github.com/DominicTobias/react-image-crop

```jsx
var crop = {
x: 20,
y: 10,
}

```

#### onComplete(result) (optional)
Callback function which trigger when image uploaded.
It will pass a object which contain http response, you can use it to handler the result of upload.

## Contributing

You can clone this repository then start develop at sandbox, or feel free to open issue on github.

Build package:

```bash
npm run build
```

Watch package change and build it:

```bash
npm run watch
```