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import React, { Component } from 'react'
import { renderThumbnail } from './upload.helpers'
export default class UploadImageComponent extends Component {
constructor(props) {
super(props)
document.body.addEventListener("dragover", this.dragOver.bind(this))
document.body.addEventListener("dragleave", this.dragLeave.bind(this))
document.body.addEventListener("drop", this.upload.bind(this))
}
dragOver(e) {
e.stopPropagation()
e.preventDefault()
document.body.className = 'dragging'
}
dragLeave(e) {
e.stopPropagation()
e.preventDefault()
document.body.className = ''
}
upload(e) {
e.preventDefault()
document.body.className = ''
const files = e.dataTransfer ? e.dataTransfer.files : e.target.files
let i
let file
for (i = 0; i < files.length; i++) {
file = files[i]
if (file && file.type.match('image.*')) break
}
if (!file) {
console.log('No file specified')
return
}
const fr = new FileReader()
fr.onload = fileReaderEvent => {
fr.onload = null
const img = new Image()
img.onload = () => {
img.onload = null
this.resizeAndUpload(file, img)
}
img.src = fileReaderEvent.target.result
}
fr.readAsDataURL(file)
}
resizeAndUpload(file, img) {
const canvas = renderThumbnail(img, this.props)
canvas.toBlob(blob => {
this.props.onUpload({ file, img, canvas, blob, freshen: true })
}, 'image/jpeg', this.props.quality || 80)
}
render() {
return (
<div className='uploadButton'>
<input
type="file"
accept="image/*"
onChange={this.upload.bind(this)}
required
/>
<div className='dragCurtain'>
<div className='dragLabel'>Drop image here</div>
</div>
</div>
)
}
}
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