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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 | 8x 8x 8x 8x 10x 8x 2x 8x 2x 2x 6x 2x 2x 20x 6x 28x 48x 8x 8x 3x 8x 2x 2x 1x 6x 2x 2x 2x 2x 2x 2x 2x 2x | /* Copyright © 2005-2017 Kuali, Inc. - All Rights Reserved
* You may use and modify this code under the terms of the Kuali, Inc.
* Pre-Release License Agreement. You may not distribute it.
*
* You should have received a copy of the Kuali, Inc. Pre-Release License
* Agreement with this file. If not, please write to license@kuali.co.
*/
import pdfjs from 'pdfjs-dist'
import React from 'react'
class ReactPdf extends React.Component {
constructor (props) {
super(props)
this.state = {}
pdfjs.workerSrc = `${props.pdfUrl}/pdf.worker.js`
}
static propTypes = {
file: React.PropTypes.string,
content: React.PropTypes.string,
page: React.PropTypes.number,
scale: React.PropTypes.number,
onDocumentComplete: React.PropTypes.func,
onPageComplete: React.PropTypes.func
}
static defaultProps = {
page: 1,
scale: 1.0
}
componentDidMount () {
this._loadPDFDocument(this.props)
}
_loadPDFDocument = props => {
if (props.file && typeof props.file === 'string') {
pdfjs.getDocument(props.file).then(this._onDocumentComplete)
} else {
console.error('ReactPDF component only works with urls')
}
}
componentWillReceiveProps (newProps) {
if (newProps.file && newProps.file !== this.props.file) {
this.setState({ page: null })
this._loadPDFDocument(newProps)
} else if (
this.state.pdf &&
newProps.page &&
newProps.page !== this.props.page
) {
this.setState({ page: null })
this.state.pdf.getPage(newProps.page).then(this._onPageComplete)
}
}
componentDidUpdate (prevProps, prevState) {
if (
this.state.page !== prevState.page ||
this.props.scale !== prevProps.scale
) {
this._renderPdf()
}
}
render () {
return (
<div style={{ overflow: 'auto' }}>
<canvas
ref={ref => {
this.pdfCanvasRef = ref
}}
/>
</div>
)
}
_onDocumentComplete = pdf => {
this.setState({ pdf })
if (
this.props.onDocumentComplete &&
typeof this.props.onDocumentComplete === 'function'
) {
this.props.onDocumentComplete(pdf.numPages)
}
pdf.getPage(this.props.page).then(this._onPageComplete)
}
_onPageComplete = page => {
this.setState({ page })
if (
this.props.onPageComplete &&
typeof this.props.onPageComplete === 'function'
) {
this.props.onPageComplete(page.pageIndex + 1)
}
}
_renderPdf = () => {
if (this.pdfCanvasRef && this.state.page) {
const canvas = this.pdfCanvasRef
const context = canvas.getContext('2d')
const scale = this.props.scale
const viewport = this.state.page.getViewport(scale)
canvas.height = viewport.height
canvas.width = viewport.width
const renderContext = {
canvasContext: context,
viewport
}
this.state.page.render(renderContext)
}
}
}
export default ReactPdf
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