import React, { Component } from 'react'; import 'antd-mobile/dist/antd-mobile.less'; import styles from './index.less'; import router from 'umi/router'; import html2canvas from 'html2canvas'; import { Toast } from 'antd-mobile'; import moment from 'moment'; class DnaAppRaisal extends Component { constructor(props) { super(props); this.state = { flag: false, imgUri: null, geneDom: '' }; } componentWillMount = () => {}; componentDidMount = () => { let geneCode = this.props.ckuCertificate.geneCode || '' if(geneCode == '')return let colorList = ['188, 159, 233','29, 207, 238', '127, 144, 254', '218, 140, 67', '127, 223, 114', '205, 91, 190', '109, 201, 217', '234, 85, 89', '34, 144, 140', '239, 217, 119', '177, 82, 87', '74, 183, 144', '86, 101, 155', '202, 47, 28', '35, 193, 43', '161, 80, 206', '39, 145, 255', '34, 221, 129', '0, 237, 255', '128, 188, 0', '40, 155, 192', '243, 122, 73', '181, 82, 77', '111, 74, 246', '53, 179, 200', '64, 117, 187'] let n = 0 let num = 26 let width = 32 let gene let geneDom = '' gene = this.setGene(geneCode) gene = gene.split('') for (let i = 0; i < num; i++) { geneDom += '
' for (let j = 0; j < 6; j++) { n += 1 let t = gene[n]; if (isNaN(t)) { t = j + 2 } let opacity = this.setOpactiy(t) geneDom+="" } geneDom += '
' } this.setState({ geneDom: geneDom }) }; componentWillUnmount = () => {}; setGene = (geneCode) => { let gene = geneCode gene = gene.split('X##').join('244') gene = gene.split('Y##').join('255') gene = gene.split('###').join('369') return gene } setOpactiy = (n) => { if(n == 0){ return 1 }else{ return '.'+(10-n) } } open = () => { Toast.loading('生成中', 0); const certificate = document.getElementById('certificate'); const newCanvas = document.createElement('canvas'); const domWidth = parseInt(window.getComputedStyle(certificate).width); const domHeight = parseInt(window.getComputedStyle(certificate).height); newCanvas.width = domWidth; newCanvas.height = domHeight; newCanvas.style.width = domWidth + 'px'; newCanvas.style.height = domHeight + 'px'; const _this = this; html2canvas(certificate, { canvas: newCanvas, scale: 1, x: 0, y: 0, scrollX: 0, scrollY: 0, }).then(canvas => { const imgUri = canvas.toDataURL('image/png'); _this.setState({ imgUri, flag: true, }); Toast.hide(); }); }; closed = () => { this.setState({ flag: false, }); }; render() { const data = this.props.ckuCertificate; const { flag, imgUri, geneDom } = this.state; return (