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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 | import { FC, useRef } from 'react'; import { ErrorResponse } from '../../models/errorResponse'; import ErrorResult from '../error/ErrorResult'; import { GenerateResponse } from '../../models/generateResponse'; import { Record } from '../../models/generateRequest'; import jsPDF from 'jspdf'; import html2canvas from 'html2canvas'; import QrList from './qr/QrList'; import BarcodeList from './barcode/BarcodeList'; import styled from 'styled-components'; import NothingList from './nothing/NothingList'; type Props = { result: GenerateResponse | ErrorResponse; recordType: Record | null; }; const StyledResultArea = styled.div` width: 100%; max-width: 1200px; height: 300px; margin: 0 auto 0 auto; padding: 0; overflow-x: scroll; overflow-y: scroll; border: 1px solid black; `; const StyledConvertPDFArea = styled.div` aspect-ratio: 210 / 297; width: auto; height: 1485px; margin: 0 auto; background-color: #ffffff; border: 1px solid black; `; const StyledDownloadPDFButton = styled.button` width: 200px; height: 50px; font-size: 18px; margin: 10px auto 0 auto; display: block; `; const StyledErrorResultWrapper = styled.div` margin-top: 53px; ` const GenerateResult: FC<Props> = (props) => { // PDFに変換する対象のエリア const contentRef = useRef<HTMLDivElement>(null); // download処理 const handleDownloadPdf = async () => { if (!contentRef.current) return; try { // 1️: 指定した要素をキャプチャしてCanvasに変換 const canvas: HTMLCanvasElement = await html2canvas(contentRef.current); // 2: jsPDF インスタンスを作成(A4縦向き) const pdf: jsPDF = new jsPDF({ orientation: 'p', unit: 'mm', format: 'a4', }); // 3: PDFの幅を取得し、アスペクト比を維持した高さを計算 const pdfWidth: number = pdf.internal.pageSize.getWidth(); const pdfHeight: number = (canvas.height * pdfWidth) / canvas.width; // 4: canvasをPDFに追加(左上から配置) pdf.addImage({ imageData: canvas, x: 0, y: 0, width: pdfWidth, height: pdfHeight, }); // 5: PDFをダウンロード pdf.save('dashi-record.pdf'); } catch (e) { console.error(e); } }; return ( <> {'code' in props.result && 'message' in props.result ? ( <StyledErrorResultWrapper> <ErrorResult result={props.result} /> </StyledErrorResultWrapper> ) : ( <> {props.recordType === 'Qr' ? ( <> {/* Qr */} <StyledResultArea> {/* PDFに変換する対象のエリア start */} <StyledConvertPDFArea ref={contentRef}> <QrList visible_ids={props.result.visible_ids} /> </StyledConvertPDFArea> {/* PDFに変換する対象のエリア end */} </StyledResultArea> <div style={{ width: '100%' }}> <StyledDownloadPDFButton onClick={handleDownloadPdf}>PDFをダウンロード</StyledDownloadPDFButton> </div> </> ) : props.recordType === 'Barcode' ? ( <> {/* Barcode */} <StyledResultArea> {/* PDFに変換する対象のエリア start */} <StyledConvertPDFArea ref={contentRef}> <BarcodeList visible_ids={props.result.visible_ids} /> </StyledConvertPDFArea> {/* PDFに変換する対象のエリア end */} </StyledResultArea> <div style={{ width: '100%' }}> <StyledDownloadPDFButton onClick={handleDownloadPdf}>PDFをダウンロード</StyledDownloadPDFButton> </div> </> ) : ( // Nothing <NothingList visible_ids={props.result.visible_ids} /> )} </> )} </> ); }; export default GenerateResult; |