35 lines
1,020 B
TypeScript
35 lines
1,020 B
TypeScript
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import { PDFWorkerHelper } from './worker-helper'
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import { saveAs } from './utils'
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import scoreinfo from './scoreinfo'
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let pdfBlob: Blob
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const _downloadPDF = async (imgURLs: string[], imgType: 'svg' | 'png', name?: string): Promise<void> => {
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if (pdfBlob) {
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return saveAs(pdfBlob, `${name}.pdf`)
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}
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const cachedImg = document.querySelector('img[src*=score_]') as HTMLImageElement
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const { naturalWidth: width, naturalHeight: height } = cachedImg
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const worker = new PDFWorkerHelper()
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const pdfArrayBuffer = await worker.generatePDF(imgURLs, imgType, width, height)
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worker.terminate()
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pdfBlob = new Blob([pdfArrayBuffer])
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saveAs(pdfBlob, `${name}.pdf`)
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}
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export const downloadPDF = async (): Promise<void> => {
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const imgType = scoreinfo.sheetImgType
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const pageCount = scoreinfo.pageCount
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const sheetImgURLs = Array.from({ length: pageCount }).map((_, i) => {
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return scoreinfo.baseUrl + `score_${i}.${imgType}`
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})
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return _downloadPDF(sheetImgURLs, imgType, scoreinfo.fileName)
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}
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