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PDF: add CMaps and fonts

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John Factotum
2024-09-28 17:41:38 +08:00
parent be76724699
commit 45d67a0db3
186 changed files with 186 additions and 7 deletions
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pdf.js
+11 -7
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@@ -1,16 +1,16 @@
const pdfjsPath = path => new URL(`vendor/pdfjs/${path}`, import.meta.url).toString()
import './vendor/pdfjs/pdf.mjs'
const pdfjsLib = globalThis.pdfjsLib
pdfjsLib.GlobalWorkerOptions.workerSrc =
new URL('vendor/pdfjs/pdf.worker.mjs', import.meta.url).toString()
pdfjsLib.GlobalWorkerOptions.workerSrc = pdfjsPath('pdf.worker.mjs')
const fetchText = async url =>
await (await fetch(new URL(url, import.meta.url))).text()
const fetchText = async url => await (await fetch(url)).text()
// https://github.com/mozilla/pdf.js/blob/642b9a5ae67ef642b9a8808fd9efd447e8c350e2/web/text_layer_builder.css
const textLayerBuilderCSS = await fetchText('vendor/pdfjs/text_layer_builder.css')
const textLayerBuilderCSS = await fetchText(pdfjsPath('text_layer_builder.css'))
// https://github.com/mozilla/pdf.js/blob/642b9a5ae67ef642b9a8808fd9efd447e8c350e2/web/annotation_layer_builder.css
const annotationLayerBuilderCSS = await fetchText('vendor/pdfjs/annotation_layer_builder.css')
const annotationLayerBuilderCSS = await fetchText(pdfjsPath('annotation_layer_builder.css'))
const render = async (page, doc, zoom) => {
const scale = zoom * devicePixelRatio
@@ -106,7 +106,11 @@ const makeTOCItem = item => ({
export const makePDF = async file => {
const data = new Uint8Array(await file.arrayBuffer())
const pdf = await pdfjsLib.getDocument({ data }).promise
const pdf = await pdfjsLib.getDocument({
data,
cMapUrl: pdfjsPath('cmaps/'),
standardFontDataUrl: pdfjsPath('standard_fonts/'),
}).promise
const book = { rendition: { layout: 'pre-paginated' } }