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fix: use noto sans for text insertion on pdfs

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Use Noto Sans to gracefully handle inserting custom text
on PDF's. Previously we were using Helvetica which is a
standard PDF font but that would fail for any character
that couldn't be encoded in WinANSI.

Noto Sans was chosen as it has support for a large number
of languages and glyphs with challenges now being adding
support for CJK glyphs.
This commit is contained in:
Mythie
2024-05-23 13:07:37 +10:00
parent 4c0b772fc9
commit d58a88196a
7 changed files with 19 additions and 3 deletions
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8
packages/lib/server-only/pdf/insert-field-in-pdf.ts
View File

@ -1,6 +1,6 @@
// https://github.com/Hopding/pdf-lib/issues/20#issuecomment-412852821
import fontkit from '@pdf-lib/fontkit';
import { PDFDocument, StandardFonts } from 'pdf-lib';
import { PDFDocument } from 'pdf-lib';
import {
DEFAULT_HANDWRITING_FONT_SIZE,
@ -17,6 +17,10 @@ export const insertFieldInPDF = async (pdf: PDFDocument, field: FieldWithSignatu
res.arrayBuffer(),
);
const fontUbuntu = await fetch(process.env.FONT_NOTO_SANS_URI).then(async (res) =>
res.arrayBuffer(),
);
const isSignatureField = isSignatureFieldType(field.type);
pdf.registerFontkit(fontkit);
@ -41,7 +45,7 @@ export const insertFieldInPDF = async (pdf: PDFDocument, field: FieldWithSignatu
const fieldX = pageWidth * (Number(field.positionX) / 100);
const fieldY = pageHeight * (Number(field.positionY) / 100);
const font = await pdf.embedFont(isSignatureField ? fontCaveat : StandardFonts.Helvetica);
const font = await pdf.embedFont(isSignatureField ? fontCaveat : fontUbuntu);
if (field.type === FieldType.SIGNATURE || field.type === FieldType.FREE_SIGNATURE) {
await pdf.embedFont(fontCaveat);