Tech Lead at Taktile.
Formerly Firebase, Google
Notebook Backup AllCode generation with multi-cell clipboard pastingNotebook Deploy to S3
Sign a PDF and Adobe: Go F* Yourself
htl.html`<a href=${url} download="output.pdf">download</a>` // Link to download PDF
mutable pdfchange = undefined // holds file chooser events (so we can read uploaded files)
mutable sigchange = [] // holds file chooser events (so we can read uploaded files)
pdf = pdfchange.target.files[0] // PDF file
fixedDoc = await pdfLib.PDFDocument.load(await pdf.arrayBuffer()) // PDF we do not manipulate (so we can read parameters without
pdfDoc = (config, await pdfLib.PDFDocument.load(await pdf.arrayBuffer())) // PDF we will mutate
embed = promiseRecursive(
// Mutate PDF, overlays images onto pdf
sigchange.map(async (sig, i) => {
if (!sig.target.files[0]) return "N/A";
const page = pdfDoc.getPage(config.sigs[i].page - 1);
const jpgImage = await pdfDoc.embedJpg(
await sig.target.files[0].arrayBuffer()
);
page.drawImage(jpgImage, {
x: config.sigs[i].sX,
y: config.sigs[i].sY,
width: config.sigs[i].sW,
height: config.sigs[i].sH
});
return "OK";
})
)
url = {
// Generate a blob representing the rendered PDF
embed; // make sure image is in it first
const file = new Blob([await pdfDoc.save()], {
type: "application/pdf"
});
return URL.createObjectURL(file);
}
sigUrls = promiseRecursive(
// Generate a blobs for the signatures
sigchange.map(async (sig, i) => {
if (!sig.target.files[0]) return undefined;
const file = new Blob([await sig.target.files[0].arrayBuffer()], {
type: "image/jpg"
});
return URL.createObjectURL(file);
})
)
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