80 lines
2.9 KiB
80 lines
2.9 KiB
<!DOCTYPE html> |
|
<html> |
|
<head> |
|
<meta charset="UTF-8"> |
|
<title>'Hello, world!' base64 example</title> |
|
</head> |
|
<body> |
|
|
|
<h1>'Hello, world!' example</h1> |
|
|
|
<canvas id="the-canvas" style="border:1px solid black"></canvas> |
|
|
|
<!-- for legacy browsers we need to use compatibility.js --> |
|
<script src="../../web/compatibility.js"></script> |
|
|
|
<script src="../../build/pdf.js"></script> |
|
|
|
<script id="script"> |
|
// atob() is used to convert base64 encoded PDF to binary-like data. |
|
// (See also https://developer.mozilla.org/en-US/docs/Web/API/WindowBase64/ |
|
// Base64_encoding_and_decoding.) |
|
var pdfData = atob( |
|
'JVBERi0xLjcKCjEgMCBvYmogICUgZW50cnkgcG9pbnQKPDwKICAvVHlwZSAvQ2F0YWxvZwog' + |
|
'IC9QYWdlcyAyIDAgUgo+PgplbmRvYmoKCjIgMCBvYmoKPDwKICAvVHlwZSAvUGFnZXMKICAv' + |
|
'TWVkaWFCb3ggWyAwIDAgMjAwIDIwMCBdCiAgL0NvdW50IDEKICAvS2lkcyBbIDMgMCBSIF0K' + |
|
'Pj4KZW5kb2JqCgozIDAgb2JqCjw8CiAgL1R5cGUgL1BhZ2UKICAvUGFyZW50IDIgMCBSCiAg' + |
|
'L1Jlc291cmNlcyA8PAogICAgL0ZvbnQgPDwKICAgICAgL0YxIDQgMCBSIAogICAgPj4KICA+' + |
|
'PgogIC9Db250ZW50cyA1IDAgUgo+PgplbmRvYmoKCjQgMCBvYmoKPDwKICAvVHlwZSAvRm9u' + |
|
'dAogIC9TdWJ0eXBlIC9UeXBlMQogIC9CYXNlRm9udCAvVGltZXMtUm9tYW4KPj4KZW5kb2Jq' + |
|
'Cgo1IDAgb2JqICAlIHBhZ2UgY29udGVudAo8PAogIC9MZW5ndGggNDQKPj4Kc3RyZWFtCkJU' + |
|
'CjcwIDUwIFRECi9GMSAxMiBUZgooSGVsbG8sIHdvcmxkISkgVGoKRVQKZW5kc3RyZWFtCmVu' + |
|
'ZG9iagoKeHJlZgowIDYKMDAwMDAwMDAwMCA2NTUzNSBmIAowMDAwMDAwMDEwIDAwMDAwIG4g' + |
|
'CjAwMDAwMDAwNzkgMDAwMDAgbiAKMDAwMDAwMDE3MyAwMDAwMCBuIAowMDAwMDAwMzAxIDAw' + |
|
'MDAwIG4gCjAwMDAwMDAzODAgMDAwMDAgbiAKdHJhaWxlcgo8PAogIC9TaXplIDYKICAvUm9v' + |
|
'dCAxIDAgUgo+PgpzdGFydHhyZWYKNDkyCiUlRU9G'); |
|
|
|
// Disable workers to avoid yet another cross-origin issue (workers need |
|
// the URL of the script to be loaded, and dynamically loading a cross-origin |
|
// script does not work). |
|
// |
|
// PDFJS.disableWorker = true; |
|
|
|
// |
|
// The workerSrc property shall be specified. |
|
// |
|
PDFJS.workerSrc = '../../build/pdf.worker.js'; |
|
|
|
// Opening PDF by passing its binary data as a string. It is still preferable |
|
// to use Uint8Array, but string or array-like structure will work too. |
|
PDFJS.getDocument({data: pdfData}).then(function getPdfHelloWorld(pdf) { |
|
// Fetch the first page. |
|
pdf.getPage(1).then(function getPageHelloWorld(page) { |
|
var scale = 1.5; |
|
var viewport = page.getViewport(scale); |
|
|
|
// Prepare canvas using PDF page dimensions. |
|
var canvas = document.getElementById('the-canvas'); |
|
var context = canvas.getContext('2d'); |
|
canvas.height = viewport.height; |
|
canvas.width = viewport.width; |
|
|
|
// Render PDF page into canvas context. |
|
var renderContext = { |
|
canvasContext: context, |
|
viewport: viewport |
|
}; |
|
page.render(renderContext); |
|
}); |
|
}); |
|
</script> |
|
|
|
<hr> |
|
<h2>JavaScript code:</h2> |
|
<pre id="code"></pre> |
|
<script> |
|
document.getElementById('code').textContent = |
|
document.getElementById('script').text; |
|
</script> |
|
</body> |
|
</html>
|
|
|