IE11 print margins in iFrame

Outside to iFrame, and with outher browsers it’s all ok! Into IE11 iframe not.

<iframe src="http://mozilla.github.io/pdf.js/web/viewer.html"></iframe>

Configuration:

• Web browser and its version: IE11
• Operating system and its version: WIN 10
• PDF.js version: 1.7.225
• Is an extension: -

Steps to reproduce the problem:

1. Open the official demo page in a iframe with IE11
2. Print

Print outside iframe:

Print into iframe:

Wrong:

Could you help me? thanks!

[k-ode]

While I’m not entirely sure why, IE11 (and older version of IE) has issues with using window.print in an iframe. Using window.document.execCommand('print', false, null); seems to get the desired results, but is not supported in Firefox.

If you are building pdf.js from source, you can change print.call(window) in pdf_print_service.js to this:

if (document.queryCommandSupported('print')) {
  window.document.execCommand('print', false, null);
} else {
  print.call(window);
}

For a more complete solution, you might also want to check if you are in an iframe.

[timvandermeij]

Closing IE11/Edge (non-Chromium-based) issues in response to #11211. Please note that, as outlined in https://github.com/mozilla/pdf.js/wiki/Frequently-Asked-Questions#faq-support, only bugs which completely prevent the library and/or the default viewer from running will be accepted.