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numbas / Numbas

A completely browser-based e-assessment/e-learning system, with an emphasis on mathematics
http://www.numbas.org.uk
Apache License 2.0
200 stars 118 forks source link

Typeset all LaTeX before printing #875

Open christianp opened 2 years ago

christianp commented 2 years ago

If you start an exam and immediately try to print it, unvisited questions have not had their LaTeX rendered. We should use the beforeprint event to make sure every question is typeset before printing.

christianp commented 1 year ago

Since MathJax is asynchronous, I'm not sure that a beforeprint listener could do much beyond warning that the TeX hasn't been rendered yet.

christianp commented 1 year ago

beforeprint is only supported by 94% of browsers at the moment: https://caniuse.com/beforeafterprint