Printing

Note printing is handled by note_detail.js, in the printActiveNoteEvent method.

The application uses the print-this library to isolate .note-detail-printable:visible and prepare it for printing.

Some scripts like KaTeX are manually injected in the footer, and the CSS to be used is manually defined. The most important one is print.css.

Syntax highlighting

Syntax highlighting for code blocks is supported as well:

It works by injecting a Highlight.js stylesheet into the print.
The theme used is hard-coded (the Visual Studio Light theme, at the time of writing) in order not to have a dark background in print.
The Highlight.js library is not needed since the .note-detail-printable which is rendered already has the .hljs classes added to it in order to achieve the syntax highlighting.
The user's choice of whether to enable syntax highlighting is also respected.