DOM class definitions before viewport establishes them?

1

I’ve created a minimap scroller, which works great, but gets its syntax highlighted code display from CodeMirror and needs viewportMargin: Infinity in order to grab all the DOM content including spans with classes (variable, atom etc)

As stated in the manual, setting Infinity as the value does have a big hit on performance. It’s fine once loaded, but is causing quite a delay to paint to screen initially on say a 5000 line file.

Is there anywhere else in CodeMirror (even in its internals), where I can get the content with the classes to be applied to areas or is it really on defined when within viewport margin?

2

You could just compute it separately using the runmode addon

3

Ah OK, I’ve not really delved into runmode as yet, but sounds ideal for this job, thanks.

4

Just wanted to say I’ve implemented runMode now instead and it does indeed work brilliantly. Minimap now loading extremely quickly and usable an on a 5000+ line doc. Many thanks Marijn!