Drawing on top of the waterfall widget?

[agatti]

Hi there! I'm trying to create an SDR++ version of the ListenInfo plugin that is available for SDR#, and I'm looking for a way to draw station information on top of the waterfall widget from a plugin.

From what I've read in widgets/waterfall.h its seems like this is not really possible. Is that correct? (I've never used ImGUI so maybe I missed something...)

If that's correct and there's no way to overlay anything on top of it (I thought bandplan information was drawn from a plugin but it isn't the case), are there any plans to allow plugins to draw on the waterfall via registering a callback or something like that?

Thanks!