Controlling the eldoc-box position

[karthink]

Hi,

Thank you for writing eldoc-box -- it's a very slick alternative to eldoc-doc-buffer.

Is it possible to specify (by pixel or line number) where the eldoc-box appears on the screen?

Here's the context:

I'm working on a replacement for org-mode's LaTeX preview system, which is planned to be included in Org 9.7. The new system generates previews asynchronously and very fast, fast enough that you can preview LaTeX fragments as you type. To display this, I implemented a child-frame version of the previews:

https://user-images.githubusercontent.com/8607532/228973013-0a8c69d2-c342-4bd7-860b-7df397ce630f.mp4

However from discussions with the Org maintainers I was told to show the live previews with Eldoc instead, and then folks can customize how it's displayed (echo area/dedicated buffer/child frame) with eldoc-display-functions, using eldoc-box if they want "pop-up" behavior like in the above video.

However, eldoc-box-hover-at-point-mode obscures the LaTeX fragment being edited with the box:

Fragment being edited:

Fragment previewed with eldoc box (Can't preview live because it covers the fragment):

Is it possible to specify where the box should appear dynamically? In my from-scratch child-frame implementation I place it immediately below the LaTeX environment being edited, whose pixel-position I know.

Display child-frame under the edited LaTeX env:

[casouri]

Yeah, you can set eldoc-box-position-function to a custom function. But note that eldoc-box-hover-at-point-mode modifies that value, so you might need to change it in eldoc-box-hover-at-point-mode-hook...

[karthink]

Thank you, that resolves the issue!