Re: feature/icomplete-vertical

[Eli Zaretskii <eliz@gnu.org>]

> Date: Mon, 05 Oct 2020 11:11:28 +0000
> From: Gregory Heytings <ghe@sdf.org>
> cc: João Távora <joaotavora@gmail.com>, spacibba@aol.com,
>         emacs-devel@gnu.org, casouri@gmail.com, juri@linkov.net
> 
> > Not sure what should be canonical here.  AFAIU, just using 
> > window-text-pixel-size and comparing with the window dimensions is all 
> > that's needed.
> 
> Just calculating the window dimensions is already a nontrivial task. 
> There are two cases: a miniwindow-only frame, and the "normal" case.  In 
> the first case you need to use frame-height, and multiply it with the 
> pixel height of the "default" face.  In the second case you can get the 
> maximal dimensions with max-mini-window-height, and multiply it by the 
> pixel height of the "default" face.  But you cannot just multiply 
> max-mini-window-height by that height, that would be too easy.  There are 
> again two cases: either max-mini-window-height is an integer, in which 
> case you can just do that multiplication, or it is a floating point 
> number, in which case you have to multiply that number by frame-height and 
> truncate it, and multiply the resulting number by the pixel height of the 
> "default" face...

Well, if someone wants to write a function which does all that, I'm
sure it will be welcome (assuming that window.el doesn't yet have
something like that already).