Re: Change text font size globally

[Kieren MacMillan]

Hi Lukas,

>> I’m curious… For years I’ve been using the following snippet for absolute 
>> font sizing:
>> [... allowGrobCallback and absFontSize ...]
> For historians: The original seems to be 
> https://mail.gnu.org/archive/html/lilypond-user/2013-07/msg00429.html, 
> written by Jan-Peter Voigt with input from David Kastrup.

Thread start (because the GNU mail UI doesn’t always make thread starts easy to 
find!):
https://mail.gnu.org/archive/html/lilypond-user/2013-07/msg00250.html

> Your (or Jan-Peter's) function allows setting an absolute font size for grobs 
> (assuming the grob's stencil depends on a fontsize setting reflecting 
> "absolute" font size in a meaningful way).
> 
> Valentin's proposal of re-defining toplevel-text-handler effectively adds an 
> \abs-fontsize command in front of all top-level markups (i.e. \markup ... 
> outside of scores).
> 
> My \abs function allows to write \abs \markup ... instead of \markup 
> \abs-fontsize ... - which is not terribly useful, but was created in response 
> to Werner's question whether it's possible to create a replacement for 
> \markup that automatically sets an absolute fontsize.
> 
> So while these situations are all connected, they are in fact distinct.

Thanks for the clarification!

>> 2. Do we need all of these different absolute-fontsize functions? Can’t we 
>> have one that Does All The Right Things™?
> I think this question is too general to be meaningful, but it might be 
> worthwhile to try and make it more well-defined.
> 
> Recently I created a score and parts for a symphony, and I really wasn't 
> happy that changing the global-staff-size for the score also affected the 
> font sizes for the score header (title etc.). But on the other hand, there 
> are obviously markups that _should_ scale along with the staff size.
> 
> So maybe there should be an internal distinction between markups of one or 
> the other kind that's not being made yet.

+1

>> 3. Does it make sense to get at least one of these into the main codebase, 
>> instead of having them all floating around in the ether[net]?
> At the very least, \allowGrobCallback seems sufficiently general and elegant 
> for this. But I'm not sure whether there are applications besides font 
> properties. Or, maybe better yet: The LSR and, maybe, a Documentation snippet 
> might be the right place for Jan-Peter's function.

For sure.
One Day™ I’ll have my dev setup in place to be able to make quick submits like 
this one should be…
<sigh>

— Kieren
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