Re: font-latex-make-title-faces using scaled font height rather than size

Ralf Angeli <[email protected]> writes:

> * Steven E. Harris (2005-03-09) writes:
>
>> Starting a new document and inserting a \section{} macro, I noticed
>> the new font-latex-title-(1|2|3)-face fonts. The fonts looked too
>> big to my taste, so I decided to look into how they're initialized
>> to their default values.
>
> I had the same impression in case of XEmacs but didn't come around
> figuring out a better alternative for `face-height'.
>
>> However, (face-height 'default) returns 16. Related functions
>> `face-ascent' and `face-descent' return 12 and 4 respectively. They
>> all add up, but these are apparently not font /sizes/.
>>
>> Using (face-height 'default) as the base size for scaling produces
>> a family of 19, 23, and 28. More likely we're looking for a family
>> that scales from a base of 10, producing 12, 14, and 17.
>>
>> We need some function to get the size of a face. In XEmacs, at
>> least, I had a hard time figuring out how to get there, but did
>> find a way. Unfortunately, it requires converting, string to a
>> number, then a number to a string, concatenating that string with
>> another, then using a regexp to pull that number back out of the
>> string. Only the last part is my fault.
>
> Great!  Thanks for looking at this.  I checked a change based on
> your findings into CVS.
>
> I don't know if GNU Emacs is any better, but it really is disgusting
> through what hoops one has to jump to get the font size.

There are not many hoops involved in the code preview-latex uses for
that purpose.  Even though we have to have a somewhat heavy-weight
function for Emacs-21.x (we could just use the built-in functions when
using Emacs-22, but I have not yet attempted figuring out the proper
test for finding out whether the necessary functionality is there: it
requires the 4-argument face-attribute function).

-- 
David Kastrup, Kriemhildstr. 15, 44793 Bochum