Michael Droettboom wrote:
> Darren Dale wrote:
>> On Wednesday 22 August 2007 4:20:08 pm Michael Droettboom wrote:
>>> Darren Dale wrote:
>>>> If you want all that flexibility, why not do it in the usual way:
>>>>
>>>> #mathtext.it.family : 'serif'
>>>> #mathtext.it.style : 'oblique'
>>> That seems reasonable. I think I had a mental block around this because
>>> of the verbosity (and seeing a font specification as a single unit), but
>>> it does seem to fit in much better with the existing options (i.e. a
>>> subset of font.*).
>>>
>>> *IF* fontconfig is ever adopted, we could use fontconfig patterns as an
>>> alternative, which are at least some kind of standard.
>>
>> Right:
>> mathtext.it : serif-12:italic # use the default serif, 12 pt italic
>> or
>> mathtext.it : times:italic # use the times italic font, default size
>>
>> Could this syntax be adopted, even without fontconfig? Then if we
>> decided to use fontconfig in the future, the disruption would not be
>> too great.
>
> Sure, it's certainly an easy enough format to support.
>
> Of course, the matching algorithm used by font_manager.py is different
> from fontconfig. font_manager.py essentially looks for an exact match
> or falls back to a single default. fontconfig does a nearest neighbor
> search, so often finds a better alternative. So even if they use the
> same syntax, the results will be different (in some side cases) if we
> ever move over to fontconfig. (There are pros and cons to using
> fontconfig already discussed on this list. I'm not really advocating
> for or against it myself.)
>
> Still, IMHO, it's worth supporting this syntax now even though users may
> need to change their font specifiers later -- those changes should be
> more minor than if we go with
>
> #mathtext.it.family : 'serif'
> #mathtext.it.style : 'oblique'
>
> now.
I just committed code to support fontconfig patterns on all of the
mathtext.* fonts. You can also use fontconfig patterns in the pylab and
OO interfaces -- e.g.:
title("This is my title", fontproperties="Helvetica:italic")
(Note this doesn't actually use fontconfig -- I've just borrowed its
font-specification syntax.)
I was thinking we probably want to collapse the following options down
to one as well --->
#font.family : sans-serif
#font.style : normal
#font.variant : normal
#font.weight : medium
#font.stretch : normal
# note that font.size controls default text sizes. To configure
# special text sizes tick labels, axes, labels, title, etc, see the rc
# settings for axes and ticks. Special text sizes can be defined
# relative to font.size, using the following values: xx-small, x-small,
# small, medium, large, x-large, xx-large, larger, or smaller
#font.size : 12.0
probably to "font.default" ? For backward compatibility, we probably
want to continue to support these, but "font.default" would override
them if provided. Any ideas on how to best do that? I only have a
rough sense of where the new traited config stuff is going wrt backward
compatibility etc.
Cheers,
Mike
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