Csikos Bela
14. Oktober 2016 um 16:56
Wolfgang Schuster írta:


I would like to set up Tex Gyre Adventor sans serif
font as my math font (even if it doesn't havemath symbols). I have 
two questions related to this problem.

1. In latex I can specify 
math font versions, define a specific font as math serif / normal, 
another as mathsans serif etc. 
(http://milde.users.sourceforge.net/LUCR/Math/math-font-selection.xhtml).
Is this possiblein context, and if yes, how?

ConTeXt doesn’t use the same style switches as LaTeX.


Thanks. Is there a way to change font family locally in math mode?
For example how can I use serif if sans serif is the default math font?
It depends what you want to achieve, for string you can use \text{...} which uses the text font.
3. You can use the font fallback mechanism to replace certain character 
in the math font with characters from a text font.

\definefontfamily     [mathfont] [rm] [Tex Gyre Bonum]
\definefallbackfamily [mathfont] [mm] [Tex Gyre Adventor] 
[preset=math:lowercaseitalic]
\definefallbackfamily [mathfont] [mm] [Tex Gyre Adventor] 
[tf=style:italic,range=0x068,offset=0x0210E]% Planck constant
\definefontfamily     [mathfont] [mm] [Tex Gyre Pagella Math]

\setupbodyfont[mathfont,10pt]



I played a lot with these setups and have questions.
I use this font setting:

\definefontfamily     [docuf] [rm] [TeX Gyre Bonum] 
\definefontfamily     [docuf] [ss] [TeX Gyre Adventor]
\definefontfamily     [docuf] [tt] [Latin Modern Mono] [features=none]

\definefallbackfamily [docuf] [mm] [Tex Gyre Adventor] [preset=math:uppercasenormal]%,scale=.6]
\definefallbackfamily [docuf] [mm] [Tex Gyre Adventor] [preset=math:uppercasebold]%,scale=.6]
\definefallbackfamily [docuf] [mm] [Tex Gyre Adventor] [preset=math:uppercaseitalic]%,scale=.6]
\definefallbackfamily [docuf] [mm] [Tex Gyre Adventor] [preset=math:uppercasebolditalic]%,scale=.6]

\definefallbackfamily [docuf] [mm] [Tex Gyre Adventor] [preset=math:lowercasenormal]%,scale=.6]
\definefallbackfamily [docuf] [mm] [Tex Gyre Adventor] [preset=math:lowercasebold]%,scale=.6]
\definefallbackfamily [docuf] [mm] [Tex Gyre Adventor] [preset=math:lowercaseitalic]%,scale=.6]
\definefallbackfamily [docuf] [mm] [Tex Gyre Adventor] [preset=math:lowercasebolditalic]%,scale=.6]

\definefallbackfamily [docuf] [mm] [Tex Gyre Adventor] [preset=math:digitsnormal]%,scale=.6]
\definefallbackfamily [docuf] [mm] [Tex Gyre Adventor] [preset=math:digitsbold]%,scale=.6]
\definefallbackfamily [docuf] [mm] [Tex Gyre Adventor] [preset=math:digitsitalic]%,scale=.6]
\definefallbackfamily [docuf] [mm] [Tex Gyre Adventor] [preset=math:digitsbolditalic]%,scale=.6]

\definefontfamily     [docuf] [mm] [TeX Gyre Pagella Math]

\setupbodyfont[docuf,24pt]

1. If I want to use a scale factor is it possible the give the scale factor by using
the preset a,b,c,d,x,xx values? Or I must specify the scale factors as numbers?
Only numbers are possible.
2. Scaling occurs compared to which font in the definition list?

3. I found that if I write \definefontfamily     [docuf] [mm] [TeX Gyre Pagella Math]
before \definefallbackfamily lines, the latter have no effect. Is this normal?
Shouldn't the order of definition lines be indifferent?
The fallbackfamily settings are applied to a typeface and the \definefontfamily commands creates
the typeface, without \definefontfamily the fallbacks are never used because there is no font which
can use the settings.
4. If I write a paragraph with different font size, how can I scale the embedded math
too automatically? For example if I write

\placefigure[here]{Figure title}{\ss\tfxx
A B C D \math{E~F~G~}}

A B C D is typeset with small fonts but E F G not; it will be huge compared to
A B C D. I can't manually scale the math part because it is inserted here
by chemfig module and I can't redefine how it typesets fonts.
The x and xx perform not the same scaling as a, b etc. but you can define your
own sizes which behave the same way as a etc.

\definefontsize[m]
\definefontsize[n]

\definebodyfontenvironment[default][m=0.8,n=0.9]

\starttext

{\tfm This paragraph contains text and $math$.}

{\tfn This paragraph contains text and $math$.}

This paragraph contains text and $math$.

{\tfa This paragraph contains text and $math$.}

{\tfb This paragraph contains text and $math$.}

\stoptext

Wolfgang