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Da matemática Unicode do XeLaTeX ao texto digitado do ConTeXt

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Da matemática Unicode do XeLaTeX ao texto digitado do ConTeXt

Eu procuro uma maneira de traduzir a seguinte declaração do XeLaTeX (com base no unicode-mathpacote)

\setmainfont{Linux Libertine G}
\setsansfont[Scale=MatchLowercase]{Liberation Sans}
\setmonofont[Scale=MatchLowercase,
  ItalicFont=lmmono10-italic.otf,
  BoldFont=lmmonolt10-bold.otf,
  BoldItalicFont=lmmonolt10-boldoblique.otf,
  SmallCapsFont=lmmonocaps10-regular]{lmmono10-regular.otf}
\setmathfont[Scale=MatchLowercase]{TeX Gyre Termes Math}
\setmathfont[Scale=MatchLowercase, range=\mathup]{linlibertine_r_g.ttf}
\setmathfont[Scale=MatchLowercase, range=\mathbfup]{linlibertine_rz_g.ttf}
\setmathfont[Scale=MatchLowercase, range=\mathsfup]{liberationsans-regular.ttf}
\setmathfont[Scale=MatchLowercase, range=\mathsfit]{liberationsans-italic.ttf}
\setmathfont[Scale=MatchLowercase, range=\mathbfsfup]{liberationsans-bold.ttf}
\setmathfont[Scale=MatchLowercase, range=\mathbfsfit]{liberationsans-bolditalic.ttf}
\setmathfont[Scale=MatchLowercase, range=\mathtt]{lmmono10-italic.otf}
\setmathfont[Scale=MatchLowercase, range=\mathscr]{asana-math.otf}

em um texto datilografado do ConTeXt. Consegui definir as fontes serif, sanserif e mono; mas preciso de ajuda para as configurações matemáticas.

\startenvironment liberty
  \starttypescript [liberty]
    \definefontsynonym [Serif] [file:LinLibertine_R_G]
    \definefontsynonym [SerifCaps] [Serif] [features=smallcaps]
    \definefontsynonym [SerifItalic] [file:LinLibertine_RI_G]
    \definefontsynonym [SerifSlanted] [SerifItalic]
    \definefontsynonym [SerifBold] [file:LinLibertine_RZ_G]
    \definefontsynonym [SerifBoldItalic] [file:LinLibertine_RZI_G]
    \definefontsynonym [SerifBoldSlanted] [SerifBoldItalic]

    \definefontsynonym [Sans] [file:LiberationSans-Regular]
    \definefontsynonym [SansCaps] [Sans] [features=smallcaps]
    \definefontsynonym [SansItalic] [file:LiberationSans-Italic]
    \definefontsynonym [SansSlanted] [SansItalic]
    \definefontsynonym [SansBold] [file:LiberationSans-Bold]
    \definefontsynonym [SansBoldItalic] [file:LiberationSans-BoldItalic]
    \definefontsynonym [SansBoldSlanted] [SansBoldItalic]

    \definetypeface [liberty] [rm] [serif] [liberty] [default]
    \definetypeface [liberty] [ss] [sans] [liberty] [default] [rscale=0.816]
    \definetypeface [liberty] [tt] [mono] [modern] [default]
    \definetypeface [liberty] [mm] [math] [times] [default] [rscale=0.958]
  \stoptypescript
  \setupbodyfont[liberty, 10pt]
\stopenvironment

Desde já, obrigado.

PS: Alguém sabe o que é equivalente a Scale=MatchLowercase? Os rscales que usei vêm do arquivo de log produzido pelo XeLaTeX.

EDITAR. Conforme sugerido em um comentário, este é o início de uma solução baseada em fallback que, surpreendentemente, não funciona.

\startenvironment liberty
  \starttypescript [serif] [liberty]
    \definefontsynonym [Serif] [file:LinLibertine_R]
    \definefontsynonym [SerifCaps] [Serif] [features=smallcaps]
    \definefontsynonym [SerifItalic] [file:LinLibertine_RI]
    \definefontsynonym [SerifSlanted] [SerifItalic]
    \definefontsynonym [SerifBold] [file:LinLibertine_RZ]
    \definefontsynonym [SerifBoldItalic] [file:LinLibertine_RZI]
    \definefontsynonym [SerifBoldSlanted] [SerifBoldItalic]
  \stoptypescript

  \starttypescript [sans] [liberty]
    \definefontsynonym [Sans] [file:LiberationSans-Regular]
    \definefontsynonym [SansCaps] [Sans] [features=smallcaps]
    \definefontsynonym [SansItalic] [file:LiberationSans-Italic]
    \definefontsynonym [SansSlanted] [SansItalic]
    \definefontsynonym [SansBold] [file:LiberationSans-Bold]
    \definefontsynonym [SansBoldItalic] [file:LiberationSans-BoldItalic]
    \definefontsynonym [SansBoldSlanted] [SansBoldItalic]
  \stoptypescript

  \starttypescript [math] [liberty]
    \definefontfallback [asserif] [Serif] [0x0030-0x0039] % Digits
    \definefontfallback [asserif] [Serif] [0x0041-0x005a] % Latin capital letters
    \definefontfallback [asserif] [Serif] [0x0061-0x007a] % Latin small letters
    \definefontsynonym [MathRoman] [file:texgyretermes-math] [fallbacks=asserif]
  \stoptypescript

  \definetypeface [liberty] [rm] [serif] [liberty] [default]
  \definetypeface [liberty] [ss] [sans] [liberty] [default] [rscale=0.816]
  \definetypeface [liberty] [tt] [mono] [modern] [default]
  \definetypeface [liberty] [mm] [math] [liberty] [default] %[rscale=0.958]
  \setupbodyfont[liberty, 10pt]
\stopenvironment

Responder1

para Libertine já existe um texto digitado definido. Para obter o TeXGyre Pagella Math, que fica bem com o Libertine, carregue o Pagella primeiro:

\setupbodyfont[pagella]
\setupbodyfont[libertine,12pt]

\starttext
foo $bar$
\stoptext

as fontes são:

voss@shania:~> pdffonts zz.pdf
name                              type        encoding   emb sub uni object ID
--------------------------------- ----------- -------------- --- --- ---------
RSSLOW+LinLibertineO              CID Type 0C Identity-H yes yes yes     18  0
TQYEHR+TeXGyrePagellaMath-Regular CID Type 0C Identity-H yes yes yes     19  0

Responder2

Aqui está a solução. Cuidado, você precisará de uma versão recente do ConTeXt. No exemplo a seguir, usarei Baskervald, Corbel e Ubuntu Mono em vez de Libertine, Liberation e Latin Modern Mono. Nossa fonte matemática mista será baseada no Pagella Math.

Em primeiro lugar, deve-se conhecer o código dos glifos matemáticos dentro de uma fonte matemática Opentype. Eles estão, por exemplo, na tabela de caracteres do MS Word. Para Pagella Math temos:

  • 0x30-0x39 = 0-9
  • 0x41-0x5A = AZ romano vertical
  • 0x61-0x7A = az romano vertical
  • 0x1D434-0x1D44D = itálico romano AZ
  • 0x1D44E-0x1D467 = itálico romano az
  • 0x1D400-0x1D419 = AZ romano em negrito vertical
  • 0x1D41A-0x1D433 = az romano em negrito vertical
  • 0x1D468-0x1D481 = itálico negrito romano AZ
  • 0x1D482-0x1D49B = itálico negrito romano az
  • 0x1D5A0-0x1D5B9 = vertical sem serifa AZ
  • 0x1D5BA-0x1D5D3 = vertical sem serifa az
  • 0x1D608-0x1D621 = itálico sem serifa AZ
  • 0x1D622-0x1D63B = itálico sem serifa az
  • 0x1D5D4-0x1D5ED = negrito vertical sem serifa AZ
  • 0x1D5EE-0x1D607 = negrito vertical sem serifa az
  • 0x1D63C-0x1D655 = itálico negrito sem serifa AZ
  • 0x1D656-0x1D66F = itálico negrito sem serifa az
  • 0x1D670-0x1D689 = vertical mono AZ
  • 0x1D68A-0x1D6A3 = vertical mono az

Agora usamos o mecanismo de fallback e a opção offset para fazer o mapeamento:

\startenvironment liberty
    % 0x30-0x39 = 0-9 within both Pagella Math and Baskervald
    \definefontfallback [baskervaldmath] [file:BaskervaldADFStd] [0x30-0x39] [force=yes]
    % 0x41-0x5A = upright roman A-Z within both Pagella Math and Baskervald
    \definefontfallback [baskervaldmath] [file:BaskervaldADFStd] [0x41-0x5A] [force=yes]
    % 0x61-0x7A = upright roman a-z within both Pagella Math and Baskervald
    \definefontfallback [baskervaldmath] [file:BaskervaldADFStd] [0x61-0x7A] [force=yes]
    % 0x1D434-0x1D44D = italic roman A-Z
    \definefontfallback [baskervaldmath] [file:BaskervaldADFStd-Italic] [0x41-0x5A] [offset=0x1D434-0x1D44D, force=yes]
    % 0x1D44E-0x1D467 = italic roman a-z
    \definefontfallback [baskervaldmath] [file:BaskervaldADFStd-Italic] [0x61-0x7A] [offset=0x1D44E-0x1D467, force=yes]
    % 0x1D400-0x1D419 = upright bold roman A-Z
    \definefontfallback [baskervaldmath] [file:BaskervaldADFStd-Bold] [0x41-0x5A] [offset=0x1D400-0x1D419, force=yes]
    % etc.
    % Type script
    \starttypescript [serif] [liberty]
        \definefontsynonym [Serif] [file:BaskervaldADFStd]
        \definefontsynonym [SerifCaps] [Serif] [features=smallcaps]
        \definefontsynonym [SerifItalic] [file:BaskervaldADFStd-Italic]
        \definefontsynonym [SerifSlanted] [SerifItalic]
        \definefontsynonym [SerifBold] [file:BaskervaldADFStd-Bold]
        \definefontsynonym [SerifBoldItalic] [file:BaskervaldADFStd-BoldItalic]
        \definefontsynonym [SerifBoldSlanted] [SerifBoldItalic]
    \stoptypescript
    \starttypescript [sans] [liberty]
        \definefontsynonym [Sans] [file:corbel]
        \definefontsynonym [SansCaps] [Sans] [features=smallcaps]
        \definefontsynonym [SansItalic] [file:corbeli]
        \definefontsynonym [SansSlanted] [SansItalic]
        \definefontsynonym [SansBold] [file:corbelb]
        \definefontsynonym [SansBoldItalic] [file:corbelz]
        \definefontsynonym [SansBoldSlanted] [SansBoldItalic]
    \stoptypescript
    \starttypescript [mono] [liberty]
        \definefontsynonym [Mono] [file:UbuntuMono-R]
        \definefontsynonym [MonoCaps] [Mono] [features=smallcaps]
        \definefontsynonym [MonoItalic] [file:UbuntuMono-RI]
        \definefontsynonym [MonoSlanted] [MonoItalic]
        \definefontsynonym [MonoBold] [file:UbuntuMono-B]
        \definefontsynonym [MonoBoldItalic] [file:UbuntuMono-BI]
        \definefontsynonym [MonoBoldSlanted] [MonoBoldItalic]
    \stoptypescript
    \starttypescript [math] [liberty]
        \definefontsynonym [MathRoman] [file:texgyrepagella-math] [fallbacks=baskervaldmath]
    \stoptypescript
    \definetypeface [liberty] [rm] [serif] [liberty] [default] [features=default]
    \definetypeface [liberty] [ss] [sans] [liberty] [default] [features=default, rscale=0.95]
    \definetypeface [liberty] [tt] [mono] [liberty] [default] [features=default, rscale=0.88]
    \definetypeface [liberty] [mm] [math] [liberty] [default] [features=default]
    \setupbodyfont [liberty, 12pt]
\stopenvironment

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