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From: Max Chernoff via ntg-context <ntg-context@ntg.nl>
To: Stefan Nedeljkovic <tsar.srb@gmail.com>
Cc: Max Chernoff <mseven@telus.net>,
	mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: Changing font and font size inside textex
Date: Tue, 31 May 2022 01:42:02 -0600	[thread overview]
Message-ID: <043d95df-7e79-80b2-476b-4ae17b0febef@telus.net> (raw)
In-Reply-To: <CAGraPNeExiF11SQCUZ38q=SXT87EJfVmGWAmqSbK8qcAd_VVAA@mail.gmail.com>

> Thanks Max that works perfectly! But It would still be useful if I could 
> change families inside a MPpage.

Sure, but you'll need to store the x-heights first:

     \starttexdefinition storexheight [#1]
         % Placing the first use of \switchtobodyfont inside a group messes
         % with the definitions, so we need to reset the font family manually.
         \edef\oldfontclass{\fontclass}

         \switchtobodyfont[#1]
         \expandafter\newcount\csname #1_xheight\endcsname
         \global\csname #1_xheight\endcsname=\numexpr 100 * \number\dimexpr1em\relax / \number\dimexpr1ex\relax \relax

         \switchtobodyfont[\oldfontclass]
     \stoptexdefinition

     \starttexdefinition setxheight [#1][#2]
         % Combining these two lines into one sometimes fails. No idea why.
         \switchtobodyfont[#1]
         \switchtobodyfont[\the\dimexpr#2 * \csname #1_xheight\endcsname / 100 \relax]
     \stoptexdefinition

     \storexheight[adventor]
     \storexheight[pagella]
     \storexheight[heros]

     \starttext
         \startMPpage
             draw textext.origin("\setxheight[adventor][1cm]Hello!");

             draw (0, 1cm) -- (6cm, 1cm);
         \stopMPpage

         \startMPpage
             draw textext.origin("\setxheight[pagella][1cm]Hello!");

             draw (0, 1cm) -- (6cm, 1cm);
         \stopMPpage

         \startMPpage
             draw textext.origin("\setxheight[heros][6pt]Hello!");
             draw textext.origin("\setxheight[heros][24pt]Hello!");

             draw (0, 6pt) -- (6cm, 6pt);
             draw (0, 24pt) -- (6cm, 24pt);
         \stopMPpage
     \stoptext

It's pretty ugly code, but it seems to work alright.

-- Max

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  reply	other threads:[~2022-05-31  7:42 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-30 18:46 Stefan Nedeljkovic via ntg-context
2022-05-30 23:31 ` Max Chernoff via ntg-context
2022-05-31  5:10   ` Stefan Nedeljkovic via ntg-context
2022-05-31  7:42     ` Max Chernoff via ntg-context [this message]
2022-05-31 13:18       ` Stefan Nedeljkovic via ntg-context

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