%D \module
%D   [       file=cont-log,
%D        version=1995.10.10,
%D          title=\CONTEXT\ Miscellaneous Macros,
%D       subtitle=\TEX\ Logos,
%D         author=J. Hagen,
%D           date=\currentdate,
%D      copyright={PRAGMA / Hans Hagen \& Ton Otten}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for 
%C details. 

\writestatus{loading}{Context TeX Logos}

%D The system that is used to typeset this text is called \TEX,
%D typeset with an lowered~E. From te beginning of \TEX,
%D authors of macro packages adapted this raising and lowering
%D style. In this module we define some of those logos. 
%D Watch the \type{cmr} detection hack. 

\unprotect

\convertargument cmr\to\someCMRfont

\def\doifCMRfontelse#1#2%
  {\doifinstringelse{\someCMRfont}{\fontname\font}
     {\def\next{#1}}
     {\def\next{#2}}%
   \next}

\unexpanded\def\CMRkern
  {\doifCMRfontelse{\kern}{\scratchdimen=}}

\def\TeX
  {T% 
   \kern-.1667em\lower.5ex\hbox{E}%
   \kern-.125emX}

\def\ConTeXt
                  {C%
   \CMRkern-.0333emo%
   \CMRkern-.0333emn%
%  \CMRkern-.1667em\TeX%
   \CMRkern-.0667em\TeX%
   \CMRkern-.0333emt}

\def\PPCHTeX
  {ppch\TeX}

\def\PRAGMA
  {Pragma ADE}

%\def\LaTeX
%  {L%
%   \kern-.30em\raise.3ex\hbox{\txx A}%
%   \kern-.18em\TeX}

\def\LaTeX % requested by erik frambach 
  {{\setbox\scratchbox\hbox{L}%
    \scratchdimen\ht\scratchbox
    \setbox\scratchbox\hbox{\txx A}%
    L\kern-.55\wd\scratchbox
    \raise\scratchdimen\hbox{\lower\ht\scratchbox\copy\scratchbox}%
    \kern-.2\wd\scratchbox\TeX}}

\def\TaBlE
  {T%
   \kern-.27em\lower.5ex\hbox{A}%
   \kern-.18emB%
   \kern-.1em\lower.5ex\hbox{L}%
   \kern-.075emE}

\def\PiCTeX%
  {P%
   \kern-.12em\lower.5ex\hbox{I}%
   \kern-.075em C%
   \kern-.11em\TeX}

\def\AMSswitch#1%
  {$\fam2\ifdim\korpsgrootte>1.1em\scriptstyle\fi#1$}

\def\AmSTeX%
  {\AMSswitch A%
   \kern-.1667em\lower.5ex\hbox{\AMSswitch M}%
   \kern-.125em\AMSswitch S%
   -\TeX}

\def\LamSTeX%
  {L%
   \kern-.4em\raise.3ex\hbox{\AMSswitch A}%
   \kern-.25em\lower.4ex\hbox{\AMSswitch M}%
   \kern-.1em{\AMSswitch S}%
   -\TeX}

\def\AmSLaTeX%
  {\AMSswitch A%
   \kern-.1667em\lower.5ex\hbox{\AMSswitch M}%
   \kern-.125em\AMSswitch S%
   -\LaTeX}

%D The \METAFONT\ and \METAPOST\ logos adapt themselves to the
%D current fontsize, an ugly but usefull hack. 

\unexpanded\def\setMFPfont%
  {\font\logofont=logo%
     \ifnum\fam=\bffam bf\else
     \ifnum\fam=\slfam sl\else
     \ifnum\fam=\itfam sl\else
     \ifnum\fam=\bsfam bf\else
     \ifnum\fam=\bifam bf\else
     \fi\fi\fi\fi\fi
     10 at \currentfontscale\bodyfontsize
   \logofont}

% \definefontsynonym [MetaLogo]            [logo10]
% \definefontsynonym [MetaLogoBold]        [logobf10]
% \definefontsynonym [MetaLogoSlanted]     [logosl10]
% \definefontsynonym [MetaLogoItalic]      [logosl10]
% \definefontsynonym [MetaLogoBoldSlanted] [logobf10]
% \definefontsynonym [MetaLogoBoldtalic]   [logobf10]
%
% \def\setMFPfont{\symbolicfont{MetaLogo}}

\let\logofont\nullfont

\unexpanded\def\setMFPfont% more sensitive for low level changes 
  {\font\logofont=logo% 
     \ifx\fontalternative\c!bf\else
     \ifx\fontalternative\c!sl\else
     \ifx\fontalternative\c!sl\else
     \ifx\fontalternative\c!bs\else
     \ifx\fontalternative\c!bi\else
     \fi\fi\fi\fi\fi
     10 at \currentfontscale\bodyfontsize
   \logofont}

%\unexpanded\def\MetaFont% 
%  {\hbox{\setMFPfont METAFONT}}
%
%\unexpanded\def\MetaPost% 
%  {\hbox{\setMFPfont METAPOST}}

\def\MetaHyphen% there is no hyphenchar in this font 
  {\discretionary{\vrule\!!height.33em\!!depth-.27em\!!width.33em}{}{}}

\unexpanded\def\MetaFont% 
  {{\setMFPfont META\MetaHyphen FONT}}

\unexpanded\def\MetaPost% 
  {{\setMFPfont META\MetaHyphen POST}}

\unexpanded\def\MetaFun% 
  {MetaFun}

%D \macros
%D  {TEX, METAFONT, METAPOST, METAFUN,
%D   PICTEX, TABLE,      
%D   CONTEXT, PPCHTEX, 
%D   AMSTEX, LATEX, LAMSTEX}
%D 
%D We define the funny written ones as well as th eless 
%D error prone upper case names (in \CONTEXT\ we tend to 
%D write all user defined commands, like abbreviations, in 
%D uppercase.) 

\def\METAFONT {\MetaFont}
\def\METAPOST {\MetaPost}
\def\PPCHTEX  {\PPCHTeX}
\def\CONTEXT  {\ConTeXt}
\def\METAFUN  {\MetaFun}

\def\TEX      {\TeX}
\def\LATEX    {\LaTeX}
\def\PICTEX   {\PiCTeX}
\def\TABLE    {\TaBlE}
\def\AMSTEX   {\AmSTeX}
\def\LAMSTEX  {\LamSTeX}

%D And this is how they show up: \TeX, \MetaFont, \MetaPost,
%D \PiCTeX, \TaBlE, \ConTeXt, \PPCHTeX, \AmSTeX, \LaTeX,
%D \LamSTeX. We also define some logos for the programs that
%D we wrote and use at \PRAGMA: \TeX EDIT, \TeX FORM, \TeX
%D ADRES, \TeX SPELL, \TeX UTIL and \TeX.  

\def\TEXEDIT  {\TeX edit}
\def\TEXFORM  {\TeX form}
\def\TEXADRES {\TeX adres}
\def\TEXSPELL {\TeX spell}
\def\TEXUTIL  {\TeX util}
\def\TEXEXEC  {\TeX exec}

%D Some placeholders: 

\def\eTeX     {\mathematics{\varepsilon}-\TeX}
\def\pdfTeX   {pdf\TeX}
\def\pdfeTeX  {pdfe-\TeX}

\let\ETEX     \eTeX
\let\PDFTEX   \pdfTeX
\let\PDFETEX  \pdfeTeX

\def\XML      {XML}
\def\MATHML   {MathML}

\protect \endinput
