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%D \module
%D [ file=spec-tr,
%D version=1996.01.25,
%D title=\CONTEXT\ Special Macros,
%D subtitle=Thomas Rokicky's \DVIPS,
%D author=Hans 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. Non||commercial use is
%C granted.
%D Especially the rotation proved to be incompatible with
%D the default \POSTSCRIPT\ special driver. Many thanks to
%D Gilbert van den Dobbelsteen for testing and hacking the
%D \DVIPS\ source and pinpointing the problem.
%D \macros
%D {doinsertfile}
%D
%D We overrule the figure||insertion special. Things should
%D be more accurate, but maybe someday \onbekend
\startspecials[rokicky] % [postscript]
\def\@@insertpostscriptliteral {ps: }
\def\@@insertpostscriptretain {" }
\def\dotrinserteps#1#2#3#4#5#6#7#8%
{\ScaledPointsToBigPoints{#4}\width
\ScaledPointsToBigPoints{#5}\height
\special
{psfile=#1
hscale=#2\space
vscale=#3\space
hoffset=\width \space
voffset=\height}}
\definespecial\doinsertfile#1#2#3#4#5#6#7#8#9%
{\bgroup
\dodoinsertfile{tr}{#1}{#2}{#3}{#4}{#5}{#6}{#7}{#8}{#9}%
\egroup}
%D \macros
%D {dostartrotation}
%D
%D Because \DVIPS\ uses a reverse rotation scheme, we have
%D to add an extra \type{neg} to the default \POSTSCRIPT\
%D rotation definition:
\definespecial\dostartrotation#1% straight from the YandY manual / 1st neg added
{\special
{\@@insertpostscriptliteral
gsave currentpoint currentpoint translate
#1 neg rotate neg exch neg exch translate}}
\definespecial\dostoprotation%
{\special
{\@@insertpostscriptliteral
currentfont currentpoint grestore moveto setfont}}
%D Drawing ovals in \DVIPS\ is complicated by the fact that
%D the colors get reset. Therefore we need a more literal
%D approach and therefore scale to local units. By redefining
%D the retain constant into a macro, we can use the already
%D present \POSTSCRIPT\ definition (see \type{spec-ps}).
\definespecial\doovalbox#1#2#3#4#5#6#7%
{\bgroup
\edef\@@insertpostscriptretain gsave%
{\@@insertpostscriptliteral
gsave
Resolution 72 div
VResolution 72 div neg scale currentpoint translate}%
\dosomeovalbox{#1}{#2}{#3}{#4}{#5}{#6}{#7}%
\egroup}
\stopspecials
\endinput
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