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%D \module
%D [ file=spec-mis,
%D version=1997.04.01,
%D title=\CONTEXT\ Special Macros,
%D subtitle=Miscellaneous Macros,
%D author=Hans Hagen,
%D date=\currentdate,
%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.
%D Quite some modules in this group are dedicated to supporting
%D \PDF\ directly by means of \PDFTEX or indirectly by using
%D Acrobat Distiller. This module implements some common
%D features.
\writestatus{loading}{ConTeXt Special Macros / Miscellaneous Macros}
\unprotect
%D \macros
%D {URLhash}
%D
%D A rather trivial macro:
\expandafter\def\expandafter\URLhash\expandafter{\string#}
%D \macros
%D {ifusepagedestinations}
%D
%D In \PDF\ version 1.0 only page references were supported,
%D while in \DVIWINDO\ 1.N only named references were accepted.
%D Therefore \CONTEXT\ supports both methods of referencing. In
%D \PDF\ version 1.1 named destinations arrived. Lack of
%D continuous support of version 1.1 viewers for \MSDOS\
%D therefore sometimes forces us to prefer page references. As
%D a bonus, they are faster too and have no limitations. How
%D fortunate we were having both mechanisms available when the
%D version 3.0 (\PDF\ version 1.2) viewers proved to be too
%D bugged to support named destinations.
\newif\ifusepagedestinations
%D \macros
%D {ifhighlighthyperlinks}
%D
%D The next switch can be used to make user hyperlinks are
%D not highlighted when clicked on.
\newif\ifhighlighthyperlinks
%D \macros
%D {ifgotonewwindow}
%D
%D To make the {\em goto previous jump} feature more
%D convenient when using more than one file, it makes sense
%D to force the viewer to open a new window for each file
%D opened.
\newif\ifgotonewwindow
%D \macros
%D {ifPDFstrokecolor}
%D
%D We can reduce the filesize a bit by setting the next switch
%D to false. The amount of reduction depends on the use of
%D color, but don't expect more than a few percent. Zip
%D compression is already rather efficient in itself.
\newif\ifPDFstrokecolor \PDFstrokecolortrue
%D \macros
%D {dofileinsertion,definefileinsertion,doiffileinsertionsupported}
%D
%D File insertion depend on the driver or \TEX\ variant used.
%D All driver modules use the same scheme for file insertion,
%D and therefore have the next macro in common (stupified
%D per august 2006):
\let\supportedfileinsertions\empty
\let\supportedfilecheckers \empty
\def\definefileinsertion#1#2#3%
{\addtocommalist{#2}\supportedfileinsertions
\setvalue{do#1insert#2}{#3}}
\def\definefilechecker#1#2#3%
{\addtocommalist{#2}\supportedfilecheckers
\setvalue{do#1check#2}{#3}}
\def\dofileinsertion#1#2{\executeifdefined{do#1insert#2}\donothing}
\def\dofilechecker #1#2{\executeifdefined{do#1check#2} \donothing}
\appendtoks \let\supportedfileinsertions\empty \to \everyresetspecials
\appendtoks \let\supportedfilecheckers \empty \to \everyresetspecials
% \def\doiffileinsertionsupportedelse#1%
% {\expanded{\doifinstringelse{#1}{\c!tex,\c!tmp,\supportedfileinsertions}}}
\def\doiffileinsertionsupportedelse#1% lowercasing happens at tex end
{\expanded{\doifinstringelse{\truegraphictype{#1}}{\c!tex,\c!tmp,\supportedfileinsertions}}}
%D This macro is called with 10 arguments, where the first
%D one specifies the driver, like \type{yy} or \type{tr}. The
%D second argument is a \type{{type,method}} pair and the
%D third the filename.
%D Just in case this one is undefined (which can happen if
%D this module is used outside \CONTEXT):
\ifx\setreferencefilename\undefined
\def\setreferencefilename#1\to#2{\edef#2{#1}}
\fi
%D When submitting forms, we need to communicate the format.
\chardef\submitoutputformat=0 % 0=unknown 1=HTML 2=FDF 3=XML
\def\setsubmitoutputformat#1%
{\doifinsetelse{#1}{FDF,fdf}
{\chardef\submitoutputformat2}
{\doifinsetelse{#1}{XML,xml}
{\chardef\submitoutputformat3}
{\chardef\submitoutputformat1}}%
\relax}
%D \macros
%D {escapePSstring}
%D
%D \starttyping
%D \escapePSstring(t\e\1st)))))\to\crap \crap
%D \stoptyping
% testcase: webschrift met lege regels en unbalanced ()
\bgroup
\catcode`\*=\@@escape
\catcode`\\=\@@letter
*long*gdef*escapedPSstring#1%
{*aftergroup*string
*ifnum`#1=12
*aftergroup*n%
*else*ifnum`#1=13
*aftergroup*n%
*else*if#1(%
*aftergroup*(%
*else*if#1)%
*aftergroup*)%
*else*if#1\%
*aftergroup*\%
*else
*aftergroup#1%
*fi*fi*fi*fi*fi}
*egroup
\long\def\escapePSstring#1\to#2%
{\defconvertedargument#2{#1}%
\bgroup
\ifx#2\empty \else
\setverbosecscharacters
\aftergroup\edef
\aftergroup#2%
\aftergroup{%
\expandafter\handletokens#2\with\escapedPSstring
\aftergroup}%
\fi
\egroup}
% \long\def\preservePSpar#1\to#2%
% {\bgroup
% \def\par{\rawcharacter{12}}%
% \expanded{\egroup\noexpand\def\noexpand#2{#1}}}
\long\def\preservePSpar#1\to#2%
{\bgroup
\def\par{\rawcharacter{12}\rawcharacter{12}}% hm, should be one 13 but 12 ff is platform safe
\expanded{\egroup\noexpand\def\noexpand#2{#1}}}
%D \macros
%D {ifPDFunicode}
%D
%D We can use this switch to signal that content streams has
%D to be unicoded.
\newif\ifPDFunicode
%D \macros
%D {makeMPintoPDFobject, handleMPfshow, setMPPDFobject, getMPPDFobject}
%D
%D \METAPOST\ support.
\ifx\makeMPintoPDFobject\undefined \newcount\makeMPintoPDFobject \fi
\appendtoks
\makeMPintoPDFobject\zerocount
\def\setMPPDFobject#1#2{\def\getMPPDFobject{\box#2}}%
\to \everyresetspecials
\appendtoks
\let\handleMPfshow\dohandleMPfshow
\to \everyresetspecials
%D
%D \macros
%D {dosetposition, dosetpositionwdh, dosetpositionplus}
%D
%D Opposite to its \DVI\ counterpart, the \PDFTEX\ backend
%D can provide positional information directly. Since
%D \CONTEXT\ only uses relative positions, the origin is of
%D less importance. Nowadays \XETEX\ also supports this
%D feature.
\ifx\pdfsavepos\undefined
% only for ancient pdftex, less old xetex and current aleph
\def\dosetposition #1{\special{pos:pxy "#1"}}
\def\dosetpositionwhd #1#2#3#4{\special{pos:pxywhd "#1" #2 #3 #4}}
\def\dosetpositionplus#1#2#3#4#5{\special{pos:pxyplus "#1" #2 #3 #4 #5}}
\let\flushDVIpositionpapersize\relax
\def\dosetpositionpapersize#1#2%
{\xdef\flushDVIpositionpapersize
{\special{pos:papersize \number#1 \number#2}%
\noexpand\installprogram{dvipos -o \jobname.tuo \jobname.dvi }%
\global\noexpand\let\noexpand\flushDVIpositionpapersize\relax}}
% kind of obsolete since nowadays xetex supports \pdfsavepos as well
\ifnum\texengine=\xetexengine
\def\dosetpositionpapersize#1#2%
{\xdef\flushDVIpositionpapersize
{\special{pos:papersize \number#1 \number#2}%
\noexpand\installprogram{dvipos -o \jobname.tuo \jobname.xdv }%
\global\noexpand\let\noexpand\flushDVIpositionpapersize\relax}}
\fi
\prependtoksonce \flushDVIpositionpapersize \to \everyshipout
\else
\def\dosetposition#1%
{\pdfsavepos
\dolazysaveposition
{#1}%
{\noexpand\realfolio}%
{\noexpand\the\dimexpr\pdflastxpos\scaledpoint\relax}%
{\noexpand\the\dimexpr\pdflastypos\scaledpoint\relax}}%
\def\dosetpositionwhd#1#2#3#4%
{\pdfsavepos
\dolazysavepositionwhd
{#1}%
{\noexpand\realfolio}%
{\noexpand\the\dimexpr\pdflastxpos\scaledpoint\relax}%
{\noexpand\the\dimexpr\pdflastypos\scaledpoint\relax}%
{#2}{#3}{#4}}
\def\dosetpositionplus#1#2#3#4#5%
{\pdfsavepos
\dolazysavepositionplus
{#1}%
{\noexpand\realfolio}%
{\noexpand\the\dimexpr\pdflastxpos\scaledpoint\relax}%
{\noexpand\the\dimexpr\pdflastypos\scaledpoint\relax}%
{#2}{#3}{#4}{#5}}
\let\dosetpositionpapersize\gobbletwoarguments
\fi
%D Handy to have this available asap:
\ifdefined\everyPDFxform \newtoks\everyPDFxform \fi
\ifdefined\everyPDFximage \newtoks\everyPDFximage \fi
\protect \endinput
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