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%D \module
%D [ file=mlib-pdf,
%D version=2008.03.25,
%D title=\METAPOST\ Integrated Graphics,
%D subtitle=Conversion to PDF,
%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.
\unprotect
\registerctxluafile{mlib-pdf}{1.001}
\def\MPLIBtoPDF#1{\ctxlua{metapost.flushliteral(#1)}}
\def\MPLIBboundingbox#1#2#3#4%
{\xdef\MPllx{#1}%
\xdef\MPlly{#2}%
\xdef\MPurx{#3}%
\xdef\MPury{#4}%
\xdef\MPwidth {\the\dimexpr#3\onebasepoint-#1\onebasepoint\relax}%
\xdef\MPheight{\the\dimexpr#4\onebasepoint-#2\onebasepoint\relax}}
\def\startMPLIBtoPDF#1#2#3#4% watch the transparency reset
{\dostarttagged\t!mpgraphic\empty
\naturalhbox attr \imageattribute 1 \bgroup
\doactivatecolor\s!black\forcecolorhack
\MPLIBboundingbox{#1}{#2}{#3}{#4}%
%\forgetall % done already elsewhere
\setbox\scratchbox\vbox\bgroup
\noindent % this is really needed in order to force tex into proper cm's
\startMPresources}
\def\stopMPLIBtoPDF % watch the transparency reset
{%\dohandleMPresettransparency % not needed
\stopMPresources
\egroup
\setbox\scratchbox\hbox\bgroup
\hskip-\MPllx\onebasepoint
\raise-\MPlly\onebasepoint
\box\scratchbox
\egroup
\setbox\scratchbox\vbox to \MPheight\bgroup
\vfill
\hsize\MPwidth
\smashbox\scratchbox
\box\scratchbox
\egroup
\wd\scratchbox\MPwidth
\ht\scratchbox\MPheight
\dopackageMPgraphic\scratchbox
\egroup
\dostoptagged}
% \def\MPLIBtextext#1#2#3#4#5%
% {\begingroup
% \def\MPtextdata{#3}% delegate the splitter to lua
% \defconvertedcommand\MPtextdata\MPtextdata % no edef
% \splitstring\MPtextdata\at::::\to\MPtexttag\and\MPtextnumber
% \executeifdefined{handleMPtext\MPtexttag}
% {\setbox\scratchbox\hbox
% {\font\temp=#1\space at #2\onebasepoint
% \let\c\char
% \temp
% \MPfshowcommand{#3}}%
% \setbox\scratchbox\hbox
% {\hskip#4\onebasepoint
% \raise#5\onebasepoint
% \box\scratchbox}%
% \smashbox\scratchbox
% \box\scratchbox}%
% \endgroup}
\def\MPLIBtextext#1#2#3#4#5%
{\begingroup
\setbox\scratchbox\hbox
{\font\temp=#1\space at #2\onebasepoint
\let\c\char
\temp
#3}%
\setbox\scratchbox\hbox
{\hskip#4\onebasepoint
\raise#5\onebasepoint
\box\scratchbox}%
\smashbox\scratchbox
\box\scratchbox
\endgroup}
\def\MPLIBflushreset
{\ctxlua{metapost.flushreset()}}
%D Kind of special:
%
% test.mp:
%
% beginfig(1) fill fullcircle scaled 10cm withcolor red ; endfig ;
% beginfig(2) draw fullcircle scaled 5cm withcolor blue ; endfig ;
% beginfig(3) draw textext("just some text") ; endfig ;
%
% standalone pages:
%
% \starttext
% \directMPgraphic{input "test.mp" ;}
% \stoptext
\let\normalstartMPLIBtoPDF\startMPLIBtoPDF
\let\normalstopMPLIBtoPDF \stopMPLIBtoPDF
\def\directstartMPLIBtoPDF{\startTEXpage\normalstartMPLIBtoPDF}
\def\directstopMPLIBtoPDF {\normalstopMPLIBtoPDF\stopTEXpage}
\unexpanded\def\directMPgraphic
{\dodoublegroupempty\dodirectMPgraphic}
\unexpanded\long\def\directMPgraphic#1#2% makes pages (todo: make boxes)
{\beginMPgraphicgroup{#1}%
\let\startMPLIBtoPDF\directstartMPLIBtoPDF
\let\stopMPLIBtoPDF \directstopMPLIBtoPDF
\dostartcurrentMPgraphic
\forgetall
\normalexpanded{\noexpand\ctxlua{metapost.graphic(
"\currentMPgraphicinstance",
"\currentMPgraphicformat",
\!!bs#2;\!!es,
\!!bs\currentMPinitializations;\!!es,
\!!bs\currentMPpreamble;\!!es,
"all"
)}}%
\dostopcurrentMPgraphic
\endMPgraphicgroup}
\protect \endinput
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