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%D \module
%D [ file=spec-xtx,
%D version=2004.11.08,
%D title=\CONTEXT\ Special Macros,
%D subtitle=\XETEX\ support,
%D author={Adam Lindsay \& Hans Hagen \& \unknown},
%D date=\currentdate,
%D copyright={Adam Lindsay \& Hans Hagen}]
\unprotect
\startspecials[xetex][reset,dpx]
%D Actually, there's an intermediate ``\type{xdv}''
%D output format, but by default, it's tranparently
%D converted to \PDF\ by \XETEX.
\setjobsuffix{pdf}
%D Rotation looks fine.
\definespecial\dostartrotation#1%
{\special{x:gsave}\special{x:rotate #1}}
\definespecial\dostoprotation
{\special{x:grestore}}
%D Scaling and mirroring are also fine.
\definespecial\dostartscaling#1#2%
{\special{x:gsave}\special{x:scale #1 #2}}
\definespecial\dostopscaling
{\special{x:grestore}}
\definespecial\dostartmirroring
{\special{x:gsave}\special{x:scale -1 1}}
\definespecial\dostopmirroring
{\special{x:grestore}}
%D Colors are done with the \DVIPDFMX\ color model, which are
%D inherited.
%D Although hex colors were accommodated by Hans, we'll try the
%D more familiar \DVIPDFMX\ ones. One good side-effect of the
%D previous approach was that it kept track of the color state
%D (transparency in XeTeX is accomplished setting the color to
%D an RGBA quadruple, rather than an RGB triple). So transparency
%D will need another plan.
% \macros
% {dostarttransparency,dostoptransparency}
%
% \starttypen
% \dostarttransparency{fraction}{type}
% \dostoptransparency
% \stoptypen
%
% Although in \CONTEXT\ transparency is closely integrated
% in the color drivers, in the end it is an independent
% feature.
%\installspecial [\dostarttransparency] [or] [2]
%\installspecial [\dostoptransparency] [or] [0]
%D \macros
%D {doloadmapfile,doloadmapline,doresetmapfilelist}
%D
%D \XETEX\ 0.91 allows map file additions, via a special.
\definespecial\doresetmapfilelist{\special{x:fontmapfile original-empty.map}}
\definespecial\doloadmapfile #1#2{\special{x:fontmapfile #1#2}}
\definespecial\doloadmapline #1#2{\special{x:fontmapline #1#2}}
%D \XETEX\ supports \type{\doPDFdestination} and
%D \type{\doPDFbookmark} inherited straight from \DVIPDFMX.
\definespecial\doinsertfile#1#2#3#4#5#6#7#8#9%
{\bgroup
\dodoinsertfile{xtx}{#1}{#2}{#3}{#4}{#5}{#6}{#7}{#8}{#9}%
\egroup}
\definefileinsertion{xtx}{jpg}{\xtxhandleotherimage}
\definefileinsertion{xtx}{png}{\xtxhandleotherimage}
\definefileinsertion{xtx}{gif}{\xtxhandleotherimage}
\definefileinsertion{xtx}{tif}{\xtxhandleotherimage}
\definefileinsertion{xtx}{pdf}{\xtxhandlepdfimage }
\def\xtxhandleotherimage#1#2#3#4#5#6#7#8#9%
{\bgroup % not needed, we load this under a normal catcode regime; \catcode`\"=11
\XeTeXpicfile "#1" width #7 height #8\relax%
\donetrue
\egroup}
\def\xtxhandlepdfimage#1#2#3#4#5#6#7#8#9%
{\bgroup % not needed, we load this under a normal catcode regime; \catcode`\"=11
\checkpdfimagepagenumber{#9}
\XeTeXpdffile "#1" \pdfimagepagenumber\space width #7 height #8 \relax%
\donetrue
\egroup}
\def\checkpdfimagepagenumber#1%
{\let\pdfimagepagenumber\empty
\getfromcommacommand[#1][1]%
\doifnumberelse\commalistelement
{\ifcase\commalistelement\else
\edef\pdfimagepagenumber{page \commalistelement}%
%\message{(pdf image \pdfimagepagenumber)}%
\fi}
{}}
% \type{\getfiguredimensionsA} calls this one.
% \type{\executedtrue} means it was able to get the desired
% dogetfiguresizeBLAH method for the image type.
% \type{\donetrue} means that the image was successfully
% measured to be more than zero points.
\def\dogetXTXfiguresize#1#2#3#4#5#6#7%
{#4\zeropoint
#5\zeropoint
\setbox\foundexternalfigure\vbox{\XeTeXpicfile "#2"}%
#6\wd\foundexternalfigure
#7\ht\foundexternalfigure
\ifdim\wd\foundexternalfigure=\zeropoint % \ifzeropt\wd\foundexternalfigure
#1{#2}{#3}{#4}{#5}{#6}{#7}%
\fi}
\def\dogetXTXpdfsize#1#2#3#4#5#6#7%
{#4\zeropoint
#5\zeropoint
\checkpdfimagepagenumber{#3}
\setbox\foundexternalfigure\vbox{\XeTeXpdffile "#2" \pdfimagepagenumber}% \relax not needed
#6\wd\foundexternalfigure
#7\ht\foundexternalfigure
\ifdim\wd\foundexternalfigure=\zeropoint % \ifzeropt\wd\foundexternalfigure
#1{#2}{#3}{#4}{#5}{#6}{#7}%
\fi}
\let\normaldogetfiguresizepng=\dogetfiguresizepng
\let\normaldogetfiguresizetif=\dogetfiguresizetif
\let\normaldogetfiguresizejpg=\dogetfiguresizejpg
\let\normaldogetfiguresizegif=\dogetfiguresizegif
\let\normaldogetfiguresizepdf=\dogetfiguresizepdf
\def\dogetfiguresizepng{\dogetXTXfiguresize\normaldogetfiguresizepng}
\def\dogetfiguresizejpg{\dogetXTXfiguresize\normaldogetfiguresizejpg}
\def\dogetfiguresizegif{\dogetXTXfiguresize\normaldogetfiguresizegif}
\def\dogetfiguresizetif{\dogetXTXfiguresize\normaldogetfiguresizetif}
\def\dogetfiguresizepdf{\dogetXTXpdfsize\normaldogetfiguresizepdf}
\appendtoksonce
\let\dogetfiguresizepng\normaldogetfiguresizepng
\let\dogetfiguresizetif\normaldogetfiguresizetif
\let\dogetfiguresizejpg\normaldogetfiguresizejpg
\let\dogetfiguresizegif\normaldogetfiguresizegif
\let\dogetfiguresizepdf\normaldogetfiguresizepdf
\to \everyresetspecials
%D The figure object system caused no end of headaches. They all
%D went away with this single line:
\setupexternalfigures[\c!object=\v!no]
\stopspecials
\protect \endinput
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