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authorPhilipp Gesang <phg42.2a@gmail.com>2014-12-14 12:29:58 +0100
committerPhilipp Gesang <phg42.2a@gmail.com>2014-12-14 12:29:58 +0100
commitc029158f450cd96f71db2f2a4da72a5c946089c0 (patch)
tree1c5d30d6853f6deb57cc9818b8739106a2d5e03f /src/fontloader/misc/fontloader-mplib.tex
parentea148be27d5a79fd11759856e0ab4033f328ce5a (diff)
parentca673f7b14af906606a188fd98978d3501842f63 (diff)
downloadluaotfload-c029158f450cd96f71db2f2a4da72a5c946089c0.tar.gz
Merge pull request #260 from phi-gamma/master
add import helper, new directory layout, revised letterspacing, fontloader gone nuts
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+%D \module
+%D [ file=luatex-mplib,
+%D version=2009.12.01,
+%D title=\LUATEX\ Support Macros,
+%D subtitle=\METAPOST\ to \PDF\ conversion,
+%D author=Taco Hoekwater \& Hans Hagen,
+%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
+
+%D This is the companion to the \LUA\ module \type {supp-mpl.lua}. Further
+%D embedding is up to others. A simple example of usage in plain \TEX\ is:
+%D
+%D \starttyping
+%D \pdfoutput=1
+%D
+%D \input luatex-mplib.tex
+%D
+%D \setmplibformat{plain}
+%D
+%D \mplibcode
+%D beginfig(1);
+%D draw fullcircle
+%D scaled 10cm
+%D withcolor red
+%D withpen pencircle xscaled 4mm yscaled 2mm rotated 30 ;
+%D endfig;
+%D \endmplibcode
+%D
+%D \end
+%D \stoptyping
+
+\def\setmplibformat#1{\def\mplibformat{#1}}
+
+\def\setupmplibcatcodes
+ {\catcode`\{=12 % could be optional .. not really needed
+ \catcode`\}=12 % could be optional .. not really needed
+ \catcode`\#=12
+ \catcode`\^=12
+ \catcode`\~=12
+ \catcode`\_=12
+ \catcode`\%=12
+ \catcode`\&=12
+ \catcode`\$=12 }
+
+\def\mplibcode
+ {\bgroup
+ \setupmplibcatcodes
+ \domplibcode}
+
+\long\def\domplibcode#1\endmplibcode
+ {\egroup
+ \directlua{metapost.process('\mplibformat',[[#1]])}}
+
+%D We default to \type {plain} \METAPOST:
+
+\def\mplibformat{plain}
+
+%D We use a dedicated scratchbox:
+
+\ifx\mplibscratchbox\undefined \newbox\mplibscratchbox \fi
+
+%D Now load the needed \LUA\ code.
+
+\directlua{dofile(kpse.find_file('luatex-mplib.lua'))}
+
+%D The following code takes care of encapsulating the literals:
+
+\def\startMPLIBtoPDF#1#2#3#4%
+ {\hbox\bgroup
+ \xdef\MPllx{#1}\xdef\MPlly{#2}%
+ \xdef\MPurx{#3}\xdef\MPury{#4}%
+ \xdef\MPwidth{\the\dimexpr#3bp-#1bp\relax}%
+ \xdef\MPheight{\the\dimexpr#4bp-#2bp\relax}%
+ \parskip0pt%
+ \leftskip0pt%
+ \parindent0pt%
+ \everypar{}%
+ \setbox\mplibscratchbox\vbox\bgroup
+ \noindent}
+
+\def\stopMPLIBtoPDF
+ {\egroup
+ \setbox\mplibscratchbox\hbox
+ {\hskip-\MPllx bp%
+ \raise-\MPlly bp%
+ \box\mplibscratchbox}%
+ \setbox\mplibscratchbox\vbox to \MPheight
+ {\vfill
+ \hsize\MPwidth
+ \wd\mplibscratchbox0pt%
+ \ht\mplibscratchbox0pt%
+ \dp\mplibscratchbox0pt%
+ \box\mplibscratchbox}%
+ \wd\mplibscratchbox\MPwidth
+ \ht\mplibscratchbox\MPheight
+ \box\mplibscratchbox
+ \egroup}
+
+%D The body of picture, except for text items, is taken care of by:
+
+\ifnum\pdfoutput>0
+ \let\MPLIBtoPDF\pdfliteral
+\else
+ \def\MPLIBtoPDF#1{\special{pdf:literal direct #1}} % not ok yet
+\fi
+
+%D Text items have a special handler:
+
+\def\MPLIBtextext#1#2#3#4#5%
+ {\begingroup
+ \setbox\mplibscratchbox\hbox
+ {\font\temp=#1 at #2bp%
+ \temp
+ #3}%
+ \setbox\mplibscratchbox\hbox
+ {\hskip#4 bp%
+ \raise#5 bp%
+ \box\mplibscratchbox}%
+ \wd\mplibscratchbox0pt%
+ \ht\mplibscratchbox0pt%
+ \dp\mplibscratchbox0pt%
+ \box\mplibscratchbox
+ \endgroup}
+
+\endinput