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Diffstat (limited to 'tex/context/base/meta-tex.mkii')
| -rw-r--r-- | tex/context/base/meta-tex.mkii | 350 |
1 files changed, 350 insertions, 0 deletions
diff --git a/tex/context/base/meta-tex.mkii b/tex/context/base/meta-tex.mkii new file mode 100644 index 000000000..190a694d9 --- /dev/null +++ b/tex/context/base/meta-tex.mkii @@ -0,0 +1,350 @@ +%D \module +%D [ file=meta-tex, +%D version=2006.06.07, +%D title=\CONTEXT\ Support Macros, +%D subtitle=\METAPOST\ fast text insertion, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright=\PRAGMA] +%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 Many thanks to Fabrice Popineau and Taco Hoekwater in helping me +%D figure out some aspects of the text inclusion method implemented +%D here. The following code is derived from a more advanced (and to +%D be used) mechanism where \TEX, \METAPOST\ and \LUA\ play together. + +%D Much of this mechanism was written with running live DVD's of +%D the Dave Matthews band in the background (or the corner of my +%D screen). + +% todo: testmacro for empty pic + +\unprotect + +\newwrite\TeXtextwrite + +\def\openTeXtexts {\immediate\openout \TeXtextwrite\currentTeXtext.mpb\relax} +\def\closeTeXtexts{\immediate\closeout\TeXtextwrite} + +\def\currentTeXtext {\jobname-mpgraph} +\def\currentTeXstack{mpgtxt} + +\initializeboxstack\currentTeXstack + +\newtoks\collectedmptexts +\newtoks\everyTeXtexts + +\chardef\TeXtextsmode\zerocount % no inheritance + +\long\def\startTeXtexts#1\stopTeXtexts + {\global\collectedmptexts\expandafter{\the\collectedmptexts#1}} + +\def\dostartTeXtexts + {\global\setfalse\TeXtextdone + \startnointerference + \openTeXtexts + \ifcase\TeXtextsmode + % normally there is no need for this (faster anyway) + \or + \scantokens\expandafter{\the\everyMPTEXgraphic}% brr + \or + \the\everyTeXtexts + \fi + \ifrunMPgraphics + \initializeboxstack\currentTeXstack + \else + \global\let\openTeXtexts\relax + \global\let\finishTeXtexts\closeTeXtexts + \fi} + +\def\dostopTeXtexts + {\ifrunMPgraphics + \closeTeXtexts + \fi + \stopnointerference} + +\let\finishTeXtexts\relax + +\appendtoks + \finishTeXtexts +\to \everystoptext + +\newconditional\TeXtextdone + +% \long\def\TeXtext#1% +% {\dowithnextboxcontent +% {\setnormalcatcodes} +% {\global\settrue\TeXtextdone +% \immediate\write\TeXtextwrite{savetxt(#1,\the\wd\nextbox,\the\ht\nextbox,\the\dp\nextbox);}% +% \savebox\currentTeXstack{#1}{\box\nextbox}} +% \hbox} + +\long\def\TeXtext + {\dosingleempty\doTeXtext} + +% currently, colors in the converter don't use the color stack +% +% 0 = nothing, withcolor works ok, but nested colors fail +% 1 = local color stack ok +% 2 = obey color stack (not yet supported) + +\chardef\TeXtextcolormode\plusone + +\def\definetextext[#1]#2{\setvalue{textext@@#1}{#2}} + +% \definetextext[framed]{\framed} +% +% \startMPcode +% draw \sometxt[framed]{black} rotated 45 ; +% \stopMPcode + +\long\def\doTeXtext[#1]#2#3% + {\begingroup + \setnormalcatcodes + \chardef\activecharactermode\plusone % compensates ** in meta-ini.mkii + \endlinechar\minusone + \everyeof\emptytoks + %\def\ascii{#3}\scantokens\expandafter{\ascii}}% + \setbox\nextbox\hbox + {\ifcase\TeXtextcolormode + \scantokens{\executeifdefined{textext@@#1}\firstofoneargument{#3}}% + \else + \localcolortrue + \startcurrentcolor + \scantokens{\executeifdefined{textext@@#1}\firstofoneargument{#3}}% + \stopcurrentcolor + \fi}% + \global\settrue\TeXtextdone + \edef\currenttextxt{\number#2}% + \executeifdefined{textext::#1}{\getvalue{textext::depth}}% + \savebox\currentTeXstack\currenttextxt{\box\nextbox}% + \endgroup} + +\setvalue{textext::depth}{\immediate\write\TeXtextwrite{savetxt(\currenttextxt,\the\nextboxwd,\the\nextboxht,\the\nextboxdp) shifted (0,-\the\nextboxdp);}} +\setvalue{textext::nodepth}{\immediate\write\TeXtextwrite{savetxt(\currenttextxt,\the\nextboxwd,\the\nextboxht,\the\nextboxdp);}} + +\setvalue{textext::d}{\getvalue{textext::depth}} +\setvalue{textext::n}{\getvalue{textext::nodepth}} + +\newbox\mptextbox + +% \loadmapfile[lm-texnansi.map] % the font is not really used, i.e. nothing ends up in the file +\definefontsynonym[MPtxtfont][texnansi-lmtt10] +\definefont[localMPtxtfont][MPtxtfont at 10bp] + +\ifx\getTeXtext\undefined + + % this took a while to figure out + + \let\MPtextdata\empty + + \def\getTeXtext + {\ifx\MPtextdata\empty\else + \localMPtxtfont + \setbox\mptextbox\hbox{\foundbox\currentTeXstack{\number\nofTeXtexts}}% + \setbox\scratchbox\hbox{\MPtextdata}% set in meta-pdf.mkii/mkiv + \edef\mpwd{\the\dimexpr\MPtextsize\dimexpr\wd\scratchbox/10\relax\relax}% + \edef\mpht{\the\dimexpr\MPtextsize\dimexpr\ht\scratchbox/10\relax\relax}% + \setbox\mptextbox\hbox{\raise\dp\mptextbox\box\mptextbox}% + \dp\mptextbox\zeropoint + \scale[\c!width=\mpwd,\c!height=\mpht]{\box\mptextbox}% + \fi} + +\fi + +\let\nofTeXtexts\!!zerocount + +\setvalue{handleMPtext00001}% only height in tag (00001) + {\setbox\scratchbox\hbox + {\obeyMPspecials + \edef\nofTeXtexts{\number\MPtextnumber}% + \getTeXtext}% + \setbox\scratchbox\hbox + {\hskip\lastMPmoveX\onebasepoint\raise\lastMPmoveY\onebasepoint + \box\scratchbox}% + \ht\scratchbox\zeropoint + \dp\scratchbox\zeropoint + \wd\scratchbox\zeropoint + \box\scratchbox} + +\startMPextensions + string txtfile ; txtfile := "\currentTeXtext.mpb" ; + string txtfont ; txtfont := "\truefontname{MPtxtfont}" ; + string txtpref ; txtpref := "00001::::" ; +\stopMPextensions + +\newcount\metatxtcounter + +\long\def\dodofiltersometxt#1#2#3% + {\ifx#2\empty + \else + \advance\metatxtcounter\plusone + \TeXtext{\the\metatxtcounter}{#1}% + \expandafter\filtersometxt + \fi#2#3} + +\long\def\redofiltersometxt[#1]#2% + {\advance\metatxtcounter\plusone + \TeXtext[#1]{\the\metatxtcounter}{#2}% + \filtersometxt} + +\long\def\filtersometxt#1\sometxt + {\doifnextoptionalelse\redofiltersometxt\dodofiltersometxt} + +% cleaner in mkiv +% +% \filtersometxt abc\sometxt{def};hij\sometxt{klm};\sometxt{}\empty\relax + +\long\def\flushTeXtexts#1% + {\metatxtcounter\zerocount + \dostartTeXtexts + \the\collectedmptexts + \filtersometxt#1\sometxt{}\empty\relax + \dostopTeXtexts + \ifconditional\TeXtextdone + \immediate\write\MPwrite{loadtxts ; txtnext := 0 ;}% + \global\collectedmptexts\emptytoks + \fi + \metatxtcounter\zerocount} + +% \long\def\sometxt#1{sometxt(nexttxt)} % to be used in mp definitions, no ; here + +\long\def\sometxt #1#{\dosometxt} % grab optional [args] +\long\def\dosometxt#1{sometxt(nexttxt)} % to be used in mp definitions, no ; here + +% we redefine the writer: + +\long\def\writecheckedMPgraphic#1% + {\ifforceMPTEXgraphic + \global\MPTEXgraphictrue + \else + \global\MPTEXgraphicfalse + \edef\ascii{#1}\defconvertedcommand\MPascii\ascii + \the\MPTEXgraphicchecks\relax % \relax is end condition! + \fi + \flushMPTEXgraphic% % verbatimtex etc + \flushTeXtexts{#1}% added + \writeMPgraphic{#1}} % potential optimization: pass \ascii + +\protect \endinput + +% torture test (will move) + +\startMPpage + numeric a_b_c ; + picture p ; pickup pencircle scaled .1pt ; + p := \sometxt{Just a \color[blue]{simple} example text.} ; + p := image(draw p; draw boundingbox p withcolor red; ) ; + p := p rotatedaround(center p, 360*(5/100)) ; + draw p ; draw boundingbox p withcolor blue ; + currentpicture := currentpicture scaled 20 ; + draw boundingbox currentpicture withcolor .5white ; + setbounds currentpicture to boundingbox currentpicture enlarged 10pt ; +\stopMPpage + +\startMPpage + picture p ; + p := \sometxt{\framed[width=fit,align=middle]{\input tufte\relax}} ; + draw p rotatedaround(center p, 30) ; +\stopMPpage + +\startMPpage + picture p ; + p := \sometxt{\framed[width=fit,align=middle]{\input tufte\relax}} ; + draw p slanted .5 ; +\stopMPpage + +\dorecurse{10} { + \startTeXtexts + \TeXtext{\recurselevel}{\ruledhbox{I must be {\green crazy} to implement this}} + \stopTeXtexts + \startMPpage + picture p ; pickup pencircle scaled .1pt ; + numeric i ; i := \recurselevel ; + p := sometxt(i) ; + p := p rotatedaround(center p, 360*(i*5/100)) ; + draw p ; draw boundingbox p withcolor blue ; + currentpicture := currentpicture scaled 20 ; + draw boundingbox currentpicture withcolor .5white ; + \stopMPpage +} + +\startTeXtexts + \dorecurse{100}{\TeXtext{\recurselevel}{\ruledhbox{\strut interesting \recurselevel}}} +\stopTeXtexts + +\startMPpage + picture p ; pickup pencircle scaled .1pt ; + for i = 1 upto 100: + p := sometxt(i) ; + p := p rotatedaround(center p, 360*(i*5/100)) ; + draw p ; draw boundingbox p withcolor blue ; + endfor ; + currentpicture := currentpicture scaled 20 ; + draw boundingbox currentpicture withcolor .5white ; +\stopMPpage + +\startTeXtexts + \dorecurse{100}{\TeXtext{\recurselevel}{\ruledhbox{\strut interesting \recurselevel}}} +\stopTeXtexts + +\startMPpage + picture p ; pickup pencircle scaled .1pt ; + for i = 1 step 5 until 100 : + p := sometxt(i) ; + p := p rotatedaround(center p, 360*(i/100)) ; + draw p ; draw boundingbox p withcolor blue ; + endfor ; + currentpicture := currentpicture scaled 20 ; + draw boundingbox currentpicture withcolor .5white ; +\stopMPpage + +\startTeXtexts + \dorecurse{20}{\TeXtext{\recurselevel}{\externalfigure[t:/sources/cow.pdf][width=1cm]}} +\stopTeXtexts + +\startMPpage + picture p ; pickup pencircle scaled .1pt ; + for i = 1 upto 20 : + p := sometxt(i) ; + p := p shifted (2.5cm,0) rotated (360*(i/20)) ; + draw p ; draw boundingbox p withcolor blue ; + endfor ; + currentpicture := currentpicture scaled 10 ; + draw boundingbox currentpicture withcolor .5white ; +\stopMPpage + +\startTeXtexts + \dorecurse{200}{\TeXtext{\recurselevel}{\ruledhbox{\strut I must be {\green crazy} \recurselevel}}} +\stopTeXtexts + +\startMPpage + picture p ; pickup pencircle scaled .1pt ; + numeric i ; i := 100 ; + p := sometxt(i) ; + p := p rotatedaround(center p, 360*(i*36/100)) ; + draw p ; draw boundingbox p withcolor blue ; + currentpicture := currentpicture scaled 20 ; + draw boundingbox currentpicture withcolor .5white ; +\stopMPpage + +\dorecurse{10}{ + \startTeXtexts + \dorecurse{200}{\TeXtext{\recurselevel}{\ruledhbox{\strut I must be {\green crazy} \recurselevel}}} + \stopTeXtexts + \startMPpage + picture p ; pickup pencircle scaled .1pt ; + j := 10*\recurselevel-9; + k := 10*\recurselevel; + for i = j upto k: + p := sometxt(i) ; + p := p rotatedaround(center p, 360*(i/100)) ; + draw p ; draw boundingbox p withcolor blue ; + endfor ; + currentpicture := currentpicture scaled 20 ; + draw boundingbox currentpicture withcolor red ; + \stopMPpage +} |