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Diffstat (limited to 'Master/texmf-dist/tex/context/base/core-snc.tex')
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diff --git a/Master/texmf-dist/tex/context/base/core-snc.tex b/Master/texmf-dist/tex/context/base/core-snc.tex new file mode 100644 index 00000000000..55c6e15df51 --- /dev/null +++ b/Master/texmf-dist/tex/context/base/core-snc.tex @@ -0,0 +1,176 @@ +%D \module +%D [ file=core-snc, +%D version=2003.12.01, +%D title=\CONTEXT\ Core Macros, +%D subtitle=Synchronization Support, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA / Hans Hagen \& Ton Otten}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See mreadme.pdf for +%C details. + +\writestatus{loading}{Context Synchronization} + +\unprotect + +\ifx\s!set \undefined \def\s!set {set} \fi +\ifx\s!reset \undefined \def\s!reset {reset} \fi +\ifx\s!preset \undefined \def\s!preset {preset} \fi +\ifx\s!syncpos\undefined \def\s!syncpos{syncpos} \fi + +\def\definesyncpositions[#1]% + {\setcounter{\s!num:\s!syncpos:#1}{0}% + \doglobal\appendtoksonce\getvalue {\s!reset:\s!syncpos:#1}\to\resetsyncpositions + \doglobal\appendtoksonce\getvalue{\s!preset:\s!syncpos:#1}\to\presetsyncpositions + \setgvalue{\s!syncpos:#1}{sync_n[#1] := 0 ;}% + \setgvalue{\s!set:\s!syncpos:#1}{\dosetsyncpositions{#1}}} + +\def\syncposition + {\dodoubleempty\dosyncposition} + +\def\dosyncposition[#1][#2]% + {\letgvalue{\s!reset:\s!syncpos:#1}\relax + \letgvalue{\s!preset:\s!syncpos:#1}\relax + \dontleavehmode + \dodosyncposition{#1}{#2}\s!set + \ignorespaces} + +\def\doifelselastsyncposition#1#2% + {\doifelse{\lastsyncclass\lastsyncposition}{#1#2}} + +\def\dodosyncposition#1#2#3% + {\letgvalue{\s!reset:\s!syncpos:#1}\relax + \letgvalue{\s!preset:\s!syncpos:#1}\relax + \ifundefined{\s!syncpos:#1}% + \strut + \else + \pluscounter{\s!num:\s!syncpos:#1}% + \setsyncpositions{#1}% + % option: geen w/h, alleen p 0 0 0 data + \setpositionplus + {\s!syncpos:#1:\countervalue{\s!num:\s!syncpos:#1}}% + {#2}% + \hbox{\strut\traceposstring\llap\green{#3/\countervalue{\s!num:\s!syncpos:#1}/#1/#2>>}}% + \fi} + +\def\setsyncpositions#1% + {\enabletextarearegistration + \getvalue {\s!set:\s!syncpos:#1}% + \letgvalue{\s!set:\s!syncpos:#1}\relax} + +\def\dosetsyncpositions#1% + {\startnointerference % removing out of sync can best be done in mp + \!!dimena\maxdimen + \!!counta\zerocount + \!!countc\zerocount + \doloop + {\doifpositionelse{\s!syncpos:#1:\recurselevel} + {\!!dimenb\MPy{\s!syncpos:#1:\recurselevel}\relax + \!!countb\MPp{\s!syncpos:#1:\recurselevel}\relax + \ifnum\!!countb=\!!counta % same page + \ifdim\!!dimenb>\!!dimena + \donefalse % out of order nodes + \else + \donetrue % nodes in order + \fi + \else + \donetrue % different page + \fi + \ifdone + \!!counta\!!countb + \!!dimena\!!dimenb + \advance\!!countc\plusone + \edef\!!stringa{[#1][\the\!!countc]:=}% + \edef\!!stringc{\s!syncpos:#1:\the\!!countc}% + \edef\!!stringd{\MPplus\!!stringc{1}{0}}% + \setxvalue{\s!syncpos:#1}% + {\getsyncpositions{#1}% + sync_p \!!stringa \MPp \!!stringc ; + sync_xy\!!stringa \MPxy\!!stringc ; + sync_w \!!stringa \MPw \!!stringc ; + sync_h \!!stringa \MPh \!!stringc ; + sync_d \!!stringa \MPd \!!stringc ; + \ifx\!!stringd\empty \else sync_t \!!stringa \MPplus\!!stringc{1}{0} ; \fi}% + \fi} + {\setxvalue{\s!syncpos:#1}% + {\getsyncpositions{#1}% + sync_n[#1] := \the\!!countc ;} + \exitloop}}% + \stopnointerference} + +\def\getsyncpositions#1% + {\getvalue{\s!syncpos:#1}} + +\newtoks\resetsyncpositions +\newtoks\presetsyncpositions + +\def\resyncposition {\dodoubleargument\doresyncposition} +\def\presyncposition{\dodoubleargument\dopresyncposition} + +\def\dodoresyncposition #1#2{\dodosyncposition{#1}{#2}\s!reset} +\def\dodopresyncposition#1#2{\dodosyncposition{#1}{#2}\s!preset} + +\def\doresyncposition [#1][#2]{\setxvalue{\s!reset :\s!syncpos:#1}{\noexpand\dodoresyncposition{#1}{#2}}} +\def\dopresyncposition[#1][#2]{\setxvalue{\s!preset:\s!syncpos:#1}{\noexpand\dodopresyncposition{#1}{#2}}} + +\def\flushsyncpositions % this order ! + {\the\presetsyncpositions + \the\resetsyncpositions} + +% \appendtoks \flushsyncpositions \to \everypar +% \appendtoks \flushsyncpositions \to \everyheadstart + +% \explicitneverypar -> in grid snapper, eerst testen +% +% \appendtoks \flushsyncpositions \to \neverypar + +\def\flushsyncxxsets#1#2% + {\setbox\scratchbox\hbox{\the#1}% + \ifvoid\scratchbox\else + \smashbox\scratchbox + #2\box\scratchbox + \fi} + +\def\flushsyncresets {\flushsyncxxsets\resetsyncpositions \relax} +\def\flushsyncpresets{\flushsyncxxsets\presetsyncpositions\prewordbreak} % check prewordbreak + +\protect \endinput + +\starttext + +\setupcolors[state=start] + +\definesyncpositions[1] + +\startuseMPgraphic{sync} + StartPage ; + \getsyncpositions{1} ; + SyncThreshold := 2LineHeight ; + SyncLeftOffset := -.5LeftMarginDistance ; + % SetSyncThreshold(1,3,3LineHeight) ; + SyncWidth := - (BackSpace + SyncLeftOffset) ; + SetSyncColor(1,1,\MPcolor{red}) ; + SetSyncColor(1,2,\MPcolor{green}) ; + SetSyncColor(1,3,\MPcolor{blue}) ; + SetSyncColor(1,4,\MPcolor{yellow}) ; + PrepareSyncTasks(1,true,true,false) ; + for i = 1 upto NOfSyncPaths : + fill SyncPaths[i] + withcolor TheSyncColor(CurrentSyncClass,sync_t[CurrentSyncClass][SyncTasks[i]]) ; + endfor ; + setbounds currentpicture to Page ; + StopPage ; +\stopuseMPgraphic + +\defineoverlay[tempoverlay][\useMPgraphic{sync}] + +\setupbackgrounds[page][background=tempoverlay] + +\syncposition[1][1] \input ward \endgraf +\syncposition[1][2] \input ward \endgraf +\syncposition[1][3] \input ward \endgraf +\syncposition[1][4] \input ward \endgraf + +\stoptext |