From 85b7bc695629926641c7cb752fd478adfdf374f3 Mon Sep 17 00:00:00 2001 From: Marius Date: Sun, 4 Jul 2010 15:32:09 +0300 Subject: stable 2010-05-24 13:10 --- tex/context/base/spac-pag.mkiv | 199 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 199 insertions(+) create mode 100644 tex/context/base/spac-pag.mkiv (limited to 'tex/context/base/spac-pag.mkiv') diff --git a/tex/context/base/spac-pag.mkiv b/tex/context/base/spac-pag.mkiv new file mode 100644 index 000000000..353afa536 --- /dev/null +++ b/tex/context/base/spac-pag.mkiv @@ -0,0 +1,199 @@ +%D \module +%D [ file=spac-pag, +%D version=2009.10.16, % 1997.03.31, was core-spa.tex +%D title=\CONTEXT\ Spacing Macros, +%D subtitle=Pages, +%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 Spacing Macros / Pages} + +\unprotect + +%D A quick way to determine left|/|middle|/|right states +%D (experimental). + +\setvalue{\??as\v!left }{0} +\setvalue{\??as\v!middle}{1} +\setvalue{\??as\v!right }{2} + +\def\setalignmentswitch#1% + {\chardef\alignmentswitch0\csname\??as#1\endcsname\relax} + +\newcount \noftrackedpagestates +\newif \ifpagestatemismatch +\newcount \realpagestateno +\chardef \frozenpagestate \zerocount + +\def\dotrackpagestate#1#2% + {\ifdoublesided \ifinpagebody \else + \doforcedtrackpagestate{#1}{#2}% + \fi \fi} + +\def\doforcedtrackpagestate#1#2% + {\ifcase\frozenpagestate + \global\advance\noftrackedpagestates\plusone + \global\advance#2\plusone + \lazysavetaggedtwopassdata{#1}{\number\noftrackedpagestates}{\number#2}{\noexpand\realfolio}% + %\llap{\infofont\number\noftrackedpagestates/\number#2}% tracing + \fi} + +\def\doifrightpagestateelse#1#2% + {\ifcase\frozenpagestate + \pagestatemismatchfalse + \realpagestateno\realfolio + \ifinpagebody + \ifdoublesided + \ifodd\realpageno\relax + \twopassdatafoundtrue \else \twopassdatafoundfalse + \fi + \else + \twopassdatafoundtrue + \fi + \else\ifdoublesided + \findtwopassdata{#1}{\number#2}% + \iftwopassdatafound + \realpagestateno\twopassdata\relax + \ifnum\twopassdata=\realpageno \else + \pagestatemismatchtrue + \fi + \ifodd\twopassdata\relax + \twopassdatafoundtrue \else \twopassdatafoundfalse + \fi + \else + \ifodd\realpageno\relax + \twopassdatafoundtrue \else \twopassdatafoundfalse + \fi + \fi + \else + \twopassdatafoundtrue + \fi\fi + \else + \ifodd\realpagestateno\relax + \twopassdatafoundtrue \else \twopassdatafoundfalse + \fi + \fi + \iftwopassdatafound + \@EA\firstoftwoarguments + \else + \@EA\secondoftwoarguments + \fi} + +\def\doifforcedrightpagestateelse#1#2% + {\ifcase\frozenpagestate + \pagestatemismatchfalse + \realpagestateno\realfolio + \findtwopassdata{#1}{\number#2}% + \iftwopassdatafound + \realpagestateno\twopassdata\relax + \ifnum\twopassdata=\realpageno \else + \pagestatemismatchtrue + \fi + \ifodd\twopassdata\relax + \twopassdatafoundtrue \else \twopassdatafoundfalse + \fi + \else + \ifodd\realpageno\relax + \twopassdatafoundtrue \else \twopassdatafoundfalse + \fi + \fi + \else + \ifodd\realpagestateno\relax + \twopassdatafoundtrue \else \twopassdatafoundfalse + \fi + \fi + \iftwopassdatafound + \@EA\firstoftwoarguments + \else + \@EA\secondoftwoarguments + \fi} + +\def\freezepagestate {\chardef\frozenpagestate\plusone } +\def\defrostpagestate{\chardef\frozenpagestate\zerocount} + +% we can make more of these on top, but how to deal with mixed frozen states + +\definetwopasslist\s!paragraph \newcount \nofraggedparagraphs + +\def\signalrightpage {\dotrackpagestate \s!paragraph\nofraggedparagraphs} +\def\doifrightpageelse{\doifrightpagestateelse\s!paragraph\nofraggedparagraphs} + +\newcount\pagesignallevel + +\unexpanded\def\startsignalrightpage % one may do a \postsignalrightplace + {\advance\pagesignallevel\plusone + \presignalrightpage + \let\signalrightpage\relax + \let\presignalrightpage\relax + \let\startsignalrightpage\relax + \doifrightpageelse\donothing\donothing + \freezepagestate} + +\unexpanded\def\stopsignalrightpage + {\ifcase\pagesignallevel\or\postsignalrightpage\fi + \advance\pagesignallevel\minusone} + +\def\setraggedparagraphmode + {\signalrightpage\doifrightpageelse} % move it there + +\ifx\swapmargins\undefined \let\swapmargins\undefined \fi % todo + +\def\doifswappedrightpageelse#1#2% alleen in box construction ! + {\doifrightpageelse + {#1} + {\scratchcounter\realpageno + \realpageno\realpagestateno\relax + \swapmargins + \realpageno\scratchcounter + #2}} + +\newbox\signaledrightpage % this way we can avoid interference, i.e. postpone placement + +\def\presignalrightpage {\global\setbox\signaledrightpage\hbox{\signalrightpage}} +\def\postsignalrightpage{\ifvoid\signaledrightpage\else\box\signaledrightpage\fi} + +% The next feature is is used in: +% +% \definenumber[test][way=bypage] +% +% \def\Test +% {\incrementnumber[test]\rawnumber[test]/% +% \incrementnumber[test]\rawnumber[test]/% +% \incrementnumber[test]\rawnumber[test]\space +% \checkpagechange{oeps}\changedpage{oeps}\space +% \ifpagechanged TRUE\else FALSE\fi} +% +% \Test\page \Test\par \Test\page \Test\par \Test\page \Test\page +% +% (adapted from cont-new.tex:) + +\newif\ifpagechanged \let\lastchangedpage\empty + +\def\docheckpagestatechange#1#2#3% + {\pagechangedfalse + \doforcedtrackpagestate{#2}{#3}% + \findtwopassdata{#2}{\number#3}% + \iftwopassdatafound + \ifnum\twopassdata>0\getvalue{#2:p:#1}\relax + \pagechangedtrue + \fi + \fi + \ifpagechanged + \letgvalue{#2:p:#1}\twopassdata + \globallet\lastchangedpage\twopassdata + \else + \globallet\lastchangedpage\realfolio + \fi} + +\def\changedpagestate#1#2% + {\executeifdefined{#2:p:#1}{0}} + +\def\checkpagechange#1{\docheckpagestatechange{#1}\s!paragraph\nofraggedparagraphs} +\def\changedpage #1{\changedpagestate{#1}\s!paragraph} + +\protect \endinput -- cgit v1.2.3