Re: Synchronization (.tex <-> .pdf)

[Hans Hagen <pragma@wxs.nl>]

At 15:38 22/12/2003, Steffen Wolfrum wrote:

>I don't now how many ConTeXt user are aware of the idea of 
>synchronization. In the LaTeX area of TeX it has a kind of tradition 
>(Textures, srcltx, ...) for dvi output.
>
>For PDF output Jérôme Laurens has now written a package (for use with 
>iTeXMac and TeXShop) that makes the advantages from source-output 
>synchronization also available for the todays standard PDF. But as so many 
>things in the TeX world it is written as a "plug-in" for LaTeX.
>
>Does anybody has an idea how to use this great achievement also with ConTeXt?
>For those who would like to have a look at Jérôme's great work, I insert 
>his code at the end of this email.

It's not that complicated to implement this kind of support in context, but 
i'd rather start from the editor's specs, so what is it that texshop wants 
as input (syntax and so)? Once that is known, i can have a look at it and 
see to what extend it can be supported in an non-interfering way. 
(furthermore i'd also support it in dvi mode)

(in one of old context manuals the typeset result is crosslinked to the 
input in a similar way; one reason for me to drop it is that in many cases 
my output is not in sync with the source, i.e. as soon as you move data 
around ...)

Hans


>%%%%  This is pdfsync.sty
>%%%%  2003-12-08:
>%%%%  There is a bug in using everyvbox... novbox is now the default
>%%%%  bug fixed: $0$ was no visible
>%%%%  2003-11-28:
>%%%%  comment characters added to fix an error. Don't know exactly the 
>cause...
>%%%%  Default option is all...
>%%%%  Could not use \everydisplay... (bug in eqnarray)
>%%%%  2003-11-19
>%%%%  first version
>%%%% usage: \usepackage[display,cr,vbox]{PDFSYNC}
>%%%% appends reference points before each \par and at each \hbox, inline math;
>%%%% optionally also at every displayed math, with the option [display]
>%%%% optionally also at every \cr, with the option [cr]
>%%%% optionally also at every \vbox, with the option [vbox]
>%%%%
>%%%% If you want additional files to be parsed, please use the command
>%%%% \include (which is redefined below)
>%%%% This file is due to Piero D'Ancona and jlaurens@users.sourceforge.net
>%%%% iTeXMac is supporting pdfsync
>%%%% Copy this file to ~/Library/texmf/tex/latex or 
>~/Library/TeX/texmf/tex/latex if available
>%%%% This file is distributed under the GPL and the "smart licence": 
>please make things better if you can
>%%%% © 2003, jlaurens@users.sourceforge.net
>%
>\NeedsTeXFormat{LaTeX2e}%
>\ProvidesPackage{pdfsync}[2003/12/08 v0.3]%
>\newif\ifPDFSYNCOK%
>\newif\ifPDFSYNCStar%
>\newif\ifPDFSYNCPar \PDFSYNCPartrue%
>\newif\ifPDFSYNCMath \PDFSYNCMathtrue%
>\newif\ifPDFSYNCCr \PDFSYNCCrtrue%
>\newif\ifPDFSYNCHBox \PDFSYNCHBoxtrue%
>\newif\ifPDFSYNCVBox \PDFSYNCVBoxfalse%
>\newif\ifPDFSYNCExtra \PDFSYNCExtratrue%
>\newwrite\PDFPOS%
>\newcount\PDFSYNC@folio\PDFSYNC@folio=0%
>\newcount\PDFSYNC@rder\PDFSYNC@rder=0%
>\DeclareOption{nopar}{\PDFSYNCParfalse}%
>\DeclareOption{nomath}{\PDFSYNCMathfalse}%
>\DeclareOption{nocr}{\PDFSYNCCrfalse}%
>\DeclareOption{nohbox}{\PDFSYNCHBoxfalse}%
>\DeclareOption{novbox}{\PDFSYNCVBoxfalse}%
>\DeclareOption{vbox}{\PDFSYNCVBoxtrue}%
>\DeclareOption{noextra}{\PDFSYNCExtrafalse}%
>\DeclareOption{nothing}{\let\pdfsyncstart\pdfsyncstop}%
>\ProcessOptions\relax%
>\RequirePackage{everyshi}%
>\ifx\pdfsavepos\undefined%
>   \wlog{Synchronization is only available with pdf. Use a dvi viewer 
> instead.}%
>   \let\pdfsyncstart\relax%
>   \let\pdfsyncstop\relax%
>   \let\pdfsync\relax%
>   \let\@PDFSYNC\relax%
>\else%
>   \def\pdfsyncstart{\global\PDFSYNCOKtrue}%
>   \def\pdfsyncstop{\global\PDFSYNCOKfalse}%
>   \EveryShipout{\@PDFSYNC\global\advance\PDFSYNC@folio by 
> 1\immediate\write\PDFPOS{s\space\the\PDFSYNC@folio}}%
>    \immediate\openout\PDFPOS\jobname.pdfsync%
>     \immediate\write\PDFPOS{\jobname}%            control info
>     \immediate\write\PDFPOS{version 0}%            control info
>     \let\PDFSYNC@include\include%
>     \def\PDFSYNC@@include#1{%
>             \immediate\write\PDFPOS{(#1}%
>             \PDFSYNC@include{#1}\immediate\write\PDFPOS{)}}%
>     \let\include\PDFSYNC@@include%
>     \def\@PDFSYNC{%
>     \ifPDFSYNCOK%
>         \pdfsavepos%
> 
>\immediate\write\PDFPOS{l\space\the\PDFSYNC@rder\space\the\inputlineno}%
>         \def\position{\the\pdflastxpos\space\the\pdflastypos}%
>         \ifPDFSYNCStar%
> 
>\edef\argument{{p*\space\the\PDFSYNC@rder\space\noexpand\position}}%
>         \else%
> 
>\edef\argument{{p\space\the\PDFSYNC@rder\space\noexpand\position}}%
>         \fi%
>         \expandafter\write\expandafter\PDFPOS\argument%
>         \global\advance\PDFSYNC@rder by 1%
>     \fi}%
>  \def\pdfsync{\global\PDFSYNCStartrue\@PDFSYNC\global\PDFSYNCStarfalse}%
>   \def\PDFSYNC@Extra{%
>% 
>\let\PDFSYNC@maketitle\maketitle\def\maketitle{\pdfsyncstop\PDFSYNC@maketitle\pdfsyncstart}
>   \let\PDFSYNC@newline\\\def\\{{\@PDFSYNC}\PDFSYNC@newline}%
>   \global\let\PDFSYNC@verse\verse
> 
>\global\def\verse{\PDFSYNC@verse\let\PDFSYNC@newline\\\def\\{{\@PDFSYNC}\PDFSYNC@newline}}%
>   }%
>\AtBeginDocument{%
>\pdfsyncstart%
>\ifPDFSYNCPar\global\let\p@@r\par\gdef\par{{\@PDFSYNC}\p@@r}\fi%
>\ifPDFSYNCMath\everymath{{\@PDFSYNC}}\fi%
>\ifPDFSYNCCr\everycr {{\@PDFSYNC}}\fi%
>\ifPDFSYNCHBox\everyhbox {{\@PDFSYNC}}\fi%
>\ifPDFSYNCVBox\everyvbox {{\@PDFSYNC}}\fi%there is a bug here
>\ifPDFSYNCExtra\PDFSYNC@Extra\fi%
>}%
>\fi%
>\endinput
>
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