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%%% LaTeX support for TeXplorators / M. Spivak dvipaste program
%%% Copyright 1997 David Carlisle
% This program can redistributed and/or modified under the terms
% of the LaTeX Project Public License Distributed from CTAN
% archives in directory macros/latex/base/lppl.txt; either
% version 1 of the License, or (at your option) any later version.
%%% Usage notes in the file dvipaste.txt
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{grfpaste}
[1997/07/18 v0.2 dvipaste LaTeX graphics style (DPC)]
% 1997/07/17 v0.1
% 1997/07/18 v0.2 add ref system.
% To include previously prepared dvi fragments, use
% \usepackage{grfpaste}
% and include the graphics with \includegraphics{file.dvi}
% or \includegraphics[num=5]{file.dvi}
%
% To make a file that produces suitable fragments, use
% \usepackage[write]{grfpaste}
% and mark each fragment with \sendout{....}
%
\DeclareOption{write}{\let\sendout\relax}
\DeclareOption{writepages}{\let\sendout\relax\let\GP@sendout\@empty}
\DeclareOption{include}{%
\def\sendout#1{\PackageError{grfpaste}{Use write option}{}}}
\DeclareOption{defpaste}{\def\paste#1#2{\includegraphics[num=#2]{#1}}}
\DeclareOption*{\PassOptionsToPackage{\CurrentOption}{graphicx}}
\ExecuteOptions{include}
\ProcessOptions
\RequirePackage{graphicx}
\ifx\sendout\relax
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Marking DVI Sections For Inclusion In Other Files
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Size information will be written in to a file filename.dat
% which is opened now and closed at the end of the run.
\newwrite\writedata@
\immediate\openout\writedata@=\jobname.dat
%\AtEndDocument{\immediate\closeout\writedata@}
% The format of the .dat file is identical to that written by
% dvipaste.tex, the format of the dvi file is compatible.
% dvipaste uses a more complicated scheme that uses a custom output
% routine and then \eject each section, however I can't see why
% \sendout can not just \shipout the box directly, so that is what
% this version does.
\def\sendout{\@testopt\GP@sendout{}}
\ifx\GP@sendout\@empty
\def\GP@sendout[#1]#2{\PackageError{grfpaste}{write pages
only}{}}
\let\GP@shipout\shipout
\def\shipout{\global\setbox\xxx}
\newbox\xxx
\let\GP@outputpage\@outputpage
\def\@outputpage{%
\GP@outputpage
\immediate\write\writedata@
{\the\ht\xxx\space\the\dp\xxx\space\the\wd\xxx}%
{\let\protect\noexpand
\advance\c@page\m@ne
\GP@shipout\hbox{%
\special{beginpaste:}%
\wd\xxx\z@
\box\xxx
\special{endpaste:}%
}%
}}
\else
\long\def\GP@sendout[#1]#2{%
\sbox\z@{#2}%
\immediate\write\writedata@
{\the\ht\z@\space\the\dp\z@\space\the\wd\z@
\ifx\box#1\box\else\space\@percentchar#1\fi}%
\shipout\vbox{%
\vskip\ht\z@
\special{beginpaste:}%
\ht\z@\z@\dp\z@\z@\wd\z@\z@
\noindent\box\z@
\special{endpaste:}%
% the original had this rule, but seems not to be needed.
% \smash{\vrule \@height1sp\@width1sp\@depth\z@}%
\@@par
\vskip2pc%
\hbox{\normalfont File [\jobname], \#\number\c@page}}%
\stepcounter{page}}
\fi
\else
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Including DVI Sections Into The Current File
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Graphics will be able to include dvi file segments, reading size
% info from .dat files (compatible with dvipast.tex for plain tex)
\DeclareGraphicsRule{.dvi}{dvi}{.dat}{}
% Add .dvi to the default list of extensions.
\g@addto@macro\Gin@extensions{,.dvi}
% dvipaste allows multiple dvi fragments to be included from the
% same file. Add a new key num= (defaulting to 1) which says
% which bit to include. Maintaining numbers if you have a lot of
% fragments is inconvenient so may use symbolic references
% instead of number.
% ref=xxx refers to a fragment marked with the label xxx by use
% of an optional argument \sendout[xxx]{......} to \sendout.
% If \sendout is used with such an optional argument
% the fragment may be included either by number or by label.
% (The numeric form must be used if the fragment is included using
% dvipaste.tex's \paste command.)
\define@key{Gin}{num}{\def\Gin@num{#1}}
\define@key{Gin}{ref}{\def\Gin@ref{#1 }}
\setkeys{Gin}{num=1,ref=}
% Unlike other graphics formats, which only have natural height and
% width, dvipaste fragments are TeX boxes, with depth as well.
% add a new key to set the depth (for cases where you don't want to
% use a .dat file).
\define@key{Gin}{natdepth}{%
\Gin@defaultbp\@tempaa{#1}%
\Gin@nat@depth\@tempaa bp\relax}
% Ah. Don't look too carefully. The internal command \Gin@setfile
% in the kernel of the graphics package was not expecting this, and
% explicitly sets the depth of the graphic box to zero, so patch that
% to make it set it to the new \Gin@req@depth macro.
%
% pulls apart the macro at \dp\z@\z@ and then puts it all back together
% again.
\def\@tempa#1\dp\z@\z@#2!{%
\def\Gin@setfile##1##2##3{%
#1%
\dp\z@\Gin@req@depth
#2}}
\expandafter\@tempa\Gin@setfile{#1}{#2}{#3}!
% Scaling is not currently supported, so natural depth and
% required depth are the same.
\def\Gin@req@depth{\Gin@nat@depth}
\newdimen\Gin@nat@depth
% For each new file type the graphics package needs two functions.
% \Gread@<type> defines how to read the size information.
% \Ginclude@type defines how to set the actual box and specials.
% These functions are pretty similar to the code in dvipaste.tex
% as in the dvipaste.tex version, the size information for
% all the fragments in a single dvi file is saved in a macro
% so the file only needs to be read once.
\def\Gread@dvi#1{%
\expandafter\let\expandafter\@tempb\csname Gread@#1\endcsname
\ifx\@tempb\relax
\let\@tempb\@empty
\let\do\relax
\immediate\openin\@inputcheck#1 %
\catcode`\%9\relax
\ifeof\@inputcheck
\@latex@error{File `#1' not found}\@ehc
\else
\Gread@true
\loop
\read\@inputcheck to\@tempa
\ifeof\@inputcheck
\Gread@false
\else
\xdef\@tempb{\@tempb\do\@tempa\relax}%
\fi
\ifGread@
\repeat
\immediate\closein\@inputcheck
\fi
\global\expandafter\let\csname Gread@#1\endcsname\@tempb
\fi
%
% Temporarily set \do to count up to the required fragment number
% and then grab the size info. Then execute the list (in \@tempb).
\count@\z@
\Gread@false
\def\do##1 ##2 ##3 ##4\relax{%
\advance\count@\@ne
\def\@tempa{##4}%
\ifx\@tempa\Gin@ref
\edef\Gin@num{\the\count@}%
\fi
\ifnum\Gin@num=\count@
\Gread@true
\def\Gin@llx{0}%
\let\Gin@lly\Gin@llx
\Gin@defaultbp\Gin@urx{##3}%
\Gin@defaultbp\Gin@ury{##1}%
\Gin@nat@depth##2\relax
\fi}%
\@tempb
\let\do\noexpand}
\def\Ginclude@dvi#1{%
\ifGread@
\dimen@\Gin@nat@height
\advance\dimen@\Gin@nat@depth
\hbox{\special{dvipaste: \Gin@base\space\Gin@num}%
\lower\Gin@nat@depth\vbox to\dimen@{\hbox to\Gin@nat@width{}\vfil}}%
\else
\Gin@nosize{\Gin@base[\Gin@num]}%
\fi}
\fi
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