File: poster.tex

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%% BEGIN poster.tex/poster.sty
%%
\def\fileversion{1.2}
\def\filedate{93/08/28}
%%
%% COPYRIGHT 1993, by Timothy Van Zandt, tvz@Princeton.EDU
%%
%% DESCRIPTION:
%%   poster.tex/poster.sty contains a macro for making posters and banners
%%   with TeX. It is compatible with most TeX macro packages, including Plain
%%   TeX, LaTeX, AmSTeX, and Ams-LaTeX. The only special requirement is that
%%   your printer not be bothered by text that lies off the page. This is
%%   true of most printers, including laser printers and PostScript printers.
%%
%% INSTALLATION:
%%   Put this file where your TeX looks for inputs, under the name poster.tex.
%%   Name a copy poster.sty to use as a LaTeX style option, or create a file
%%   poster.sty with the lines:
%%     \input poster.tex
%%     \endinput
%%
%% DOCUMENTATION:
%%   See poster.doc, and the sample files poster1.tex and poster2.tex.
%%   These might be appended to this file.
%%
%% COPYING:
%%   Copying of part or all of this file is allowed under the following
%%   conditions only:
%%   (1) You may freely distribute unchanged copies of the file. Please
%%       include the documentation when you do so.
%%   (2) You may modify a renamed copy of the file, but only for personal
%%       use or use within an organization.
%%   (3) You may copy fragments from the file, for personal use or for
%%       distribution, as long as credit is given where credit is due.
%%
%%   You are NOT ALLOWED to take money for the distribution or use of
%%   this file or modified versions or fragments thereof, except for
%%   a nominal charge for copying etc.
%%
%% CODE:
% These macros use TeX primitives, plus the Plain TeX commands:
%   \dimen@, \dimen@i, \count@, \newcount, \newtoks,
%   \p@, \z@, \@ne
%
% Check if file is loaded, announce file on terminal, and take care of @:
%
\csname PosterLoaded\endcsname
\let\PosterLoaded\endinput

\message{\space\space v\fileversion\space\space\filedate\space\space <tvz>}

\edef\TheAtCode{\the\catcode`\@}
\catcode`\@=11

\newbox\@posterbox
\newbox\poster@savedbox
\newbox\poster@cropbox
\newcount\poster@cnt

\def\POSTERpaperheight{11in}
\def\POSTERpaperwidth{8.5in}
\def\POSTERimageheight{10in}
\def\POSTERimagewidth{7.5in}
\def\POSTERlandscape{false}
\def\POSTERclip{none}
\def\POSTERcrop{corners}
\def\POSTERcropwidth{2pt}
\def\POSTERvcenter{false}
\def\POSTERhcenter{false}
\def\POSTERimmediatewrites{true}
\def\POSTERnumbering{automatic}

\def\poster@set#1[#2]{%
  \poster@@set#2,=\@nil,%
  \csname posterwrites@\POSTERimmediatewrites\endcsname
  #1}
\def\poster@@set#1=#2,{%
  \ifx\@nil#2\else
    \expandafter\ifx\csname POSTER#1\endcsname\relax
      \errmessage{Poster parameter `#1' not defined}%
    \else
      \expandafter\edef\csname POSTER#1\endcsname{#2}%
    \fi
    \expandafter\poster@@set
  \fi}

\def\poster@true{true}

\def\poster{%
  \begingroup
    \futurelet\next\poster@i}
\def\poster@i{%
  \ifx\next[%
    \expandafter\poster@set
  \fi
  \poster@ii}
\def\poster@ii{%
  \let\posternumbering@automatic\posternumbering@rowcol
  \afterassignment\poster@iii
  \setbox\@posterbox=\hbox}
\def\poster@iii{\aftergroup\poster@iv}
\def\poster@iv{%
    \setbox\@posterbox=\hbox{\raise\dp\@posterbox\box\@posterbox}%
    \poster@savepage
    \poster@magtonum
    \ifx\POSTERlandscape\poster@true \poster@landscape \fi
    \poster@hoffsets
    \poster@voffsets
    \ifx\POSTERvcenter\poster@true \poster@vcenter \fi
    \ifx\POSTERhcenter\poster@true \poster@hcenter \fi
    \poster@makecropbox
    \count\@ne=\z@
    \poster@vloop
  \endgroup}

\def\Poster{%
  \begingroup
    \futurelet\next\Poster@i}
\def\Poster@i{%
  \ifx\next[%
    \expandafter\poster@set
  \fi
  \Poster@ii}
\def\Poster@ii{%
  \let\posternumbering@automatic\posternumbering@rowcol
  \setbox\@posterbox=\hbox\bgroup\ignorespaces}
\def\endPoster{\egroup\poster@iv}

\def\PosterPage{\futurelet\next\PosterPage@i}
\def\PosterPage@i{%
  \ifx\next[%
    \expandafter\poster@set
  \fi
  \PosterPage@ii}
\def\PosterPage@ii{%
  \let\posternumbering@automatic\posternumbering@page
  \let\poster@trueshipout\shipout
  \let\shipout\poster@pageshipout}
\def\poster@pageshipout{%
  \begingroup
    \let\poster@savepage\relax
    \let\shipout\poster@trueshipout
    \setbox\@posterbox\box\voidb@x
    \afterassignment\poster@@pageshipout
    \setbox\@posterbox}
\def\poster@@pageshipout{%
  \ifvoid\@posterbox\aftergroup\poster@iv\else\poster@iv\fi}
\let\poster@swapcounters\relax

% Make writes immediates, so that they are not repeated.
\def\posterwrites@true{%
  \let\PosterSaved@write\write
  \let\PosterSaved@read\read
  \let\PosterSaved@openout\openout
  \let\PosterSaved@closeout\closeout
  \def\write{\PosterSaved@write-1{}\immediate\PosterSaved@write}%
  \def\read{\PosterSaved@write-1{}\immediate\PosterSaved@read}%
  \def\openout{\PosterSaved@write-1{}\immediate\PosterSaved@openout}%
  \def\closeout{\PosterSaved@write-1{}\immediate\PosterSaved@closeout}}

\def\posternumbering@rowcol{%
  \count\z@=\count\@ne
  \count\@ne=\count\tw@
  \count\tw@=\z@}

\def\posternumbering@serial{%
  \count\z@=\poster@cnt
  \count\@ne=\z@
  \count\tw@=\z@}

% Save current contents of page in case it contains \special's:
\def\poster@savepage{%
    \begingroup
      \global\setbox\poster@savedbox\box\voidb@x
      \output{\global\setbox\poster@savedbox\box\@cclv}%
      \par\hbox{}\penalty-10000
    \endgroup
    \ifvoid\poster@savedbox\else
      \dp\poster@savedbox\z@
      \ht\poster@savedbox\z@
      \wd\poster@savedbox\z@
    \fi}

% \poster@mag set to decimal value of \mag.
\def\poster@magtonum{%
  \ifnum\mag=1000
    \def\poster@mag{}%
  \else
    \count@=10000000
    \divide\count@\mag
    \advance\count@ by 200000000
    \expandafter\poster@@magtonum\the\count@
  \fi
  \dimen@=\POSTERcropwidth\relax
  \multiply\dimen@ 100
  \divide\dimen@\mag
  \multiply\dimen@ 10
  \edef\poster@cropwidth{\number\dimen@ sp }}

\def\poster@@magtonum#1#2#3#4#5#6#7#8#9{%
  \count@ #2#3#4#5\relax
  \edef\poster@mag{\the\count@.#6#7#8#9}}

\def\poster@landscape{%
  \let\next\POSTERpaperheight
  \let\POSTERpaperheight\POSTERpaperwidth
  \let\POSTERpaperwidth\next
  \let\next\POSTERimageheight
  \let\POSTERimageheight\POSTERimagewidth
  \let\POSTERimagewidth\next}

% \dimen@ii set to imageheight
\def\poster@voffsets{%
  \dimen@\POSTERimageheight\relax
  \dimen@ii=\poster@mag\dimen@
  \voffset=\POSTERpaperheight\relax
  \advance\voffset-\dimen@
  \divide\voffset\tw@
  \ifdim\voffset<\z@
    \voffset\z@
  \fi
  \dimen@=\poster@mag\voffset
  \edef\poster@vmargin{\number\dimen@ sp }%
  \advance\voffset\m@ne in
  \voffset=\poster@mag\voffset}

% \dimen@i set to imagewidth
\def\poster@hoffsets{%
  \dimen@\POSTERimagewidth\relax
  \dimen@i=\poster@mag\dimen@
  \hoffset=\POSTERpaperwidth\relax
  \advance\hoffset-\dimen@
  \divide\hoffset\tw@
  \ifdim\hoffset<\z@
    \hoffset=\z@
  \fi
  \dimen@=\poster@mag\hoffset
  \edef\poster@hmargin{\number\dimen@ sp }%
  \advance\hoffset\m@ne in
  \hoffset=\poster@mag\hoffset}

% Center vertically
\def\poster@vcenter{%
  \count@=\ht\@posterbox
  \divide\count@\dimen@ii
  \dimen@=\the\count@\dimen@ii
  \advance\dimen@-\ht\@posterbox
  \ifdim\dimen@<-.1pt
    \advance\count@\@ne
  \fi
  \setbox\@posterbox=\hbox{\vbox to \the\count@\dimen@ii{%
    \vss\box\@posterbox\vss}}}

% Center horizontally
\def\poster@hcenter{%
  \count@=\wd\@posterbox
  \divide\count@\dimen@i
  \dimen@=\the\count@\dimen@i
  \advance\dimen@-\wd\@posterbox
  \ifdim\dimen@<-.1pt
    \advance\count@\@ne
  \fi
  \setbox\@posterbox=\hbox to \the\count@\dimen@i{%
    \hss\box\@posterbox\hss}}

% Print rows:
\def\poster@vloop{%
  \ifdim\ht\@posterbox>.1\p@
    \ifdim\ht\@posterbox<\dimen@ii
      \dimen@ii=\ht\@posterbox
      \poster@makecropbox
    \fi
    \advance\count\@ne\@ne
    \count\tw@=\z@
    \dimen@=\wd\@posterbox
    \poster@hloop
    \dimen@=\ht\@posterbox
    \advance\dimen@-\dimen@ii
    \ht\@posterbox\dimen@
    \expandafter\poster@vloop
  \fi}

% Print columns.
% \dimen@ is used as scratch to keep track of remaining width.
\def\poster@hloop{%
  \ifdim\dimen@>.1\p@
    \advance\count\tw@ by \@ne
    \begingroup
      \ifdim\dimen@<\dimen@i
        \dimen@i=\dimen@
        \poster@makecropbox
      \fi
      \ifnum\count\@ne=\@ne
        \begingroup
          \advance\dimen@ii.1\p@
          \ifdim\ht\@posterbox>\dimen@ii
            \global\let\next\relax
          \else
            \gdef\next{\count\@ne=\count\tw@ \count\tw@=\z@}%
          \fi
        \endgroup
        \next
      \fi
      \global\advance\poster@cnt\@ne
      \csname posternumbering@\POSTERnumbering\endcsname
      \poster@shipout
    \endgroup
    \advance\dimen@-\dimen@i
    \expandafter\poster@hloop
  \fi}

% Shipout, aligning everything at the top-left corner:
\def\poster@shipout{%
  \shipout\hbox{%
    \ifvoid\poster@savedbox\else\box\poster@savedbox\fi
    \csname beginposterclip@\POSTERclip\endcsname
    \lower\ht\@posterbox\hbox to\z@{%
      \advance\dimen@-\wd\@posterbox
      \kern\dimen@
      \copy\@posterbox
      \hss}%
    \csname endposterclip@\POSTERclip\endcsname
    \copy\poster@cropbox}}%

% clip=pstricks
\def\beginposterclip@pstricks{%
  \expandafter\ifx\csname @pstrickserr\endcsname\relax
    \errmessage{%
      You must load PSTricks to use poster.tex's clip=pstricks option!}%
      \global\let\beginposterclip@pstricks\relax
  \else
    \gdef\beginposterclip@pstricks{\beginposterclip@@pstricks}%
    \gdef\endposterclip@pstricks{\pstVerb{currentpoint initclip moveto}}%
    \beginposterclip@@pstricks
  \fi}

\let\endposterclip@pstricks\relax

\def\beginposterclip@@pstricks{%
  \pst@Verb{%
    /mtrxc CM def
    \tx@STV
    CP translate
    newpath
    0 0 moveto
    \pst@number\dimen@i 0 rlineto
    0 \pst@number\dimen@ii neg rlineto
    \pst@number\dimen@i neg 0 rlineto
    closepath
    clip
    newpath
    0 0 moveto
    mtrxc setmatrix}}

\def\poster@makecropbox{%
  \setbox\poster@cropbox=\hbox{\csname postercrop@\POSTERcrop\endcsname}%
  \ht\poster@cropbox=\z@
  \dp\poster@cropbox=\z@
  \wd\poster@cropbox=\z@}

\def\postercrop@corners{%
  \vtop{%
    \hbox{%
      \kern -\poster@hmargin
      \vrule height \poster@cropwidth width \poster@hmargin
      \kern -\poster@cropwidth
      \vrule height \poster@vmargin width \poster@cropwidth
      \kern \dimen@i
      \vrule height \poster@vmargin width \poster@cropwidth
      \kern -\poster@cropwidth
      \vrule height \poster@cropwidth width \poster@hmargin}%
    \nointerlineskip
    \vskip\dimen@ii
    \hbox{%
      \kern -\poster@hmargin
      \vrule height \z@ depth \poster@cropwidth width \poster@hmargin
      \kern -\poster@cropwidth
      \vrule height \z@ depth \poster@vmargin width \poster@cropwidth
      \kern \dimen@i
      \vrule height \z@ depth \poster@vmargin width \poster@cropwidth
      \kern -\poster@cropwidth
      \vrule height \z@ depth \poster@cropwidth width \poster@hmargin}}}%

\def\postercrop@full{%
  \begingroup
    \hbox to\z@{%
      \advance\dimen@ii\poster@vmargin
      \kern -\poster@cropwidth
      \vrule height \poster@vmargin depth \dimen@ii width \poster@cropwidth
      \kern \dimen@i
      \vrule height \poster@vmargin depth \dimen@ii width \poster@cropwidth
      \hss}%
    \kern -\poster@hmargin
    \vtop{%
      \advance\dimen@i \poster@hmargin
      \advance\dimen@i \poster@hmargin
      \kern-\poster@cropwidth
      \hrule height \poster@cropwidth width \dimen@i
      \kern\dimen@ii
      \hrule height \z@ depth \poster@cropwidth width \dimen@i}%
  \endgroup}

\catcode`\@=\TheAtCode\relax
\endinput
%%
%% END poster.tex