% Self-documenting file
\ifx \Comment \Undefined
\long \def \Comment #1\EndComment {}
\else
\ifx \EndComment \Undefined
\def \EndComment
{\message {Error: \noexpand \EndComment encountered
without preceding \noexpand \Comment}}
\else %%% both defined; let's hope they're the right definitions!
\fi
\fi
%%% Author: Philip Taylor (RHBNC) <P.Taylor@Rhul.Ac.Uk>
%%% Cropmarks.TeX V1.4 Copyright (C) Philip Taylor, MCMLXXXXII
\Comment % The Licence
Unlimited copying and redistribution of this file
is permitted so long as the file is not modified
in any way.
Modifications may be made for private purposes (though
this is discouraged, as it could result in documents
typesetting differently on different systems) but if
such modifications are re-distributed, the modified
file must not be capable of being confused with the
original. In particular, this means
(a) the filename (the portion before the extension, if any)
must not match either of the sequences :
CROPMARKS
CROP-MARKS
regardless of case, and
(b) the file must contain conditions identical to these,
except that the modifier/distributor may, if he or she
wishes, augment the list of proscribed filenames.
\EndComment
%%% Usage:
%%% \input cropmarks
%%% \topcropmark = <dimen> [plus <dimen>] [minus <dimen>]
%%% \bottomcropmark = <dimen> [plus <dimen>] [minus <dimen>]
%%% \leftcropmark = <dimen> [plus <dimen>] [minus <dimen>]
%%% \rightcropmark = <dimen> [plus <dimen>] [minus <dimen>]
%%% \lrcropmarkstrue ;;; iff you want alternating left and right cropmarks only
%%% \rvcropmarkstrue ;;; iff you want recto and verso specified independently
%%% (in which case the first four variables are two-valued
%%% as \recto<var> and \verso<var>).
%%% Square brackets indicate optional items, and the <dimen>s are
%%% respectively (and all measured w.r.t. the origin, which is the
%%% top left corner of the notional, rather than physical page; the
%%% exact origin will need to be determined by inspection)
%%% The distance to the centre of the cross;
%%% The distance which the cross extends beyond the page limits;
%%% The distance which the cross extends within the page limits.
%%% Any or all can be zero <unit>s. For conventional (exo-) cropmarks, the
%%% `plus' component indicates the length of the mark, and the `minus' component
%%% should be omitted or zero. For inverted (endo-) cropmarks, the `plus'
%%% component should be omitted or zero, and the `minus' component indicates the
%%% length of the mark. If `plus' or `minus' components are negative, this
%%% has the effect of a `white cropmark' extending in the reverse direction
%%% for the specified distance; this may be used to achieve non-touching marks.
%%% The first and only mandatory component may be also negative, to cope with
%%% pathological origins.
%
%%% A test which will allow us to be read regardless of the \catcode of `@'
%
\newif \ifatletter
\ifcat @A\atlettertrue \else \catcode `\@ = 11 \atletterfalse \fi
\ifx \c@tcodeminus \undefined \else \message {Warning: previous
meaning of \string \c@tcodeminus \space lost} \fi \edef
\c@tcodeminus {\the \catcode `\-} \catcode `\- = 12
%
\message {CROPMARKS.TEX V1.4 Copyright (C) 05-Mar-1992 13:43:28
Philip Taylor}
%
%
%%% Miscellaneous variables
%
\newif \iflrcropmarks \lrcropmarksfalse
\newif \ifrvcropmarks \rvcropmarksfalse
\newdimen \cropmarkwidth \cropmarkwidth = 0.4 pt
\newdimen \t@pshift
\newdimen \b@ttomshift
\newdimen \l@ftshift
\newskip \topcropmark
\newskip \leftcropmark
\newskip \rightcropmark
\newskip \bottomcropmark
\newskip \rectotopcropmark
\newskip \rectoleftcropmark
\newskip \rectorightcropmark
\newskip \rectobottomcropmark
\newskip \versotopcropmark
\newskip \versoleftcropmark
\newskip \versorightcropmark
\newskip \versobottomcropmark
\newskip \m@rkskip
\newskip \m@rkplus
\newskip \m@rkminus
\newbox \p@gebox
\newbox \cr@pmarkbox
\newbox \topcr@pmarkbox
\newbox \bottomcr@pmarkbox
%
%%% Extraordinary arcanery, to parse <skip>s into <dimen>s; any better ways ?
%
\begingroup
\catcode `\P = 12 \catcode `\L = 12 \catcode `\U = 12 \catcode `\S =
12 \catcode `\M = 12 \catcode `\I = 12 \catcode `\N = 12 \catcode
`\T = 12 \globaldefs = 1 \lowercase
{%
\def \p@rseskip #1%
{\expandafter \p@rs@skip \the #1 PLUS 0.0PT MINUS 0.0PT \@ndparse #1 }
\def \p@rs@skip #1 PLUS #2 MINUS #3\@ndparse #4
{%
\m@rkskip = #1%
\m@rkplus = #2%
\m@rkminus = #3%
\ifdim \m@rkminus = 0.0 pt
\expandafter \p@rs@sk@p \the \m@rkskip MINUS 0.0PT \@ndparse
\fi
}%
\def \p@rs@sk@p #1MINUS #2\@ndparse {\m@rkskip = #1 \m@rkminus = #2 }
}
\endgroup
%
%%% Take control of \shipout, to force it to add cropmarks
%
\let \ship@ut = \shipout
\def \shipout {\futurelet \b@x \whichb@x}
\def \whichb@x
{%
\ifx \b@x \vbox
\def \n@xt {\setbox \p@gebox = }%
\afterassignment \Shipout
\else \ifx \b@x \hbox
\def \n@xt {\setbox \p@gebox = }%
\afterassignment \Shipout
\else \ifx \b@x \box
\def \n@xt {\setbox \p@gebox = }%
\afterassignment \Ship@ut
\else \ifx \b@x \copy
\def \n@xt {\setbox \p@gebox = }%
\afterassignment \Ship@ut
\else
\def \n@xt {\ship@ut}%
\message {Sorry, can't understand
what follows \shipout}%
\fi
\fi
\fi
\fi
\n@xt
}
\def \Shipout {\aftergroup \Ship@ut}
\def \Ship@ut
{%
\ifrvcropmarks
\ifodd \pageno
\topcropmark = \rectotopcropmark
\bottomcropmark = \rectobottomcropmark
\leftcropmark = \rectoleftcropmark
\rightcropmark = \rectorightcropmark
\else
\topcropmark = \versotopcropmark
\bottomcropmark = \versobottomcropmark
\leftcropmark = \versoleftcropmark
\rightcropmark = \versorightcropmark
\fi
\fi
\setbox \topcr@pmarkbox =
\hbox \bgroup
\p@rseskip \leftcropmark
\iflrcropmarks
\ifodd \count 0
\let \next = \phantom
\else
\let \next = \relax
\fi
\else
\let \next = \relax
\fi
\next {\ifdim \m@rkminus < 0 pt
\begingroup
\advance \m@rkplus by \m@rkminus
\vrule height \cropmarkwidth
depth 0 pt width \m@rkplus
\kern -\m@rkminus
\endgroup
\else
\vrule height \cropmarkwidth
depth 0 pt width \m@rkplus
\fi
\begingroup
\p@rseskip \topcropmark
\vrule height \m@rkplus
depth \m@rkminus
width \cropmarkwidth
\endgroup
\ifdim \m@rkplus < 0 pt
\begingroup
\advance \m@rkminus by \m@rkplus
\rlap {\kern -\m@rkplus
\vrule height \cropmarkwidth
depth 0 pt width \m@rkminus}%
\endgroup
\else
\rlap {\vrule height \cropmarkwidth
depth 0 pt width \m@rkminus}%
\fi
}%
\hskip \m@rkskip
\p@rseskip \rightcropmark
\hskip \m@rkskip
\iflrcropmarks
\ifodd \count 0
\let \next = \relax
\else
\let \next = \phantom
\fi
\else
\let \next = \relax
\fi
\next {\ifdim \m@rkplus < 0 pt
\begingroup
\advance \m@rkminus by \m@rkplus
\llap {\vrule height \cropmarkwidth
depth 0 pt width \m@rkminus
\kern -\m@rkplus
}%
\endgroup
\else
\llap {\vrule height \cropmarkwidth
depth 0 pt width \m@rkminus
}%
\fi
\begingroup
\p@rseskip \topcropmark
\vrule height \m@rkplus
depth \m@rkminus
width \cropmarkwidth
\endgroup
\ifdim \m@rkminus < 0 pt
\begingroup
\advance \m@rkplus by \m@rkminus
\kern -\m@rkminus
\vrule height \cropmarkwidth
depth 0 pt width \m@rkplus
\endgroup
\else
\vrule height \cropmarkwidth
depth 0 pt width \m@rkplus
\fi
}%%%%%%%% end of parameter to \next
\egroup%%%%%%%% end of \bgroup ... \egroup to \setbox ...
\ht \topcr@pmarkbox = 0 pt
\dp \topcr@pmarkbox = 0 pt
\wd \topcr@pmarkbox = \wd \p@gebox
\setbox \bottomcr@pmarkbox =
\hbox \bgroup
\p@rseskip \leftcropmark
\iflrcropmarks
\ifodd \count 0
\let \next = \phantom
\else
\let \next = \relax
\fi
\else
\let \next = \relax
\fi
\next {\ifdim \m@rkminus < 0 pt
\begingroup
\advance \m@rkplus by \m@rkminus
\vrule height \cropmarkwidth
depth 0 pt width \m@rkplus
\kern -\m@rkminus
\endgroup
\else
\vrule height \cropmarkwidth
depth 0 pt width \m@rkplus
\fi
\begingroup
\p@rseskip \bottomcropmark
\vrule height \m@rkminus
depth \m@rkplus
width \cropmarkwidth
\endgroup
\ifdim \m@rkplus < 0 pt
\begingroup
\advance \m@rkminus by \m@rkplus
\rlap {\kern -\m@rkplus
\vrule height \cropmarkwidth
depth 0 pt width \m@rkminus}%
\endgroup
\else
\rlap {\vrule height \cropmarkwidth
depth 0 pt width \m@rkminus}%
\fi
}%
\hskip \m@rkskip
\p@rseskip \rightcropmark
\hskip \m@rkskip
\iflrcropmarks
\ifodd \count 0
\let \next = \relax
\else
\let \next = \phantom
\fi
\else
\let \next = \relax
\fi
\next {\ifdim \m@rkplus < 0 pt
\begingroup
\advance \m@rkminus by \m@rkplus
\llap {\vrule height \cropmarkwidth
depth 0 pt width \m@rkminus
\kern -\m@rkplus
}%
\endgroup
\else
\llap {\vrule height \cropmarkwidth
depth 0 pt width \m@rkminus
}%
\fi
\begingroup
\p@rseskip \bottomcropmark
\vrule height \m@rkminus
depth \m@rkplus
width \cropmarkwidth
\endgroup
\ifdim \m@rkminus < 0 pt
\begingroup
\advance \m@rkplus by \m@rkminus
\kern -\m@rkminus
\vrule height \cropmarkwidth
depth 0 pt width \m@rkplus
\endgroup
\else
\vrule height \cropmarkwidth
depth 0 pt width \m@rkplus
\fi
}%%%%%%%% end of parameter to \next
\egroup%%%%%%%% end of \bgroup ... \egroup to \setbox ...
\ht \bottomcr@pmarkbox = 0 pt
\dp \bottomcr@pmarkbox = 0 pt
\wd \bottomcr@pmarkbox = \wd \p@gebox
\setbox \cr@pmarkbox = \vbox
\bgroup
\offinterlineskip
\p@rseskip \leftcropmark \l@ftshift = \m@rkskip
\p@rseskip \topcropmark \t@pshift = \m@rkskip
\p@rseskip \bottomcropmark \b@ttomshift = \m@rkskip
\advance \l@ftshift by \m@rkplus
\advance \l@ftshift by \cropmarkwidth
\vskip -\t@pshift
\moveleft \l@ftshift \box \topcr@pmarkbox
\vskip +\t@pshift
\vskip +\b@ttomshift
\moveleft \l@ftshift \box \bottomcr@pmarkbox
\vskip -\b@ttomshift
\egroup
\setbox \p@gebox = \vbox
{\offinterlineskip
\box \cr@pmarkbox
\box \p@gebox}%
\ship@ut \box \p@gebox
}
%
%%% Restore \catcode of `-' & `@'
%
\catcode `\- = \c@tcodeminus
\let \c@tcodeminus = \undefined
\ifatletter \else \catcode `\@ = 12 \fi
%%% All done