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Sprite 1984 - 1993
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multibox.sty
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1991-05-20
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% MULTIBOX.STY - a style option to provide multiple boxes in pictures
% ============
% Author: Brian HAMILTON KELLY, Royal Military College of Science,
% Shrivenham, SWINDON, SN6 8LA, United Kingdom
% Date: 13 October 1988
%
% This style file option provides two new commands for use in the picture
% environment:
%
% \multimake(x,y)(dx,dy){n}(w,h)[<pos>]{Text_1}{Text_2}...{Text_n}
% \multiframe(x,y)(dx,dy){n}(w,h)[<pos>]{Text_1}{Text_2}...{Text_n}
%
% These commands set the n texts Text_1..Text_n inside a \makebox or
% \framebox respectively. The first box has its lower-left corner at (x,y),
% and successive boxes are located at (x+dx,y+dy),..,(x+(n-1)dx,y+(n-1)dy).
% Each box has width and height determined by (w,h), and the optional
% box placement parameter <pos> is applied to all the generated texts
%
\newtoks\multi@rg
\def\multiframe{\let\@putitem=\@iframepicbox \multib@x}
\def\multimake{\let\@putitem=\@imakepicbox \multib@x}
\def\multib@x(#1,#2)(#3,#4)#5(#6,#7){\@xdim=#1\unitlength \@ydim=#2\unitlength
\def\@dxdim{#3} \def\@dydim{#4}
\@multicnt=#5 \def\@Xsize{#6} \def\@Ysize{#7}
\@ifnextchar [{\imultib@x}{\imultib@x[]}
}
% The liberal use of % at the ends of lines is to prevent the ingestion of
% superfluous spaces which would otherwise upset the horizontal positioning
% of the boxes.
\def\imultib@x[#1]{\@killglue\relax
\def\p@sarg{#1}%
\d@multi
}
% We need the expanded definition of \i@putitem because \@imakepicbox DOESN'T
% expand its #3 argument (the optional text placement bit). However, it can
% only recognize the letters b, t, l and r in this position, so \p@sarg is no
% use. Therefore we expand the arguments, producing an appropriate call.
\def\d@multi{%
\ifnum\@multicnt > 0
\def\next@rg##1{%
\multi@rg={{##1}}% Assign the next argument of original text to \multi@rg
\edef\@iputitem{%
\noexpand\@putitem(\@Xsize,\@Ysize)[\p@sarg]{\the\multi@rg}%
}%
\raise\@ydim\hbox to \z@{\kern \@xdim \@iputitem\hss}%
\advance\@xdim by \@dxdim\unitlength \advance\@ydim by \@dydim\unitlength
\advance\@multicnt by \m@ne
\d@multi}% End of (re-)definition of \next@rg
\else
\let\next@rg=\ignorespaces
\fi % Now execute \next@rg;
\next@rg % This will read the text, set it and then call \d@multi recursively
}