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% (C) 2006 Josselin Noirel
%
% Package cellspace: Ensuring a minimal spacing of table cells.
%
% This material is subject to the LaTeX Project Public License. See
% http://www.ctan.org/tex-archive/help/Catalogue/licenses.lppl.html .
%
\def \@tempa $#1 #2 #3 #4 #5 #6 #7 ${%
\def \filedate {#4}%
\def \fileversion {v#3}%
}
\@tempa $Id: cellspace.sty,v 1.5 2006/03/13 19:28:10 noirel Exp $
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{cellspace}%
[\filedate \space \fileversion \space Spacing table cells (JN)]
\RequirePackage{ifthen} % \newboolean, \ifthenelse
\RequirePackage{array} % \newcolumntype, \@{start,end}pbox
\RequirePackage{calc} % \setlength{<dimen>}{<expression>}
% 2. Check the definitions of \@startpbox and \@endpbox
% from array.sty
\CheckCommand*{\@startpbox}[1]{%
\bgroup
\setlength\hsize{#1}%
\@arrayparboxrestore
\everypar{%
\vrule \@height \ht\@arstrutbox \@width \z@
\everypar{}%
}%
}
\CheckCommand*{\@endpbox}{\@finalstrut\@arstrutbox \egroup\hfil}
% 3. Declare registers and other variables
\newboolean{cellspace@lr} % Is it a LR column type ?
\newboolean{cellspace@} % Is it a paragraph column that needs to be
% spaced out?
\@ifdefinable \cellspacetoplimit {\newdimen \cellspacetoplimit}
\@ifdefinable \cellspacebottomlimit {\newdimen \cellspacebottomlimit}
\@ifdefinable \cellspace@firstht {\newdimen \cellspace@firstht} % Global
\@ifdefinable \cellspace@lastdp {\newdimen \cellspace@lastdp} % Global
\setlength{\cellspacetoplimit}{1pt}
\setlength{\cellspacebottomlimit}{1pt}
% 4. Redefinitions
\renewcommand*{\@startpbox}[1]{%
\bgroup
\setbox \@tempboxa = \vtop \bgroup
\color@begingroup
\setlength{\hsize}{#1}%
\@arrayparboxrestore
% We need to test \ifcellspace@ within the \everypar
% because it is still not set correctly
\everypar{%
\unless \ifcellspace@
\vrule \@height \ht\@arstrutbox \@width \z@
\fi
\everypar{}%
}%
}
\renewcommand*{\@endpbox}{%
\unless \ifcellspace@
\@finalstrut \@arstrutbox
\fi
\par
% Save the depth of the last line
\global \cellspace@lastdp = \prevdepth
\color@endgroup
% \ifcellspace@ is only locally true, so we need to expand it before
% \egroup stops it action
\expandafter
\egroup
\ifcellspace@
% Save the height of the first line
\global \cellspace@firstht = \ht\@tempboxa
\setbox \@tempboxa = \vbox {%
\setlength{\@tempdima}{\ht\@arstrutbox - \cellspace@firstht}%
\ifthenelse{\lengthtest{\@tempdima<\cellspacetoplimit}}{%
\setlength{\@tempdima}{\cellspace@firstht + \cellspacetoplimit}%
}{%
\setlength{\@tempdima}{\ht\@arstrutbox}%
}%
\hbox{\vrule height \@tempdima width 0pt depth 0pt }%
\nointerlineskip
\vskip-\cellspace@firstht
\unvbox \@tempboxa
\setlength{\@tempdima}{\dp\@arstrutbox - \cellspace@lastdp}%
\ifthenelse{\lengthtest{\@tempdima<\cellspacebottomlimit}}{%
\setlength{\@tempdima}{\cellspace@lastdp + \cellspacebottomlimit}%
}{%
\setlength{\@tempdima}{\dp\@arstrutbox}%
}%
\vskip-\cellspace@lastdp
\nointerlineskip
\hbox{\vrule height 0pt depth \@tempdima width 0pt }%
}%
\fi
\unvbox \@tempboxa
\egroup
\hfil
}
\let \@@startpbox = \@startpbox
\let \@@endpbox = \@endpbox
% 5. Defining a prefix
\newcolumntype{S}[1]{>{\bcolumn #1\@nil}#1<{\ecolumn}}
\newcommand*{\bcolumn}{}
\def \bcolumn #1#2\@nil {%
\cellspace@lrtrue
\@expandtwoargs \in@{#1}{\cellspace@parcoltypes}%
\ifin@
\cellspace@lrfalse
\fi
\ifcellspace@lr
\begingroup \lrbox {\@tempboxa}%
\else
\setboolean{cellspace@}{true}%
\fi
}
\newcommand*{\ecolumn}{%
\ifcellspace@lr
\endlrbox \endgroup
\setlength{\@tempdima}{\ht\@arstrutbox - \ht\@tempboxa}%
\ifthenelse{\lengthtest{\@tempdima<\cellspacetoplimit}}{%
\setlength{\@tempdima}{\ht\@tempboxa + \cellspacetoplimit}%
\ht\@tempboxa = \@tempdima
}{}%
\setlength{\@tempdima}{\dp\@arstrutbox - \dp\@tempboxa}%
\ifthenelse{\lengthtest{\@tempdima<\cellspacebottomlimit}}{%
\setlength{\@tempdima}{\dp\@tempboxa + \cellspacebottomlimit}%
\dp\@tempboxa = \@tempdima
}{}%
\usebox{\@tempboxa}%
\fi
}
\newcommand*{\cellspace@parcoltypes}{pmb}
\newcommand*{\addparagraphcolumntypes}[1]{%
\edef \cellspace@parcoltypes {\cellspace@parcoltypes #1}%
}
\@onlypreamble \addparagraphcolumntypes
\endinput
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