% __TPtab.tex,v 1.3 2002/11/14 20:46:00 hansfn Exp
%  
% TeXPower bundle - dynamic online presentations with LaTeX
% Copyright (C) 1999-2002 Stephan Lehmke
% 
% This program is free software; you can redistribute it and/or
% modify it under the terms of the GNU General Public License
% as published by the Free Software Foundation; either version 2
% of the License, or (at your option) any later version.
% 
% This program is distributed in the hope that it will be useful,
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
% GNU General Public License for more details.
%
%-----------------------------------------------------------------------------------------------------------------
% File: __TPtab.tex
%
% Code for the tabular example for the package texpower.sty.
% 
% This file is input by others. Don't compile it separately.
%
%-----------------------------------------------------------------------------------------------------------------
% Autor: Stephan Lehmke <Stephan.Lehmke@cs.uni-dortmund.de>
%
% v0.0.1 Mar 20, 2000: First version for the pre-alpha release of TeXPower.
%
% v0.0.2 Apr 27, 2000: Some small changes in preparation of the update to TeXpower v0.0.7.
%


%-----------------------------------------------------------------------------------------------------------------
%
\makeslidetitle{\macroname{stepwise} Example: A Tabular}

% In the following, a tabular object is built incrementally. 
% Observe how & and \\ are placed inside the following step to avoid `opening' empty cells.
% The macro \tabend is redefined to `replace' the final \hline by \cline's when a line is not yet complete.
%
  \newcommand{\tabend}{\\\hline}%

  \stepwise
  {%
    \hrule height 0pt\relax% This is neccessary to avoid a glitch in vertical spacing. Don't ask me why. I'll try to get
                           % this right until the first alpha version.
    \begin{center}
      \step
      {%
        \begin{tabular}{|l|l|l|}
          \hline
          They can & be built & line by line%
          \step{\\\hline or cell\renewcommand{\tabend}{\\\cline{1-1}}}%
          \step{& by\renewcommand{\tabend}{\\\cline{1-2}}}%
          \step{& cell\renewcommand{\tabend}{\\\hline}}%
          \step
          {%
            \\\hline
                                %
                                % Again, \step's are nested inside each other...
                                %
            \step{or}&\step{like}&\step{this.}%
            }%
          \step{\\\hline But\renewcommand{\tabend}{\\\cline{1-1}}}%
          \step{& beware\renewcommand{\tabend}{\\\cline{1-2}}}%
          \step{& of cells growing horizontally!\renewcommand{\tabend}{\\\hline}}%
          \tabend
        \end{tabular}%
        }%
    \end{center}%
    }%

%%% Local Variables: 
%%% mode: latex
%%% fill-column: 120
%%% TeX-master: "tabexample"
%%% End: