[PSTricks] yet another matrix node definition

[Christophe Broult]

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Hello,

I'd like to define a new kind of matrix node. The problem is that the
text should not be typesetted before being passed to the node
command. I guess the following code should clarify what I want to
obtain.

Thank you for your attention,

Chris


\documentclass{article}

\usepackage{pst-node}

\begin{document}

\makeatletter
\newcommand{\NewIdea}[2]{\@namedef{Idea@#1}{\psframebox{#2}}}
\newcommand{\NewMainIdea}[2]{%
  \@namedef{Idea@#1}{\psframebox[doubleline=true]{#2}}}
\newcommand{\UseIdea}[1]{\rnode{#1}{\@nameuse{Idea@#1}}}
\makeatother

The following works
\NewIdea{foo}{foo idea}
\NewMainIdea{bar}{bar is formatted differently}
\begin{psmatrix}
  \UseIdea{foo} & \UseIdea{bar}
\end{psmatrix}
\ncline{foo}{bar}
but I'd like to be able to define a new node type with something like
the code included at the end of this message (I can't figure out how
to do it myself) and write:

\begin{verbatim}
\MatrixNodeDefinitionWithCmd{UseIdea}{\UseIdea}
\begin{psmatrix}[mnode=UseIdea]
  foo & bar
\end{psmatrix}
\ncline{foo}{bar}
\end{verbatim}

To avoid possible name clashes, I'm defining the commands in their own
name space. That's why I don't want to define the commands
\verb+\foo+, \verb+\bar+ with something like

\makeatletter
\renewcommand{\NewIdea}[2]{\@namedef{#1}{\rnode{#1}{\psframebox{#2}}}}
\renewcommand{\NewMainIdea}[2]{%
  \@namedef{#1}{\rnode{#1}{\psframebox[doubleline=true]{#2}}}}
\NewIdea{foo}{foo idea}
\NewMainIdea{bar}{bar is formatted differently}
\makeatother

and write:

\begin{psmatrix}
  \foo & \bar
\end{psmatrix}
\ncline{foo}{bar}

Thank you,

Chris

\end{document}

%% Code provided by Denis Girou last summer

\makeatletter

% To define personal nodes for the psmatrix environment
% Denis Girou <Denis.Girou at idris.fr> - Aug. 1, 1997
\def\MatrixNodeDefinition#1#2#3{%
% #1=type of node name, #2=macro to apply to the node contents, #3=parameters
% Ex: \MatrixNodeDefinition{MyNodeType}{psframebox}{linecolor=red}
\expandafter\def\csname mnode@#1\endcsname{%
% Modification of \Rnode at ii
\def\Rnode at ii{%
% DG modification begin - Aug. 1, 1997
\setbox\pst at hbox=\hbox{\ifx#3\@empty\else\psset{#3}\fi\csname #2 at ii\endcsname}
% DG modification end
\use at par
\pst at dima=\psk at href\wd\pst at hbox
\advance\pst at dima\wd\pst at hbox
\divide\pst at dima 2
\pssetlength\pst at dimb{\psk at vref}}
\rnode at iii\Rnode at ii{\psm at thenode}}}

% For more sophisticated definitions, we must used low level macro definitions
\def\mnode at MyNodeTypeD{%
% Modification of \Rnode at ii
\def\Rnode at ii{%
% DG modification begin - Aug. 1, 1997
\setbox\pst at hbox=\hbox{\pscirclebox at ii}%
\setbox\pst at hbox=\hbox{\psset{linecolor=red,framesep=0}\pstribox at ii}%
\setbox\pst at hbox=\hbox{\psset{linecolor=yellow,framesep=0}\psframebox at ii}
% DG modification end
\use at par
\pst at dima=\psk at href\wd\pst at hbox
\advance\pst at dima\wd\pst at hbox
\divide\pst at dima 2
\pssetlength\pst at dimb{\psk at vref}}
\rnode at iii\Rnode at ii{\psm at thenode}}

\makeatother


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