pgf colors

pgf colors

[Mojca Miklavec]

Hello,

I'm asking just in case that there is any PGF guru on this mailing
list, else I will ask on the PGF list.

I have noticed that TikZ terminal for gnuplot is broken (it worked
half a year ago) because of the following definitions:

\def\gpcolor#1{\tikzset{global #1}}
\tikzset{rgb color/.code={\pgfutil@definecolor{.}{rgb}{#1}\color{.}}}
\tikzset{global rgb color/.code={\pgfutil@definecolor{.}{rgb}{#1}\color{.}}}
\tikzset{global color/.code={\color{#1}}}

Example of usage:

\gpcolor{color=gp lt color 0}
\gpcolor{rgb color={1.000,0.000,0.000}}

Clearly the command \color{...} is something latex-specific. The
question is - does anyone know how to rewrite the commands written
above into generic code that will work in all of the three: plain TeX,
LaTeX and ConTeXt?

"Minimal" example:

\usemodule[tikz]

\edef\tikzatcode{\the\catcode`\@}
\catcode`\@=11

\def\gpcolor#1{\tikzset{global #1}}
\tikzset{rgb color/.code={\pgfutil@definecolor{.}{rgb}{#1}\color{.}}}
\tikzset{global rgb color/.code={\pgfutil@definecolor{.}{rgb}{#1}\color{.}}}
\tikzset{global color/.code={\color{#1}}}

\catcode`\@=\tikzatcode

\starttext

\starttikzpicture
\gpcolor{color=red}
% or: \gpcolor{rgb color={1.000,0.000,0.000}}
\draw (0,0)--(10,0)--(10,5)--(0,5)--cycle; % this one should be red
\stoptikzpicture

\stoptext

Thanks,
    Mojca
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________