On 2/14/2021 10:43 PM, Aditya Mahajan wrote:
On Sun, 14 Feb 2021, Jigé wrote:
Hi all.
I'm trying to place a TikZ picture in the margin.
Here is a small example:
\usemodule[tikz]
\setuplayout[backspace=4cm, topspace=2cm, height=middle]
\starttext
\input{lorem}
\margintext{I have discovered a truly
marvelous proof ... but
this margin is too narrow
to contain it.}
\input{lorem}
\inmargin{\externalfigure[cow] [width=\marginwidth]}
% The above works.
% The following does not:
\input{lorem}
\inmargin{
\starttikzpicture
\draw[gray] (-2,0) grid (2,2) ;
\draw plot [domain=-2:2, samples=50, smooth] (\x,{\x * \x});
\stoptikzpicture
}
\stoptext
-> Undefined control sequence
Most likely because the argument of \inmargin is scanned upfront and at that
time \draw etc are undefined. One option is:
\startbuffer[picture]
\starttikzpicture
...
\stoptikzpicture
\stopbuffer
\inmargin{\getbuffer[picture]}
Another option (but better to do that in tikz module) is:
\let\draw\relax
\let\x\relax
\inmargin{\starttikzpicture ... \stoptikzpicture}
Actually the command \startmarginblock ... \stop... described in the ConText
reference works with a TikZ picture.
Because the \start ... \stop blocks don't scan the argument.
Here's one for you to ponder:
we have this:
% \doifelsenothing{#content}\donefalse\donetrue
we could use the slower (maybe even side effects)
% \doifelsetext{#content}\donetrue\donefalse
but go modern instead:
\ifparameter#content\donefalse\or\donetrue\else\donefalse\fi
i'll add that last one to lmtx
Hans
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