Still working on that.
I hope you can help me here, Aditya!
I’ll add these issues to the tracker of t-filter, if it makes sense.
Testing with: ConTeXt ver: 2021.01.24 16:07 LMTX fmt: 2021.1.25
The setup below works, but only with \starttikz ... \stoptikz so far, I don’t
like the output file names, and using the working directory is tricky.
(1) \processFILTERfile
\processtikzfile{img/example.pgf}
can’t find the file:
t-filter > cached output file 'tikztemp/example1.pgf.pdf' missing.
Rerunning filter
t-filter > file 'tikztemp/example1.pgf.pdf' cannot be found
t-filter > current filter : tikzThick
t-filter > base file : example1.pgf
t-filter > input file : img/example1.pgf
t-filter > output file : tikztemp/example1.pgf.pdf
...
system > 13: filename=img/example1.pgf foundname=img/example1.pgf
fullname=.../img/example1.pgf usedmethod=direct
Looks like ConTeXt can find the file, but the filter module cannot.
--trackers=resolvers.schemes (or \enabletrackers) doesn’t change anything WRT
log/output.
Since this fails already, I don’t know if \processFILTERfile also uses
bufferbefore/-after (it should).
(2) working directory
Since ConTeXt can’t put generated (temporary) files into a directory and
--result also only renames afterwards, the directory key doesn’t help, I had to
add "mv" and "cd" to my filtercommand.
I didn’t check yet if caching works.
(3) file names
Using \processFILTERfile the original file name base is preserved, according to
the log entry above.
If I use \starttikz[name=example], I get "JOBNAME-temp-tikzThick-example.tmp".
I’d like to get something like "COMPONENTNAME-##-example.tmp" or a path like
"COMPONENTNAME/example_##.tmp".
Is there a configuration hook in the module to change name generation?
(4) subprocess parameters
I’d like to forward some parameters from \starttikz to the temp buffer, e.g.
\starttikz[name=example][mystyle=thick]
(using the same syntax as \startsection with a second pair of brackets for
custom parameters).
And then have
\starttikzpicture[\filterusersetupvariable{mystyle}]
in the buffer.
My workaround so far is a copy of the filter setup (tikz/tikzThick), since we
have only a few different configurations.
Best regards, Hraban
""" % file: t-tikzfilter.tex
\startmodule[tikzfilter]
\usemodule[filter] % docs see https://github.com/adityam/filter
\def\TIKZTEMP{tikztemp} % name of folder for TikZ/buffer files
% normal setup
\startbuffer[tikz::before]
\environment env_world
\environment env_TikZ
\startTEXpage
\starttikzpicture
\stopbuffer
% setup for graphics with thicker lines
\startbuffer[tikzThick::before]
\environment env_world
\environment env_TikZ
\startTEXpage
\starttikzpicture[thick] % only difference
\stopbuffer
\startbuffer[tikz::after]
\stoptikzpicture
\stopTEXpage
\stopbuffer
\define[1]\ReadPDFFile% #1 is the name of the output file
{\ctxlua{thirddata.readpdffile("#1")}}
\startluacode
thirddata = thirddata or {}
local report_tikz = logs.reporter("tikzfilter")
-- create temp folder if missing
if not lfs.isdir("\TIKZTEMP") then
lfs.mkdir("\TIKZTEMP")
end
function thirddata.readpdffile(name)
-- name is like \TIKZTEMP/mainfile-temp-tikz-21.pdf
report_tikz("name='%s'", name) % doesn’t work
context("\\externalfigure[" .. name .. "]")
end
\stopluacode
\defineexternalfilter[tikz][
cache=yes,
% directory=\TIKZTEMP, % doesn’t work with ConTeXt
bufferbefore={tikz::before},
bufferafter={tikz::after},
readcommand=\ReadPDFFile,
output={\TIKZTEMP/\externalfilterbasefile.pdf},
filtercommand={mv \externalfilterbasefile.* \TIKZTEMP/ && cd \TIKZTEMP\space
&& context --batchmode --nodummy --once \externalfilterbasefile.tmp},
]
\defineexternalfilter[tikzThick][tikz][
bufferbefore={tikzThick::before},
]
\stopmodule
"""
""" % file: tikztest.tex
\usemodule[t-tikzfilter]
\usemodule[visual]
\starttext
\placefigure[margin,here][fig:example]{A box.}
{\vskip1in\noindent%
\starttikzThick[name=example0]
\draw[fill=black!10] (0,4.75) rectangle (1.5,-4.75);
\stoptikzThick
}
\fakewords{150}{200}
\processtikzThickfile{tests/example1.pgf}
\stoptext
"""
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