pgf-cmykshadings — Support for CMYK and grayscale shadings in PGF/TikZ

The pgf-cmykshadings package provides support for CMYK and grayscale shadings for the pgf package. By default pgf only supports RGB shadings. pgf-cmykshadings attempts to produce shadings consistent with the currently selected xcolor colour model. The rgb, cmyk, and gray colour models from the xcolor package are supported.

Installation from TeXLive or MiKTeX

pgf-cmykshadings is in TeXLive and MiKTeX and can be installed in the usual way through your distribution. e.g., in TeXLive by running:

tlmgr install pgf-cmykshadings

Installation from CTAN

Download and unpack pgf-cmykshadings.zip from CTAN at https://ctan.org/pkg/pgf-cmykshadings

Change to the pgf-cmykshadings directory, then run:

tex pgf-cmykshadings.ins

to generate the style file (pgf-cmykshadigns.sty) and driver files (pgfsys-cmykshadings-*.def).

Copy these generated files to $TEXMFHOME/tex/latex/pgf-cmykshadings/ and pgf-cmykshadings.pdf to $TEXMFHOME/doc/latex/pgf-cmykshadings/.

You can find $TEXMFHOME by running:

kpsewhich -var-value=TEXMFHOME

Installation from Git Source

pgf-cmykshadings uses the l3build system.

Clone the git repository using:

git clone https://github.com/dcpurton/pgf-cmykshadings.git

Change to the pgf-cmykshadings directory, and then the package and documentation can be installed by running:

l3build install --full

Licence

Copyright (c) 2018 David Purton <dcpurton@marshwiggle.net>

This work may be distributed and/or modified under the conditions of
the LaTeX Project Public License, either version 1.3c of this license
or (at your option) any later version. The latest version of this
license is in
   http://www.latex-project.org/lppl.txt
and version 1.3c or later is part of all distributions of LaTeX
version 2005/12/01 or later.

This work is "maintained" (as per the LPPL maintenance status)
by David Purton.

This work consists of the files pgf-cmykshadings.ins,
pgf-cmykshadings.dtx, README.md, and the derived files
  - pgf-cmykshadings.sty
  - pgfsys-cmykshadings-pdftex.def
  - pgfsys-cmykshadings-xetex.def
  - pgfsys-cmykshadings-luatex.def
  - pgfsys-cmykshadings-dvipdfmx.def
  - pgfsys-cmykshadings-dvipdfm.def
  - pgfsys-cmykshadings-dvips.def
  - pgfsys-cmykshadings-textures.def
  - pgfsys-cmykshadings-vtex.def
  - pgfsys-cmykshadings-common-postscript.def
  - pgf-cmykshadings.pdf


Substantial parts of the code for this package are taken from the pgf package
file pgfcoreshade.code.tex, along with the driver files pgfsys-*.def, copyright
(c) 2006 Till Tantau and then slightly modified to support CMYK and grayscale
shadings.