baposter.cls - problems with \usetikzlibrary{snakes}

Question

I would like to create a poster using baposter.cls. I downloaded the example one finds at https://www.latextemplates.com/template/baposter-portrait-poster. Using pdflatex to compile the example I get the following error:

/usr/share/texlive/texmf-dist/tex/generic/pgf/frontendlayer/tikz/libraries/tikzlibrarysnakes.code.tex:14: Snakes have been superseded by decorations. Please use thedecoration libraries instead of the snakes library on input line 14.

Any idea how to fix this problem?

Answer 1

Since the baposter class isn't really actively maintained, AFAIK, you really have two options: change your local version of the class or use a different poster class. If you are not using the coils or triangles border options in your poster (and who would? :) ) then it suffices to delete line line 159 of the class which loads the snakes library. But if you want to use them, you should replace that line with the following:

\usetikzlibrary{decorations.pathmorphing,decorations.shapes}

Then to use the coils or triangles borders, then you need to change the following commands:

\newcommand{\baposter@box@drawborder@coils}[1]{
  \draw[color=#1,segment amplitude=0.35em,segment length=0.4em,snake=coil] \baposterBoxGetShape;%
}
\newcommand{\baposter@box@drawborder@triangles}[1]{
  \draw[color=#1,segment amplitude=0.2em,segment length=0.4em,snake=triangles] \baposterBoxGetShape;%
}

to

\newcommand{\baposter@box@drawborder@coils}[1]{
  \draw[color=#1,decorate,decoration={coil,amplitude=0.35em,segment length=0.4em,}] \baposterBoxGetShape;%
}
\newcommand{\baposter@box@drawborder@triangles}[1]{
  \draw[color=#1,decorate,decoration={triangles,segment length=0.4em,shape height=.4em,shape width=.2em}] \baposterBoxGetShape;
}