snp-lab-code/sphinxlatexadmonitions.sty

%% NOTICES AND ADMONITIONS
%
% change this info string if making any custom modification
\ProvidesFile{sphinxlatexadmonitions.sty}[2021/01/27 admonitions]

% Provides support for this output mark-up from Sphinx latex writer:
%
% - sphinxadmonition (environment)
%   This is a dispatch supporting
%
%   - note, hint, important, tip                 (via sphinxlightbox)
%   - warning, caution, attention, danger, error (via sphinxheavybox)
%
%   Each sphinx<notice name> environment can be redefined by user.
%   The defaults are customizable via various colour and dimension
%   settings, cf sphinx docs (latex customization).
%
% Requires:
\RequirePackage{framed}% used by sphinxheavybox
%
% Dependencies (they do not need to be defined at time of loading):
% - of course the various colour and dimension options handled via sphinx.sty
% - \sphinxstrong (for sphinxlightbox and sphinxheavybox)
% - dimension register \spx@image@maxheight from sphinxlatexgraphics.sty
% - \savenotes/\spewnotes from sphinxpackagefootnote (for sphinxheavybox)

% Provides: (also in sphinxlatexliterals.sty)
\providecommand*\sphinxvspacefixafterfrenchlists{%
   \ifvmode\ifdim\lastskip<\z@ \vskip\parskip\fi\else\par\fi
}

% Some are quite plain
% the spx@notice@bordercolor etc are set in the sphinxadmonition environment
\newenvironment{sphinxlightbox}{%
  \par
  \noindent{\color{spx@notice@bordercolor}%
            \rule{\linewidth}{\spx@notice@border}}\par\nobreak
  {\parskip\z@skip\noindent}%
  }
  {%
  % counteract previous possible negative skip (French lists!):
  % (we can't cancel that any earlier \vskip introduced a potential pagebreak)
  \sphinxvspacefixafterfrenchlists
  \nobreak\vbox{\noindent\kern\@totalleftmargin
      {\color{spx@notice@bordercolor}%
       \rule[\dimexpr.4\baselineskip-\spx@notice@border\relax]
             {\linewidth}{\spx@notice@border}}\hss}\allowbreak
  }% end of sphinxlightbox environment definition
% may be renewenvironment'd by user for complete customization
\newenvironment{sphinxnote}[1]
  {\begin{sphinxlightbox}\sphinxstrong{#1} }{\end{sphinxlightbox}}
\newenvironment{sphinxhint}[1]
  {\begin{sphinxlightbox}\sphinxstrong{#1} }{\end{sphinxlightbox}}
\newenvironment{sphinximportant}[1]
  {\begin{sphinxlightbox}\sphinxstrong{#1} }{\end{sphinxlightbox}}
\newenvironment{sphinxtip}[1]
  {\begin{sphinxlightbox}\sphinxstrong{#1} }{\end{sphinxlightbox}}
% or just use the package options
% these are needed for common handling by notice environment of lightbox
% and heavybox but they are  currently not used by lightbox environment
% and there is consequently no corresponding package option
\definecolor{sphinxnoteBgColor}{rgb}{1,1,1}
\definecolor{sphinxhintBgColor}{rgb}{1,1,1}
\definecolor{sphinximportantBgColor}{rgb}{1,1,1}
\definecolor{sphinxtipBgColor}{rgb}{1,1,1}

% Others get more distinction
% Code adapted from framed.sty's "snugshade" environment.
% Nesting works (inner frames do not allow page breaks).
\newenvironment{sphinxheavybox}{\par
   \setlength{\FrameRule}{\spx@notice@border}%
   \setlength{\FrameSep}{\dimexpr.6\baselineskip-\FrameRule\relax}
   \advance\spx@image@maxheight
   -\dimexpr2\FrameRule
           +2\FrameSep
           +\baselineskip\relax % will happen again if nested, needed indeed!
   % configure framed.sty's parameters to obtain same vertical spacing
   % as for "light" boxes. We need for this to manually insert parskip glue and
   % revert a skip done by framed before the frame.
    \ltx@ifundefined{OuterFrameSep}{}{\OuterFrameSep\z@skip}%
    \vspace{\FrameHeightAdjust}
   % copied/adapted from framed.sty's snugshade
   \def\FrameCommand##1{\hskip\@totalleftmargin
       \fboxsep\FrameSep \fboxrule\FrameRule
       \fcolorbox{spx@notice@bordercolor}{spx@notice@bgcolor}{##1}%
       \hskip-\linewidth \hskip-\@totalleftmargin \hskip\columnwidth}%
   \savenotes
   % use a minipage if we are already inside a framed environment
   \ifspx@inframed
       \noindent\begin{minipage}{\linewidth}
   \else
       % handle case where notice is first thing in a list item (or is quoted)
       \if@inlabel
        \noindent\par\vspace{-\baselineskip}
       \else
        \vspace{\parskip}
       \fi
   \fi
   \MakeFramed {\spx@inframedtrue
     \advance\hsize-\width \@totalleftmargin\z@ \linewidth\hsize
     % minipage initialization copied from LaTeX source code.
     \@pboxswfalse
     \let\@listdepth\@mplistdepth \@mplistdepth\z@
     \@minipagerestore
     \@setminipage }%
   }
   {%
   \par\unskip
   \@minipagefalse
   \endMakeFramed
   \ifspx@inframed\end{minipage}\fi
   % set footnotes at bottom of page
   \spewnotes
   % arrange for similar spacing below frame as for "light" boxes.
   \vskip .4\baselineskip
   }% end of sphinxheavybox environment definition
% may be renewenvironment'd by user for complete customization
\newenvironment{sphinxwarning}[1]
  {\begin{sphinxheavybox}\sphinxstrong{#1} }{\end{sphinxheavybox}}
\newenvironment{sphinxcaution}[1]
  {\begin{sphinxheavybox}\sphinxstrong{#1} }{\end{sphinxheavybox}}
\newenvironment{sphinxattention}[1]
  {\begin{sphinxheavybox}\sphinxstrong{#1} }{\end{sphinxheavybox}}
\newenvironment{sphinxdanger}[1]
  {\begin{sphinxheavybox}\sphinxstrong{#1} }{\end{sphinxheavybox}}
\newenvironment{sphinxerror}[1]
  {\begin{sphinxheavybox}\sphinxstrong{#1} }{\end{sphinxheavybox}}
% or just use package options

% the \colorlet of xcolor (if at all loaded) is overkill for our use case
\newcommand{\sphinxcolorlet}[2]
    {\expandafter\let\csname\@backslashchar color@#1\expandafter\endcsname
                     \csname\@backslashchar color@#2\endcsname }

% the main dispatch for all types of notices
\newenvironment{sphinxadmonition}[2]{% #1=type, #2=heading
  % can't use #1 directly in definition of end part
  \def\spx@noticetype {#1}%
  % set parameters of heavybox/lightbox
  \sphinxcolorlet{spx@notice@bordercolor}{sphinx#1BorderColor}%
  \sphinxcolorlet{spx@notice@bgcolor}{sphinx#1BgColor}%
  \spx@notice@border \dimexpr\csname spx@opt@#1border\endcsname\relax
  % start specific environment, passing the heading as argument
  \begin{sphinx#1}{#2}}
  % workaround some LaTeX "feature" of \end command
 {\edef\spx@temp{\noexpand\end{sphinx\spx@noticetype}}\spx@temp}

\endinput