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%% TOPIC AND CONTENTS BOXES
%
% change this info string if making any custom modification
\ProvidesFile{sphinxlatexshadowbox.sty}[2021/01/27 sphinxShadowBox]
% Provides support for this output mark-up from Sphinx latex writer:
%
% - sphinxShadowBox (environment)
%
% Dependencies (they do not need to be defined at time of loading):
%
% - of course the various colour and dimension options handled via sphinx.sty
% - dimension register \spx@image@maxheight from sphinxlatexgraphics.sty
% - \savenotes/\spewnotes from sphinxpackagefootnote
% - \ifspx@inframed defined in sphinx.sty
%
% Requires:
\RequirePackage{framed}
% Again based on use of "framed.sty", this allows breakable framed boxes.
\long\def\spx@ShadowFBox#1{%
\leavevmode\begingroup
% first we frame the box #1
\setbox\@tempboxa
\hbox{\vrule\@width\sphinxshadowrule
\vbox{\hrule\@height\sphinxshadowrule
\kern\sphinxshadowsep
\hbox{\kern\sphinxshadowsep #1\kern\sphinxshadowsep}%
\kern\sphinxshadowsep
\hrule\@height\sphinxshadowrule}%
\vrule\@width\sphinxshadowrule}%
% Now we add the shadow, like \shadowbox from fancybox.sty would do
\dimen@\dimexpr.5\sphinxshadowrule+\sphinxshadowsize\relax
\hbox{\vbox{\offinterlineskip
\hbox{\copy\@tempboxa\kern-.5\sphinxshadowrule
% add shadow on right side
\lower\sphinxshadowsize
\hbox{\vrule\@height\ht\@tempboxa \@width\dimen@}%
}%
\kern-\dimen@ % shift back vertically to bottom of frame
% and add shadow at bottom
\moveright\sphinxshadowsize
\vbox{\hrule\@width\wd\@tempboxa \@height\dimen@}%
}%
% move left by the size of right shadow so shadow adds no width
\kern-\sphinxshadowsize
}%
\endgroup
}
% use framed.sty to allow page breaks in frame+shadow
% works well inside Lists and Quote-like environments
% produced by ``topic'' directive (or local contents)
% could nest if LaTeX writer authorized it
\newenvironment{sphinxShadowBox}
{\def\FrameCommand {\spx@ShadowFBox }%
\advance\spx@image@maxheight
-\dimexpr2\sphinxshadowrule
+2\sphinxshadowsep
+\sphinxshadowsize
+\baselineskip\relax
% configure framed.sty not to add extra vertical spacing
\ltx@ifundefined{OuterFrameSep}{}{\OuterFrameSep\z@skip}%
% the \trivlist will add the vertical spacing on top and bottom which is
% typical of center environment as used in Sphinx <= 1.4.1
% the \noindent has the effet of an extra blank line on top, to
% imitate closely the layout from Sphinx <= 1.4.1; the \FrameHeightAdjust
% will put top part of frame on this baseline.
\def\FrameHeightAdjust {\baselineskip}%
% use package footnote to handle footnotes
\savenotes
\trivlist\item\noindent
% use a minipage if we are already inside a framed environment
\ifspx@inframed\begin{minipage}{\linewidth}\fi
\MakeFramed {\spx@inframedtrue
% framed.sty puts into "\width" the added width (=2shadowsep+2shadowrule)
% adjust \hsize to what the contents must use
\advance\hsize-\width
% adjust LaTeX parameters to behave properly in indented/quoted contexts
\FrameRestore
% typeset the contents as in a minipage (Sphinx <= 1.4.1 used a minipage and
% itemize/enumerate are therein typeset more tightly, we want to keep
% that). We copy-paste from LaTeX source code but don't do a real minipage.
\@pboxswfalse
\let\@listdepth\@mplistdepth \@mplistdepth\z@
\@minipagerestore
\@setminipage
}%
}%
{% insert the "endminipage" code
\par\unskip
\@minipagefalse
\endMakeFramed
\ifspx@inframed\end{minipage}\fi
\endtrivlist
% output the stored footnotes
\spewnotes
}
\endinput
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