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docs/build/latex/sphinxlatexshadowbox.sty

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-%% TOPIC AND CONTENTS BOXES
-%
-% change this info string if making any custom modification
-\ProvidesPackage{sphinxlatexshadowbox}[2024/07/28 v8.1.0 sphinxShadowBox]
-
-% Provides support for this output mark-up from Sphinx latex writer:
-%
-% - Environments: sphinxtopic, sphinxcontents, and sphinxsidebar.
-%
-%   These wrappers replace at 8.1.0 former direct use of sphinxShadowBox
-%   environment which did not allow separate styling.
-%
-% - Commands: \sphinxstyletopictitle, \sphinxstylecontentstitle, and
-%   \sphinxstylesidebartitle.
-%
-%   At 8.1.0 they default to use \sphinxdotitlerow whose definiion is done in
-%   sphinxlatexadmonitions.sty.  There is also  \sphinxstylesidebarsubtitle
-%   which does not use \sphinxdotitlerow.
-%
-% 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.sty
-% - \ifspx@inframed defined in sphinx.sty
-% - \sphinxdotitlerow from sphinxlatexadmonitions.sty
-% - \spx@boxes@fcolorbox@setup from sphinxpackageboxes.sty
-%
-\RequirePackage{framed}
-% Those are required either before or after by sphinx.sty anyhow, but for
-% clarity we list them here:
-\RequirePackage{sphinxlatexgraphics}
-\RequirePackage{sphinxpackagefootnote}
-\RequirePackage{sphinxlatexadmonitions}
-\RequirePackage{sphinxpackageboxes}
-
-% At 5.1.0 the code formerly here in a definition of \spx@ShadowFBox has been
-% refactored to hand over to a more powerful \spx@boxes@fcolorbox provided by
-% file sphinxpackageboxes.sty, it can draw rounded corners and add a background
-% color.
-
-% At 6.2.0, \spx@ShadowFBox is so much simplified that it is now not
-% separately defined but directly incorporated into the \FrameCommand
-% definition done by sphinxShadowBox environment below.
-
-% Use framed.sty \MakeFramed/\endMakeFramed to allow page breaks for topic
-% boxes.  Originally Sphinx used \shadowbox from fancybox.sty but it did not
-% allow pagebreaks (which was problematic for "contents" directive if there
-% are many subsections).
-%
-% Docutils does not allow topic to be nested within topics or other body
-% elements.  But the LaTeX code here does allow it:
-%
-% - a topic inside another topic would be rendered in a minipage (thus not
-%   allowing pagebreaks).  Its external frame would adapt perfectly to
-%   the *current (smaller) width for text*.
-%
-% - a topic inside (nested) lists or quote environments would have its frame
-%   take the *full width* of the page, but its text contents on the other hand
-%   would obey exactly the current indentation plus inner separation.  This is
-%   in contrast with the framing used for literal blocks, also based, but in a
-%   more sophisticated way on usage of \MakeFramed/\endMakeFramed, and
-%   adjusting to current text indentation.
-%
-% At 8.1.0, sphinxShadowBox takes an optional argument #1 and uses it as
-% \spx@boxes@fcolorbox@setup{#1} rather than \spx@boxes@fcolorbox@setup{topic}.
-% Some hesitation whether to move this line to newly added sphinxtopic,
-% sphinxcontents and sphinxsidebar environmments.  But anyhow the environment
-% also requires later knowing a few more things: sphinx<type>TextColor and
-% spx@<type>@texextras.
-%
-% The #1 defaulting to topic must be such that all parameters expected by
-% \spx@boxes@fcolorbox@setup actually do exist, see CSS options in sphinx.sty
-% which is what defines them for contents, topic, and sidebar.
-%
-% Fortunately the #1 is not needed in \end{sphinxShadowBox} so we don't have
-% to work around a LaTeX conception bug that such #1 can not be used as is in
-% the definition of the \end part of an environment.
-%
-% MEMO: the "shadow" is not really drawn directly by this environment but
-% indirectly via the configuration which is passed over to \spx@boxes@fcolorbox,
-% which is the macro creating frame and (perhaps but not necessarily) a shadow.
-\newenvironment{sphinxShadowBox}[1][topic]%
-  {%
-   \spx@boxes@fcolorbox@setup{#1}%
-   % we will use the dimen registers from sphinxpackageboxes.sty which now hold
-   % the values from options related to topic/contents
-   % MEMO: \spx@boxes@fcolorbox creates an \hbox but does not quit vertical
-   %       mode; but in context of framed.sty's \FrameCommand TeX is already
-   %       in restricted horizontal mode, so no need for a \leavevmode here.
-   \def\FrameCommand {\spx@boxes@fcolorbox}%
-   % 6.2.0 adds support for div.topic_box-decoration-break=slice.
-   % (it is yet undecided if slice style should inhibit a bottom shadow)
-   \@nameuse{ifspx@#1@border@open}%
-     \def\FirstFrameCommand
-               {\spx@boxes@fcolorbox@setup@openbottom\FrameCommand}%
-     \def\MidFrameCommand
-               {\spx@boxes@fcolorbox@setup@openboth  \FrameCommand}%
-     \def\LastFrameCommand
-               {\spx@boxes@fcolorbox@setup@opentop   \FrameCommand}%
-   \fi
-   \advance\spx@image@maxheight
-   -\dimexpr\spx@boxes@border@top+\spx@boxes@border@bottom
-           +\spx@boxes@padding@top+\spx@boxes@padding@bottom
-           +\ifdim\spx@boxes@shadow@yoffset<\z@-\fi\spx@boxes@shadow@yoffset
-           +\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 (padding+border widths)
-    % 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
-    }%
-    \color@begingroup % workaround upstream framed.sty bug
-    \@nameuse{ifspx@#1@withtextcolor}%
-      \color{sphinx#1TextColor}%
-    \fi
-    \@nameuse{spx@#1@TeXextras}%
-  }%
-  {% insert the "endminipage" code
-    \par\unskip
-    \color@endgroup   % matches the \color@begingroup
-    \@minipagefalse
-   \endMakeFramed
-     \ifspx@inframed\end{minipage}\fi
-   \endtrivlist
-   % output the stored footnotes
-   \spewnotes
-  }
-
-% 8.1.0
-\newenvironment{sphinxtopic}
-               {\begin{sphinxShadowBox}[topic]}{\end{sphinxShadowBox}}
-\newenvironment{sphinxcontents}
-               {\begin{sphinxShadowBox}[contents]}{\end{sphinxShadowBox}}
-% Arguably sphinxsidebar should rather use a wrapfig or similar environment
-% but this is so dysfunctional in LaTeX (except for self-written documents)
-% so we prefer to not venture into such a potential quagmire and keep the
-% legacy rendering using a full width display.
-\newenvironment{sphinxsidebar}
-               {\begin{sphinxShadowBox}[sidebar]}{\end{sphinxShadowBox}}
-
-% TODO: decide if this should be in sphinxlatexstyletext.sty rather
-%
-% 8.1.0 styles topic/contents/sidebar with a title row, too.
-% Prior to 8.1.0, definitions use \protected\def but there does not seem
-% to be any reason so back to \newcommand.
-\newcommand*\sphinxstyletopictitle[1]{\sphinxdotitlerow{topic}{#1}}
-\newcommand*\sphinxstylecontentstitle[1]{\sphinxdotitlerow{contents}{#1}}
-\newcommand*\sphinxstylesidebartitle[1]{\sphinxdotitlerow{sidebar}{#1}}
-% No default color background for subtitle.  The contents next are injected by
-% LaTeX writer after a blank line in source hence will start a new paragrpah.
-% The \sphinxAtStartPar here is only for coherence with other text paragraphs,
-% but does not have serious necessity (its general role is to allow hyphenation
-% for first word in narrow table cells).
-\newcommand*\sphinxstylesidebarsubtitle[1]{\sphinxAtStartPar\textbf{#1}}
-
-\endinput