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