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40 lines
1.3 KiB
TeX
40 lines
1.3 KiB
TeX
%
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% Here we determine the style of the syntax diagrams.
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%
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% Define a 'boxing' environment
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\newenvironment{diagram}[2]%
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{\begin{quote}\rule{0.5pt}{1ex}%
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\rule[1ex]{\linewidth}{0.5pt}%
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\rule{0.5pt}{1ex}\\[-0.5ex]%
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\textbf{#1}\\[-0.5ex]}%
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{\rule{0.5pt}{1ex}%
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\rule{\linewidth}{0.5pt}%
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\rule{0.5pt}{1ex}\end{quote}}
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%\newenvironment{diagram}[2]{}{}
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% Define mysyntdiag for my style of diagrams
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\makeatletter
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% Under Tex4HT, the diagrams are rendered as pictures.
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\@ifpackageloaded{tex4ht}{%
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\newenvironment{mysyntdiag}%
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{\HCode{<BR/>}\Picture*{}\begin{syntdiag}\setlength{\sdmidskip}{.5em}\sffamily\sloppy}%
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{\end{syntdiag}\EndPicture\HCode{<BR/>}}%
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}{%
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\newenvironment{mysyntdiag}%
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{\begin{syntdiag}\setlength{\sdmidskip}{.5em}\sffamily\sloppy}%
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{\end{syntdiag}}%
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}%
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\makeatother
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% Finally, define a combination of the above two.
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\newenvironment{psyntax}[2]{\begin{diagram}{#1}{#2}\begin{mysyntdiag}}%
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{\end{mysyntdiag}\end{diagram}}
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% Redefine the styles used in the diagram.
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\latex{\renewcommand{\litleft}{\bfseries\ }
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\renewcommand{\ulitleft}{\bfseries\ }
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\renewcommand{\syntleft}{\ }
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\renewcommand{\litright}{\ \rule[.5ex]{.5em}{2\sdrulewidth}}
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\renewcommand{\ulitright}{\ \rule[.5ex]{.5em}{2\sdrulewidth}}
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\renewcommand{\syntright}{\ \rule[.5ex]{.5em}{2\sdrulewidth}}
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}
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% Finally, a referencing command.
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\newcommand{\seesy}[1]{see diagram}
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% |