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authorKarl Berry <karl@freefriends.org>2013-02-03 23:17:51 +0000
committerKarl Berry <karl@freefriends.org>2013-02-03 23:17:51 +0000
commit8a8417f5836990019f938286ea9db43168c3c5ba (patch)
tree2c41544e3a5fea30ef5a23752c75422868a98f7a /Master/texmf-dist/tex/latex
parent876f15363e67e7d70dab70d53955b41185d78414 (diff)
underoverlap (3feb13)
git-svn-id: svn://tug.org/texlive/trunk@29019 c570f23f-e606-0410-a88d-b1316a301751
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+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% \iffalse %%%%
+% %
+% Copyright (c) 2013 - Michiel Helvensteijn - www.mhelvens.net %
+% %
+% http://latex-underoverlap.googlecode.com %
+% %
+% This work may be distributed and/or modified under the conditions %
+% of the LaTeX Project Public License, either version 1.3 of this %
+% license or (at your option) any later version. The latest version %
+% of this license is in http://www.latex-project.org/lppl.txt %
+% and version 1.3 or later is part of all distributions of LaTeX %
+% version 2005/12/01 or later. %
+% %
+% This work has the LPPL maintenance status `maintained'. %
+% %
+% The Current Maintainer of this work is Michiel Helvensteijn. %
+% %
+% This work consists of the files underoverlap.tex and underoverlap.sty. %
+% %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% \fi %%%%
+
+% \CheckSum{99}
+%
+% \CharacterTable
+% {Upper-case \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z
+% Lower-case \a\b\c\d\e\f\g\h\i\j\k\l\m\n\o\p\q\r\s\t\u\v\w\x\y\z
+% Digits \0\1\2\3\4\5\6\7\8\9
+% Exclamation \! Double quote \" Hash (number) \#
+% Dollar \$ Percent \% Ampersand \&
+% Acute accent \' Left paren \( Right paren \)
+% Asterisk \* Plus \+ Comma \,
+% Minus \- Point \. Solidus \/
+% Colon \: Semicolon \; Less than \<
+% Equals \= Greater than \> Question mark \?
+% Commercial at \@ Left bracket \[ Backslash \\
+% Right bracket \] Circumflex \^ Underscore \_
+% Grave accent \` Left brace \{ Vertical bar \|
+% Right brace \} Tilde \~}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% \subsection{Package Info} %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+% \begin{macrocode}
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesPackage{underoverlap}[2013/02/03 0.0.1-r1
+ construct for partly overlapping math decorations]
+% \end{macrocode}
+%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% \subsection{Packages} %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+% These are the packages we'll need.
+%
+% \begin{macrocode}
+\RequirePackage{etoolbox}
+\RequirePackage{mathtools}
+\RequirePackage{xparse}
+% \end{macrocode}
+%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% \subsection{Public Macros} %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+
+ %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+ % \begin{macro}{\newUOLdecorator}
+ % \marg{control sequence} \marg{definition}
+%%% \\\nopagebreak
+%
+% \noindent This defines the macro \meta{control sequence} as a
+% new decorator command that is capable of overlapping
+% with others.
+%
+% \begin{macrocode}
+\NewDocumentCommand{\newUOLdecorator}{mm}{%
+ \newcommand{#1}[1]{#2}%
+ \UOLaugment{#1}%
+}
+% \end{macrocode}
+%
+%\end{macro}%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+
+ %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+ % \begin{macro}{\UOLaugment}
+ % \marg{control sequence}
+%%% \\\nopagebreak
+%
+% \noindent This augments the macro \meta{control sequence}
+% to allow it to be overlapped.
+%
+% \begin{macrocode}
+\NewDocumentCommand{\UOLaugment}{m}{%
+ \cslet{\uol@oldcsname{#1}}{#1}%
+ \renewcommand{#1}{%
+ \ifbool{mmode}{%
+ \uol@construct{\csuse{\uol@oldcsname{#1}}}%
+ }{%
+ \csuse{\csuse{\uol@oldcsname{#1}}}%
+ }%
+ }%
+}
+% \end{macrocode}
+%
+%\end{macro}%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+
+ %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+ % \begin{macro}{\UOLunaugment}
+ % \marg{original cs}
+%%% \\\nopagebreak
+%
+% \noindent This unaugments the macro \meta{original cs} so
+% it will once again have its original meaning. This will
+% only make sense if you're previously augmented that command
+% with |\UOLaugment|.
+%
+% \begin{macrocode}
+\NewDocumentCommand{\UOLunaugment}{m}{%
+ \letcs{#1}{\uol@oldcsname{#1}}%
+}
+% \end{macrocode}
+%
+%\end{macro}%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% \subsection{Private Macros} %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+% The content inside a decoration has three parts:
+% \begin{itemize}
+% \item A `left' part that may overlap with the
+% previous construct.
+% \item A `middle' part that does not overlap.
+% \item A `right' part that overlaps with the next construct.
+% \end{itemize}
+%
+% \noindent Only the `middle' and `right' parts are passed as parameters
+% throughout most of the following commands. The `left' part is defined
+% by the previous \meta{UOL decorator} inside the |\uol@overlap@content|
+% macro.
+
+
+
+ %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+ % \begin{macro}{\uol@oldcsname}
+ % \marg{control sequence}
+%%% \\\nopagebreak
+%
+% \noindent Given a control sequence, this derives the corresponding
+% 'old csname' used by this package when augmenting it.
+%
+% \begin{macrocode}
+\newcommand{\uol@oldcsname}[1]{%
+ uol@old@\expandafter\@gobble\string#1%
+}
+% \end{macrocode}
+%
+%\end{macro}%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+
+ %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+ % \begin{macro}{\uol@construct}
+ % \marg{original macro}
+ % \marg{middle}
+ % \marg{right}
+%%% \\\nopagebreak
+%
+% \noindent Scans ahead for subscript or superscript.
+%
+% \begin{macrocode}
+\NewDocumentCommand{\uol@construct}{mmO{}}{%
+ \let\uol@sup\empty%
+ \let\uol@sub\empty%
+ \@ifnextchar^{%
+ \uol@construct@sup{#1}{#2}{#3}%
+ }{%
+ \@ifnextchar_%
+ {\uol@construct@sub {#1}{#2}{#3}}%
+ {\uol@construct@final{#1}{#2}{#3}}%
+ }%
+}
+% \end{macrocode}
+%
+%\end{macro}%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+
+ %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+ % \begin{macro}{\uol@construct@sup}
+ % \marg{original macro}
+ % \marg{middle}
+ % \marg{right}
+%%% \verb|^| \marg{superscript} \\\nopagebreak
+%
+% \noindent Processes superscript and scans ahead for subscript.
+%
+% \begin{macrocode}
+\def\uol@construct@sup#1#2#3^#4{%
+ \def\uol@sup{#4}%
+ \@ifnextchar_%
+ {\uol@construct@sup@sub{#1}{#2}{#3}}%
+ {\uol@construct@final {#1}{#2}{#3}}%
+}
+% \end{macrocode}
+%
+%\end{macro}%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+
+ %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+ % \begin{macro}{\uol@construct@sub}
+ % \marg{original macro}
+ % \marg{middle}
+ % \marg{right}
+%%% \verb|_| \marg{subscript} \\\nopagebreak
+%
+% \noindent Processes subscript and scans ahead for superscript.
+%
+% \begin{macrocode}
+\def\uol@construct@sub#1#2#3_#4{%
+ \def\uol@sub{#4}%
+ \@ifnextchar^%
+ {\uol@construct@sub@sup{#1}{#2}{#3}}%
+ {\uol@construct@final {#1}{#2}{#3}}%
+}
+% \end{macrocode}
+%
+%\end{macro}%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+
+ %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+ % \begin{macro}{\uol@construct@sub@sup}
+ % \marg{original macro}
+ % \marg{middle}
+ % \marg{right}
+%%% \verb|^| \marg{superscript} \\\nopagebreak
+%
+% \noindent Processes superscript and calls the 'final' command.
+%
+% \begin{macrocode}
+\def\uol@construct@sub@sup#1#2#3^#4{%
+ \def\uol@sup{#4}%
+ \uol@construct@final{#1}{#2}{#3}%
+}
+% \end{macrocode}
+%
+%\end{macro}%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+
+ %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+ % \begin{macro}{\uol@construct@sup@sub}
+ % \marg{original macro}
+ % \marg{middle}
+ % \marg{right}
+%%% \verb|_| \marg{subscript} \\\nopagebreak
+%
+% \noindent Processes subscript and calls the 'final' command.
+%
+% \begin{macrocode}
+\def\uol@construct@sup@sub#1#2#3_#4{%
+ \def\uol@sub{#4}%
+ \uol@construct@final{#1}{#2}{#3}%
+}
+% \end{macrocode}
+%
+%\end{macro}%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+
+ %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%% \begin{macro}{\uol@overlap@content}\nopagebreak
+%
+% \noindent This macro stores the 'overlapped' part of the
+% math content between two augmented macros. We make sure
+% that it is empty at the beginning of a new equation.
+%
+% \begin{macrocode}
+\let\uol@overlap@content\@empty
+% \end{macrocode}
+%
+%\end{macro}%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+
+ %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+ % \begin{macro}{\uol@construct@final}
+ % \marg{original macro}
+ % \marg{middle}
+ % \marg{right}
+%%% \\\nopagebreak
+%
+% \noindent This command typesets the result and reserves
+% space for the overlap.
+%
+% \begin{macrocode}
+\newcommand{\uol@construct@final}[3]{
+% \end{macrocode}
+%
+% The following block will set the visible ink of the
+% decoration without visibly setting the content itself
+% and without moving our current position (using |\mathrlap|).
+%
+% \begin{macrocode}
+ \mathrlap{%
+% \end{macrocode}
+%
+% We do several things next. Using |\mathop| we allow any
+% subscript and superscript to be positioned directly under
+% or over the construct, even if the original command doesn't
+% natively support it.
+%
+% We call the original command with |#1| and make it initially
+% invisible using |\phantom|.
+%
+% Using braces we provide the spacing most likely to be
+% satisfactory. If it's not, the user should manually
+% correct with math-spacing commands.
+%
+% \begin{macrocode}
+ \displaystyle%
+ \mathop{#1{\phantom{%
+ {\uol@overlap@content}{{}#2{}}{#3}%
+ }}}%
+% \end{macrocode}
+%
+% The following two lines set the subscript and superscript
+% that we collected during the previous phases.
+%
+% \begin{macrocode}
+ ^{\mathclap{\uol@sup}}%
+ _{\mathclap{\uol@sub}}%
+% \end{macrocode}
+% \uninteresting\begin{macrocode}
+ }%
+% \end{macrocode}
+%
+% Next, we optionally print the debug-shadow (disabled right now).
+%
+% \begin{macrocode}
+ %\mathrlap{\textcolor{green}{\uol@overlap@content#2#3}}%
+% \end{macrocode}
+%
+% The following code visibly typesets the `left' and `middle' parts of the content.
+%
+% \begin{macrocode}
+ {\uol@overlap@content}{{}#2{}}%
+% \end{macrocode}
+%
+% We assume that the `right' part (that overlaps with the next construct)
+% will be visibly set by the following command, which will be \emph{its}
+% `left' part. We store it in the |\uol@overlap@content| macro now.
+%
+% \begin{macrocode}
+ \def\uol@overlap@content{#3}%
+% \end{macrocode}
+% \uninteresting\begin{macrocode}
+}
+% \end{macrocode}
+%
+%\end{macro}%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+
+ %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+ % \makeatletter\newcount\c@CodelineNoBackup
+ % \c@CodelineNoBackup=\c@CodelineNo
+ % \begin{macro}{\UOLoverbrace} \advance\c@CodelineNo\@ne
+ % \begin{macro}{\UOLunderbrace}\advance\c@CodelineNo\@ne
+ % \begin{macro}{\UOLoverline} \advance\c@CodelineNo\@ne
+ % \begin{macro}{\UOLunderline} \c@CodelineNo=\c@CodelineNoBackup
+%%% \makeatother\ \\[-2\baselineskip]
+%
+% \noindent We predefine the following commands in a
+% straightforward way:
+%
+% \begin{macrocode}
+\newUOLdecorator{\UOLoverbrace} {\overbrace {#1}}
+\newUOLdecorator{\UOLunderbrace}{\underbrace{#1}}
+\newUOLdecorator{\UOLoverline} {\overline {#1}}
+\newUOLdecorator{\UOLunderline} {\underline {#1}}
+% \end{macrocode}
+%
+%\end{macro}\end{macro}\end{macro}\end{macro}%%%%%%%%%%%%%%%
+