%--------------------------------------------
%
% Package pgfplots
%
% Provides a user-friendly interface to create function plots (normal
% plots, semi-logplots and double-logplots).
%
% It is based on Till Tantau's PGF package.
%
% Copyright 2007/2008/2009 by Christian Feuersänger.
%
% This program is free software: you can redistribute it and/or modify
% it under the terms of the GNU General Public License as published by
% the Free Software Foundation, either version 3 of the License, or
% (at your option) any later version.
%
% This program is distributed in the hope that it will be useful,
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
% GNU General Public License for more details.
%
% You should have received a copy of the GNU General Public License
% along with this program. If not, see <
http://www.gnu.org/licenses/>.
%
%--------------------------------------------
% This file provides an interface to the
% pgfmanual.prettyprint.code.tex thing -- it allows to
% *generate pdf crossrefs inside of codeexamples automatically*
% without any user input.
%
% Thus, you write
% \begin{codeexample}[]
% \begin{tikzpicture}[options]
% \end{tikzpicture}
% \end{codeexample}
% and pdf cross references to the definitions of 'tikzpicture'
% and any options will be generated automatically.
%
% Furthermore, pdf cross references will be generated for everything
% within vertical bars, |....|.
%
%
%
%
%
% The only necessary thing is that \pgfmanualpdflabel has been called
% for every (fully qualified) key, control sequence, environment or
% whatever.
\newif\ifpgfmanualpdfwarnings
\pgfmanualpdfwarningstrue
\newif\ifpgfmanualshowlabels
\pgfkeys{%
/codeexample/prettyprint/cs arguments/pgfkeys/.initial=1,
/codeexample/prettyprint/cs/pgfkeys/.code 2 args={\pgfmanualpdfref{#1}{#1}\{\pgfmanualprettyprintpgfkeys{#2}\pgfmanualclosebrace},
%
/codeexample/prettyprint/autolinks/.style={%
/codeexample/prettyprint/key name/.code={\pgfmanualpdfref{##1}{##1}},
/codeexample/prettyprint/key name with handler/.code 2 args={\pgfmanualpdfref{##1}{##1}/\pgfmanualpdfref{/handlers/##2}{##2}},
/codeexample/prettyprint/key value display only/.code={\pgfmanualprettyprintcode{##1}},
/codeexample/prettyprint/cs/.code={\pgfmanualpdfref{##1}{##1}},
/codeexample/prettyprint/cs with args/.code 2 args={\pgfmanualpdfref{##1}{##1}\{\pgfmanualprettyprintcode{##2}\pgfmanualclosebrace},
/codeexample/prettyprint/cs arguments/pgfkeys/.initial=1,
/codeexample/prettyprint/cs/pgfkeys/.code 2 args={\pgfmanualpdfref{##1}{##1}\{\pgfmanualprettyprintpgfkeys{##2}\pgfmanualclosebrace},
/codeexample/prettyprint/cs arguments/begin/.initial=1,
/codeexample/prettyprint/cs/begin/.code 2 args={##1\{\pgfmanualpdfref{##2}{##2}\pgfmanualclosebrace},
/codeexample/prettyprint/cs arguments/end/.initial=1,
/codeexample/prettyprint/cs/end/.code 2 args={##1\{\pgfmanualpdfref{##2}{##2}\pgfmanualclosebrace},
/codeexample/prettyprint/word/.code={\begingroup\pgfkeyssetvalue{/pdflinks/search key prefixes in}{}\pgfmanualpdfref{##1}{##1}\endgroup},
/codeexample/prettyprint/point/.code={##1},%
/codeexample/prettyprint/point with cs/.code 2 args={(\pgfmanualpdfref{##1}{##1}:##2},%
},%
/codeexample/prettyprint/autolinks,
}%
\pgfkeys{
%
% Enables or disables the parsing of codeexamples.
/pdflinks/codeexample links/.is if=pgfmanualprettyenabled,
/pdflinks/codeexample links/.default=true,
%
% whenever an unqualified key is found, the following key prefix
% list is tried to find a match.
/pdflinks/search key prefixes in/.initial={/tikz/,/pgf/},
%
% Enables or disables warnings for failed auto links:
/pdflinks/warnings/.is if=pgfmanualpdfwarnings,
/pdflinks/warnings/.default=true,
%
% Shows the autogenerated labels. This is useful to check if the
% 'search key prefixes in' worked as it ought to.
/pdflinks/show labels/.is if=pgfmanualshowlabels,
/pdflinks/show labels/.default=true,
/pdflinks/show labels=false,
% will be invoked with '#1' set to the generated label.
/pdflinks/show labels code/.code={
\hbox to 0pt{%
\vbox to 0pt{\hsize=0pt
\vskip-\baselineskip
\hbox to \hsize{%
\hss
{\footnotesize\ttfamily\textcolor{red}{#1}}%
\hss
}%
\vss
}%
\vbox to 0pt{\hsize=0pt
\vss
\hbox to \hsize{%
\hss
{\footnotesize\ttfamily\textcolor{red}{$\vert$}}%
\hss
}%
}%
\vsize=0pt
}%
},
%
% the link prefix written to the pdf file:
/pdflinks/internal link prefix/.initial=pgf,
}
\gdef\pgfmanualpdf@installreplacements{%
\def\marg##1{{##1}}%
\def\oarg##1{[##1]}%
\def\meta##1{<##1>}%
\def\x{x}%
\def\textbackslash{<CS>}%
\def\\{\textbackslash}%
\def\space{:}%
\edef\ {\space}%
\edef\#{}%
\def\printanat{@}%
\def\protect{}%
\def\textasciicircum{o}%
\expandafter\edef\pgfmanual@verb@activebar{\pgfmanual@verb@bar}%
}%
% Defines a new pdf cross ref label for use with \pgfmanualpdfref.
%
% Usage:
% \pgfmanualpdflabel{<label>}{<text>}
% #1: the label.
% The text #2 will be shown in the resulting pdf (if it is not empty).
%
% There is also support for catcode changes if <label> contains
% something which shouldn't be written as-is into .aux files:
% \pgfmanualpdflabel[\catcode`\|=12 ]{|-}{}
% -> this will write
% \begingroup \catcode `\|=12
% <code to deal with the label |- >
% \endgroup
% into the .aux file.
%
\def\pgfmanualpdflabel{\pgfutil@ifnextchar[{\pgfmanualpdflabel@opt}{\pgfmanualpdflabel@opt[]}}%
\def\pgfmanualpdflabel@opt[#1]#2#3{%
\begingroup
%
\def\pgfmanualpdf@catcode{#1}%
\pgfmanualpdf@catcode
%
\pgfmanualpdflabel@generate{#2}{#3}%
%
% this is pgfplots-specific: pgfplots supports generic styles which
% contain '\x' where '\x' iterates through 'x,y,z'.
\pgfutil@in@\x{#2}%
\ifpgfutil@in@
\def\x{y}%
\pgfmanualpdflabel@generate{#2}{#3}%
\def\x{z}%
\pgfmanualpdflabel@generate{#2}{#3}%
\fi
\endgroup
}%
\def\pgfmanualpdflabel@generate#1#2{%
\pgfmanual@handlespeciallabeltokens@in{#1}%
%
\def\pgfmanualpdflabel@generateone{0}%
\pgfutil@ifundefined{pgfd@lbl@\pgfmanualpdflabel@@}{%
% ok, no such label is known.
\def\pgfmanualpdflabel@generateone{1}%
}{%
\if\csname pgfd@lbl@\pgfmanualpdflabel@@\endcsname a% "a"ux
% ah, it is "just" known from a previous run, but there is
% no code in the pdf! Write it!
\def\pgfmanualpdflabel@generateone{1}%
\else
% ok, we already wrote one before. Skip.
\fi
}%
\if\pgfmanualpdflabel@generateone1%
\ifpgfmanualshowlabels
\pgfkeysvalueof{/pdflinks/show labels code/.@cmd}{\pgfmanualpdflabel@@}\pgfeov
\fi
%
\if@filesw
\ifx\pgfmanualpdf@catcode\pgfutil@empty
\else
\toks0=\expandafter{\pgfmanualpdf@catcode}%
\immediate\write\@auxout{%
\noexpand\begingroup
\the\toks0
}%
\fi
\immediate\write\@auxout{%
\noexpand\expandafter\noexpand\gdef
\noexpand\csname pgfd@lbl@\pgfmanualpdflabel@@\noexpand\endcsname{a}% a = known in "a"ux file
}%
\ifx\pgfmanualpdf@catcode\pgfutil@empty
\else
\immediate\write\@auxout{\noexpand\endgroup}%
\fi
\fi
\expandafter\gdef\csname pgfd@lbl@\pgfmanualpdflabel@@\endcsname{w}% 1. remember the label AND remember that we "w"rote it into the pdf.
\edef\pgfmanualpdflabel@@{\pgfkeysvalueof{/pdflinks/internal link prefix}.\pgfmanualpdflabel@@}%
\expandafter\hypertarget\expandafter{\pgfmanualpdflabel@@}{#2}%
\else
#2%
\fi
}%
% A pdf reference to label `#1' with (TeX) text `#2'.
% @see also \verbpdfref.
\def\pgfmanualpdfref#1#2{%
\begingroup
\pgfmanual@handlespeciallabeltokens@in{#1}%
%
\ifcsname pgfd@lbl@\pgfmanualpdflabel@@\endcsname
\else
\global\let\pgfmanual@glob=\pgfmanualpdflabel@@
\def\pgfmanual@tempa{\foreach \prefix in }%
\pgfkeysgetvalue{/pdflinks/search key prefixes in}\pgfmanual@tempb
\expandafter\pgfmanual@tempa\expandafter{\pgfmanual@tempb}{%
\edef\pgfmanualpdflabel@@{\prefix\pgfmanualpdflabel@@}%
\expandafter\pgfmanual@handlespeciallabeltokens@in\expandafter{\pgfmanualpdflabel@@}%
\ifcsname pgfd@lbl@\pgfmanualpdflabel@@\endcsname
\xdef\pgfmanual@glob{\pgfmanualpdflabel@@}%
\breakforeach
\fi
}%
\let\pgfmanualpdflabel@@=\pgfmanual@glob
\ifcsname pgfd@lbl@\pgfmanualpdflabel@@\endcsname
\else
\ifpgfmanualpdfwarnings
\begingroup
\toks0={#1}%
\pgfmanual@warning{pgfmanualpdfref{\the\toks0 }: target label does not exist.}%
\endgroup
\fi
#2%
\let\pgfmanualpdflabel@@=\pgfutil@empty
\fi
\fi
\ifx\pgfmanualpdflabel@@\pgfutil@empty
\else
\expandafter\pgfmanualpdfref@\expandafter{\pgfmanualpdflabel@@}{#2}%
\fi
\endgroup
}%
\def\pgfmanualpdfref@#1#2{%
\pgfkeysgetvalue{/pdflinks/internal link prefix}\pgfmanual@temp
\expandafter\hyperlink\expandafter{\pgfmanual@temp.#1}{#2}%
\ifpgfmanualshowlabels
\pgfkeysvalueof{/pdflinks/show labels code/.@cmd}{#1}\pgfeov
\fi
}%
% Handles special tokens in a pdf label which should be treated with
% care.
%
% For example, backslashes might produce problems.
% This occurs quite frequently with automatically generated hyperrefs
% inside of codeexamples where \pgfmanualpdfref will be invoked -
% there, we get the catcode 12 backslashes.
% Check for them!
%
% #1: a token list which shall be used either as cross ref or as
% label.
%
% On output, the macro \pgfmanualpdflabel@@ will be '\edef'ed to the
% new, possibly modified value.
\def\pgfmanual@handlespeciallabeltokens@in#1{%
\begingroup
\pgfmanualpdf@installreplacements
\expandafter\pgfutil@in@\pgfmanual@pretty@backslash{#1}%
\ifpgfutil@in@
% assume the backslash is the first char and substitute it:
\pgfmanualpdfref@substitute@backslash#1\relax
\else
\edef\pgfmanualpdflabel@@{#1}%
\fi
\def\pgfmanual@tmp{\pgfutilstrreplace{ }{\space}}%
\expandafter\pgfmanual@tmp\expandafter{\pgfmanualpdflabel@@}%
\edef\pgfmanualpdflabel@@{\pgfretval}%
\pgfmath@smuggleone\pgfmanualpdflabel@@
\endgroup
}%
\expandafter\def\expandafter\pgfmanualpdfref@substitute@backslash\expandafter#\expandafter1\pgfmanual@pretty@backslash#2\relax{%
\edef\pgfmanualpdflabel@@{#1\textbackslash #2}%
}%
% Typesets '#1' in red,\texttt like every declaration. It will also
% generate a pdf cross ref anchor for #1.
%
% WARNING: this changes catcodes! In case this is not acceptable in
% your context, you will need to generate a \pgfmanualpdflabel
% manually.
%
% \declareandlabel{\controlsequence} can be used as |\controlsequence|
\def\declareandlabel{%
\begingroup
\pgfmanual@verb@preparecatcodes@
\def\pgfmanualprettyprinterhandlecollectedargs##1{%
\pgfmanualpdflabel##1{\texttt{\declare##1}}% mark: '##1' contains already braces.
\endgroup
}%
\pgfmanualprettyprintercollectargcount1{\relax}%
}
%
% \verbpdfref{\controlsequence more stuff}
% is the same as writing |\controlsequence more stuff|, but the
% *complete* argument is supposed to be one label.
%
% The difference to \pgfmanualpdfref{...}{} is that the argument is
% supposed to be verbatim text.
\def\verbpdfref{%
\begingroup
\pgfmanual@verb@preparecatcodes@
\def\pgfmanualprettyprinterhandlecollectedargs##1{%
\pgfmanualpdfref##1{\texttt{##1}}% mark: '##1' contains already braces.
\endgroup
}%
\pgfmanualprettyprintercollectargcount1{\relax}%
}
% Prepare active vertical bars, |....| for auto-pretty cross
% referencing.
%
% Example:
% |\pgfkeys| -> will generate a hyperref!
{
\catcode`\|=12
\gdef\pgfmanual@verb@bar{|}%
% \gdef\pgfmanual@verb@collect#1|{%
% % this command will also handle control sequences.
% \texttt{\pgfmanualprettyprintpgfkeys{#1}}%
% \endgroup
% }%
\catcode`\|=13
\gdef\pgfmanual@verb@activebar{|}%
}
\def\pgfmanual@verb{%
\begingroup
\pgfmanual@verb@preparecatcodes@
\toksdef\t@pgfmanual@verb=0
\t@pgfmanual@verb={}%
\pgfmanual@verb@collect
}
% this version of \pgfmanual@verb@collect is less efficient than the
% one uncommented above. BUT: it can auto-detect the case when
% |...| has been provided somewhere where I can't change catcodes!
% The other one would simply fail to compile.
\def\pgfmanual@verb@collect#1{%
\def\pgfmanual@temp{#1}%
\ifx\pgfmanual@temp\pgfmanual@verb@bar
% ok, finish:
\edef\pgfmanual@verb@collect@next{%
% this command will also handle control sequences.
\noexpand\endgroup
\noexpand\texttt{\noexpand\pgfmanualprettyprintpgfkeys{\the\t@pgfmanual@verb}}%
}%
\else
\ifx\pgfmanual@temp\pgfmanual@verb@activebar
% ohoh... that should not happen! It means someone invoked
% |...| within an argument; I couln't change catcodes.
% Ok, resort to a simple fallback solution.
% FIXME : I have just realized that THIS DOESN'T PRESERVE SPACES
\edef\pgfmanual@verb@collect@next{%
\noexpand\endgroup
\noexpand\texttt{\the\t@pgfmanual@verb}%
}%
\else
\t@pgfmanual@verb=\expandafter{\the\t@pgfmanual@verb #1}%
\let\pgfmanual@verb@collect@next=\pgfmanual@verb@collect
\fi
\fi
\pgfmanual@verb@collect@next
}%
\AtBeginDocument{%
\ifpgfmanualprettyenabled
\catcode`\|=13
\expandafter\let\pgfmanual@verb@activebar=\pgfmanual@verb
\fi
}%
\def\pgfmanual@verb@preparecatcodes@{%
\let\do\@makeother%
\dospecials%
\catcode`\%=12 % THATS IMPORTANT! Do *not* handle comments!
% these catcodes are expected by the pretty printer...
%\catcode`\^^M=13
\catcode`\ =13
\catcode`\^^I=13
\expandafter\def\pgfmanual@pretty@activespace{\space}%
\expandafter\def\pgfmanual@pretty@activetab{\space\space\space\space}%
}%
\endinput
% vi: ts=4 sw=4
