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%%
%% This is file `bidicontour.sty'.
%%
%% __________________________________________________
%% Copyright © 2014 Vafa Khalighi <persian-tex@tug.org>
%%
%% It may be distributed and/or modified under the LaTeX Project Public License,
%% version 1.3c or higher (your choice). The latest version of
%% this license is at: http://www.latex-project.org/lppl.txt
%%
%% This work is “author-maintained” (as per LPPL maintenance status)
%% by Vafa Khalighi.
%%
%%
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{bidicontour}
[2014/07/14 v0.1 Bidi-aware contoured text]
\RequirePackage{color}
\RequirePackage{trig}
\def\bidicon@coloroff{%
\def\@undeclaredcolor[##1]##2{}%
\def\@declaredcolor##1{}%
}
\newcommand*\bidicon@put[3]{%
\if@RTL%
\llap{\raisebox{#2}[0pt]{#3}\hskip-#1}%
\else%
\rlap{\hskip#1\raisebox{#2}[0pt]{#3}}%
\fi}
\newcommand*\bidicontourlength[1]{\def\bidicon@base@length{#1}}
\bidicontourlength{0.03em}
\newcommand*\bidicontournumber[1]{\def\bidicon@default@copies{#1}}
\bidicontournumber{16}
\newlength{\bidicon@length}
\newcommand*\bidicon@define@copyangles[1]{%
\edef\bidicon@tempa{auto}%
\edef\bidicon@tempb{#1}%
\ifx\bidicon@tempa\bidicon@tempb
\expandafter\ifdim\f@size pt<15pt\relax
\edef\bidicon@tempb{16}%
\else
\expandafter\ifdim\f@size pt<25pt\relax
\edef\bidicon@tempb{32}%
\else
\expandafter\ifdim\f@size pt<50pt\relax
\edef\bidicon@tempb{60}%
\else
\edef\bidicon@tempb{120}%
\fi
\fi
\fi
\fi
\@tempcnta=\bidicon@tempb\relax
\@ifundefined{bidicon@\number\@tempcnta @copies}{%
\global\@namedef{bidicon@\number\@tempcnta @copies}{}%
\@tempdima=360\p@
\divide\@tempdima by \@tempcnta
\@tempdimb=\z@
\@tempcntb=\z@
\loop
\ifnum\@tempcntb<\@tempcnta
\edef\bidicon@temp@fdim{\strip@pt\@tempdimb}%
\CalculateSin{\bidicon@temp@fdim}%
\CalculateCos{\bidicon@temp@fdim}%
\advance\@tempcntb \@ne
\advance\@tempdimb \@tempdima\relax
\repeat
}{}%
\let\bidicon@tempa\@undefined
\let\bidicon@tempb\@undefined
}
\newcommand*\bidicontour{\@ifstar{\@bidicontour[32]}{\@bidicontour}}
\newcommand*\@bidicontour[3][\bidicon@default@copies]{%
\ifvmode
\leavevmode
\fi
\setlength\bidicon@length{\bidicon@base@length}%
\ifbidicon@outline
\typeout{bidicontour: Using real outline for `#3'\on@line.}%
\@bidicontour@outline{#2}{#3}%
\else
\if@RTL\mbox{#3}\fi%
\begingroup
\bidicon@define@copyangles{#1}%
\typeout{bidicontour: Using \the\@tempcnta\space copies for `#3'\on@line.}%
\@tempdima=360\p@
\divide\@tempdima by \@tempcnta\relax
\@tempdimb=\z@
\@tempcntb=\z@
\color{#2}%
\bidicon@coloroff
\loop
\ifnum\@tempcntb<\@tempcnta\relax
\edef\bidicon@temp@fdim{\strip@pt\@tempdimb}%
\bidicon@put
{\UseSin{\bidicon@temp@fdim}\bidicon@length}%
{\UseCos{\bidicon@temp@fdim}\bidicon@length}%
{#3}%
\advance\@tempcntb \@ne\relax
\advance\@tempdimb\@tempdima\relax
\repeat
\endgroup
\if@RTL\else\mbox{#3}\fi%
\fi
}
\newcommand*\@bidicontour@outline[2]{%
\if@RTL\mbox{#2}\fi%
\begingroup
\setlength\bidicon@length{2\bidicon@length}%
\setlength\bidicon@length{0.99626400996\bidicon@length}%
\color{#1}%
\bidicon@coloroff
\beginL\special{%
pdf:code
q
1 j
1 J
1 Tr
\strip@pt\bidicon@length\space w
}%
\rlap{\if@RTL\beginR\fi #2\if@RTL\endR\fi}%
\special{%
pdf:code
Q
}\endL%
\endgroup
\if@RTL\else\mbox{#2}\fi%
}
\newif\ifbidicon@outline
\DeclareOption{auto}{\bidicontournumber{auto}}
\DeclareOption{outline}{\bidicon@outlinetrue}
\DeclareOption{copies}{\bidicon@outlinefalse}
\InputIfFileExists{bidicontour.cfg}{%
\typeout{Loading configuration file `bidicontour.cfg'.}%
}{%
\typeout{No configuration file `bidicontour.cfg' found.}%
}
\ProcessOptions\relax
\endinput
%%
%% End of file `bidicontour.sty'.
|
