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-% \iffalse meta-comment
-%
-% File: transparent.dtx
-% Version: 2018/11/18 v1.3
-% Info: Transparency via pdfTeX's color stack
-%
-% Copyright (C) 2007 by
-% Heiko Oberdiek <heiko.oberdiek at googlemail.com>
-% 2016 2018
-% https://github.com/ho-tex/oberdiek/issues
-%
-% This work may be distributed and/or modified under the
-% conditions of the LaTeX Project Public License, either
-% version 1.3c of this license or (at your option) any later
-% version. This version of this license is in
-% https://www.latex-project.org/lppl/lppl-1-3c.txt
-% and the latest version of this license is in
-% https://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 Maintainers of this work are
-% Heiko Oberdiek and the Oberdiek Package Support Group
-% https://github.com/ho-tex/oberdiek/issues
-%
-% This work consists of the main source file transparent.dtx
-% and the derived files
-% transparent.sty, transparent.pdf, transparent.ins, transparent.drv,
-% transparent-example.tex.
-%
-% Distribution:
-% CTAN:macros/latex/contrib/oberdiek/transparent.dtx
-% CTAN:macros/latex/contrib/oberdiek/transparent.pdf
-%
-% Unpacking:
-% (a) If transparent.ins is present:
-% tex transparent.ins
-% (b) Without transparent.ins:
-% tex transparent.dtx
-% (c) If you insist on using LaTeX
-% latex \let\install=y\input{transparent.dtx}
-% (quote the arguments according to the demands of your shell)
-%
-% Documentation:
-% (a) If transparent.drv is present:
-% latex transparent.drv
-% (b) Without transparent.drv:
-% latex transparent.dtx; ...
-% The class ltxdoc loads the configuration file ltxdoc.cfg
-% if available. Here you can specify further options, e.g.
-% use A4 as paper format:
-% \PassOptionsToClass{a4paper}{article}
-%
-% Programm calls to get the documentation (example):
-% pdflatex transparent.dtx
-% makeindex -s gind.ist transparent.idx
-% pdflatex transparent.dtx
-% makeindex -s gind.ist transparent.idx
-% pdflatex transparent.dtx
-%
-% Installation:
-% TDS:tex/latex/oberdiek/transparent.sty
-% TDS:doc/latex/oberdiek/transparent.pdf
-% TDS:doc/latex/oberdiek/transparent-example.tex
-% TDS:source/latex/oberdiek/transparent.dtx
-%
-%<*ignore>
-\begingroup
- \catcode123=1 %
- \catcode125=2 %
- \def\x{LaTeX2e}%
-\expandafter\endgroup
-\ifcase 0\ifx\install y1\fi\expandafter
- \ifx\csname processbatchFile\endcsname\relax\else1\fi
- \ifx\fmtname\x\else 1\fi\relax
-\else\csname fi\endcsname
-%</ignore>
-%<*install>
-\input docstrip.tex
-\Msg{************************************************************************}
-\Msg{* Installation}
-\Msg{* Package: transparent 2018/11/18 v1.3 Transparency via pdfTeX's color stack (HO)}
-\Msg{************************************************************************}
-
-\keepsilent
-\askforoverwritefalse
-
-\let\MetaPrefix\relax
-\preamble
-
-This is a generated file.
-
-Project: transparent
-Version: 2018/11/18 v1.3
-
-Copyright (C) 2007 by
- Heiko Oberdiek <heiko.oberdiek at googlemail.com>
-
-This work may be distributed and/or modified under the
-conditions of the LaTeX Project Public License, either
-version 1.3c of this license or (at your option) any later
-version. This version of this license is in
- https://www.latex-project.org/lppl/lppl-1-3c.txt
-and the latest version of this license is in
- https://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 Maintainers of this work are
-Heiko Oberdiek and the Oberdiek Package Support Group
-https://github.com/ho-tex/oberdiek/issues
-
-
-This work consists of the main source file transparent.dtx
-and the derived files
- transparent.sty, transparent.pdf, transparent.ins, transparent.drv,
- transparent-example.tex.
-
-\endpreamble
-\let\MetaPrefix\DoubleperCent
-
-\generate{%
- \file{transparent.ins}{\from{transparent.dtx}{install}}%
- \file{transparent.drv}{\from{transparent.dtx}{driver}}%
- \usedir{tex/latex/oberdiek}%
- \file{transparent.sty}{\from{transparent.dtx}{package}}%
- \usedir{doc/latex/oberdiek}%
- \file{transparent-example.tex}{\from{transparent.dtx}{example}}%
- \nopreamble
- \nopostamble
-% \usedir{source/latex/oberdiek/catalogue}%
-% \file{transparent.xml}{\from{transparent.dtx}{catalogue}}%
-}
-
-\catcode32=13\relax% active space
-\let =\space%
-\Msg{************************************************************************}
-\Msg{*}
-\Msg{* To finish the installation you have to move the following}
-\Msg{* file into a directory searched by TeX:}
-\Msg{*}
-\Msg{* transparent.sty}
-\Msg{*}
-\Msg{* To produce the documentation run the file `transparent.drv'}
-\Msg{* through LaTeX.}
-\Msg{*}
-\Msg{* Happy TeXing!}
-\Msg{*}
-\Msg{************************************************************************}
-
-\endbatchfile
-%</install>
-%<*ignore>
-\fi
-%</ignore>
-%<*driver>
-\NeedsTeXFormat{LaTeX2e}
-\ProvidesFile{transparent.drv}%
- [2018/11/18 v1.3 Transparency via pdfTeX's color stack (HO)]%
-\documentclass{ltxdoc}
-\usepackage{holtxdoc}[2011/11/22]
-\begin{document}
- \DocInput{transparent.dtx}%
-\end{document}
-%</driver>
-% \fi
-%
-%
-% \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 \~}
-%
-% \GetFileInfo{transparent.drv}
-%
-% \title{The \xpackage{transparent} package}
-% \date{2018/11/18 v1.3}
-% \author{Heiko Oberdiek\thanks
-% {Please report any issues at \url{https://github.com/ho-tex/oberdiek/issues}}}
-%
-% \maketitle
-%
-% \begin{abstract}
-% Since version 1.40 \pdfTeX\ supports several color stacks. This
-% package shows, how a separate color stack can be used for transparency,
-% a property besides color.
-% \end{abstract}
-%
-% \tableofcontents
-%
-% \section{User interface}
-%
-% The package \xpackage{transparent} defines \cs{transparent} and
-% \cs{texttransparent}. They are used like \cs{color} and \cs{textcolor}.
-% The first argument is the transparency value between 0 and 1.
-%
-% Because of the poor interface for page resources, there can be problems
-% with packages that also use \cs{pdfpageresources}.
-%
-% Example for usage:
-% \begin{macrocode}
-%<*example>
-\documentclass[12pt]{article}
-
-\usepackage{color}
-\usepackage{transparent}
-
-\begin{document}
-\colorbox{yellow}{%
- \bfseries
- \color{blue}%
- Blue and %
- \transparent{0.6}%
- transparent blue%
-}
-
-\bigskip
-Hello World
-\texttransparent{0.5}{Hello\newpage World}
-Hello World
-\end{document}
-%</example>
-% \end{macrocode}
-%
-% \StopEventually{
-% }
-%
-% \section{Implementation}
-%
-% \subsection{Identification}
-%
-% \begin{macrocode}
-%<*package>
-\NeedsTeXFormat{LaTeX2e}
-\ProvidesPackage{transparent}%
- [2018/11/18 v1.3 Transparency via pdfTeX's color stack (HO)]%
-% \end{macrocode}
-%
-% \subsection{Initial checks}
-%
-% \subsubsection{Check for \pdfTeX\ in PDF mode}
-% \begin{macrocode}
-\RequirePackage{ifpdf}
-\ifpdf
-\else
- \PackageWarningNoLine{transparent}{%
- Loading aborted, because pdfTeX is not running in PDF mode%
- }%
- \expandafter\endinput
-\fi
-% \end{macrocode}
-%
-% \subsubsection{Check \pdfTeX\ or Lua\TeX\ version}
-% \begin{macrocode}
-\ifx\pdfextension\@undefined
- \let\TRP@pdfcolorstackinit\pdfcolorstackinit
- \let\TRP@pdfpageresources\pdfpageresources
- \let\TRP@pdfcolorstack\pdfcolorstack
-\else
- \def\TRP@pdfcolorstackinit {\pdffeedback colorstackinit}
- \protected\edef\TRP@pdfpageresources {\pdfvariable pageresources}
- \protected\def\TRP@pdfcolorstack {\pdfextension colorstack}
-\fi
-% \end{macrocode}
-%
-% \begin{macrocode}
-\ifcsname TRP@pdfcolorstackinit\endcsname\else
- \PackageWarningNoLine{transparent}{%
- Your pdfTeX version does not support color stacks%
- }%
- \expandafter\endinput
-\fi
-% \end{macrocode}
-%
-% \subsection{Compatibility with pgf}
-% https://github.com/ho-tex/oberdiek/issues/19
-% \begin{macrocode}
-\AtBeginDocument
- {%
- \ifcsname pgfutil@addpdfresource@extgs\endcsname
- \let\TRP@addresource\relax
- \pgfutil@addpdfresource@extgs{\TRP@list}%
- \fi
- }
-% \end{macrocode}
-% \subsection{Transparency}
-%
-% The setting for the different transparency values must
-% be added to the page resources. In the first run the values
-% are recorded in the \xfile{.aux} file. In the second run
-% the values are set and transparency is available.
-% \begin{macrocode}
-\RequirePackage{auxhook}
-\AddLineBeginAux{%
- \string\providecommand{\string\transparent@use}[1]{}%
-}
-\gdef\TRP@list{/TRP1<</ca 1/CA 1>>}
-\def\transparent@use#1{%
- \@ifundefined{TRP#1}{%
- \g@addto@macro\TRP@list{%
- /TRP#1<</ca #1/CA #1>>%
- }%
- \expandafter\gdef\csname TRP#1\endcsname{/TRP#1 gs}%
- }{%
- % #1 is already known, nothing to do
- }%
-}
-\AtBeginDocument{%
- \TRP@addresource
- \let\transparent@use\@gobble
-}
-% \end{macrocode}
-% Unhappily the interface setting page resources is very
-% poor, only a token register \cs{pdfpageresources}.
-% Thus this package tries to be cooperative in the way that
-% it embeds the previous contents of \cs{pdfpageresources}.
-% However it does not solve the problem, if several packages
-% want to set |/ExtGState|.
-% \begin{macrocode}
-\def\TRP@addresource{%
- \begingroup
- \edef\x{\endgroup
- \TRP@pdfpageresources{%
- \the\TRP@pdfpageresources
- /ExtGState<<\TRP@list>>%
- }%
- }%
- \x
-}
-\newif\ifTRP@rerun
-\xdef\TRP@colorstack{%
- \TRP@pdfcolorstackinit page direct{/TRP1 gs}%
-}
-% \end{macrocode}
-% \begin{macro}{\transparent}
-% \begin{macrocode}
-\newcommand*{\transparent}[1]{%
- \begingroup
- \dimen@=#1\p@\relax
- \ifdim\dimen@>\p@
- \dimen@=\p@
- \fi
- \ifdim\dimen@<\z@
- \dimen@=\z@
- \fi
- \ifdim\dimen@=\p@
- \def\x{1}%
- \else
- \ifdim\dimen@=\z@
- \def\x{0}%
- \else
- \edef\x{\strip@pt\dimen@}%
- \edef\x{\expandafter\@gobble\x}%
- \fi
- \fi
- \if@filesw
- \immediate\write\@auxout{%
- \string\transparent@use{\x}%
- }%
- \fi
- \edef\x{\endgroup
- \def\noexpand\transparent@current{\x}%
- }%
- \x
- \transparent@set
-}
-% \end{macrocode}
-% \end{macro}
-% \begin{macrocode}
-\AtEndDocument{%
- \ifTRP@rerun
- \PackageWarningNoLine{transparent}{%
- Rerun to get transparencies right%
- }%
- \fi
-}
-\def\transparent@current{/TRP1 gs}
-\def\transparent@set{%
- \@ifundefined{TRP\transparent@current}{%
- \global\TRP@reruntrue
- }{%
- \TRP@pdfcolorstack\TRP@colorstack push{%
- \csname TRP\transparent@current\endcsname
- }%
- \aftergroup\transparent@reset
- }%
-}
-\def\transparent@reset{%
- \TRP@pdfcolorstack\TRP@colorstack pop\relax
-}
-% \end{macrocode}
-% \begin{macro}{\texttransparent}
-% \begin{macrocode}
-\newcommand*{\texttransparent}[2]{%
- \protect\leavevmode
- \begingroup
- \transparent{#1}%
- #2%
- \endgroup
-}
-% \end{macrocode}
-% \end{macro}
-%
-% \begin{macrocode}
-%</package>
-% \end{macrocode}
-%
-% \section{Installation}
-%
-% \subsection{Download}
-%
-% \paragraph{Package.} This package is available on
-% CTAN\footnote{\CTANpkg{transparent}}:
-% \begin{description}
-% \item[\CTAN{macros/latex/contrib/oberdiek/transparent.dtx}] The source file.
-% \item[\CTAN{macros/latex/contrib/oberdiek/transparent.pdf}] Documentation.
-% \end{description}
-%
-%
-% \paragraph{Bundle.} All the packages of the bundle `oberdiek'
-% are also available in a TDS compliant ZIP archive. There
-% the packages are already unpacked and the documentation files
-% are generated. The files and directories obey the TDS standard.
-% \begin{description}
-% \item[\CTANinstall{install/macros/latex/contrib/oberdiek.tds.zip}]
-% \end{description}
-% \emph{TDS} refers to the standard ``A Directory Structure
-% for \TeX\ Files'' (\CTAN{tds/tds.pdf}). Directories
-% with \xfile{texmf} in their name are usually organized this way.
-%
-% \subsection{Bundle installation}
-%
-% \paragraph{Unpacking.} Unpack the \xfile{oberdiek.tds.zip} in the
-% TDS tree (also known as \xfile{texmf} tree) of your choice.
-% Example (linux):
-% \begin{quote}
-% |unzip oberdiek.tds.zip -d ~/texmf|
-% \end{quote}
-%
-% \paragraph{Script installation.}
-% Check the directory \xfile{TDS:scripts/oberdiek/} for
-% scripts that need further installation steps.
-%
-% \subsection{Package installation}
-%
-% \paragraph{Unpacking.} The \xfile{.dtx} file is a self-extracting
-% \docstrip\ archive. The files are extracted by running the
-% \xfile{.dtx} through \plainTeX:
-% \begin{quote}
-% \verb|tex transparent.dtx|
-% \end{quote}
-%
-% \paragraph{TDS.} Now the different files must be moved into
-% the different directories in your installation TDS tree
-% (also known as \xfile{texmf} tree):
-% \begin{quote}
-% \def\t{^^A
-% \begin{tabular}{@{}>{\ttfamily}l@{ $\rightarrow$ }>{\ttfamily}l@{}}
-% transparent.sty & tex/latex/oberdiek/transparent.sty\\
-% transparent.pdf & doc/latex/oberdiek/transparent.pdf\\
-% transparent-example.tex & doc/latex/oberdiek/transparent-example.tex\\
-% transparent.dtx & source/latex/oberdiek/transparent.dtx\\
-% \end{tabular}^^A
-% }^^A
-% \sbox0{\t}^^A
-% \ifdim\wd0>\linewidth
-% \begingroup
-% \advance\linewidth by\leftmargin
-% \advance\linewidth by\rightmargin
-% \edef\x{\endgroup
-% \def\noexpand\lw{\the\linewidth}^^A
-% }\x
-% \def\lwbox{^^A
-% \leavevmode
-% \hbox to \linewidth{^^A
-% \kern-\leftmargin\relax
-% \hss
-% \usebox0
-% \hss
-% \kern-\rightmargin\relax
-% }^^A
-% }^^A
-% \ifdim\wd0>\lw
-% \sbox0{\small\t}^^A
-% \ifdim\wd0>\linewidth
-% \ifdim\wd0>\lw
-% \sbox0{\footnotesize\t}^^A
-% \ifdim\wd0>\linewidth
-% \ifdim\wd0>\lw
-% \sbox0{\scriptsize\t}^^A
-% \ifdim\wd0>\linewidth
-% \ifdim\wd0>\lw
-% \sbox0{\tiny\t}^^A
-% \ifdim\wd0>\linewidth
-% \lwbox
-% \else
-% \usebox0
-% \fi
-% \else
-% \lwbox
-% \fi
-% \else
-% \usebox0
-% \fi
-% \else
-% \lwbox
-% \fi
-% \else
-% \usebox0
-% \fi
-% \else
-% \lwbox
-% \fi
-% \else
-% \usebox0
-% \fi
-% \else
-% \lwbox
-% \fi
-% \else
-% \usebox0
-% \fi
-% \end{quote}
-% If you have a \xfile{docstrip.cfg} that configures and enables \docstrip's
-% TDS installing feature, then some files can already be in the right
-% place, see the documentation of \docstrip.
-%
-% \subsection{Refresh file name databases}
-%
-% If your \TeX~distribution
-% (\teTeX, \mikTeX, \dots) relies on file name databases, you must refresh
-% these. For example, \teTeX\ users run \verb|texhash| or
-% \verb|mktexlsr|.
-%
-% \subsection{Some details for the interested}
-%
-% \paragraph{Unpacking with \LaTeX.}
-% The \xfile{.dtx} chooses its action depending on the format:
-% \begin{description}
-% \item[\plainTeX:] Run \docstrip\ and extract the files.
-% \item[\LaTeX:] Generate the documentation.
-% \end{description}
-% If you insist on using \LaTeX\ for \docstrip\ (really,
-% \docstrip\ does not need \LaTeX), then inform the autodetect routine
-% about your intention:
-% \begin{quote}
-% \verb|latex \let\install=y\input{transparent.dtx}|
-% \end{quote}
-% Do not forget to quote the argument according to the demands
-% of your shell.
-%
-% \paragraph{Generating the documentation.}
-% You can use both the \xfile{.dtx} or the \xfile{.drv} to generate
-% the documentation. The process can be configured by the
-% configuration file \xfile{ltxdoc.cfg}. For instance, put this
-% line into this file, if you want to have A4 as paper format:
-% \begin{quote}
-% \verb|\PassOptionsToClass{a4paper}{article}|
-% \end{quote}
-% An example follows how to generate the
-% documentation with pdf\LaTeX:
-% \begin{quote}
-%\begin{verbatim}
-%pdflatex transparent.dtx
-%makeindex -s gind.ist transparent.idx
-%pdflatex transparent.dtx
-%makeindex -s gind.ist transparent.idx
-%pdflatex transparent.dtx
-%\end{verbatim}
-% \end{quote}
-%
-% \begin{History}
-% \begin{Version}{2007/01/08 v1.0}
-% \item
-% First version.
-% \end{Version}
-% \begin{Version}{2016/05/16 v1.1}
-% \item
-% Documentation updates.
-% \end{Version}
-% \begin{Version}{2018/09/10 v1.2}
-% \item
-% Update for LuaTeX, remove dependency on Pdf\TeX\ command names.
-% \end{Version}
-% \begin{Version}{2018/11/18 v1.3}
-% \item
-% Added code for pgf compatibility, see https://github.com/ho-tex/oberdiek/issues/19
-% \end{Version}
-% \end{History}
-%
-% \PrintIndex
-%
-% \Finale
-\endinput