new latex package background (8nov09)

git-svn-id: svn://tug.org/texlive/trunk@16034 c570f23f-e606-0410-a88d-b1316a301751

5 files changed, 714 insertions, 0 deletions

diff --git a/Master/texmf-dist/doc/latex/background/README b/Master/texmf-dist/doc/latex/background/README
new file mode 100644
index 00000000000..957e28e6a44
--- /dev/null
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@@ -0,0 +1,15 @@
+==========================================================================
+
+The `background' package
+Copyright (C) 2009 Gonzalo Medina (gmedinaar@unal.edu.co)
+
+License: LPPL = LaTeX Project Public Licence
+Maintenance Status: maintained (by Gonzalo Medina)
+
+---------------------------------------------------------------------------------------------------------------------------------------------------
+
+The `background' package v1.0 offers the placement of background material 
+on the pages of a document. The user can control many aspects (i.e., contents, 
+position, color, opacity) of the background material that will be displayed.
+
+==========================================================================
diff --git a/Master/texmf-dist/doc/latex/background/background.pdf b/Master/texmf-dist/doc/latex/background/background.pdf
new file mode 100644
index 00000000000..d94e5340d2a
--- /dev/null
+++ b/Master/texmf-dist/doc/latex/background/background.pdf
diff --git a/Master/texmf-dist/source/latex/background/background.dtx b/Master/texmf-dist/source/latex/background/background.dtx
new file mode 100644
index 00000000000..4ad12d77780
--- /dev/null
+++ b/Master/texmf-dist/source/latex/background/background.dtx
@@ -0,0 +1,554 @@
+% \iffalse meta-comment
+%
+% Copyright (C) 2009 by Gonzalo Medina
+%
+% --------------------------------------------------------------------------
+%
+% This file 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 2003/12/01 or later.
+%
+% This work has the LPPL maintenance status `maintained'.
+% 
+% The Current Maintainer of this work is Gonzalo Medina.
+%
+% This work consists of the files background.dtx and background.ins,
+% and the derived files background.sty and background.pdf.
+%
+% \fi
+%
+% \iffalse
+%
+%<*driver>
+\documentclass{ltxdoc}
+\usepackage{booktabs}
+\usepackage{xcolor}
+\usepackage{ragged2e}
+\usepackage{amsthm}
+\usepackage{ifpdf}
+\ifpdf
+  \usepackage[top]{background}
+  \SetBgContents{-\thepage-}
+  \SetBgAngle{0}
+  \SetBgColor{black!40}
+  \SetBgScale{4}
+  \SetBgHshift{60}
+  \SetBgVshift{-5}
+  \usepackage{mathptmx,courier}
+  \usepackage[scaled=.9]{helvet}
+\fi
+\usepackage{hypdoc}
+\ifpdf
+  \usepackage{hypdestopt}
+\fi
+\hypersetup{pdfkeywords={LaTeX, package, background},%
+  pdfstartpage={},pdfstartview={},breaklinks=true,%
+  linktocpage}
+
+\newcommand\MarNote[1]{\marginpar{\RaggedLeft\textcolor{blue}{#1}}}
+\newcommand*\package[1]{{\upshape\mdseries\sffamily #1}}
+
+\theoremstyle{remark}
+\newtheorem{exam}{Example}
+
+\setlength\parindent{0pt}
+
+\pagestyle{empty}
+\makeatletter
+  \let\ps@titlepage\ps@empty
+\makeatother
+
+\usepackage{titletoc}
+\titlecontents*{section}[0pt]
+  {\itshape}{}{}
+  {, \thecontentspage}[\ --\ ][.]
+\titlecontents*{subsection}[0pt]
+  {\upshape\small}{}{}
+  {, \thecontentspage}[ (][. ][)]
+\setcounter{tocdepth}{2}
+\EnableCrossrefs
+\CodelineIndex
+\RecordChanges
+
+\begin{document}
+\DocInput{background.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         \~}
+%
+% \CheckSum{127}
+%
+% \changes{v 1.0}{2009/11/07}{First version}
+%
+% \GetFileInfo{background.sty}
+%
+% \title{The \package{background} package\\
+% {\footnotesize\fileversion , dated \filedate.}}
+% \author{Gonzalo Medina\\%
+%   Universidad Nacional de Colombia -- Sede Manizales\\%
+%   Departamento de Matem\'aticas y Estad\'istica\\
+%   \texttt{gmedinaar@unal.edu.co}}
+%
+% \maketitle
+%
+% \begin{abstract}
+% \noindent This package allows the placement of background material on the pages of a 
+% document. The user can control many aspects (i.e., contents, position, color, opacity) of the
+% background material that will be displayed. 
+% \end{abstract}
+% \tableofcontents
+% \section{Introduction}
+% The \package{background} package relies on the \package{TikZ} and \package{everypar} 
+% packages to provide a simple and flexible mechanism to include background material on all 
+% (or on some of) the pages of a \LaTeX2e document.
+% \par\medskip
+% The implementation is quite simple and parallels the one of the \package{draftwatermark} 
+% package by Sergio Callegari, but adds greater control over the background material attributes.
+% \par\medskip
+% The author will gladly receive suggestions, comments and bug reports.
+%
+% \section{User Interface}
+%
+% Loading this package (without any package options) in the preamble of a document in the 
+% standard way:
+% \begin{center}
+% |\usepackage{background}|
+% \end{center}
+% activates a set of predefined options that will typeset the word "Draft" across every page of 
+% your document (from the lower left corner to the upper right corner), using 
+% \textcolor{red!45}{this color} and a huge font size.
+% \par\medskip
+% Of course, the package can be loaded using some of the options described in the next section;
+% for example:
+% \begin{center}
+% |\usepackage[some,bottom]{background}|
+% \end{center}
+%
+% \subsection{Package Options}
+% Table~\ref{tab:options} shows the available package options\MarNote{By 
+% default, the package loads the options |all| and |center|.} and their meaning. Obviously, the
+%  options |all| and |some| are mutually exclusive; the same remark applies to the group of options
+% |center|, |bottom|, and |top|.
+% \par\medskip
+% Take into account that using the |some| option will cause no background material to be displayed 
+% at all and the user will have to issue the command |\BgThispage| for each page
+% in which he/she desires the background material to appear (see example \ref{exa:bgthispage}).
+%
+% \begin{table}[!ht]
+%   \centering
+%   \begin{tabular}{rp{6cm}}\toprule
+%   Option & Meaning\\\toprule
+%   |all| & The background material will be displayed in all the pages.\\
+%   |some| & The background material will be displayed only in the pages for which the 
+%   |\BgThispage| command was used.\\
+%   |center| & The background material will be displayed diagonally.\\
+%   |bottom| & The background material will be displayed horizontally at the bottom of the page.\\
+%   |top| & The background material will be displayed horizontally at the top of the page.
+%   \\\bottomrule
+%   \end{tabular}
+%  \caption{The package options.}
+%  \label{tab:options}
+% \end{table}
+% 
+% \subsection{User Commands}
+%  Since the commands used to modify attributes of the background material depend on the 
+% |\node| construct offered by the \package{TikZ} package, we strongly encourage the reading 
+% of Till Tantau's
+%  \href{http://mirror.ctan.org/graphics/pgf/base/doc/generic/pgf/pgfmanual.pdf}%
+%    {\emph{PGF/TikZ package manual}}.
+% \par\medskip
+% \DescribeMacro{\SetBgContents}
+% This command allows the user to change the material that will be used as background. The usage 
+% is
+%  \begin{center}
+%    |\SetBgContents{|\meta{material}|}|
+ % \end{center}
+% where \meta{material} can be any text or an image (via the |\includegraphics| command
+% from the \package{graphicx} package) or even a graphic created, for example, with the
+% \package{TikZ} package.
+% \par\medskip
+% \DescribeMacro{\SetBgColor}
+% This command allows the user to change the color that will be used for the background material if % such material is text. The usage is
+% \begin{center}
+%   |\SetBgContents{|\meta{color}|}|
+% \end{center}
+% where \meta{color} can be any color set by the \package{xcolor} package.
+% \par\medskip
+% \DescribeMacro{\SetBgAngle}
+% This command allows the user to change the angle that will be used for displaying the background % material. The usage is
+% \begin{center}
+%   |\SetBgContents{|\meta{degrees}|}|
+% \end{center}
+% where \meta{degrees} can be any value between $-360$ and $360$.
+% \par\medskip
+% \DescribeMacro{\SetBgOpacity}
+% This command allows the user to change the transparency level for the background material. The % usage is
+% \begin{center}
+%   |\SetBgOpacity{|\meta{value}|}|
+% \end{center}
+% where \meta{value} can be any number between $0$ (full transparency) and $1$ (no 
+% transparency at all).
+% \par\medskip
+% \DescribeMacro{\SetBgScale}
+% This command allows the user to change the scaling factor that will be applied to the background
+% material. The usage is
+% \begin{center}
+%   |\SetBgScale{|\meta{factor}|}|
+% \end{center}
+% where \meta{factor} can be any positive value.
+% \par\medskip
+% \par\medskip
+% \DescribeMacro{\SetBgPosition}
+% This command allows the user to define the position of the background
+% material. The usage is
+% \begin{center}
+%   |\SetBgPosition{|\meta{position}|}|
+% \end{center}
+% where \meta{position} can be any valid\MarNote{Do not enclose \meta{position} inside
+%  parentheses} position accepted by the |at| syntax for nodes placement (see the TikZ 
+% manual). Some examples of valid positions are
+% \begin{center}
+%   |\SetBgPosition{0,0}|\\
+%   |\SetBgPosition{current page.north}|\\
+%   |\SetBgPosition{5cm,7cm}|
+% \end{center}
+% \par\medskip
+% \DescribeMacro{\SetBgAnchor}
+% This command allows the user to set the anchor for the node placement. The usage is
+% \begin{center}
+%   |\SetBgAnchor{|\meta{anchor name}|}|
+% \end{center}
+% Typical examples are:
+% \begin{center}
+%   |\SetBgAnchor{north east}|\\
+%   |\SetBgAnchor{west}|\\
+% \end{center}
+% \par\medskip
+% \DescribeMacro{\SetBgHshift}
+% \DescribeMacro{\SetBgVshift}
+% These two commands control the horizontal and vertical shifting of the node position.
+% \begin{center}
+%   |\SetBgHshift{|\meta{value}|}|\\
+%   |\SetBgVshift{|\meta{value}|}|
+% \end{center}
+% \par\medskip
+% The following two commands are designed to give the user control on whether the background
+% material should or should not appear on specific pages of the document.
+% \par\medskip 
+% \DescribeMacro{\BgThispage}
+% This command permits to select particular pages in which the background material will
+% be displayed (see example \ref{exa:bgthispage}).
+%
+% \subsubsection{Experimental}
+% \DescribeMacro{\NoBgThispage}
+% This command will prevent the background material to be displayed in the page where it
+% \MarNote{Do not use this command in two column mode.}
+% was issued. Its implementation depends on the \package{afterpage} package,
+% so the corresponding precautions must be taken into account (see example 
+% \ref{exa:nobgthispage}) . 
+%
+% \section{Examples}
+% In the following examples, the \package{lipsum} package was used only to automatically
+% generate text.
+% \begin{exam}
+% This example shows how to display the background material only on the first two pages of
+% the document: 
+% \end{exam}
+% |\documentclass{article}|\\
+% |\usepackage{background}|\\
+% |\usepackage{lipsum}|\\
+%
+% |\begin{document}|\\
+% |\lipsum[1-10]|\\
+% |\newpage\SetBgContents{}|\\
+% |\lipsum[1-30]|\\
+% |\end{document}|
+% \begin{exam}
+% This example imitates the page numbering format used in this document: 
+% \end{exam} 
+% |\documentclass{article}|\\
+% |\usepackage[top]{background}|\\
+% |\usepackage{lipsum}|\\
+%
+% |\SetBgContents{-\thepage-}|\\
+% |\SetBgAngle{0}|\\
+% |\SetBgColor{black!40}|\\
+% |\SetBgScale{4}|\\
+% |\SetBgHshift{60}|\\
+% |\SetBgVshift{-5}|\\
+%
+% |\pagestyle{empty}|\\
+%
+% |\begin{document}|\\
+% |\lipsum[1-30]|\\
+% |\end{document}|
+%
+% \begin{exam}\label{exa:bgthispage}
+% This example illustrates how to use of the |\BgThispage| command to add background material 
+% on selected pages.
+% \end{exam}
+% |\documentclass{article}|\\
+% |\usepackage[some,top]{background}|\\
+% |\usepackage{lipsum}|\\
+%
+% |\begin{document}|\\
+% |\lipsum[1-5]|\\
+% |\newpage|\\
+% |\SetBgContents{A}\SetBgColor{yellow}|\\
+% |\BgThispage|\\
+% |\lipsum[1-5]|\\
+% |\newpage|\\
+% |\SetBgContents{B}\SetBgColor{blue}|\\
+% |\BgThispage|\\
+% |\lipsum[1-5]|\\
+% |\end{document}|
+% 
+% \begin{exam}
+% This example shows how to proceed in order to obtain different background material for the 
+% odd and even pages of a document.
+% \end{exam}
+% |\documentclass{article}|\\
+% |\usepackage{background}|\\
+% |\usepackage{lipsum}|\\
+% |\usepackage{ifthen}|\\
+%
+% |\SetBgContents{}|\\
+% |\SetBgOpacity{1}|\\
+% |\SetBgScale{1.5}|\\
+% |\makeatletter|\\
+% |\AddEverypageHook{%|\\
+% |  \ifthenelse{\isodd{\thepage}}%|\\
+% |    {\SetBgAngle{90}%|\\
+% |     \SetBgPosition{0,-.7\textheight}%|\\
+% |     \SetBgColor{blue!90}%|\\
+% |     \SetBgContents{The background package}}%|\\
+% |    {\SetBgAngle{270}%|\\
+% |     \SetBgPosition{1.35\textwidth,-.7\textheight}%|\\
+% |     \SetBgContents{First version}}%|\\
+% |  \bg@material}|\\
+% |\makeatother|\\
+%
+% |\begin{document}|\\
+% |\lipsum[1-30]|\\
+% |\end{document}|
+%
+% \begin{exam}\label{exa:nobgthispage}
+% This example\MarNote{Adding the |twocolumn| class option will produce compilation errors}
+% illustrates the use of the |\NoBgThispage| command, to 
+% suppress the background material on selected pages (page 2, in this case).
+% \end{exam}
+% |\documentclass{article}|\\
+% |\usepackage{background}|\\
+% |\usepackage{lipsum}|\\
+%
+% |\begin{document}|\\
+% |\lipsum[1-5]|\\
+% |\newpage\NoBgThispage|\\
+% |\lipsum[1-5]|\\
+% |\newpage|\\
+% |\lipsum[1-20]|\\
+% |\end{document}|
+%
+% \DoNotIndex{\#,\$,\%,\&,\@,\\,\{,\},\^,\_,\~,\ }
+% \DoNotIndex{\advance,\begingroup,\begin,\catcode,\closein}
+% \DoNotIndex{\closeout,\day,\def,\edef,\else,\end,\empty,\endgroup,\fi}
+% \DoNotIndex{\let,\newcommand,\renewcommand}
+% 
+% \StopEventually{\PrintIndex}
+%
+% \section{Implementation}
+% 
+% Standard identification:
+% \begin{macrocode}
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesPackage{background}[2009/11/07 v1.0 bg material]
+%    \end{macrocode}
+%
+% Now we load the packages that will be used:
+%
+% \begin{macrocode}
+
+\RequirePackage{everypage}
+\RequirePackage{tikz}
+\RequirePackage{afterpage}
+%    \end{macrocode}
+%
+% \begin{macro}{\bg@some}
+% A boolean (initially set to |false|) to control whether the background material will be displayed in
+% every page or not.
+% \begin{macrocode}
+
+\newif\ifbg@some
+  \bg@somefalse
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\bg@contents}
+% \begin{macro}{\bg@color}
+% \begin{macro}{\bg@angle}
+% \begin{macro}{\bg@opacity}
+% \begin{macro}{\bg@scale}
+% \begin{macro}{\bg@position}
+% \begin{macro}{\bg@anchor}
+% \begin{macro}{\bg@hshift}
+% \begin{macro}{\bg@vshift}
+% We define the internal control commands and set their default value:
+% \begin{macrocode}
+
+\def\bg@contents{Draft}
+\def\bg@color{red!45}
+\def\bg@angle{60}
+\def\bg@opacity{.5}
+\def\bg@scale{15}
+\def\bg@position{current page.center}
+\def\bg@anchor{}
+\def\bg@hshift{0}
+\def\bg@vshift{0}
+%    \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% 
+% Now we declare the package options:
+% \begin{macrocode}
+
+\DeclareOption{all}{\bg@somefalse}
+\DeclareOption{some}{\bg@sometrue}
+\DeclareOption{center}{%
+  \def\bg@position{current page.center}%
+  \def\bg@anchor{}%
+  \def\bg@angle{60}}
+\DeclareOption{bottom}{%
+  \def\bg@position{current page.south}%
+  \def\bg@anchor{above}%
+  \def\bg@angle{0}%
+  \def\bg@scale{8}}
+\DeclareOption{top}{%
+  \def\bg@position{current page.north}%
+  \def\bg@anchor{below}%
+  \def\bg@angle{0}%
+  \def\bg@scale{8}}
+%    \end{macrocode}
+%
+% We next execute and process options in the standard \LaTeX2e way:
+% \begin{macrocode}
+
+\ExecuteOptions{all,center}
+\ProcessOptions
+%    \end{macrocode}
+%
+% \begin{macro}{\SetBgContents}
+% \begin{macro}{\SetBgColor}
+% \begin{macro}{\SetBgAngle}
+% \begin{macro}{\SetBgOpacity}
+% \begin{macro}{\SetBgScale}
+% \begin{macro}{\SetBgPosition}
+% \begin{macro}{\SetBgAnchor}
+% \begin{macro}{\SetBgHshift}
+% \begin{macro}{\SetBgVshift}
+% Now comes the definition of the user commands:
+% \begin{macrocode}
+
+\newcommand*\SetBgContents[1]{%
+  \def\bg@contents{#1}}
+\newcommand*\SetBgColor[1]{%
+  \def\bg@color{#1}}
+\newcommand*\SetBgAngle[1]{%
+  \def\bg@angle{#1}}
+\newcommand*\SetBgOpacity[1]{%
+  \def\bg@opacity{#1}}
+\newcommand*\SetBgScale[1]{%
+  \def\bg@scale{#1}}
+\newcommand*\SetBgPosition[1]{%
+  \def\bg@position{#1}}
+\newcommand*\SetBgAnchor[1]{%
+  \def\bg@anchor{#1}}
+\newcommand*\SetBgHshift[1]{%
+  \def\bg@hshift{#1}}
+\newcommand*\SetBgVshift[1]{%
+  \def\bg@vshift{#1}}
+%    \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\bg@material}
+% Our main command uses a simple |\node| construct to build the background material.
+% \begin{macrocode}
+
+\newcommand\bg@material{%
+  \begin{tikzpicture}[remember picture,overlay]
+  \node [rotate=\bg@angle,scale=\bg@scale,opacity=\bg@opacity,%
+    xshift=\bg@hshift,yshift=\bg@vshift,color=\bg@color]
+    at (\bg@position) [\bg@anchor]  {\bg@contents};
+  \end{tikzpicture}}%
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\BgThispage}
+% A simple application of the |AddThispageHook| command provided by the \package{everypage}
+% package.
+% \begin{macrocode}
+\newcommand\BgThispage{\AddThispageHook{\bg@material}}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\NoBgThispage}
+% A hack that perhaps admits improvements. We make a copy of |\bg@material|, and redefine
+% it to be empty on the current page. Then we use the |afterpage| command to restore the 
+% original background material.
+% \begin{macrocode}
+
+\newcommand\NoBgThispage{%
+  \let\oldbg@material\bg@material\renewcommand\bg@material{}%
+  \afterpage{\AddEverypageHook{\oldbg@material}}}
+%    \end{macrocode}
+% \end{macro}
+%
+% Finally, we check for the boolean |bg@some|; if it is |true|, then no background material is
+% added; otherwise, the material will be added using the |AddEverypageHook| command.
+% \begin{macrocode}
+
+\ifbg@some
+  \AddThispageHook{}
+\else
+  \AddEverypageHook{\bg@material}
+\fi
+%    \end{macrocode}
+%
+% \Finale
+\endinput
diff --git a/Master/texmf-dist/source/latex/background/background.ins b/Master/texmf-dist/source/latex/background/background.ins
new file mode 100644
index 00000000000..9cb1e43e269
--- /dev/null
+++ b/Master/texmf-dist/source/latex/background/background.ins
@@ -0,0 +1,38 @@
+\input docstrip.tex

+\keepsilent

+\preamble

+

+Copyright (C) 2009 Gonzalo Medina (gmedinaar@unal.edu.co)

+

+--------------------------------------------------------------------------

+

+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 2003/12/01 or later.

+

+This work has the LPPL maintenance status "maintained".

+

+The Current Maintainer of this work is Gonzalo Medina.

+

+This work consists of the files background.ins, background.dtx, 

+and the derived files background.sty and background.pdf.

+

+\endpreamble

+\generate{\file{background.sty}{\from{background.dtx}{package}}}

+\Msg{*********************************************************}

+\Msg{*}

+\Msg{* To finish the installation you have to move the}

+\Msg{* following file into a directory searched by TeX:}

+\Msg{* }

+\Msg{* \space\space background.sty}

+\Msg{*}

+\Msg{* To produce the documentation run the file background.dtx}

+\Msg{* through LaTeX.}

+\Msg{*}

+\Msg{* Happy TeXing!}

+\Msg{*********************************************************}

+\endbatchfile
\ No newline at end of file
diff --git a/Master/texmf-dist/tex/latex/background/background.sty b/Master/texmf-dist/tex/latex/background/background.sty
new file mode 100644
index 00000000000..314c090a90a
--- /dev/null
+++ b/Master/texmf-dist/tex/latex/background/background.sty
@@ -0,0 +1,107 @@
+%%
+%% This is file `background.sty',
+%% generated with the docstrip utility.
+%%
+%% The original source files were:
+%%
+%% background.dtx  (with options: `package')
+%% 
+%% Copyright (C) 2009 Gonzalo Medina (gmedinaar@unal.edu.co)
+%% 
+%% --------------------------------------------------------------------------
+%% 
+%% 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 2003/12/01 or later.
+%% 
+%% This work has the LPPL maintenance status "maintained".
+%% 
+%% The Current Maintainer of this work is Gonzalo Medina.
+%% 
+%% This work consists of the files background.ins, background.dtx,
+%% and the derived files background.sty and background.pdf.
+%% 
+ % \end{center}
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesPackage{background}[2009/11/07 v1.0 bg material]
+
+\RequirePackage{everypage}
+\RequirePackage{tikz}
+\RequirePackage{afterpage}
+
+\newif\ifbg@some
+  \bg@somefalse
+
+\def\bg@contents{Draft}
+\def\bg@color{red!45}
+\def\bg@angle{60}
+\def\bg@opacity{.5}
+\def\bg@scale{15}
+\def\bg@position{current page.center}
+\def\bg@anchor{}
+\def\bg@hshift{0}
+\def\bg@vshift{0}
+
+\DeclareOption{all}{\bg@somefalse}
+\DeclareOption{some}{\bg@sometrue}
+\DeclareOption{center}{%
+  \def\bg@position{current page.center}%
+  \def\bg@anchor{}%
+  \def\bg@angle{60}}
+\DeclareOption{bottom}{%
+  \def\bg@position{current page.south}%
+  \def\bg@anchor{above}%
+  \def\bg@angle{0}%
+  \def\bg@scale{8}}
+\DeclareOption{top}{%
+  \def\bg@position{current page.north}%
+  \def\bg@anchor{below}%
+  \def\bg@angle{0}%
+  \def\bg@scale{8}}
+
+\ExecuteOptions{all,center}
+\ProcessOptions
+
+\newcommand*\SetBgContents[1]{%
+  \def\bg@contents{#1}}
+\newcommand*\SetBgColor[1]{%
+  \def\bg@color{#1}}
+\newcommand*\SetBgAngle[1]{%
+  \def\bg@angle{#1}}
+\newcommand*\SetBgOpacity[1]{%
+  \def\bg@opacity{#1}}
+\newcommand*\SetBgScale[1]{%
+  \def\bg@scale{#1}}
+\newcommand*\SetBgPosition[1]{%
+  \def\bg@position{#1}}
+\newcommand*\SetBgAnchor[1]{%
+  \def\bg@anchor{#1}}
+\newcommand*\SetBgHshift[1]{%
+  \def\bg@hshift{#1}}
+\newcommand*\SetBgVshift[1]{%
+  \def\bg@vshift{#1}}
+
+\newcommand\bg@material{%
+  \begin{tikzpicture}[remember picture,overlay]
+  \node [rotate=\bg@angle,scale=\bg@scale,opacity=\bg@opacity,%
+    xshift=\bg@hshift,yshift=\bg@vshift,color=\bg@color]
+    at (\bg@position) [\bg@anchor]  {\bg@contents};
+  \end{tikzpicture}}%
+\newcommand\BgThispage{\AddThispageHook{\bg@material}}
+
+\newcommand\NoBgThispage{%
+  \let\oldbg@material\bg@material\renewcommand\bg@material{}%
+  \afterpage{\AddEverypageHook{\oldbg@material}}}
+
+\ifbg@some
+  \AddThispageHook{}
+\else
+  \AddEverypageHook{\bg@material}
+\fi
+\endinput
+%%
+%% End of file `background.sty'.