+%%
+%% This is file `background.sty',
+%% generated with the docstrip utility.
+%%
+%% The original source files were:
+%%
+%% background.dtx (with options: `package')
+%%
+%% Copyright (C) 2009, 2012, 2014 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.
+%%
+
+
+
+
+
+
+
+
+
+
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesPackage{background}[2014/03/04 v2.1 background material]
+\@ifpackageloaded{xkeyval}{}{\RequirePackage{xkeyval}}
+\@ifpackageloaded{tikz}{}{\RequirePackage{tikz}}
+\@ifpackageloaded{everypage}{}{\RequirePackage{everypage}}
+\@ifpackageloaded{afterpage}{}{\RequirePackage{afterpage}}
+\DeclareOptionX[BG]<background>{contents}{%
+ \def\Background@Contents{#1}}
+\DeclareOptionX[BG]<background>{color}{%
+ \def\Background@Color{#1}}
+\DeclareOptionX[BG]<background>{angle}{%
+ \def\Background@Angle{#1}}
+\DeclareOptionX[BG]<background>{opacity}{%
+ \def\Background@Opacity{#1}}
+\DeclareOptionX[BG]<background>{scale}{%
+ \def\Background@Scale{#1}}
+\DeclareOptionX[BG]<background>{position}{%
+ \def\Background@Position{#1}}
+\DeclareOptionX[BG]<background>{anchor}{%
+ \def\Background@Anchor{#1}}
+\DeclareOptionX[BG]<background>{nodeanchor}{%
+ \def\Background@NodeAnchor{#1}}
+\DeclareOptionX[BG]<background>{hshift}{%
+ \def\Background@HShift{#1}}
+\DeclareOptionX[BG]<background>{vshift}{%
+ \def\Background@VShift{#1}}
+
+\newif\ifbg@some
+ \bg@somefalse
+
+\define@choicekey+[BG]{background}{pages}[\val\nr]{all,some}{%
+ \ifcase\nr\relax
+ \bg@somefalse
+ \or
+ \bg@sometrue
+ \fi
+}{%
+ \PackageWarning{background}{erroneous input ignored}%
+}
+
+\define@choicekey+[BG]{background}{placement}[\val\nr]{center,bottom,top}{%
+ \ifcase\nr\relax
+ \renewcommand\Background@Position{current page.center}%
+ \renewcommand\Background@Anchor{}%
+ \renewcommand\Background@Angle{60}
+ \or
+ \renewcommand\Background@Position{current page.south}%
+ \renewcommand\Background@Anchor{above}%
+ \renewcommand\Background@Angle{0}%
+ \or
+ \renewcommand\Background@Position{current page.north}%
+ \renewcommand\Background@Anchor{below}%
+ \renewcommand\Background@Angle{0}%
+ \fi
+}{%
+ \PackageWarning{background}{erroneous input ignored}%
+}
+\define@boolkey+[BG]{background}{firstpage}{%
+ \ifBG@background@firstpage
+ \bg@sometrue%
+ \AtBeginDocument{\BgThispage}%
+ \else
+ \bg@somefalse%
+ \fi
+}{%
+ \PackageWarning{background}{erroneous input ignored}%
+}
+
+\DeclareOptionX[BG]<background>{all}{\bg@somefalse}
+\DeclareOptionX[BG]<background>{some}{\bg@sometrue}
+\DeclareOptionX[BG]<background>{center}{%
+ \renewcommand\Background@Position{current page.center}%
+ \renewcommand\Background@Anchor{}%
+ \renewcommand\Background@Angle{60}}
+\DeclareOptionX[BG]<background>{bottom}{%
+ \renewcommand\Background@Position{current page.south}%
+ \renewcommand\Background@Anchor{above}%
+ \renewcommand\Background@Angle{0}%
+ \renewcommand\Background@Scale{8}}
+\DeclareOptionX[BG]<background>{top}{%
+ \renewcommand\Background@Position{current page.north}%
+ \renewcommand\Background@Anchor{below}%
+ \renewcommand\Background@Angle{0}%
+ \renewcommand\Background@Scale{8}}
+
+
+\ExecuteOptions{all,center}
+
+
+\DeclareOptionX*{\PackageWarningNoLine{background}{Option '\CurrentOption' ignored}}
+
+\ExecuteOptionsX[BG]<background>{%
+ firstpage=false,
+ contents=Draft,%
+ color=red!45,%
+ angle=60,%
+ opacity=0.5,%
+ scale=10,%
+ position=current page.center,%
+ anchor={},%
+ nodeanchor={center},%
+ hshift=0pt,%
+ vshift=0pt%
+}
+
+\ProcessOptionsX[BG]<background>
+\DeclareRobustCommand*\backgroundsetup[1]{%
+ \setkeys[BG]{background}{#1}
+}
+
+\newcommand\bg@material{%
+ \begin{tikzpicture}[remember picture,overlay,scale=\Background@Scale]
+ \node[
+ rotate=\Background@Angle,
+ scale=\Background@Scale,
+ opacity=\Background@Opacity,
+ anchor=\Background@NodeAnchor,
+ xshift=\Background@HShift,
+ yshift=\Background@VShift,
+ color=\Background@Color,
+ inner sep=0pt
+ ]
+ at (\Background@Position) [\Background@Anchor]
+ {\Background@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
+
+\newcommand\SetBgContents[1]{%
+ \def\Background@Contents{#1}}
+\newcommand\SetBgAngle[1]{%
+ \def\Background@Angle{#1}}
+\newcommand\SetBgColor[1]{%
+ \def\Background@Color{#1}}
+\newcommand\SetBgScale[1]{%
+ \def\Background@Scale{#1}}
+\newcommand\SetBgVshift[1]{%
+ \def\Background@VShift{#1}}
+\newcommand\SetBgHshift[1]{%
+ \def\Background@HShift{#1}}
+\newcommand\SetBgPosition[1]{%
+ \def\Background@Position{#1}}
+\newcommand\SetBgAnchor[1]{%
+ \def\Background@Anchor{#1}}
+\newcommand\SetBgOpacity[1]{%
+ \def\Background@Opacity{#1}}
+
+\let\BgMaterial\bg@material
+
+\AtEndDocument{\clearpage}
+\endinput
+%%
+%% End of file `background.sty'.