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%% ****************************************************************************************************
%% Copyright 2024 by Mingyu Hsia <xiamyphys@gmail.com> *
%% *
%% This work may be distributed and/or modified under * ***** * * *
%% the conditions of the LaTeX Project Public License * ** * * *** * * *
%% * * ** * * * ** *
%% http://www.latex-project.org/lppl.txt * * * * ***** ** *
%% * * ** * * * * *
%% either version 1.3c of this license or any later ***** ** * * *** * * *
%% version. *
%% *
%% This work has the LPPL maintenance status `maintained'. *
%% *
%% The Current Maintainer of this work is Mingyu Hsia. *
%% *
%% This work consists of the files fadingimage.sty, *
%% and README.md. *
%% available at https://github.com/xiamyphys/FadingImage *
%% ****************************************************************************************************
\NeedsTeXFormat{LaTeX2e}[2020/10/01]
\ProvidesPackage{fadingimage}[2024/03/17/ v0.1d Package for adding fading full width picture at the top or bottom of a page.]
\RequirePackage{tikz,xcolor}
\usetikzlibrary{fadings}
\NewDocumentCommand{\UPFadingImage}{ s O{} m }{
\IfBooleanTF{#1}
{
\tikz[remember picture,overlay]
\node[below,inner sep=0pt,outer sep=auto] at (current page.north) {\includegraphics[width=\paperwidth,#2]{#3}};
}{
\tikz[remember picture,overlay]
\node[scope fading=south,below,inner sep=0pt,outer sep=auto] at (current page.north) {\includegraphics[width=\paperwidth,#2]{#3}};
}
}
\NewDocumentCommand{\LOWFadingImage}{ s O{} m }{
\IfBooleanTF{#1}
{
\tikz[remember picture,overlay]
\node[above,inner sep=0pt,outer sep=auto] at (current page.south) {\includegraphics[width=\paperwidth,#2]{#3}};
}{
\tikz[remember picture,overlay]
\node[scope fading=north,above,inner sep=0pt,outer sep=auto] at (current page.south) {\includegraphics[width=\paperwidth,#2]{#3}};
}
}
\NewDocumentCommand{\UPLOWFadingImage}{ s O{} m O{} m }{
\IfBooleanTF{#1}
{
\tikz[remember picture,overlay]{
\node[below,inner sep=0pt,outer sep=auto] at (current page.north) {\includegraphics[width=\paperwidth,#2]{#3}};
\node[above,inner sep=0pt,outer sep=auto] at (current page.south) {\includegraphics[width=\paperwidth,#4]{#5}};
}
}{
\tikz[remember picture,overlay]{
\node[scope fading=south,below,inner sep=0pt,outer sep=auto] at (current page.north) {\includegraphics[width=\paperwidth,#2]{#3}};
\node[scope fading=north,above,inner sep=0pt,outer sep=auto] at (current page.south) {\includegraphics[width=\paperwidth,#4]{#5}};
}
}
}
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