在 tikz 中将矩形对齐到节点上方

Question

我刚刚开始使用 tikz，并尝试在每页中添加页眉和页脚。我有此代码，但这是我的（非常小的）问题：

\newcommand\Footer{%
\begin{tikzpicture}[remember picture, overlay]
\node[above, yshift=-3] (footer) at (current page.south) {\includegraphics[width=\paperwidth]{footer.png}};
\draw [fill=otherdarkblue, draw=none] (0.1,0.1) rectangle (\paperwidth,0.2); % I want this to be just above the footer and centered horizontally
\end{tikzpicture}%
}

我希望矩形绘制在页脚节点正上方（矩形的底部应与页脚的顶部相对应）并相对于页脚水平居中。

Answer 1

像这样？

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{calc}
\usepackage{eso-pic}
\newcommand\Footer{%
\begin{tikzpicture}[remember picture, overlay]
\node[anchor=south,inner sep=0pt, outer sep=0pt] (footer) at (current page.south) {\includegraphics[width=\paperwidth,height=1cm]{example-image}};
\node [fill=blue, draw=none,minimum width=\paperwidth,inner ysep=0.1cm,outer sep=0pt] at (footer.north){}; % I want this to be just above the footer and centered horizontally
\end{tikzpicture}%
}%
\AddToShipoutPictureBG{%
   \AtPageLowerLeft{\put(0,0){\Footer}}%
   }

\begin{document}
Some text
\clearpage
Some text again
\end{document}

与包相同background：

\documentclass{article}
\usepackage{background}
\usetikzlibrary{calc}
\newcommand\Footer{%
\begin{tikzpicture}[remember picture, overlay]
\node[anchor=south,inner sep=0pt, outer sep=0pt] (footer) at (current page.south) {\includegraphics[width=\paperwidth,height=1cm]{example-image}};
\node [fill=blue, draw=none,minimum width=\paperwidth,inner ysep=0.1cm,outer sep=0pt] at (footer.north){}; % I want this to be just above the footer and centered horizontally
\end{tikzpicture}%
}%
\backgroundsetup{
angle=0,
scale=1,
opacity=1,
contents={\Footer}
}

\begin{document}
Some text
\clearpage
Some text again
\end{document}