如何使用 xwatermark 在奇数页面上添加不同的水印？

Question

我想要一个透明的前景水印，该水印对于偶数页和奇数页会有所不同，并且不会渲染底层内容（例如文本和图像），这是无效的。可以吗？

梅威瑟：

\documentclass[]{article}
\usepackage[printwatermark]{xwatermark}
\usepackage{tikz}
\usepackage{graphicx}
\usepackage{pdfpages}
\pagestyle{empty}
\usepackage{hyperref}
\hypersetup{
    colorlinks=true, %set true if you want colored links
    linktoc=all,     %set to all if you want both sections and subsections linked
    linkcolor=blue,  %choose some color if you want links to stand out
}

\newsavebox\mybox
\savebox\mybox{\tikz[color=red,opacity=0.3]\node{BSFU};}
\newwatermark*[
  allpages,
  angle=45,
  scale=12,
  xpos=-20,
  ypos=15
]{\usebox\mybox}
\begin{document}

\includepdf[pages=-,pagecommand={\mybox}]{output}
\end{document}

Answer 1

下面将使用 LaTeX 的内置 shipout 钩子为您的水印放置两个不同的框，基于 -counterpage是偶数还是奇数。

\documentclass[]{article}

\usepackage{tikz}
\AddToHook{shipout/foreground}
  {%
    \put(0.5\paperwidth,-0.5\paperheight){\mywatermark}%
  }
\newcommand*\mywatermark
  {%
    \ifodd\value{page}%
      \usebox\mywatermarkboxODD
    \else
      \usebox\mywatermarkboxEVEN
    \fi
  }
\newsavebox\mywatermarkboxEVEN
\newsavebox\mywatermarkboxODD
\tikzset{mywatermark/.style={color=red,opacity=0.3,font=\huge,rotate=#1}}
\AtBeginDocument
  {%
    \sbox\mywatermarkboxODD
      {\makebox[0pt]{\tikz\node[mywatermark=45]{BSFU};}}%
    \sbox\mywatermarkboxEVEN
      {\makebox[0pt]{\tikz\node[mywatermark=-45]{BSFU};}}%
  }

\usepackage{duckuments}

\begin{document}
\duckument
\end{document}