Komaclass scrbook 中的 Flipbook 影像放置

Question

我想在文件 ( scrbook) 的右上角或右下角添加活頁簿。我已經設法在所有頁面上插入文件名中數量不斷增加的圖片。只是提一下：Komaclasses 抱怨fancyhdr這就是我不想使用它的原因。這同樣適用於自行flipbook載入的套件fancyhdr。

我很難找到正確的位置。考慮遵循 MWE 並查看編譯結果：

\documentclass{scrbook}
\usepackage{graphicx}
\usepackage{showframe}
\usepackage{picture}
\usepackage{scrlayer-scrpage}

\makeatletter
\rohead*{%
  \if@mainmatter
  \begin{picture}(-\marginparsep,\headheight)
    \put(0,-\headsep){\includegraphics[width=\marginparwidth,height=37.4pt]{example-image-a}}
  \end{picture}
  \else\fi
}
\makeatother

\begin{document}
\mainmatter
\chapter{title}
\begin{description}
  \item[headheight] \the\headheight 
  \item[headsep] \the\headsep 
  \item[marginparwidth] \the\marginparwidth 
  \item[marginparsep] \the\marginparsep 
\end{description}

\paragraph{Intended size and placement of flipbook image:}
\begin{itemize}
  \item width of image = marginparwidth
  \item height of image = headsep + headheight
  \item lower left corner of image should be at the top left corner of the margin notes
    box (compare showframe)
  \item Alternative placement: top left corner of image should be at the lower
    left corner of the margin notes box
\end{itemize}
\end{document}

我剩下的問題是如何在不迭代圖片環境和 put 命令的值的情況下放置圖像。作為獎勵，我怎樣才能避免Package scrlayer-scrpage Warning: \headheight too low.

Answer 1

我會為活頁簿聲明一個自己的圖層，可以將其添加到頁面樣式scrheadings和plain.scrheadings.然後您仍然可以將\ohead和\rohead用於其他內容。

\documentclass{scrbook}
\usepackage{graphicx}
\usepackage{showframe}
\usepackage{picture}

\usepackage{scrlayer-scrpage}
\makeatletter
\DeclareNewLayer[
  background,
  oddpage,
  textarea,
  addhoffset=\textwidth+\marginparsep,
  width=\marginparwidth,
  height=\headsep+\headheight,
  align=b,
  mode=picture,
  contents={%
    \if@mainmatter
      \putLL{\includegraphics[width=\layerwidth,height=\layerheight]{example-image-a}}%
    \fi
  }
]{flipbook.odd}
\makeatother

\AddLayersToPageStyle{plain.scrheadings}{flipbook.odd}
\AddLayersToPageStyle{scrheadings}{flipbook.odd}

\begin{document}
\mainmatter
\chapter{title}
\begin{description}
  \item[headheight] \the\headheight 
  \item[headsep] \the\headsep 
  \item[marginparwidth] \the\marginparwidth 
  \item[marginparsep] \the\marginparsep 
\end{description}

\paragraph{Intended size and placement of flipbook image:}
\begin{itemize}
  \item width of image = marginparwidth
  \item height of image = headsep + headheight
  \item lower left corner of image should be at the top left corner of the margin notes
    box (compare showframe)
  \item Alternative placement: top right corner of image should be at the lower
    left corner of the margin notes box
\end{itemize}
\end{document}