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不使用任何宏来计算深度

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不使用任何宏来计算深度

对于 robust-externalize 库，在新文件中写入类似以下内容：

\newsavebox\boxRobExt%
\savebox{\boxRobExt}{%
  my content
}%
\usebox{\boxRobExt}%
% some code to write `\the\dp\boxRobExt` into an auxiliary file

为了测量的深度my content。这很好用，但由于my content是宏，它会对其进行标记，并使 tikz matrices 等命令失败。因此，我需要使用ampersand replacement可能不太实用的。

有没有一种解决方案可以测量内容的深度而不会出现此问题？重要的是：我希望代码尽可能通用，特别是如果它使它适用于 tikz 但破坏其他东西，那就不是很好（但可能仍然比没有好）。

梅威瑟：

\documentclass[,margin=30cm]{standalone}
 \usepackage {tikz}
% most packages must be loaded before hyperref
% so we typically want to load hyperref here

% some packages must be loaded after hyperref

\begin{document}%
%% We save the height/depth of the content by using a savebox:
\newwrite\writeRobExt%
\immediate\openout\writeRobExt=\jobname-out.tex%
%
\newsavebox\boxRobExt%
\savebox{\boxRobExt}{%
  \begin{tikzpicture}
    \node [matrix,fill=red!20,draw=blue,very thick] (my matrix) at (2,1)
    {
      \draw (0,0)   circle (4mm); & \node[rotate=10] {Hello};        \\
      \draw (0.2,0) circle (2mm); & \fill[red]   (0,0) circle (3mm); \\
    };
  \end{tikzpicture}
}%
\usebox{\boxRobExt}%
\immediate\write\writeRobExt{%
  \string\def\string\robExtWidth{\the\wd\boxRobExt}%
  \string\def\string\robExtHeight{\the\ht\boxRobExt}%
  \string\def\string\robExtDepth{\the\dp\boxRobExt}%
}%
%

\end{document}

答案1

\savebox、\usebox、lrbox是 LaTeX 的宏。如果不想使用宏，则可以直接使用 TeX 基元。即\setbox和。因为基元会清空 TeX 内存中的框，所以在 之后\box使用。\box\boxRobExt\write\box

\begin{document}%
\newwrite\writeRobExt%
\immediate\openout\writeRobExt=\jobname-out.tex%

\newbox\boxRobExt
\setbox\boxRobExt=\hbox{%
  \begin{tikzpicture}
    \node [matrix,fill=red!20,draw=blue,very thick] (my matrix) at (2,1)
    {
      \draw (0,0)   circle (4mm); & \node[rotate=10] {Hello};        \\
      \draw (0.2,0) circle (2mm); & \fill[red]   (0,0) circle (3mm); \\
    };
  \end{tikzpicture}%
}
\immediate\write\writeRobExt{%
  \string\def\string\robExtWidth{\the\wd\boxRobExt}%
  \string\def\string\robExtHeight{\the\ht\boxRobExt}%
  \string\def\string\robExtDepth{\the\dp\boxRobExt}%
}%
\box\boxRobExt


\end{document}

答案2

解决方案是使用\begin{lrbox}{\boxRobExt}<stuff with &>\end{lrbox}，感谢 Qrrbrbirlbel！

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