从框架环境重新绘制投影仪导航（\insertnavigation）

Question

我需要根据概览图中突出显示的条目突出显示我的 Beamer 导航的特定条目。为此，我需要从之内框架环境。问题：当前解决方案需要手动调整对齐方式。这可以被认为是黑客行为。一个更干净的解决方案精确的非常感谢原始位置的对齐。提前感谢您的想法和建议！

\documentclass[t]{beamer}

\usetheme{Singapore}
\useoutertheme{miniframes}

\usepackage{tikz}
\usetikzlibrary{calc}

\begin{document}

\section{Section}
\subsection{Subsection}

\begin{frame}[c]
\frametitle{Title}
\framesubtitle{Subtitle}
%
\begin{beamerboxesrounded}[]{}
The intention is to redraw the navigation from \emph{within} the frame environment to e.\,g. allow highlights of specific sections. The problem: The current solution needs a manual adjustment of the alignment. What can be considered as hacky. A cleaner solution for the \emph{exact} alignment at the original position would be highly appreciated.
\end{beamerboxesrounded}
%
\begin{tikzpicture}[remember picture,overlay]%
{\node[anchor=north west,text width=\paperwidth] at ($(current page.north west) + (0ex,0ex)$) {%
\begin{beamercolorbox}[ignorebg,wd=\paperwidth]{section in head/foot}%
\usebeamerfont{headline}\insertnavigation{\paperwidth}%
\end{beamercolorbox}};}%
\end{tikzpicture}
%
\end{frame}

\end{document}

Answer 1

部分解决方案

下面的代码将手动间距减少到仅一维，但除非您使用某种技术（例如\tikzmark实际记录导航栏的位置），否则调整垂直方向的间距似乎是必要的，因为原始导航栏不在框架的最顶部。

miniframe 主题中标题的原始定义是

\defbeamertemplate*{headline}{miniframes theme}
{%
  \begin{beamercolorbox}[colsep=1.5pt]{upper separation line head}
  \end{beamercolorbox}
  \begin{beamercolorbox}{section in head/foot}
    \vskip2pt\insertnavigation{\paperwidth}\vskip2pt
  \end{beamercolorbox}%
  \ifbeamer@theme@subsection%
    \begin{beamercolorbox}[colsep=1.5pt]{middle separation line head}
    \end{beamercolorbox}
    \begin{beamercolorbox}[ht=2.5ex,dp=1.125ex,%
      leftskip=.3cm,rightskip=.3cm plus1fil]{subsection in head/foot}
      \usebeamerfont{subsection in head/foot}\insertsubsectionhead
    \end{beamercolorbox}%
  \fi%
  \begin{beamercolorbox}[colsep=1.5pt]{lower separation line head}
  \end{beamercolorbox}
}

如你所见，这个定义包括

• 手动间距，例如\vskip2pt
• 框架顶部的分隔线和
• 颜色框的边距

这个空间必须以某种方式得到补偿。

\documentclass[t]{beamer}

\usetheme{Singapore}
\useoutertheme{miniframes}

\usepackage{tikz}
\usetikzlibrary{calc,positioning}

\begin{document}

\section{Section}
\subsection{Subsection}

\section{Section}
\subsection{Subsection}

\begin{frame}[c]
\frametitle{Title}
\framesubtitle{Subtitle}
%
\begin{beamerboxesrounded}[]{}
The intention is to redraw the navigation from \emph{within} the frame environment to e.\,g. allow highlights of specific sections. The problem: The current solution needs a manual adjustment of the alignment. What can be considered as hacky. A cleaner solution for the \emph{exact} alignment at the original position would be highly appreciated.
\end{beamerboxesrounded}
\begin{tikzpicture}[remember picture,overlay]%
{\node[text width=\paperwidth] at (current page.north) {%
    \vskip13.25pt%
    \usebeamerfont{headline}\insertnavigation{\paperwidth}%
};
}%
\end{tikzpicture}
\end{frame}

\end{document}