幻灯片上我们所处位置的“指示器”

Question

我有点好奇：有些 Beamer 主题（例如，Ilmenau）有“指示器”来指示我们在幻灯片上的位置（我不知道正确的术语是什么），还有一些球代表幻灯片的数量和当前幻灯片。其他主题（例如，PaloAlto）没有。有什么方法可以将其添加到任何主题中吗？

---

我想在顶部添加小框架。

\documentclass{beamer}

\usepackage{tikz}

\title{Os Teoremas de Philip Hall e uma caracterização para Grupos Solúveis}
\author[Lucas Corrêa Lopes]{Lucas Corrêa Lopes\\ {\small Orientador: André Luiz Martins Pereira}}
\date{}
\institute{Unversidade Federal Rural do Rio de Janeiro}

%Tema 1:

\usetheme{PaloAlto}
\logo{\includegraphics[scale=0.26]{logo_ufrrj(1).png} }
\setbeamercolor{logo}{bg=white}
\usecolortheme{orchid}
\usefonttheme{serif}

\begin{document}

\frame{\titlepage}

\end{document}

Answer 1

您可以将微型框架导航添加到标题：

\documentclass{beamer}

\usepackage{tikz}

\title{Os Teoremas de Philip Hall e uma caracterização para Grupos Solúveis}
\author[Lucas Corrêa Lopes]{Lucas Corrêa Lopes\\ {\small Orientador: André Luiz Martins Pereira}}
\date{}
\institute{Unversidade Federal Rural do Rio de Janeiro}

%Tema 1:

\usetheme{PaloAlto}
\logo{\includegraphics[scale=0.26]{example-image-duck}}
\setbeamercolor{logo}{bg=white}
\usecolortheme{orchid}
\usefonttheme{serif}

\makeatletter
\setbeamertemplate{headline}{%
  \begin{beamercolorbox}[wd=\paperwidth]{frametitle}
    \ifx\beamer@sidebarside\beamer@lefttext%
    \else%
      \hfill%
    \fi%
    \ifdim\beamer@sidebarwidth>0pt%  
      \usebeamercolor[bg]{logo}%
      \vrule width\beamer@sidebarwidth height \beamer@headheight%
      \hskip-\beamer@sidebarwidth%
      \hbox to \beamer@sidebarwidth{\hss\vbox to
        \beamer@headheight{\vss\hbox{\color{fg}\insertlogo}\vss}\hss}%
    \else%
      \vrule width0pt height \beamer@headheight%  
    \fi%
    \begin{minipage}[b][\beamer@headheight][c]{\dimexpr\paperwidth-\beamer@sidebarwidth}%
            \insertnavigation{\dimexpr\paperwidth-\beamer@sidebarwidth}
    \end{minipage}%
  \end{beamercolorbox}
}
\makeatother

\begin{document}

\section{title}
\subsection{title}
\begin{frame}
\end{frame}

\section{title}
\subsection{title}
\begin{frame}
\end{frame}

\end{document}