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垂直对齐标题和副标题之间的分隔线

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垂直对齐标题和副标题之间的分隔线

我迫切地想要 (1) 垂直对齐标题页的标题和副标题，同时 (2) 在标题和副标题之间精确创建分隔线。这是我目前得到的结果： 在此处输入图片描述

分隔线的垂直空间显然太大了。但是如果我尝试摆弄\vskip或\vfill，该线不再垂直居中在标题和副标题之间。此图显示了标题和分隔线之间的正确间距（分隔线和副标题之间的间距明显不对）：

在此处输入图片描述

我也一直在努力让分隔线的长度与标题的实际宽度一样长。但这只是一个小问题。

这是我的 MWE：

\documentclass[leqno,hyperref={pdfpagemode=FullScreen},aspectratio=169]{beamer}

%%% Fußzeile: deutsches Datum, Autor:in, Folienzahl %%%
\makeatletter
\setbeamertemplate{footline}
{
    \leavevmode%
    \hbox{%
        \begin{beamercolorbox}[wd=.333333\paperwidth,ht=2.25ex,dp=1ex,left]{date}%
           \vspace{2.5pt}
            \usebeamerfont{date}\hspace*{3ex}
            \insertshortdate{}
        \end{beamercolorbox}%

        \begin{beamercolorbox}[wd=.333333\paperwidth,ht=2.25ex,dp=1ex,center]{author}%
           \vspace{2.5pt} \usebeamerfont{author}\insertshortauthor
        \end{beamercolorbox}

        \begin{beamercolorbox}[wd=.333333\paperwidth,ht=2.25ex,dp=1ex,right]{pageno}%
            \vspace{2.5pt} 
            \usebeamerfont{pageno}
            \insertframenumber{}\hspace*{7ex} 
        \end{beamercolorbox}}%
        \vskip0pt%
    }
    \makeatother

%%% Titelfolie %%%
\setbeamercolor{lower separation line head}{bg=blue}
\makeatletter
\setbeamertemplate{title page}{
  \begin{minipage}[b][\paperheight]{\textwidth}
    \centering  % <-- Center here
\vfill%
    \ifx\inserttitlegraphic\@empty\else\usebeamertemplate*{title graphic}\fi
    \vfill%
    \ifx\inserttitle\@empty\else\usebeamertemplate*{title}\fi\\
  \begin{beamercolorbox}[colsep=0.5pt,wd=\textwidth]{lower separation line head}
  \end{beamercolorbox}  \vfill%
    \ifx\insertsubtitle\@empty\else\usebeamertemplate*{subtitle}\fi \vfill%
    \usebeamertemplate*{title separator}
    \ifx\beamer@shortauthor\@empty\else\usebeamertemplate*{author}\fi
    \ifx\insertdate\@empty\else\usebeamertemplate*{date}\fi
    \ifx\insertinstitute\@empty\else\usebeamertemplate*{institute}\fi
    \vfill
    \vspace*{1mm}
  \end{minipage}
}

\setbeamertemplate{title}{
%  \raggedright%  % <-- Comment here
  \Huge\rmfamily\scshape{\inserttitle}%
  \par%
\
  \vspace*{0.5em}
}
\setbeamertemplate{subtitle}{
%  \raggedright%  % <-- Comment here
  \huge\rmfamily\scshape\insertsubtitle%
  \par%
  \vspace*{0.5em}
}
\makeatother



\author{Vitus Schäfftlein}
\title{This is quite a long and completely useless title}
\subtitle{And this is quite a long and completely useless subtitle}
\begin{document}
\begin{frame}
\titlepage
\end{frame}
\end{document}

有谁能帮助我吗？

答案1

您可以通过在我用 标记的两行中选择相同的值来对称地调整空间% here：

\documentclass[leqno,hyperref={pdfpagemode=FullScreen},aspectratio=169]{beamer}

%%% Fußzeile: deutsches Datum, Autor:in, Folienzahl %%%
\makeatletter
\setbeamertemplate{footline}
{
    \leavevmode%
    \hbox{%
        \begin{beamercolorbox}[wd=.333333\paperwidth,ht=2.25ex,dp=1ex,left]{date}%
           \vspace{2.5pt}
            \usebeamerfont{date}\hspace*{3ex}
            \insertshortdate{}
        \end{beamercolorbox}%

        \begin{beamercolorbox}[wd=.333333\paperwidth,ht=2.25ex,dp=1ex,center]{author}%
           \vspace{2.5pt} \usebeamerfont{author}\insertshortauthor
        \end{beamercolorbox}

        \begin{beamercolorbox}[wd=.333333\paperwidth,ht=2.25ex,dp=1ex,right]{pageno}%
            \vspace{2.5pt} 
            \usebeamerfont{pageno}
            \insertframenumber{}\hspace*{7ex} 
        \end{beamercolorbox}}%
        \vskip0pt%
    }
    \makeatother

%%% Titelfolie %%%
\setbeamercolor{lower separation line head}{bg=blue}
\makeatletter
\setbeamertemplate{title page}{
  \begin{minipage}[b][\paperheight]{\textwidth}
    \centering  % <-- Center here
\vfill%
    \ifx\inserttitlegraphic\@empty\else\usebeamertemplate*{title graphic}\fi
    \vfill%
    \ifx\inserttitle\@empty\else\usebeamertemplate*{title}\fi\\
    \vspace{0.25cm} % here
  \begin{beamercolorbox}[colsep=0.5pt,wd=\textwidth]{lower separation line head}
  \end{beamercolorbox}  
%    \vfill%
    \vspace*{0.25em} % here
    \ifx\insertsubtitle\@empty\else\usebeamertemplate*{subtitle}\fi \vfill%
    \usebeamertemplate*{title separator}
    \ifx\beamer@shortauthor\@empty\else\usebeamertemplate*{author}\fi
    \ifx\insertdate\@empty\else\usebeamertemplate*{date}\fi
    \ifx\insertinstitute\@empty\else\usebeamertemplate*{institute}\fi
    \vfill
    \vspace*{1mm}
  \end{minipage}
}

\setbeamertemplate{title}{
%  \raggedright%  % <-- Comment here
  \Huge\rmfamily\scshape{\inserttitle}%
}
\setbeamertemplate{subtitle}{
%  \raggedright%  % <-- Comment here
  \huge\rmfamily\scshape\insertsubtitle%
  \par%
  \vspace*{0.5em}
}
\makeatother



\author{Vitus Schäfftlein}
\title{This is quite a long and completely useless title}
\subtitle{And this is quite a long and completely useless subtitle}
\begin{document}
\begin{frame}
\titlepage
\end{frame}
\end{document}

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