华沙的 Smoothbars 重叠

Question

在 beamer 中使用主题 Warsaw 时\useoutertheme[subsection=false]{smoothbars}，我发现框架标题和标题下部之间出现了令人讨厌的重叠

我的代码基本上

\documentclass[cosmer,green,compress,9pt]{beamer}

\mode<presentation>{}

\usetheme{Warsaw}
\useoutertheme[subsection=false]{smoothbars}
\usefonttheme{serif}

\begin{document}
 % Stuff
\end{document}

你知道这里的问题出在哪里吗？

Answer 1

可以通过更改阴影范围来修复此问题。我已从中复制了阴影命令beamerouterthemesmoothbars.sty并对其进行了修改以减少重叠。更改已标记。

\documentclass[cosmer,green,compress,9pt]{beamer}

\mode<presentation>{}

\usetheme{Warsaw}
\useoutertheme[subsection=false]{smoothbars}
\usefonttheme{serif}

\makeatletter
\AtBeginDocument{
    % copied from beamerouterthemesmoothbars.sty
    \ifbeamer@sb@subsection
    \else
        % option "subsection" is set to false
        {
            \usebeamerfont*{headline} % to set length of "ex" unit correctly
            \pgfdeclareverticalshading{beamer@aboveframetitle}{\the\paperwidth}{%
                color(0ex)=(frametitle.bg);%
                %color(1ex)=(frametitle.bg);%           % original
                %color(2ex)=(section in head/foot.bg)   % original
                color(1ex)=(section in head/foot.bg)    % modified
            }
        }
    \fi
}
\makeatother

\begin{document}
    \section{s1}
    \frame{\frametitle{title}content}
    \subsection{ss1}
    \frame{\frametitle{title}content}
    \section{s2}
    \frame{\frametitle{title}content}
    \subsection{ss2}
    \frame{\frametitle{title}content}
    \frame{\frametitle{title}content}
\end{document}

输出：