13-4-2.tex

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% 13-4-2.tex 用 pdfLaTeX 处理

\documentclass[table]{beamer}

\mode<presentation>
{
  \usetheme{default}
  % 可供选择的主题参见 beameruserguide.pdf, 第 134 页起
  % 无导航条的主题: Bergen, Boadilla, Madrid, Pittsburgh, Rochester;
  % 有树形导航条的主题: Antibes, JuanLesPins, Montpellier;
  % 有目录竖条的主题: Berkeley, PaloAlto, Goettingen, Marburg, Hannover;
  % 有圆点导航条的主题: Berlin, Dresden, Darmstadt, Frankfurt, Singapore, Szeged;
  % 有节与小节导航条的主题: Copenhagen, Luebeck, Malmos, Warsaw

  \setbeamercovered{transparent}
  % 如果取消上一行的注解 %, 就会使得被覆盖部分变得透明(依稀可见)
}

\usepackage{times}
\usepackage{pifont}

\begin{document}
\begin{frame}
\begin{itemize}
\item<1-| alert@1> First point.
\item<2-| alert@2> Second point.
\item<3-| alert@3> Third point.
\end{itemize}
\end{frame}

\begin{frame}
\begin{itemize}[<+-| alert@+>]
\item First point.
\item Second point.
\item Third point.
\end{itemize}
\end{frame}

\begin{frame}
\begin{align}
  A &= B \\
    \uncover<2->{&= C \\}
    \uncover<3->{&= D}
\end{align}
\end{frame}

\begin{frame}
\begin{align}
  A &= B \\
    \uncover<2->{&= C \\}
    \uncover<3->{&= D \\}
    \notag
  \end{align}
\vspace{-1.5em}
\end{frame}

\begin{frame}
\rowcolors[]{1}{blue!20}{blue!10}
\begin{tabular}{l!{\vrule}cccc}
  Class & A & B & C & D \\\hline
  X     & 1 & 2 & 3 & 4 \\\pause
  Y     & 3 & 4 & 5 & 6 \\\pause
  Z     & 5 & 6 & 7 & 8
\end{tabular}
\end{frame}

\begin{frame}
\rowcolors[]{1}{blue!20}{blue!10}
\begin{tabular}{l!{\vrule}c<{\onslide<2->}c<{\onslide<3->}c<{\onslide<4->}c<{\onslide}c}
  Class & A & B & C & D \\
  X     & 1 & 2 & 3 & 4 \\
  Y     & 3 & 4 & 5 & 6 \\
  Z     & 5 & 6 & 7 & 8
\end{tabular}
\end{frame}

\newenvironment{ballotenv}
{\only{%
  \setbeamertemplate{itemize item}{\ding{56}}%
  \setbeamertemplate{itemize subitem}{\small\ding{56}}%
  \setbeamertemplate{itemize subsubitem}{\footnotesize\ding{56}}}}
{}

\setbeamertemplate{itemize item}{\ding{52}}
\setbeamertemplate{itemize subitem}{\small\ding{52}}
\setbeamertemplate{itemize subsubitem}{\footnotesize\ding{52}}

\begin{frame}
\begin{itemize}
\item<1-| ballot@1> First point.
\item<2-| ballot@2> Second point.
\item<3-| ballot@3> Third point.
\end{itemize}
\end{frame}

\begin{frame}
\begin{itemize}[<+-| ballot@+>]
\item First point.
\item Second point.
\item Third point.
\end{itemize}
\end{frame}
\end{document}