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Beamer 的“撕页”装饰

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Beamer 的“撕页”装饰

我是 Basilio，我使用 stackexchange 已经有一段时间了，它当然非常有用。这是我的第一个问题：在主题中 fancyhdr 中水平线的替代品 用户 Gonzalo Medina 介绍了 JLDiaz 开发的“撕页”装饰。是否也可以将其用作投影仪中幻灯片的标题？

非常感谢，Basilio

答案1

这是一个可能的解决方案，在background模板中嵌入相关代码：

\documentclass{beamer}

\usepackage{lmodern,tikz,tikzpagenodes}

\usetikzlibrary{decorations.pathmorphing,calc,shadows.blur,shadings}
\pgfmathsetseed{1}% do not change this value
% if you change it, please set random offsets accordingly

% http://tex.stackexchange.com/a/113963/13304

\pgfdeclaredecoration{irregular fractal line}{init}
{
  \state{init}[width=\pgfdecoratedinputsegmentremainingdistance]
  {
    \pgfpathlineto{\pgfpoint{random*\pgfdecoratedinputsegmentremainingdistance}{(random*\pgfdecorationsegmentamplitude-0.02)*\pgfdecoratedinputsegmentremainingdistance}}
    \pgfpathlineto{\pgfpoint{\pgfdecoratedinputsegmentremainingdistance}{0pt}}
  }
}

\tikzset{
   paper/.style={draw=black!10, blur shadow, shade=bilinear interpolation,
                 lower left=black!20, upper left=black!15, upper right=white, lower right=black!10},
   irregular border/.style={decoration={irregular fractal line, amplitude=0.2},
           decorate,
     },
   ragged border/.style={ decoration={random steps, segment length=7mm, amplitude=2mm},
           decorate,
   }
}

% we have to use the background template
\setbeamertemplate{background}{%
% test to avoid having the effect in title page
\ifnum\thepage>1%
\begin{tikzpicture}
  \fill[orange!30]
        decorate[irregular border]{decorate{decorate{decorate{decorate[ragged border]{
        ($(current page header area.south east-|current page.east) - (0, random*90mm)$) -- ($(current page header area.south west-|current page.west) - (0, random*52mm)$)
        }}}}}
        -- (current page.north west) -- (current page.north east) -- cycle;
\end{tikzpicture}%
\fi%
}%

\begin{document}

\begin{frame}
\titlepage
\end{frame}

\begin{frame}{Title}
hello
\end{frame}

\end{document}

结果：

在此处输入图片描述

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