![投影机中非圆形块的阴影](https://linux22.com/image/290238/%E6%8A%95%E5%BD%B1%E6%9C%BA%E4%B8%AD%E9%9D%9E%E5%9C%86%E5%BD%A2%E5%9D%97%E7%9A%84%E9%98%B4%E5%BD%B1.png)
我的问题很简单:是否可以在投影机中为非圆形块添加阴影?
我一直在尝试:
\setbeamertemplate{blocks}[rounded=false][shadow=true]
但没有成功。我使用的是马尔堡主题。这是序言代码:
\documentclass[serif]{beamer}
\usepackage[utf8]{inputenc}
\usepackage{graphicx}
\usepackage{epstopdf}
\usepackage[spanish]{babel}
\usepackage{mathpazo}
\linespread{1.05}
\author{Lorem ipsum}
\title{LOrem ipsum}
\setbeamertemplate{navigation symbols}{}
\usetheme[hideallsubsections,left,width=2cm]{Marburg}
\usecolortheme{rose}
\setbeamercolor{titlelike}{bg=structure,fg=white}
\logo{\includegraphics[height=1.5cm]{../Fotos/Logo.png}}
\setbeamertemplate{sidebar left}{
\begin{minipage}{2cm}
\centering
\vspace{\baselineskip}
\insertlogo
\vspace{\baselineskip}
\color{white}{\insertshorttitle[width={2cm},center,respectlinebreaks]}
\insertshortauthor[width={2cm},center,respectlinebreaks] \vspace{\baselineskip}
\insertverticalnavigation{2cm}
\vspace{10\baselineskip}
\insertframenumber / \inserttotalframenumber
\end{minipage}
}
\begin{document}
...
提前致谢,
查理
答案1
不幸的是,这在本机上并不容易beamer
(但有一种使用外部工具的简单方法可以实现它),因为阴影只应用于圆角框(使用构建beamerboxesrounded
),而不应用于非圆角框(使用单独构建beamercolorbox
)。
作为替代方案,我在这里为您提供一种可能性,使用tcolorbox
包中定义了模拟beamer
类所定义的块,但添加了阴影。在下面的例子中,我展示了如何轻松地定义适当的样式并为和构建阴影exampleblock
克隆alertblock
:
\documentclass[]{beamer}
\usepackage{mathpazo}
\usepackage[many]{tcolorbox}
\linespread{1.05}
\usetheme[hideallsubsections,left,width=2cm]{Marburg}
\usefonttheme{serif}
\usecolortheme{rose}
\setbeamercolor{titlelike}{bg=structure,fg=white}
\setbeamertemplate{sidebar left}{%
\begin{minipage}{2cm}
\centering
\vspace{\baselineskip}
\insertlogo%
\vspace{\baselineskip}
\color{white}{\insertshorttitle[width={2cm},center,respectlinebreaks]}%
\insertshortauthor[width={2cm},center,respectlinebreaks] \vspace{\baselineskip}
\insertverticalnavigation{2cm}
\vspace{10\baselineskip}
\insertframenumber / \inserttotalframenumber
\end{minipage}%
}
\makeatletter
\tikzset{beamer@color/.style={top color=\kvtcb@colback,bottom color=\kvtcb@colback}}
\makeatother
\tcbset{
tcbeamer/.style={
beamer,
width=\textwidth+3pt,
enlarge left by=-3pt,
bottom=0pt,
top=0pt,
left=1pt,
right=1pt,
arc=0pt,
outer arc=0pt,
toptitle=0pt,
bottomtitle=-1pt,
}
}
\newenvironment<>{tcexampleblock}[1]
{\begin{actionenv}#2\begin{tcolorbox}[
adjusted title=#1,
tcbeamer,
colback=block body example.bg,
colframe=block title example.bg,
fonttitle=\large\color{block title example.fg}
]
}
{\end{tcolorbox}\end{actionenv}}
\newenvironment<>{tcalertblock}[1]
{\begin{actionenv}#2\begin{tcolorbox}[
adjusted title=#1,
tcbeamer,
colback=block body alerted.bg,
colframe=block title alerted.bg,
fonttitle=\large\color{block title alerted.fg},
adjusted title=#1,
]
}
{\end{tcolorbox}\end{actionenv}}
\begin{document}
\begin{frame}
\begin{exampleblock}<1->{Test exampleblock}
This is a block provided by the \texttt{beamer} class.
\end{exampleblock}
\begin{tcexampleblock}<2->{Test tcexampleblock}
This is a block provided by the \texttt{tcolorbox} package.
\end{tcexampleblock}
\begin{alertblock}<3->{Test alertblock}
This is a block provided by the \texttt{beamer} class.
\end{alertblock}
\begin{tcalertblock}<4-6>{Test tcalertblock}
This is a block provided by the \texttt{tcolorbox} package.
\end{tcalertblock}
\end{frame}
\end{document}
结果展示了新的覆盖感知环境的实际运行:
请注意,serif 类选项已过时,因此
\documentclass[serif]{beamer}
你应该使用
\usefonttheme{serif}
答案2
您可以使用新的 tcolorbox 内部主题(https://www.ctan.org/pkg/beamertheme-tcolorbox)。此主题有一个选项可以打开独立于圆角/尖角的阴影:\useinnertheme[shadow]{tcolorbox}
完整示例:
\documentclass{beamer}
\usepackage[utf8]{inputenc}
\usepackage{graphicx}
\usepackage{epstopdf}
\usepackage[spanish]{babel}
\usepackage{mathpazo}
\linespread{1.05}
\author{Lorem ipsum}
\title{LOrem ipsum}
\setbeamertemplate{navigation symbols}{}
\usetheme[hideallsubsections,left,width=2cm]{Marburg}
\usecolortheme{rose}
\setbeamercolor{titlelike}{bg=structure,fg=white}
\logo{\includegraphics[height=1.5cm]{example-image-duck}}
\setbeamertemplate{sidebar left}{
\begin{minipage}{2cm}
\centering
\vspace{\baselineskip}
\insertlogo
\vspace{\baselineskip}
\color{white}{\insertshorttitle[width={2cm},center,respectlinebreaks]}
\insertshortauthor[width={2cm},center,respectlinebreaks] \vspace{\baselineskip}
\insertverticalnavigation{2cm}
\vspace{10\baselineskip}
\insertframenumber / \inserttotalframenumber
\end{minipage}
}
\useinnertheme[shadow]{tcolorbox}
\begin{document}
\begin{frame}
\begin{block}{title}
content...
\end{block}
\end{frame}
\end{document}