[Tex/LaTex] semiverbatim with tikz in beamer

beamertikz-pgf

I'm using semiverbatim with tikz in beamer. My following MWE throws error:

! Package tikz Error: Sorry, some package has redefined the meaning of
the math-mode dollar sign. This is incompatible with tikz and its calc
library and might cause unrecoverable errors.

Any idea to resolve this issue. Thanks in advance.

\documentclass{beamer}

\usepackage{csed}

\usepackage{tikz}
\usetikzlibrary{shapes}

\newif\ifshowanimation
% The slides with animations take a long time to process.
% They are omitted in handout mode.
\showanimationfalse

\newenvironment<>{exercise}{\begin{block}#1{Exercise}}{\end{block}}

\newenvironment<>{notes}{\begin{alertblock}#1{Notes}}{\end{alertblock}}

\newcommand*{\menu}[1]{\textbf{#1}}
\newcommand*{\menuitem}[1]{\,$\to$\,\textbf{#1}}

\definecolor{highlight1}{named}{yellow}
\definecolor{highlight2}{named}{pink}
\definecolor{highlight3}{named}{green}
\definecolor{highlight4}{named}{orange}
\definecolor{Red}{named}{red}
\definecolor{Blue}{named}{blue}

\pgfdeclareimage[width=0.95\textwidth]{backdrop}{images/background.jpg}
\pgfdeclareimage[width=1mm]{pointer}{images/pointer.png}
\pgfdeclareimage[width=0.18\textwidth]{startmenu}{images/startMenu.jpg}
\pgfdeclareimage[width=0.34\textwidth]{programsmenu}{images/programsMenu.jpg}
\pgfdeclareimage[width=0.495\textwidth]{submenu}{images/subMenu.jpg}
\pgfdeclareimage[width=0.608\textwidth]{latexmenu}{images/latexMenu.jpg}
\pgfdeclareimage[width=0.591\textwidth]{latexmenu2}{images/latexMenu2.png}
\pgfdeclareimage[width=0.591\textwidth]{cmd1}{images/cmd1.jpg}
\pgfdeclareimage[width=0.591\textwidth]{cmd2}{images/cmd2.jpg}
\foreach \x in {1,...,46}
{
  \pgfdeclareimage[width=0.84\textwidth]{tmkwin\x}{images/tmkwin-\x.jpg}
}
\pgfdeclareimage[width=0.75\textwidth]{saveAs1}{images/tex-28.jpg}
\pgfdeclareimage[width=0.75\textwidth]{saveAs2}{images/tex-30.jpg}
\pgfdeclareimage[width=0.75\textwidth]{saveAs3}{images/tex-32.jpg}
\pgfdeclareimage[width=0.75\textwidth]{saveAs4}{images/tex-35.jpg}
\pgfdeclareimage[width=0.75\textwidth]{saveAs5}{images/tex-36.jpg}
\pgfdeclareimage[width=0.75\textwidth]{saveAs6}{images/tex-37.jpg}


\begin{document}

\begin{frame}[fragile]
  \frametitle{A Simple Document}

\begin{example}
    \begin{semiverbatim}
        \textcolor<2>{Red}{\cs{documentclass}\annote<5-7>[offset=0.5in,voffset=1cm,pos=br,bg=highlight2]{[a4paper,12pt]}{Class options}\annote<4-7>[pos=br,bg=highlight1]{\marg{article}}{The class name.}}
        \vspace{-2\baselineskip}\alt<7>{\colorbox{highlight4}{\rmfamily Preamble}}{\strut}
        \textcolor<2>{Red}{\cs{begin}\marg{document}}
        \textcolor<3>{Blue}{\% This is a comment}
        \annote<6-7>[pos=cr,bg=highlight3,offset=0.4in]{\begin{tabular}{@{}l}
        This is   a simple\\
        document\cs{footnote}\marg{with a footnote}.\\
        \\
        This is a new paragraph.
        \end{tabular}}{The document.}
        \textcolor<2>{Red}{\cs{end}\marg{document}}
    \end{semiverbatim}
\end{example}

\end{frame}


\end{document}

Edited

csed can be obtained from here.

Best Answer

This was too long for a comment.

The error message is triggered by \tikz@ensure@dollar@catcode defined in the file tikz.code.tex typically found on .../tex/generic/pgf/frontendlayer/tikz/tikz.code.tex); one work-around is to disable the error message using

\makeatletter
\global\let\tikz@ensure@dollar@catcode=\relax
\makeatother

This might produce undesired results elsewhere in the document, but at least with your example code, it gives the desired result:

\documentclass{beamer}

\usepackage{tikz}
\usetikzlibrary{shapes}
\usepackage{csed}

\makeatletter
\global\let\tikz@ensure@dollar@catcode=\relax
\makeatother

\newif\ifshowanimation
% The slides with animations take a long time to process.
% They are omitted in handout mode.
%\showanimationfalse

\newenvironment<>{exercise}{\begin{block}#1{Exercise}}{\end{block}}

\newenvironment<>{notes}{\begin{alertblock}#1{Notes}}{\end{alertblock}}

\newcommand*{\menu}[1]{\textbf{#1}}
\newcommand*{\menuitem}[1]{\,$\to$\,\textbf{#1}}

\definecolor{highlight1}{named}{yellow}
\definecolor{highlight2}{named}{pink}
\definecolor{highlight3}{named}{green}
\definecolor{highlight4}{named}{orange}
\definecolor{Red}{named}{red}
\definecolor{Blue}{named}{blue}

\pgfdeclareimage[width=0.95\textwidth]{backdrop}{images/background.jpg}
\pgfdeclareimage[width=1mm]{pointer}{images/pointer.png}
\pgfdeclareimage[width=0.18\textwidth]{startmenu}{images/startMenu.jpg}
\pgfdeclareimage[width=0.34\textwidth]{programsmenu}{images/programsMenu.jpg}
\pgfdeclareimage[width=0.495\textwidth]{submenu}{images/subMenu.jpg}
\pgfdeclareimage[width=0.608\textwidth]{latexmenu}{images/latexMenu.jpg}
\pgfdeclareimage[width=0.591\textwidth]{latexmenu2}{images/latexMenu2.png}
\pgfdeclareimage[width=0.591\textwidth]{cmd1}{images/cmd1.jpg}
\pgfdeclareimage[width=0.591\textwidth]{cmd2}{images/cmd2.jpg}
\foreach \x in {1,...,46}
{
  \pgfdeclareimage[width=0.84\textwidth]{tmkwin\x}{images/tmkwin-\x.jpg}
}
\pgfdeclareimage[width=0.75\textwidth]{saveAs1}{images/tex-28.jpg}
\pgfdeclareimage[width=0.75\textwidth]{saveAs2}{images/tex-30.jpg}
\pgfdeclareimage[width=0.75\textwidth]{saveAs3}{images/tex-32.jpg}
\pgfdeclareimage[width=0.75\textwidth]{saveAs4}{images/tex-35.jpg}
\pgfdeclareimage[width=0.75\textwidth]{saveAs5}{images/tex-36.jpg}
\pgfdeclareimage[width=0.75\textwidth]{saveAs6}{images/tex-37.jpg}


\begin{document}

\begin{frame}
  \frametitle{A Simple Document}

\begin{example}
    \begin{semiverbatim}
        \textcolor<2>{Red}{\cs{documentclass}\annote<5-7>[offset=0.5in,voffset=1cm,pos=br,bg=highlight2]{[a4paper,12pt]}{Class options}\annote<4-7>[pos=br,bg=highlight1]{\marg{article}}{The class name.}}

        \vspace{-2\baselineskip}\alt<7>{\colorbox{highlight4}{\rmfamily Preamble}}{\strut}

        \textcolor<2>{Red}{\cs{begin}\marg{document}}

        \textcolor<3>{Blue}{\% This is a comment}

        \annote<6-7>[pos=cr,bg=highlight3,offset=0.4in]{\begin{tabular}{@{}l}
        This is   a simple\\
        document\cs{footnote}\marg{with a footnote}.\\
        \\
        This is a new paragraph.
        \end{tabular}}{The document.}

        \textcolor<2>{Red}{\cs{end}\marg{document}}
    \end{semiverbatim}
\end{example}

\end{frame}


\end{document}

enter image description here

As I said befor, this has the status of a long comment, not an answer, since it only disables the error message.

Related Solutions

[Tex/LaTex] Beamer reflections with pgf/tikz

I don't think that TikZ has support for copying contents. So the best idea I have is creating a command for the contents and then using that twice—the second time with appropriate transformations and fading applied. Here is a proof of concept:

\documentclass{article}
\pdfpageattr{/Group <</S /Transparency /I true /CS /DeviceRGB>>} 
\usepackage{tikz}
\usetikzlibrary{positioning,fadings}


\begin{document}
\newcommand\tikzcontents{
    \fill[red] (-1,-2) rectangle (1,0.5);
    \node (a) {first line};
    \node[below=of a] (b) {second line}; 
}

\begin{tikzpicture}
    \tikzcontents
    \begin{scope}[yshift=-4.5cm,yscale=-1,transform canvas,transform shape]
        \path[scope fading=south] (-1,-4) rectangle (1,0.5);
        \tikzcontents
    \end{scope}
\end{tikzpicture}
\end{document}

proof of concept

Be aware that not all pdf viewers have support for fadings. For example, Evince won't display them properly. The \pdfpageattr line is to work around a bug in Acrobat Reader (see “Using opacity in TikZ causes strange rendering in Acrobat”).

[Tex/LaTex] Rotate a node but not its content: the case of the ellipse decoration

The source of the difficulty is that ellipses are constructed in a particular way in TikZ. They are paths that start from the x-axis and proceed counter-clockwise around their centre. The vast majority of the time, the exact parametrisation doesn't matter. You appear to have found the one situation where it does!

In the actual question, you only want to be able to mirror the ellipse, and so draw it starting from the negative x-axis (the title of the question suggests a more flexible approach). That's actually not too hard since we can exploit the symmetry of the ellipse. The key is to provide it with a negative x-radius, since then it will start from the negative x-axis (and proceed clockwise, but we could correct for that by negating the y-radius as well). To do this, we interrupt the call from the node shape to the drawing command and flip the sign of the x-radius. The simplest way to do this is to redefine the \pgfpathellipse macro to do the negation and then call the original macro. The following code does this.

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{decorations,shapes,decorations.markings}
\makeatletter
\let\origpgfpathellipse=\pgfpathellipse
\def\revpgfpathellipse#1#2#3{%
  #2%
  \pgf@xa=-\pgf@x
  \origpgfpathellipse{#1}{\pgfqpoint{\pgf@xa}{0pt}}{#3}}
\makeatother

\tikzset{
  reversed ellipse/.style={
    ellipse,
    reverse the ellipse%
  },
  reverse the ellipse/.code={
    \let\pgfpathellipse=\revpgfpathellipse
  }
}
\begin{document}
\begin{tikzpicture}
\node[ellipse,
  draw,
  postaction={
    decorate,
    decoration={
      markings,
      mark=at position 1 with {
        \arrow[line width=5pt,blue]{>}
      }
    }
  }
] at (0,0) {hello world};

\node[reversed ellipse,
  draw,
  postaction={
    decorate,
    decoration={
      markings,
      mark=at position 1 with {
        \arrow[line width=5pt,blue]{>}
      }
    }
  }
] at (0,-2) {hello world};
\end{tikzpicture}

\end{document}

Here's the result:

rotated ellipse

(the arrow got clipped, but you can see where it lies)

Best Answer

Related Solutions

[Tex/LaTex] Beamer reflections with pgf/tikz

[Tex/LaTex] Rotate a node but not its content: the case of the ellipse decoration

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