[Tex/LaTex] Itemize list inside a tikzpicture node

itemizeliststikz-pgf

I'm trying to put a boxed itemize list inside my TikZ figure:

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{arrows.meta}
\begin{document}

\begin{tikzpicture}
\node at (1.7, 10) {\texttt{q1}};
\node at (1.7, 8) {\texttt{q2}};
\draw [-{>[length=3mm,width=3mm]},line width=1pt] (2, 10) -- (5, 10);
\draw [-{>[length=3mm,width=3mm]},line width=1pt] (2, 9) -- (5, 8.8);
\node at (5, 10) {\framebox{\Large
    {\begin{itemize}
        \item \texttt{[0]}
        \item \texttt{[1]}
        \item \texttt{[2]}
    \end{itemize}}
}};
\end{tikzpicture}
\end{document}

But I get 

! LaTeX Error: Something's wrong--perhaps a missing \item.` at the line `}};

and I don't understand why (since I have fed \itemize three \items.) Can anyone help?

Best Answer

You need to use a \parbox, but since you probably want it to be the natural width of the text I used varwidth in the example below:

enter image description here

but I would recommend you use \nodes instead for each of the bulleted items, which makes it easier to connect them. To draw the box around the nodes you can use the fit library:

enter image description here

You can adjust the value of inner sep= to control the spacing between the text and the box.

Code:

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{arrows.meta}
\usepackage{varwidth}
\begin{document}

\begin{tikzpicture}
\node at (1.7, 10) {\texttt{q1}};
\node at (1.7, 8) {\texttt{q2}};
\draw [-{>[length=3mm,width=3mm]},line width=1pt] (2, 10) -- (5, 10);
\draw [-{>[length=3mm,width=3mm]},line width=1pt] (2, 9) -- (5, 8.8);
\node at (5, 10) {\framebox{\Large
    {\begin{varwidth}{\linewidth}\begin{itemize}
        \item \texttt{[0]}
        \item \texttt{[1]}
        \item \texttt{[2]}
    \end{itemize}\end{varwidth}}
}};
\end{tikzpicture}
\end{document}

Code: Suggested Solution

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{arrows.meta}
\usetikzlibrary{fit}

\begin{document}

\begin{tikzpicture}
    \node (Q1) at (1.7, 10) {\texttt{q1}};
    \node (Q2) at (1.7, 8) {\texttt{q2}};

    \node [font=\Large] (top)    at (5,10) {$\bullet$ [0]};
    \node [font=\Large] (middle) at (5,9)  {$\bullet$ [1]};
    \node [font=\Large] (bottom) at (5,8)  {$\bullet$ [2]};
    \node[draw=brown, thick,fit={(top) (middle) (bottom)}, inner sep=10pt]   (box) {};

    \draw [-{>[length=3mm,width=3mm]}, red, line width=1pt] (Q1) -- (top);
    \draw [-{>[length=3mm,width=3mm]}, blue,line width=1pt] (Q2) -- (middle);

\end{tikzpicture}
\end{document}
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