box TikZ of the same width as textwidth

Question

\documentclass{minimal}  
\usepackage{tikz}
\usepackage{lipsum}

\begin{document}

\noindent 
\begin{tikzpicture}[trim left = (box.west)] 
\node[draw = red] (box) {%
    \begin{minipage}{\textwidth} 
      \lipsum[1]
    \end{minipage}
    };
\node[left = 1cm] at (box.west) {hello};
\end{tikzpicture} 

\lipsum[2]
\end{document}

Is there a way to force the box to have the same width as the text above ?

Without using if possible

    \begin{minipage}{0.94\textwidth}

Thanks

Your question is not quite clear to me, but since you asked for a minipage with a width of textwidth, your box is obviously larger than the text block below. Could you elaborate about what your problem is exactly? — SebGlav, Aug 19 '22 at 14:38
A node includes the inner xsep and the inner ysep value. The red border adds by default an outer xsep and outer ysep to the size of the node (by default half the line width) so that the anchors of the node lie at the actual outside. So your actual TikZpicture is \textwidth + 2*/pgf/inner xsep + 2*/pgf/outer xsep wide. (But remember the bounding box issue of your previous question which would have ignored any outer seps anyway.) So: \begin{minipage}{\dimexpr\textwidth-.6666ex-.4pt\relax} would be a start. (Default inner sep is .3333ex and default linewidth is .4pt.) — Qrrbrbirlbel, Aug 19 '22 at 14:49

Zarko · Accepted Answer · 2022-08-19T15:11:16.973

2

Try the following:

\documentclass{article}
\usepackage{microtype}
\usepackage{tikz}
\usepackage{lipsum}
\begin{document}
\noindent
\begin{tikzpicture}[trim left = (box.west)] 
\node[draw = red, align=justify,
      text width =\textwidth-2*\pgfkeysvalueof{/pgf/inner xsep}] (box) {\lipsum[1]};
\node[left = 1cm] at (box.west) {hello};
\end{tikzpicture}
\lipsum[2]
\end{document}

As you can see, minipage is removed, but defined is node's text width.

Is this what you after?

edited Aug 19 '22 at 15:11

answered Aug 19 '22 at 14:57

Zarko

296,517

What is trim left = (box.west)? How does it work? – Sigur Aug 19 '22 at 15:14
1

@Sigur, i just copied from OP question :-), however it is described in 15.8 Establishing a Bounding Box (pp184) on page 185 of Ti*kKZ & PGF manual (version 3.1.9a). – Zarko Aug 19 '22 at 17:41
2

@Sigur See that post where everything started about trim. – SebGlav Aug 19 '22 at 17:42

score 1 · Answer 2 · answered Aug 22 '22 at 09:47

You can use a tcolorbox. It's default width is \linewidth.

\documentclass{article}
\usepackage{microtype}
\usepackage{tikz}
\usepackage{lipsum}
\begin{document}
\noindent
\begin{tikzpicture}[trim left = (box.west)] 
\node[draw = red, align=justify,
      text width =\textwidth-2*\pgfkeysvalueof{/pgf/inner xsep}] (box) {\lipsum[1]};
\node[left = 1cm] at (box.west) {hello};
\end{tikzpicture}
\lipsum[2]
\end{document}

box TikZ of the same width as textwidth

2 Answers2