Bytefields: horizontally align leftwordgroup

Question

My leftwordgroups look pretty ugly in my bytefields. Is it possible to make the same gap between bytefield and leftwordgroup as between bytefield and rightwordgroup? Or is it at least possible, to make the gap between leftwordgroup and bytefield a little bit bigger?

This is my current code:

\documentclass[a4paper,ngerman,naustrian,DIV=12,BCOR=1cm]{scrbook}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{bytefield}
\usepackage{needspace}

\newcommand{\flexnumfield}{{FlexNum, 1 -- 9 Bytes}}

\begin{document}
\chapter{Bytefield}
\needspace{2\baselineskip}\begin{figure}\centering\begin{bytefield}[bitwidth=2.2em]{8} \\ 
\bitheader{0-7} \\ 
\begin{rightwordgroup}{\parbox{8em}{\raggedright Message Type}}
\wordbox[lrt]{1}{9}

\end{rightwordgroup}
\\ 
\begin{leftwordgroup}{\parbox{8em}{\raggedleft Versionsverlauf}}
\wordbox[lrt]{3}{Version Count \\ \flexnumfield \\ $\vdots$}
\\ 
\begin{rightwordgroup}{\parbox{8em}{\raggedright Version}}
\wordbox[lrtb]{3}{Hash \\ Data, 20 Bytes \\ $\vdots$}

\end{rightwordgroup}
 \\ 
\begin{rightwordgroup}{\parbox{8em}{\raggedright Version}}
\wordbox[lrtb]{1}{$\vdots$}

\end{rightwordgroup}

\end{leftwordgroup}
\end{bytefield}\par\protect\caption{some caption} 
\label{bytefield}
\end{figure}
\end{document}

ugly leftwordgroup

Please provide a complete Minimum Working Example, beginning with \documentclass. Welcome to the site. — Steven B. Segletes, Apr 21 '15 at 16:07
Thank you for adding full code... but it still does not compile. Things like \code and \flexnumfield are undefined...but are they necessary to define the "problem"? — Steven B. Segletes, Apr 21 '15 at 16:22

Steven B. Segletes · Answer 1 · 2015-04-21T17:15:15.827

Here I applied a patch to the environment, adding 12pt to the left using these lines of code:

\usepackage{xpatch}
\makeatletter
\xpatchcmd{\endleftwordgroup}{-\total@lbox@width}{-12pt -\total@lbox@width}{}{}
\makeatother

Here is the MWE.

\documentclass[a4paper,ngerman,naustrian,DIV=12,BCOR=1cm]{scrbook}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{bytefield}
\usepackage{needspace}
\usepackage{xpatch}
\makeatletter
\xpatchcmd{\endleftwordgroup}{-\total@lbox@width}{-12pt -\total@lbox@width}{}{}
\makeatother
\newcommand{\flexnumfield}{{FlexNum, 1 -- 9 Bytes}}

\begin{document}
\chapter{Bytefield}
\needspace{2\baselineskip}\begin{figure}\centering\begin{bytefield}[bitwidth=2.2em]{8} \\ 
\bitheader{0-7} \\ 
\begin{rightwordgroup}{\parbox{8em}{\raggedright Message Type}}
\wordbox[lrt]{1}{9}

\end{rightwordgroup}
\\ 
\begin{leftwordgroup}{\parbox{8em}{\raggedleft Versionsverlauf}}
\wordbox[lrt]{3}{Version Count \\ \flexnumfield \\ $\vdots$}
\\ 
\begin{rightwordgroup}{\parbox{8em}{\raggedright Version}}
\wordbox[lrtb]{3}{Hash \\ Data, 20 Bytes \\ $\vdots$}

\end{rightwordgroup}
 \\ 
\begin{rightwordgroup}{\parbox{8em}{\raggedright Version}}
\wordbox[lrtb]{1}{$\vdots$}

\end{rightwordgroup}

\end{leftwordgroup}
\end{bytefield}\par\protect\caption{some caption} 
\label{bytefield}
\end{figure}
\end{document}

enter image description here

score 2 · Accepted Answer · answered Apr 21 '15 at 16:53

There is a strange asymmetry between left and right:

\documentclass[a4paper,DIV=12,BCOR=1cm]{scrbook}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{bytefield}

\newcommand{\flexnumfield}{{FlexNum, 1 -- 9 Bytes}}

\begin{document}

\begin{bytefield}[
  bitwidth=2.2em,
  rightcurlyspace=0pt,
  leftcurlyspace=12pt
]{8} \\ 
\bitheader{0-7} \\ 
\begin{rightwordgroup}{Message Type}
\wordbox[lrt]{1}{9}
\end{rightwordgroup}
\\ 
\begin{leftwordgroup}{Versionsverlauf}
\wordbox[lrt]{3}{Version Count \\ \flexnumfield \\ $\vdots$}
\\ 
\begin{rightwordgroup}{Version}
\wordbox[lrtb]{3}{Hash \\ Data, 20 Bytes \\ $\vdots$}
\end{rightwordgroup}
\\ 
\begin{rightwordgroup}{Version}
\wordbox[lrtb]{1}{$\vdots$}
\end{rightwordgroup}
\end{leftwordgroup}
\end{bytefield}


\end{document}

enter image description here

Instead of specifying the values in the optional argument to the environment, you can define the spaces globally (or locally inside an environment like figure or table) by saying

\bytefieldsetup{
  rightcurlyspace=0pt,
  leftcurlyspace=12pt
}

in the preamble (or in the environment).

Bytefields: horizontally align leftwordgroup

2 Answers2