horizontal alignmentsectioningtitlesec
I am trying to have a simple bilingual title for a section. The English text should align to the left and the Arabic text should align to the right, both on the same line.
The following line of code almost does the job, but the Arabic text is not fully right aligned——it looks like there is an extra margin, compared to the rest of the document.
\section{English Title \hfill\textarabic{كلمة}}
I tried titlesec's block shape, but that didn't do the trick.
How can I fix it?
This is relatively easy to achieve using the titlesec package:
\documentclass{scrbook}
\usepackage{tikz,titlesec}
\usepackage[english]{babel}
\usepackage{blindtext} % for a test document
\titleformat{\section}[block]%
{\usekomafont{sectioning}\usekomafont{section}%
\tikz[overlay] \shade[left color=blue!20,right color=white] (0,-1ex) rectangle (\textwidth,1em);}%
{\thesection}%
{1em}%
{}
\begin{document}
\blinddocument
\end{document}
Note the following:
\usekomafont{sectioning}\usekomafont{section} sets the font to whatever is chosen using the KOMA Script styling mechanism.
The [overlay] option of \tikz means that TikZ won't take any space.
This breaks if the title is longer than a line.
Edit: Here is second version, that works with long lines and does not ignore ascenders and descenders. The code is more complicated, though. It draws the whole section heading with TikZ.
\documentclass{scrbook}
\usepackage{tikz,titlesec}
\usetikzlibrary{calc}
\pgfdeclarelayer{background}
\pgfsetlayers{background,main}
\newcommand\boxedsection[1]{{%
\usekomafont{sectioning}\usekomafont{section}%
\begin{tikzpicture}[inner sep=0pt, inner ysep=0.3ex]
\node[anchor=base west] at (0,0) (counter) {\thesection};
\path let \p1 = (counter.base east) in node[anchor=base west, text width={\textwidth-\x1-0.33em}] (content) at ($(counter.base east)+(0.33em,0)$) {#1};
\begin{pgfonlayer}{background}
\shade[left color=blue!20,right color=white] let \p1=(counter.north), \p2=(content.north) in
(0,{max(\y1,\y2)}) rectangle (content.south east);
\end{pgfonlayer}
\end{tikzpicture}%
}}
\titleformat{\section}%
{}%
{}%
{0pt}%
{\boxedsection}%
\begin{document}
\chapter{test}
\section{Overview}
\section{Implementation}
\section{a very long section entry a very long section entry a very long section entry a very long section entry a very long section entry}
\end{document}
If the longest constraint needs to be flushed to the right margin, you could use a tabular* environment with two centered columns; something along these lines (change the lengths according to your needs):
\documentclass[reqno]{amsart}
\usepackage{array}
\newlength\MyIndent
\setlength\MyIndent{10em}
\begin{document}
\vspace{\abovedisplayskip}
\noindent\begin{tabular*}{\textwidth}{@{\hspace{\MyIndent}}>{$}c<{$}@{\extracolsep{\fill}}
>{$}c<{$}@{}}
a^2 + b^2 = ab & (a \in \{z,y,x,w,v,u\},\ b \neq 0) \\
a + b = c & (a \in \{z,y\},\ b = 0) \\
\end{tabular*}\par
\vspace{\belowdisplayskip}
\end{document}
If the longest constraint doesn't need to be flushed to the right margin, a simple array environment will do the job (change the lengths according to your needs):
\documentclass[reqno]{amsart}
\begin{document}
\[
\begin{array}{@{\hspace{7em}}c@{\hspace{3em}}c}
a^2 + b^2 = ab & (a \in \{z,y,x,w,v,u\},\ b \neq 0) \\
a + b = c & (a \in \{z,y\},\ b = 0) \\
\end{array}
\]
\end{document}
Best Answer
You can use a
minipageinside your section title to perform whatever alignment you need. Of coursetitlesecis essential in this situation. Theblockshape can be defined as this:where we left
.05\linewidthfor section numbering and the remaining.95\textwidthfor the bilingual title.