Making a small modification to a LaTeX environment

latex

I've been using \begin{figure} ... \end{figure} throughout my LaTeX document, but the default styling is ugly; namely, the figures are all left-aligned. Is there a way to redefine the "figure" environment so it automatically inserts some centering commands such as like this?:

\begin{figure} \begin{center}
\end{center} \end{figure}

Sure, I could use \newenvironment to define a "cfigure" environment, but that's undesirable. I don't want to go through and change all my "figures" to "cfigures" (and then later realise I wanted all the figures to be right-aligned and have to rename them all to "rfigures").

I could use \renewenvironment, but then I'd have to dig through the LaTeX source to find what the "figure" environment was originally defined as copy/paste it in.

I almost found what I wanted at this blog post, but the example there was for a command, not an environment.

Best Answer

\let\oldfigure\figure
\def\figure{\oldfigure\centering}

Another solution which works with the optional arguments.

Fixed.

\let\oldfigure\figure
\let\oldendfigure\endfigure
\def\figure{\begingroup \oldfigure}
\def\endfigure{\centering \oldendfigure \endgroup}

Fixed 2. It does work well with any options and any rules and \par inside.

\makeatletter
\let\oldfigure\figure
\def\figure{\@ifnextchar[\figure@i \figure@ii}
\def\figure@i[#1]{\oldfigure[#1]\centering}
\def\figure@ii{\oldfigure\centering}
\makeatother

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LaTeX source code listing like in professional books

It seems to me that what you really want, is to customize the look of the captions. This is most easily done using the caption package. For instructions how to use this package, see the manual (PDF). You would probably need to create your own custom caption format, as described in chapter 4 in the manual.

Edit: Tested with MikTex:

\documentclass{report}

\usepackage{color}
\usepackage{xcolor}
\usepackage{listings}

\usepackage{caption}
\DeclareCaptionFont{white}{\color{white}}
\DeclareCaptionFormat{listing}{\colorbox{gray}{\parbox{\textwidth}{#1#2#3}}}
\captionsetup[lstlisting]{format=listing,labelfont=white,textfont=white}

% This concludes the preamble

\begin{document}

\begin{lstlisting}[label=some-code,caption=Some Code]
public void here() {
    goes().the().code()
}
\end{lstlisting}

\end{document}

Result:

Preview

How to wrap text in LaTeX tables

Use p{width} for your column specifiers instead of l/r/c.

\begin{tabular}{|p{1cm}|p{3cm}|}
  This text will be wrapped & Some more text \\
\end{tabular}

EDIT: (based on the comments)

\begin{table}[ht]
    \centering
    \begin{tabular}{p{0.35\linewidth} | p{0.6\linewidth}}
      Column 1  & Column2 \\ \hline
      This text will be wrapped & Some more text \\
      Some text here & This text maybe wrapped here if its tooooo long \\
    \end{tabular}
    \caption{Caption}
    \label{tab:my_label}
\end{table}

we get:

Best Answer

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