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The classical case

With the classical \newtheorem command of amsthm, one gets the following result for optional arguments: enter image description here from this code

\documentclass{article} \usepackage{amsthm} \newtheorem{theorem}{Theorem} \begin{document} \begin{theorem}[Riemann] Let $X$... Nulla egestas congue ullamcorper. Suspendisse id dictum est. Quisque ut urna lorem. Sed non aliquet sem, quis sollicitudin ante. \end{theorem} \end{document}

The mdframed case

I would like to get a similar result with mdframed:the optional argument between brackets, but no change of font and no dot at the end. But by default, here is what I get:

enter image description here

from the code

\documentclass{article} \usepackage{mdframed} \mdfdefinestyle{myFramedTheoremStyle}{% frametitlealignment=\raggedright, linecolor=red, linewidth=4pt, innertopmargin=0pt, innerbottommargin=10pt, innerleftmargin=10pt, innerrightmargin=10pt, frametitleaboveskip=5pt, skipbelow=0pt, font=\itshape } \mdtheorem[style=myFramedTheoremStyle]{theorem}{Theorem} \begin{document} \begin{theorem}[Riemann] Let $X$... Nulla egestas congue ullamcorper. Suspendisse id dictum est. Quisque ut urna lorem. Sed non aliquet sem, quis sollicitudin ante. \end{theorem} \end{document}

What I have found so far

In the documentation, I have found the following options (of the \mdfdefinestyle command):

theoremseparator, theoremtitlefont and theoremspace

but there seems to be to attribute for defining what comes after the optional argument. I am looking for an option of the \mdfdefinestyle command which could be called theoremtextafter.

My question

I hope something like that exists. Do you know if it is the case? If not, is it possible to find an easy solution?

Thank you.

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2 Answers 2

Reset to default
3

I don't know the official way of doing it, but here is a hack that does the job which:

  • applies theoremtitlefont=\normalfont to get the correct font in the title
  • renames the mdframed theorem to be MDtheorem, and
  • creates a \newenvironment called theorem which inserts the desired ( and ) to the theorem name before passing it on to the MDtheorem.
  • creates a \newenvironment called theorem* to provide the same functionality without the numbering.

enter image description here

Notes:

  • For the starred variant theorem* the mdframe style theoremtitlefont=\normalfont, did not seem sufficient so had to add a manual \normalfont.

Code:

\documentclass{article} \usepackage{mdframed} \mdfdefinestyle{myFramedTheoremStyle}{% frametitlealignment=\raggedright, linecolor=red, linewidth=4pt, innertopmargin=0pt, innerbottommargin=10pt, innerleftmargin=10pt, innerrightmargin=10pt, frametitleaboveskip=5pt, skipbelow=0pt, theoremtitlefont=\normalfont, font=\itshape } \mdtheorem[style=myFramedTheoremStyle]{MDtheorem}{Theorem} \newcommand*{\Title}{} \newenvironment{theorem}[1][]{% \ifstrempty{#1}{\begin{MDtheorem}}{\begin{MDtheorem}[(#1)]}% }{% \end{MDtheorem}% }% \newenvironment{theorem*}[1][]{% % Required `\normalfont` in `MDtheorem*`, but not in the `MDtheorem` environment \ifstrempty{#1}{\begin{MDtheorem*}}{\begin{MDtheorem*}[\normalfont(#1)]}% }{% \end{MDtheorem*}% }% \begin{document} \begin{theorem}[Riemann] Let $X$... Nulla egestas congue ullamcorper. Suspendisse id dictum est. Quisque ut urna lorem. Sed non aliquet sem, quis sollicitudin ante. \end{theorem} \begin{theorem} Let $X$... Nulla egestas congue ullamcorper. Suspendisse id dictum est. Quisque ut urna lorem. Sed non aliquet sem, quis sollicitudin ante. \end{theorem} \begin{theorem*}[Riemann] Let $X$... Nulla egestas congue ullamcorper. Suspendisse id dictum est. Quisque ut urna lorem. Sed non aliquet sem, quis sollicitudin ante. \end{theorem*} \begin{theorem*} Let $X$... Nulla egestas congue ullamcorper. Suspendisse id dictum est. Quisque ut urna lorem. Sed non aliquet sem, quis sollicitudin ante. \end{theorem*} \end{document}
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4
  • Be careful, with this hack, you'll also have to "re-define" \begin{theorem*}. Commented May 21, 2014 at 12:05
  • Your hack does not work, unfortunately... If you type \begin{theorem} Let $X$... Nulla egestas congue ullamcorper. Suspendisse id dictum est. Quisque ut urna lorem. Sed non aliquet sem, quis sollicitudin ante. \end{theorem} you will still have the : after Theorem Commented May 22, 2014 at 17:43
  • @Colas: Fixed to handle using it without the optional environment (as per your answer). Also defined theorem* variant. Commented May 23, 2014 at 21:41
  • I found a bug in mdframed, related to this issue of optional arguments. You might be interested, tex.stackexchange.com/q/179790/8323 Commented May 23, 2014 at 22:43
0

Based on Peter's answer, 

\documentclass{article} \usepackage{mdframed} \mdfdefinestyle{myFramedTheoremStyle}{% frametitlealignment=\raggedright, linecolor=red, linewidth=4pt, innertopmargin=0pt, innerbottommargin=10pt, innerleftmargin=10pt, innerrightmargin=10pt, frametitleaboveskip=5pt, skipbelow=0pt, theoremtitlefont=\normalfont, font=\itshape } \mdtheorem[style=myFramedTheoremStyle]{MDtheorem}{Theorem} \newcommand*{\Title}{} \newenvironment{theorem}[1][]{% \ifstrempty{#1}{\begin{MDtheorem}}% {\begin{MDtheorem}[(#1)]} }{% \end{MDtheorem}% }% \begin{document} \begin{theorem}[Riemann] Let $X$... Nulla egestas congue ullamcorper. Suspendisse id dictum est. Quisque ut urna lorem. Sed non aliquet sem, quis sollicitudin ante. \end{theorem} \begin{theorem} Let $X$... Nulla egestas congue ullamcorper. Suspendisse id dictum est. Quisque ut urna lorem. Sed non aliquet sem, quis sollicitudin ante. \end{theorem} \end{document}

enter image description here

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