[Tex/LaTex] Coloured shadowbox around equations

boxesequationsshadows

I currently put some boxes around equations using:

\newcommand*\eqbox[1]{
\definecolor{shadowcolor}{RGB}{0, 0, 102}\setlength\shadowsize{2pt}\shadowbox*{#1}
}
\eqbox{$1+1=2$}

How to have the same visual result but with equations between \begin{equation}\end{equation} ?

\documentclass[11pt,a4paper]{book}
\usepackage[utf8]{inputenc}
\usepackage{fancyhdr}
\usepackage{fancybox}
\usepackage{makeidx}
\usepackage{graphicx}
\usepackage{xcolor}
\usepackage{empheq}

\newcommand*\eqbox[1]{\definecolor{shadowcolor}{RGB}{0, 0, 102}\setlength\shadowsize{2pt}\shadowbox*{#1}}
\begin{document}
\eqbox{$1+1 = 2$} % OK
\eqbox{\begin{equation}1+1 = 2\end{equation}} % NOT OK
\begin{equation}\eqbox{1+1 = 2}\end{equation} %OK
\begin{equation}\eqbox{r_{s} = \frac{2GM}{c^{2}}}\end{equation} % NOT OK
\end{document}

Note: I do not want the equation number to be in the box…

Best Answer

The package empheq does this quite easily:

\documentclass[11pt,a4paper]{book}
\usepackage{fancybox,xcolor}
\usepackage{empheq}

\definecolor{shadowcolor}{RGB}{0, 0, 102}
\newcommand*\eqbox[1]{%
  \setlength\shadowsize{2pt}%
  \shadowbox*{#1}%
}


\begin{document}
Some text
\begin{empheq}[box=\eqbox]{equation}
1+1 = 2
\end{empheq}
Some text
\begin{empheq}[box=\eqbox]{align}
r_{s} &= \dfrac{2GM}{c^{2}} \\
v &= ab+cd
\end{empheq}

\end{document}

enter image description here

Is this something I like? No.

Related Solutions

[Tex/LaTex] get a shadowbox with rounded corners? (using `listings` package)

Next code uses tcolorbox to format the shadowed box where code is inserted through listing package. Size, color and format of shadows can be adapted to ones taste.

\documentclass{article}

\usepackage[most]{tcolorbox}

\newtcblisting{pythoncode}[2][]{%
    enhanced, title=#2, colframe=blue!50!black, 
    colback=blue!10!white, 
    fonttitle=\ttfamily, coltitle=white,
    attach boxed title to top left = {xshift=5mm,yshift=-2mm} ,
    boxed title style={size=small, colback=blue!75!black},
    width=.5\linewidth,
    listing only,listing options={language=Python, basicstyle=\ttfamily\footnotesize},#1}

\begin{document}

\begin{pythoncode}[drop shadow]{hello.py}
#!/usr/bin/env python
def main():
    print "Hello, World!"
if __name__ == '__main__':
    main()
\end{pythoncode}

\begin{pythoncode}[drop fuzzy shadow]{hello.py}
#!/usr/bin/env python
def main():
    print "Hello, World!"
if __name__ == '__main__':
    main()
\end{pythoncode}

\begin{pythoncode}[drop lifted shadow]{hello.py}
#!/usr/bin/env python
def main():
    print "Hello, World!"
if __name__ == '__main__':
    main()
\end{pythoncode}
\end{document}

enter image description here

[Tex/LaTex] Shadowbox that breaks page

The mdframed package does what you need (after loading the shadows library for TikZ):

\documentclass{article}
\usepackage[framemethod=tikz]{mdframed}
\usetikzlibrary{shadows}

\newmdenv[shadow=true,shadowcolor=black,font=\sffamily,rightmargin=8pt]{shadedbox}

\begin{document}


\begin{shadedbox}
Data warehousing seems to be a big trend these days, and is very interesting to me. 
I'm trying to acquaint myself with its concepts, and am having a problem "seeing 
the forest through the trees" because all of the data warehouse models descriptions 
I can find online are theoretical, but don't gives examples with actual technologies 
being used. I'm a contextual learner, so abstracted, theoretical explanations don't 
really help me out all that much.
\end{shadedbox}

\end{document}

enter image description here

Update

Another option, using this time tcolorbox:

\documentclass{article}
\usepackage[many]{tcolorbox}
\usetikzlibrary{shadows}

\newtcolorbox{shadedbox}{
  drop shadow southeast,
  breakable,
  enhanced jigsaw,
  colback=white,
}

\begin{document}

\begin{shadedbox}
Data warehousing seems to be a big trend these days, and is very interesting to me. 
I'm trying to acquaint myself with its concepts, and am having a problem "seeing 
the forest through the trees" because all of the data warehouse models descriptions 
I can find online are theoretical, but don't gives examples with actual technologies 
being used. I'm a contextual learner, so abstracted, theoretical explanations don't 
really help me out all that much.
\end{shadedbox}

\end{document}

Best Answer

Related Solutions

[Tex/LaTex] get a shadowbox with rounded corners? (using `listings` package)

[Tex/LaTex] Shadowbox that breaks page

Update

Related Question