How to fade a drop shadow to transparent in a -45 degree angle?

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How to fade a drop shadow to transparent in a -45 degree angle?

by mhofert :: Rate this Message:

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Hi,

I would like to construct a drop shadow around a box. This shadow  
should be fading out in a -45 degree angle. It should be the same  
gray everywhere near the box and faded out from there to transparent  
the farther away the shadow is located from the body of the box. How  
do I achieve this? In the minimal example, I could not come up with a  
solution to this.

Thanks

Marius

\documentclass{scrartcl}

\usepackage[T1]{fontenc}
\usepackage{lmodern}
\usepackage[USenglish]{babel}
\usepackage{xcolor}
\usepackage{tikz}

\usetikzlibrary{shadows,fadings}
\newcommand*{\mybox}{%width, content
        \begin{tikzpicture}
                \node[rectangle,rounded corners,fill,inner xsep=2mm,inner  
ysep=2mm,text justified,top color=black!50,bottom color=black,drop  
shadow={shadow xshift=1ex,shadow yshift=-1ex,fading angle=-45}]{\color
{white}%
                        My box entry.
                };
        \end{tikzpicture}
}

\begin{document}
        \mybox
\end{document}


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