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56 lines
1.5 KiB
56 lines
1.5 KiB
\usepackage{calc}
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\newlength{\boxw}
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\newlength{\boxh}
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\newlength{\boxroundness}
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\newlength{\shadowsize}
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\newlength{\tmpa}
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\setlength{\shadowsize}{6pt}
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\setlength{\boxroundness}{3pt}
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\newsavebox{\shadowblockbox}
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\newenvironment{shadowblock}[1]
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{\begin{lrbox}{\shadowblockbox}\begin{minipage}{#1}}
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{\end{minipage}\end{lrbox}
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\settowidth{\boxw}{\usebox{\shadowblockbox}}
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\settodepth{\tmpa}{\usebox{\shadowblockbox}}
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\settoheight{\boxh}{\usebox{\shadowblockbox}}
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\addtolength{\boxh}{\tmpa}
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\addtolength{\boxw}{\boxroundness * 2}
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\addtolength{\boxh}{\boxroundness * 2}
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\begin{tikzpicture}
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\foreach \x in {0, .05, ..., 1}
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{
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\setlength {\tmpa}{\shadowsize * \real{\x}}
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\fill[xshift=\shadowsize - 1pt, yshift=\shadowsize + 1pt, black, opacity=.04, rounded corners=\boxroundness]
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(\tmpa, \tmpa) rectangle +(\boxw - \tmpa - \tmpa, \boxh - \tmpa - \tmpa);
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\filldraw[fill=gray!40, draw=black!10, rounded corners=\boxroundness]
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(0, 0) rectangle (\boxw, \boxh);
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\draw node [xshift=\boxroundness, yshift=\boxroundness, inner sep=0pt, outer sep=0pt, anchor=south west]
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(0, 0) {\usebox{\shadowblockbox}};
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}
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\end{tikzpicture}
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}
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%
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% We prepare a transparent box first.
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%
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%\newsavebox{\mybox}
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%\begin{lrbox}{\mybox}
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%\begin{shadowblock}{5cm}
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%This is a block of text with a transparent
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%shadow!
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%\end{shadowblock}
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%\end{lrbox}
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%\raisebox{0cm}[0pt][0pt]{\makebox[0pt]{\usebox{\mybox}}}
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%{\usebox{\mybox}}
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%\begin{textblock}{4}(2,5.2)
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%\begin{shadowblock}{4cm}
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%And a small one on top of it.
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%\end{shadowblock}
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%\end{textblock}
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