[texhax] Known height text area or complex border

[Konstantin Karapetyan]

Hi everybody!

I need to draw a complex border around the document caption on the
title page. I make this border with

{
\centering
\psset{unit=1cm}
\begin{pspicture}(-7.5,5)(7.5,-12)
    \showgrid
    \psframe[linewidth=1mm](-7.5,0)(7.5,-5)
    \psframe[linewidth=0.2mm](-7.54,0.04)(7.54,-5.04)
    \psframe[linewidth=0.2mm](-7.38,-0.12)(7.38,-4.88)
    CAPTION GOES HERE
\end{pspicture}

}

However putting the caption with \rput{\parbox} makes it not always
centered, depending on how long the caption is. So finetuning is
constantly required. Since I am trying to compose a document template,
this is very inconvenient.

The solution which would satisfy me would be to make a minipage, which
would fit into my fixed-size border, and within this minipage the text
would always be centered with, say, \vfill. However the \minipage
command doesn't permit specification of height, only width. Any
alternative?

A very different approach: is it possible to specify a complex border
for \framebox? In this case I would have a non-fixed size border but
fixed white spacings around the text in the border.

Thanks in advance,
Konstantin.