concurrent use of geometry package with watermarks

Question

I'd like to include a graphic as watermark in a document with the twoside option and asymmetric page margins adjusted with the geometry package. There's a plethora of packages that are suitable for the task, but with a few restrictions:

The xwatermark package is simple to use, but I can't specify options for even and odd pages at the same time, so either the watermark appears only on half of the pages or it's page-centered rather than text-centered.
With packages such as watermark, I can't exclude the watermark on specific pages, e.g. the title page and certain pages with diagrams.
Lastly, packages like atbegshi provide access to dvi internals, but I don't have the time to work it all out myself.

So my question is: what is the most elegant way to implement such a flexible watermark? If it is relevant, I'm currently using LaTeX with PSTricks on Windows 7, but may well switch to ConTeXt with PGF/TikZ on Linux in the future...

Thanks in advance.

Answer 1

You could also go with tikz. Page 170 in the PGF & TIKZ manual shows an example.

\begin{tikzpicture}[remember picture,overlay]
\node [rotate=60,scale=10,text opacity=0.2]
at (current page.center) {Example};
\end{tikzpicture}