When using a metacity theme with rounded corners, corners are not transparent

I'll have a look, thanks for your bug report.

No real solution yet, still working on it...

We surely have to use this module to deal with it:
http://search.cpan.org/~smccam/X11-Protocol-0.56/Protocol/Ext/SHAPE.pm

I reopen here. I installes shutter 0.7

§ dpkg -l shutter | grep ii
ii shutter 0.70~ppa11

When i make a screenshot of a window (i'm using shiki as my desktop theme here) i see the gray background from my wallpaper but no transparency.

A Screenshot to explain this better. The marked corner should be transparent.

Are you using compiz?

> Are you using compiz?

I tried metacity and compiz. It doesn't make a difference.

And you are using png as filetype?

Yes.

It does happen sometimes here but I can't find a reproducible way yet

found another case, see top-left on this one:

http://www.ubuntu-pics.de/bild/10613/screenshot_100_508__2o3qVg.png

(stats a different site)

Ah, i think i found the answer. Start metacity before you take a screenshot

$ metacity --replace &
$ shutter

-> Corners are transparent

Switch to metacity AFTER you started shutter

$ compiz --replace &
$ shutter
$ metacity --replace &

-> And you'll get opaque window corners

Oh, this is correct.
Shutter initializes the X11 protocol connection on startup. At this point the XSHAPE extension is loaded as well. Maybe we can catch a signal when wm was changed, so we can init X11 again.

@Christoph: Do you agree that this would be a valid solution or is anything else not working here?

@Mario: Yep, that would be a valid solution. For me it's quite important to be able to take screenshots with transparent corners since i have to include them into documentations or reports. But i also like desktop effects while working. So i switch between metacity and compiz to get the transparent corners, but it would be easier not to need restart shutter too :)