Re: RFC: new features

[Alexander Larsson <alexl redhat com>]

On Mon, 2012-01-16 at 13:08 +0000, Bastien Nocera wrote:
> On Fri, 2012-01-13 at 17:34 -0800, Christian Hergert wrote:
> > Hopefully this isn't getting old, but I'm sort of just throwing these
> > out there as I think of them.
> > 
> <snip>
> > BACKGROUND OPACITY
> > It would be nice to have the ability to alter the opacity of a window
> > without altering the opacity of GdkWindow'd widgets inside it. This is
> > useful for utility windows that float over a primary window. Right now,
> > you have to handle changes with the visual and/or screen and modify the
> > background yourself. This breaks possible theming and is tedious.
> > http://www.pixelmator.com/ is a good example of why this might be
> > useful.
> 
> Had that problem in the Wacom calibration screen. I wanted the elements
> to be opaque but on a translucent dark background. It wasn't possible
> without resorting to hacks (such as having 2 windows, one translucent
> with the black background, one with the opaque elements on a transparent
> background).

Can't you just make the window an RGBA window with a semi-transparent
color on the toplevel, but normal bg colors on the other widgets?