Re: How to stack widgets or GtkFixed doesn't seem to work well for stacking

["Sean Kelley" <sean sweng gmail com>]

All,

On 5/14/06, Matt Hoosier <mwhoosier gmail com> wrote:
> I'm a co-worker of the original poster on this thread. Part of the
> trouble with using a new dialog is that it allocates a new X11 window,
> which is not guaranteed to be alpha blended with the parent window.
> Platforms with a compositing X server support this, but that's a
> little more difficult to get with a minimalistic X server on embedded
> devices.

Would a combination of Gtk+ 2.9 and DirectFB offer a better path for
this sort of compositing over Gtk+ 2.6 and kdrive, assuming the
processor performance is decent with Cairo?

Sean

> On 5/12/06, Murray Cumming <murrayc murrayc com> wrote:
> > On Thu, 2006-05-11 at 06:58 -0500, Sean Kelley wrote:
> > > It appers that GtkFixed is not really designed for stacking widgets as
> > > it does not have
> > > a concept of a z-axis. What gets drawn on top is purely a matter of what
> > > child comes last when drawing, and a similar story is with input.
> > >
> > > If you need to stack things, how is this best accomplished?
> > >
> > > Imagine you are working with an embedded device with a series of
> > > widgets that act as page so to speak. Here's the sequence of events:
> > >
> > > Add a widget (call it menu page) to the fixed widget
> > > Add a confirmation page to the fixed widget
> > > Remove the menu page from the fixed widget
> > > Add the settings page to the fixed widget
> > > Remove the confirmation page from the fixed widget
> > > Add the confirmation page to the fixed widget
> > >
> > > (note that the last two operations were done in an attempt to get
> > > confirmation page in the foreground)
> > >
> > > After this sequence of events I would expect to see the settings page in the
> > > background with the confirmation page in the foreground.
> >
> > This does seem to be an attempt to simulate stacked GtkWindows. Is there
> > a reason that you can't just show a dialog?
> >
> > --
> > Murray Cumming
> > murrayc murrayc com
> > www.murrayc.com
> > www.openismus.com
> >
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