[compiz] [PATCH] Notification on window restacking

[Erkin Bahceci]

This particular notification is not necessary for the animation plugin
anymore (in Animation, I just had to add a few simple lines on
ConfigureNotify to reach the notification point I wanted in
restackWindow()).

Looking forward to your new drawing framework.

Regards,
Erkin

On 3/29/07, David Reveman <davidr at novell.com> wrote:
> On Sat, 2007-03-24 at 12:32 -0500, Erkin Bahceci wrote:
> > Hi,
> >
> > This patch adds notification on window restacking. Plugins may need to
> > do something when that happens. For example, it is used in the new
> > version of animation plugin to perform a fade effect when a window
> > moves above or below other windows (in the plugin's settings this
> > effect is selected as a focus effect, but it's actually a restack
> > effect).
>
> Some kind of notification for this would be useful. I'm not sure how
> much you can do with it in the current infrastructure, though.
>
> It seems to me that to be able to do something useful on stack changes a
> plugin must be able to delay the stack change until later. The most
> appropriate way to do this is to have the plugin prevent the core from
> rendering the core instance of the window at the new stack position
> until some plugin effect is completed. This is easy to do today but it's
> hard to have the window rendered at a different stack position by the
> plugin. This is one of the things that are addressed in the new drawing
> framework that I'm going to propose soon.
>
> Nevertheless, this doesn't stop us from adding this notification
> function but before we do that I'd like us to decide if we want to move
> to using functions that apply changes instead notification functions. I
> just sent a mail about this to the list.
>
> - David
>
>