Re: Key Release Events

[Vjekoslav Brajkovic <vjeko brajkovic org>]

Thanks Jasper!

Let me try to narrow down my question. Gnome appears to be doing the 
thing I want, I just cannot figure out how it's doing it.

1) I press and hold the <Super> key.
2) The current active window does retains focus. If I type anything 
while I'm holding the key, that window will receive keyboard input.
3) Once I release the <Super> key, overview actor will become active.

I would like to get the same functionality. I would like to get notified 
when that key gets released the same way overview does. In order to get 
this working do I have to change main.js?

On 04/23/2015 07:32 PM, Jasper St. Pierre wrote:
> X11 has no such mechanism to give that to you. Key presses and
> releases are sent directly to the application that has focus, not to
> the window manager.
>
> Main.wm.addKeybinding allows you to register a "grab", which is a way
> of punching through this model, but unfortunately, grab semantics are
> hard to make work for the release case. So we don't properly trigger
> keybindings for key release.
>
> On Thu, Apr 23, 2015 at 4:40 PM, Vjekoslav Brajkovic
> <vjeko brajkovic org> wrote:
> > Hi!
> >
> > I am writing an extension and would like to get notified when a
> > key-*release*-event has occurred regardless of which actor has key focus and
> > without changing it.
> >
> >  From what I understand, the indented way of doing this would be by
> > registering a callback with Main.wm.addKeybinding() and specifying a desired
> > KeyHandlerFunc. The problem is that key release/press information seems to
> > be missing when the handler gets invoked -- the  ClutterKeyEvent parameter
> > is missing and instead of it I get Meta.KeyBinding.
> >
> > I have also tried doing global.stage.connect('key-release-event', ...), but
> > the stage does not receive any signals unless I change the key focus to an
> > actor like overview, which I assume propagates its signals.
> >
> > Does anyone have any ideas or suggestions?
> >
> > Thanks!
> > Vjeko
> >
> >
> > _______________________________________________
> > gnome-shell-list mailing list
> > gnome-shell-list gnome org
> > https://mail.gnome.org/mailman/listinfo/gnome-shell-list