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On Thursday 30 January 2014 11:21:59 Helio Chissini de Castro wrote:
> On Thursday 30 January 2014 13:32:29 Martin Gr=C3=A4=C3=9Flin wrote:
> > On Thursday 30 January 2014 10:23:57 Helio Chissini de Castro wrote=
:
> > > Hello all
> > >=20
> > > Our base system that is deployed in our touch table machines are =
KDE 4
> > > with
> > > Fedora system. We use basically only Qt Qml application, full scr=
een
> > > spanned on the dual screen setup, standard monitor and projection=
 touch
> > > screen. Recently we got required to run some applications built o=
n
> > > Unity3D and i stumbled on a specific issue only on kwin.
> > >=20
> > > The Unity runtime player has few options to handle window,
> > > one of then is -popupwindow
> > >=20
> > > Situation is, despite been working fine on regular windowed mode,=
 if we
> > > use
> > > the popupwindow mode it creates a frameless window centered on sc=
reen
> > > which
> > > simply hides itself when clicked with mouse or similar click iter=
action
> > > (
> > > touch table ), but application still runs on background.
> > >=20
> > > The same result not happens on bare X window or any other
> > > compositor/window
> > > manager.
> >=20
> > What is the expected effect? That the window stays there or that th=
e
> > application exits?
>=20
> Stay there, because we need to iteract over the objects

I'm getting good at guessing the window flags correctly from the descri=
bed=20
behavior :-)

It's a splash window, see:
_NET_WM_WINDOW_TYPE(ATOM) =3D _NET_WM_WINDOW_TYPE_SPLASH

KWin's behavior is to close splash windows when you click them:
if (isSplash()
       && button =3D=3D XCB_BUTTON_INDEX_1 && !bModKeyHeld) {
    // hide splashwindow if the user clicks on it
    hideClient(true);
    if (w =3D=3D wrapperId())
      xcb_allow_events(connection(), XCB_ALLOW_SYNC_POINTER,=20
XCB_TIME_CURRENT_TIME);  //xTime());
     return true;
}

This is from events.cpp (line 1053 current master).

I'd suggest to not use a splash window for this case. I assume that uni=
ty uses=20
splash windows for frameless windows as that was the only way to get it=
=20
without decorations on all window managers. It's obviously wrong and th=
ere are=20
kind of standardized ways (e.g. Yakuake works, doesn't it ;-)

Cheers
Martin
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