xcb: Process _NET_WORKAREA and screen geometry changes separately

This commit allows to avoid superfluous calls to the X server.
We don't request _NET_WORKAREA values when the screen geometry changes,
and we avoid RandR calls on each _NET_WORKAREA change.
Besides, update the available geometry of all screens with the
same root window, rather than only that one which corresponds
to Qt::Desktop window.

Change-Id: I5ec624717f5f261c986cd9aaf2425f22985e11c0
Reviewed-by: Błażej Szczygieł <spaz16@wp.pl>
Reviewed-by: Uli Schlachter <psychon@znc.in>
Reviewed-by: Shawn Rutledge <shawn.rutledge@theqtcompany.com>

1 files changed, 0 insertions, 2 deletions

diff --git a/src/plugins/platforms/xcb/qxcbwindow.cpp b/src/plugins/platforms/xcb/qxcbwindow.cpp
index b691c7550f..bcc571c3c8 100644
--- a/src/plugins/platforms/xcb/qxcbwindow.cpp
+++ b/src/plugins/platforms/xcb/qxcbwindow.cpp
@@ -2378,8 +2378,6 @@ void QXcbWindow::handlePropertyNotifyEvent(const xcb_property_notify_event_t *ev
         return;
     } else if (event->atom == atom(QXcbAtom::_NET_FRAME_EXTENTS)) {
         m_dirtyFrameMargins = true;
-    } else if (event->atom == atom(QXcbAtom::_NET_WORKAREA) && xcbScreen() && event->window == xcbScreen()->root()) {
-        xcbScreen()->updateGeometry(event->time);
     }
 }