QSystemTrayIcon/X11: Move platform-specific calls to the xcb plugin

- Detect the tray icon window in the platform plugin by the object
  name. This way we don't need
  QXcbWindowFunctions::requestSystemTrayWindowDockIdentifier().

- Get rid of unused calls
  QXcbIntegrationFunctions::xEmbedSystemTrayVisualHasAlphaChannel()
  and QXcbWindowFunctions::setParentRelativeBackPixmap().

- Mark the tray icon window as embedded to be able to get the correct
  result from QWindow::mapToGlobal(). It allows to drop
  QXcbWindowFunctions::systemTrayWindowGlobalGeometry().

This change allows to remove the intermediate level between
the QSystemTrayIconSys widget and the xcb plugin. The code looks
clearer.

Change-Id: I7d067131287a6dec162b36f0bddc8cb518aaa38c
Reviewed-by: Gatis Paeglis <gatis.paeglis@qt.io>

1 files changed, 0 insertions, 2 deletions

diff --git a/src/plugins/platforms/xcb/qxcbsystemtraytracker.h b/src/plugins/platforms/xcb/qxcbsystemtraytracker.h
index c692cf590d..d2fc24c957 100644
--- a/src/plugins/platforms/xcb/qxcbsystemtraytracker.h
+++ b/src/plugins/platforms/xcb/qxcbsystemtraytracker.h
@@ -57,14 +57,12 @@ public:
 
     xcb_window_t trayWindow();
     void requestSystemTrayWindowDock(xcb_window_t window) const;
-    QRect systemTrayWindowGlobalGeometry(xcb_window_t window) const;
 
     void notifyManagerClientMessageEvent(const xcb_client_message_event_t *);
 
     void handleDestroyNotifyEvent(const xcb_destroy_notify_event_t *) override;
 
     xcb_visualid_t visualId();
-    bool visualHasAlphaChannel();
 signals:
     void systemTrayWindowChanged(QScreen *screen);