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, 16 deletions

diff --git a/src/plugins/platforms/xcb/qxcbconnection.cpp b/src/plugins/platforms/xcb/qxcbconnection.cpp
index 52f93b9483..01e67039f1 100644
--- a/src/plugins/platforms/xcb/qxcbconnection.cpp
+++ b/src/plugins/platforms/xcb/qxcbconnection.cpp
@@ -2287,22 +2287,6 @@ QXcbSystemTrayTracker *QXcbConnection::systemTrayTracker() const
     return m_systemTrayTracker;
 }
 
-bool QXcbConnection::xEmbedSystemTrayAvailable()
-{
-    if (!QGuiApplicationPrivate::platformIntegration())
-        return false;
-    QXcbConnection *connection = static_cast<QXcbIntegration *>(QGuiApplicationPrivate::platformIntegration())->defaultConnection();
-    return connection->systemTrayTracker();
-}
-
-bool QXcbConnection::xEmbedSystemTrayVisualHasAlphaChannel()
-{
-    if (!QGuiApplicationPrivate::platformIntegration())
-        return false;
-    QXcbConnection *connection = static_cast<QXcbIntegration *>(QGuiApplicationPrivate::platformIntegration())->defaultConnection();
-    return connection->systemTrayTracker() && connection->systemTrayTracker()->visualHasAlphaChannel();
-}
-
 Qt::MouseButtons QXcbConnection::queryMouseButtons() const
 {
     int stateMask = 0;