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-rw-r--r--src/plugins/platforms/xcb/qxcbconnection.cpp54
1 files changed, 54 insertions, 0 deletions
diff --git a/src/plugins/platforms/xcb/qxcbconnection.cpp b/src/plugins/platforms/xcb/qxcbconnection.cpp
index f324942c8b..1fe46ff290 100644
--- a/src/plugins/platforms/xcb/qxcbconnection.cpp
+++ b/src/plugins/platforms/xcb/qxcbconnection.cpp
@@ -454,6 +454,7 @@ QXcbConnection::QXcbConnection(QXcbNativeInterface *nativeInterface, bool canGra
, has_xkb(false)
, m_buttons(0)
, m_focusWindow(0)
+ , m_clientLeader(0)
, m_systemTrayTracker(0)
, m_glIntegration(Q_NULLPTR)
, m_xiGrab(false)
@@ -1336,6 +1337,58 @@ xcb_window_t QXcbConnection::rootWindow()
return s ? s->root() : 0;
}
+xcb_window_t QXcbConnection::clientLeader()
+{
+ if (m_clientLeader == 0) {
+ m_clientLeader = xcb_generate_id(xcb_connection());
+ QXcbScreen *screen = primaryScreen();
+ Q_XCB_CALL(xcb_create_window(xcb_connection(),
+ XCB_COPY_FROM_PARENT,
+ m_clientLeader,
+ screen->root(),
+ 0, 0, 1, 1,
+ 0,
+ XCB_WINDOW_CLASS_INPUT_OUTPUT,
+ screen->screen()->root_visual,
+ 0, 0));
+#ifndef QT_NO_DEBUG
+ QByteArray ba("Qt client leader window");
+ Q_XCB_CALL(xcb_change_property(xcb_connection(),
+ XCB_PROP_MODE_REPLACE,
+ m_clientLeader,
+ atom(QXcbAtom::_NET_WM_NAME),
+ atom(QXcbAtom::UTF8_STRING),
+ 8,
+ ba.length(),
+ ba.constData()));
+#endif
+ Q_XCB_CALL(xcb_change_property(xcb_connection(),
+ XCB_PROP_MODE_REPLACE,
+ m_clientLeader,
+ atom(QXcbAtom::WM_CLIENT_LEADER),
+ XCB_ATOM_WINDOW,
+ 32,
+ 1,
+ &m_clientLeader));
+
+#if !defined(QT_NO_SESSIONMANAGER) && defined(XCB_USE_SM)
+ // If we are session managed, inform the window manager about it
+ QByteArray session = qGuiApp->sessionId().toLatin1();
+ if (!session.isEmpty()) {
+ Q_XCB_CALL(xcb_change_property(xcb_connection(),
+ XCB_PROP_MODE_REPLACE,
+ m_clientLeader,
+ atom(QXcbAtom::SM_CLIENT_ID),
+ XCB_ATOM_STRING,
+ 8,
+ session.length(),
+ session.constData()));
+ }
+#endif
+ }
+ return m_clientLeader;
+}
+
#ifdef XCB_USE_XLIB
void *QXcbConnection::xlib_display() const
{
@@ -1578,6 +1631,7 @@ static const char * xcb_atomnames = {
"_KDE_NET_WM_WINDOW_TYPE_OVERRIDE\0"
"_KDE_NET_WM_FRAME_STRUT\0"
+ "_NET_FRAME_EXTENTS\0"
"_NET_STARTUP_INFO\0"
"_NET_STARTUP_INFO_BEGIN\0"