xcb: drop Xinerama support

[ChangeLog][Important Behavior Changes][X11] Xinerama is no longer
supported.

Fixes: QTBUG-86082
Change-Id: Ieb57d9035e1659fc22bf8333247fc3573fb62992
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
Reviewed-by: Gatis Paeglis <gatis.paeglis@qt.io>

1 files changed, 0 insertions, 14 deletions

diff --git a/src/plugins/platforms/xcb/qxcbconnection_basic.cpp b/src/plugins/platforms/xcb/qxcbconnection_basic.cpp
index 18dee89adb..020412fc87 100644
--- a/src/plugins/platforms/xcb/qxcbconnection_basic.cpp
+++ b/src/plugins/platforms/xcb/qxcbconnection_basic.cpp
@@ -43,7 +43,6 @@
 #include <xcb/shm.h>
 #include <xcb/sync.h>
 #include <xcb/xfixes.h>
-#include <xcb/xinerama.h>
 #include <xcb/render.h>
 #include <xcb/xinput.h>
 #define explicit dont_use_cxx_explicit
@@ -145,8 +144,6 @@ QXcbBasicConnection::QXcbBasicConnection(const char *displayName)
         initializeShm();
     if (!qEnvironmentVariableIsSet("QT_XCB_NO_XRANDR"))
         initializeXRandr();
-    if (!m_hasXRandr)
-        initializeXinerama();
     initializeXFixes();
     initializeXRender();
     if (!qEnvironmentVariableIsSet("QT_XCB_NO_XI2"))
@@ -307,17 +304,6 @@ void QXcbBasicConnection::initializeXRender()
     m_xrenderVersion.second = xrenderQuery->minor_version;
 }
 
-void QXcbBasicConnection::initializeXinerama()
-{
-    const xcb_query_extension_reply_t *reply = xcb_get_extension_data(m_xcbConnection, &xcb_xinerama_id);
-    if (!reply || !reply->present)
-        return;
-
-    auto xineramaActive = Q_XCB_REPLY(xcb_xinerama_is_active, m_xcbConnection);
-    if (xineramaActive && xineramaActive->state)
-        m_hasXinerama = true;
-}
-
 void QXcbBasicConnection::initializeXFixes()
 {
     const xcb_query_extension_reply_t *reply = xcb_get_extension_data(m_xcbConnection, &xcb_xfixes_id);