diff options
| author | Alexander Volkov <a.volkov@rusbitech.ru> | 2017-02-15 14:02:28 +0300 |
|---|---|---|
| committer | Alexander Volkov <a.volkov@rusbitech.ru> | 2017-02-16 09:53:50 +0000 |
| commit | bee82432ebf37312ef28846722fbf925ef4f04c8 (patch) | |
| tree | 80b75d90a8330b3abe912e8b45b12405afd87ff2 | |
| parent | a373a01ed73b29b237e2f3a7c69955dd160fc34d (diff) | |
xcb: Allow to disable XInput 2 support by setting QT_XCB_NO_XI2 env var
Use of XInput 2 may result in regressions. For example we call
XISelectEvents for each window every time a device plugs/unplugs.
It causes significant delays when there are many native windows.
Change-Id: I60b799bb667d0e4bca1f9c52cdaa07b04bcc749f
Task-number: QTBUG-57013
Reviewed-by: Gatis Paeglis <gatis.paeglis@qt.io>
| -rw-r--r-- | src/plugins/platforms/xcb/qxcbconnection.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/plugins/platforms/xcb/qxcbconnection.cpp b/src/plugins/platforms/xcb/qxcbconnection.cpp index 1af2cf9b89..5e600c740b 100644 --- a/src/plugins/platforms/xcb/qxcbconnection.cpp +++ b/src/plugins/platforms/xcb/qxcbconnection.cpp @@ -631,7 +631,8 @@ QXcbConnection::QXcbConnection(QXcbNativeInterface *nativeInterface, bool canGra initializeXRender(); #if defined(XCB_USE_XINPUT2) m_xi2Enabled = false; - initializeXInput2(); + if (!qEnvironmentVariableIsSet("QT_XCB_NO_XI2")) + initializeXInput2(); #endif initializeXShape(); initializeXKB(); |