diff options
Diffstat (limited to 'src/plugins/platforms/xcb')
| -rw-r--r-- | src/plugins/platforms/xcb/qxcbconnection.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/plugins/platforms/xcb/qxcbconnection.cpp b/src/plugins/platforms/xcb/qxcbconnection.cpp index 879d31f29a..d971de766d 100644 --- a/src/plugins/platforms/xcb/qxcbconnection.cpp +++ b/src/plugins/platforms/xcb/qxcbconnection.cpp @@ -1683,12 +1683,14 @@ bool QXcbConnection::compressEvent(xcb_generic_event_t *event, int currentIndex, if (!hasXInput2()) return false; - // compress XI_Motion, but not from tablet devices + // compress XI_Motion if (isXIType(event, m_xiOpCode, XI_Motion)) { #if QT_CONFIG(tabletevent) xXIDeviceEvent *xdev = reinterpret_cast<xXIDeviceEvent *>(event); + // Xlib's XI2 events need memmove, see xi2PrepareXIGenericDeviceEvent() + auto sourceId = *reinterpret_cast<uint16_t *>(reinterpret_cast<char *>(&xdev->sourceid) + 4); if (!QCoreApplication::testAttribute(Qt::AA_CompressTabletEvents) && - const_cast<QXcbConnection *>(this)->tabletDataForDevice(xdev->sourceid)) + const_cast<QXcbConnection *>(this)->tabletDataForDevice(sourceId)) return false; #endif // QT_CONFIG(tabletevent) for (int j = nextIndex; j < eventqueue->size(); ++j) { |