diff options
| author | Tang Haixiang <tanghaixiang@uniontech.com> | 2021-06-18 14:29:01 +0800 |
|---|---|---|
| committer | Andy Shaw <andy.shaw@qt.io> | 2022-09-16 19:53:37 +0200 |
| commit | 7380edaeb81622d3685fb989809d03a5f2d95cfa (patch) | |
| tree | ef04f6dc00623b26031067facb8580adfcb197d9 /src/plugins/platforms/xcb/qxcbconnection_xi2.cpp | |
| parent | 678928f4af63b3c4cddde79b0966dba6d22728d1 (diff) | |
xcb: Delete touch points without target windows
When XCB_INPUT_TOUCH_BEGIN closes a popup, we then receive
XCB_INPUT_TOUCH_END, and cannot find a target window (because it's
destroyed). If we don't deliver it, we need to at least clear the
stored point from QPointingDevicePrivate::activePoints. Then when
we deliver the next touch press, m_fakeMouseSourcePointId also
needs to be reset.
It's now even more paramount that autotests (and real-world
touchscreens) must never omit any active touchpoint from a touch event.
If a point doesn't move, it must be included in the QTouchEvent, with
Stationary state. If not, QGuiApp::processTouchEvent() could generate
multiple TouchBegin events in a row, which gets other bits of logic
confused, here and there.
Fixes: QTBUG-94557
Fixes: QTBUG-98519
Fixes: QTBUG-102751
Fixes: QTBUG-103706
Change-Id: Ia95e410a2bb8bc7784aa5d296fac2b89e53a9f55
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
(cherry picked from commit efc02f9cc301f98c77079adae026ffd07f50d5ab)
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Diffstat (limited to 'src/plugins/platforms/xcb/qxcbconnection_xi2.cpp')
| -rw-r--r-- | src/plugins/platforms/xcb/qxcbconnection_xi2.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/plugins/platforms/xcb/qxcbconnection_xi2.cpp b/src/plugins/platforms/xcb/qxcbconnection_xi2.cpp index 13104f52e2..147245b76e 100644 --- a/src/plugins/platforms/xcb/qxcbconnection_xi2.cpp +++ b/src/plugins/platforms/xcb/qxcbconnection_xi2.cpp @@ -591,8 +591,12 @@ void QXcbConnection::xi2HandleEvent(xcb_ge_event_t *event) event->event_type, xiDeviceEvent->sequence, xiDeviceEvent->detail, fixed1616ToReal(xiDeviceEvent->event_x), fixed1616ToReal(xiDeviceEvent->event_y), fixed1616ToReal(xiDeviceEvent->root_x), fixed1616ToReal(xiDeviceEvent->root_y),xiDeviceEvent->event); - if (QXcbWindow *platformWindow = platformWindowFromId(xiDeviceEvent->event)) + if (QXcbWindow *platformWindow = platformWindowFromId(xiDeviceEvent->event)) { xi2ProcessTouch(xiDeviceEvent, platformWindow); + } else { // When the window cannot be matched, delete it from touchPoints + if (TouchDeviceData *dev = touchDeviceForId(xiDeviceEvent->sourceid)) + dev->touchPoints.remove((xiDeviceEvent->detail % INT_MAX)); + } break; } } else if (xiEnterEvent && !xi2MouseEventsDisabled() && eventListener) { |