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Description: ensure that QTabletEvent is not pre-accepted before sending
In QWidget-world it's normal for input events to have the accepted
flag false by default, so that it's obvious after visiting a widget
subclass that does not override a particular handler function that it
did not handle that event type at all. For tablet events in
particular, the contract (to which we've been paying more attention to
ensure that QTBUG-47007 remains properly fixed) is that if a
QTabletEvent is not accepted, a mouse event will follow.
Tablet-unaware applications need to get the same mouse events from a
Wacom stylus as they would receive from an actual mouse.
.
In this case the issue was missing hover events (mouse movements
in which no mouse button is pressed). Without those, the enterEvent
and exitEvent virtuals are also not invoked properly.
Origin: upstream, https://code.qt.io/cgit/qt/qtbase.git/commit/?id=b4b706d454b785ae
Bug: https://bugs.debian.org/935627
Last-Update: 2019-08-24
--- a/src/widgets/kernel/qapplication.cpp
+++ b/src/widgets/kernel/qapplication.cpp
@@ -3374,6 +3374,7 @@ bool QApplication::notify(QObject *recei
tablet->tangentialPressure(), tablet->rotation(), tablet->z(),
tablet->modifiers(), tablet->uniqueId(), tablet->button(), tablet->buttons());
te.spont = e->spontaneous();
+ te.setAccepted(false);
res = d->notify_helper(w, w == receiver ? tablet : &te);
eventAccepted = ((w == receiver) ? tablet : &te)->isAccepted();
e->spont = false;
--- a/src/widgets/kernel/qwidgetwindow.cpp
+++ b/src/widgets/kernel/qwidgetwindow.cpp
@@ -1021,6 +1021,7 @@ void QWidgetWindow::handleTabletEvent(QT
event->pressure(), event->xTilt(), event->yTilt(), event->tangentialPressure(),
event->rotation(), event->z(), event->modifiers(), event->uniqueId(), event->button(), event->buttons());
ev.setTimestamp(event->timestamp());
+ ev.setAccepted(false);
QGuiApplication::forwardEvent(widget, &ev, event);
event->setAccepted(ev.isAccepted());
}
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