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seat: Do not assert on corner touch cases

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Consider the cases where we get a touch move or touch up but we never
received a touch down before.

In the case of move, we'll simulate a touchDown right there and move on
with reality.
In the case of touch up, we'll just ignore the event as simulating could
just be more confusing.

BUG: 450338
This commit is contained in:
Aleix Pol 2022-02-19 23:10:01 +01:00
parent 9e25fd0468
commit 62637c1a92
1 changed files with 15 additions and 4 deletions
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19
src/wayland/seat_interface.cpp
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@ -1072,7 +1072,12 @@ void SeatInterface::notifyTouchMotion(qint32 id, const QPointF &globalPosition)
if (!d->touch) {
return;
}
Q_ASSERT(d->globalTouch.ids.contains(id));
auto itTouch = d->globalTouch.ids.constFind(id);
if (itTouch == d->globalTouch.ids.constEnd()) {
// This can happen in cases where the interaction started while the device was asleep
qCWarning(KWAYLAND_SERVER) << "Detected a touch move that never has been down, discarding";
return;
}
const auto pos = globalPosition - d->globalTouch.focus.offset;
if (isDragTouch()) {
@ -1093,7 +1098,7 @@ void SeatInterface::notifyTouchMotion(qint32 id, const QPointF &globalPosition)
}
}
}
Q_EMIT touchMoved(id, d->globalTouch.ids[id], globalPosition);
Q_EMIT touchMoved(id, *itTouch, globalPosition);
}
void SeatInterface::notifyTouchUp(qint32 id)
@ -1101,7 +1106,13 @@ void SeatInterface::notifyTouchUp(qint32 id)
if (!d->touch) {
return;
}
Q_ASSERT(d->globalTouch.ids.contains(id));
auto itTouch = d->globalTouch.ids.find(id);
if (itTouch == d->globalTouch.ids.end()) {
// This can happen in cases where the interaction started while the device was asleep
qCWarning(KWAYLAND_SERVER) << "Detected a touch that never started, discarding";
return;
}
const qint32 serial = d->display->nextSerial();
if (d->drag.mode == SeatInterfacePrivate::Drag::Mode::Touch && d->drag.dragImplicitGrabSerial == d->globalTouch.ids.value(id)) {
// the implicitly grabbing touch point has been upped
@ -1119,7 +1130,7 @@ void SeatInterface::notifyTouchUp(qint32 id)
}
}
d->globalTouch.ids.remove(id);
d->globalTouch.ids.erase(itTouch);
}
void SeatInterface::notifyTouchFrame()