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dix: refine docs on DeliverDeviceEvents() 

Adding a bit more explaination on how events are passed upwards.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
This commit is contained in:
Enrico Weigelt, metux IT consult 2025-03-11 15:19:44 +01:00
parent 788ed2c127
commit 59353fdefd
1 changed files with 4 additions and 1 deletions
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5
dix/events.c
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@ -2867,6 +2867,9 @@ DeliverOneEvent(InternalEvent *event, DeviceIntPtr dev, enum InputLevel level,
* For focused events, DeliverFocusedEvent is called first, and _may_ call * For focused events, DeliverFocusedEvent is called first, and _may_ call
* DeliverDeviceEvents. * DeliverDeviceEvents.
* *
* If the event can't be delivered to the given window itself, trying it's
* parents, up until we find one that's taking the event.
*
* @param pWin Window to deliver event to. * @param pWin Window to deliver event to.
* @param event The events to deliver, not yet in wire format. * @param event The events to deliver, not yet in wire format.
* @param grab Possible grab on a device. * @param grab Possible grab on a device.
@ -2886,6 +2889,7 @@ DeliverDeviceEvents(WindowPtr pWin, InternalEvent *event, GrabPtr grab,
verify_internal_event(event); verify_internal_event(event);
// try the window and all its parent, whichever one first wants the event
while (pWin) { while (pWin) {
if ((mask = EventIsDeliverable(dev, event->any.type, pWin))) { if ((mask = EventIsDeliverable(dev, event->any.type, pWin))) {
/* XI2 events first */ /* XI2 events first */
@ -2910,7 +2914,6 @@ DeliverDeviceEvents(WindowPtr pWin, InternalEvent *event, GrabPtr grab,
if (deliveries > 0) if (deliveries > 0)
break; break;
} }
} }
if ((deliveries < 0) || (pWin == stopAt) || if ((deliveries < 0) || (pWin == stopAt) ||