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dix: when ungrabbing an active grab, accept pointer grabs (#66720) 

Ungrabbing a device during an active touch grab rejects the grab. Ungrabbing
a device during an active pointer grab accepts the grab.

Rejection is not really an option for a pointer-emulated grab, if a client
has a button mask on the window it would get a ButtonPress emulated after
UngrabDevice. That is against the core grab behaviour.

X.Org Bug 66720 <http://bugs.freedesktop.org/show_bug.cgi?id=66720>

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Jasper St. Pierre <jstpierre@mecheye.net>
This commit is contained in:
Peter Hutterer 2013-07-09 13:27:19 +10:00
parent a2d6932ad4
commit 8eeaa74bc2
2 changed files with 31 additions and 13 deletions
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33
Xi/exevents.c
View File

@ -1223,9 +1223,13 @@ ProcessTouchOwnershipEvent(TouchOwnershipEvent *ev,
else if (ev->reason == XIAcceptTouch) {
int i;
/* Go through the motions of ending the touch if the listener has
/* For pointer-emulated listeners that ungrabbed the active grab,
* the state was forced to LISTENER_HAS_END. Still go
* through the motions of ending the touch if the listener has
* already seen the end. This ensures that the touch record is ended in
* the server. */
* the server.
*/
if (ti->listeners[0].state == LISTENER_HAS_END)
TouchEmitTouchEnd(dev, ti, TOUCH_ACCEPT, ti->listeners[0].listener);
@ -1883,16 +1887,23 @@ DeliverTouchEndEvent(DeviceIntPtr dev, TouchPointInfoPtr ti, InternalEvent *ev,
if (listener->type == LISTENER_POINTER_REGULAR ||
listener->type == LISTENER_POINTER_GRAB) {
rc = DeliverTouchEmulatedEvent(dev, ti, ev, listener, client, win,
grab, xi2mask);
/* Note: If the active grab was ungrabbed, we already changed the
* state to LISTENER_HAS_END but still get here. So we mustn't
* actually send the event.
* This is part two of the hack in DeactivatePointerGrab
*/
if (listener->state != LISTENER_HAS_END) {
rc = DeliverTouchEmulatedEvent(dev, ti, ev, listener, client, win,
grab, xi2mask);
/* Once we send a TouchEnd to a legacy listener, we're already well
* past the accepting/rejecting stage (can only happen on
* GrabModeSync + replay. This listener now gets the end event,
* and we can continue.
*/
if (rc == Success)
listener->state = LISTENER_HAS_END;
/* Once we send a TouchEnd to a legacy listener, we're already well
* past the accepting/rejecting stage (can only happen on
* GrabModeSync + replay. This listener now gets the end event,
* and we can continue.
*/
if (rc == Success)
listener->state = LISTENER_HAS_END;
}
goto out;
}

11
dix/events.c
View File

@ -1522,13 +1522,20 @@ DeactivatePointerGrab(DeviceIntPtr mouse)
for (i = 0; !wasPassive && mouse->touch && i < mouse->touch->num_touches; i++) {
TouchPointInfoPtr ti = mouse->touch->touches + i;
if (ti->active && TouchResourceIsOwner(ti, grab_resource)) {
int mode = XIRejectTouch;
/* Rejecting will generate a TouchEnd, but we must not
emulate a ButtonRelease here. So pretend the listener
already has the end event */
if (grab->grabtype == CORE || grab->grabtype == XI ||
!xi2mask_isset(mouse->deviceGrab.grab->xi2mask, mouse, XI_TouchBegin))
!xi2mask_isset(mouse->deviceGrab.grab->xi2mask, mouse, XI_TouchBegin)) {
mode = XIAcceptTouch;
/* NOTE: we set the state here, but
* ProcessTouchOwnershipEvent() will still call
* TouchEmitTouchEnd for this listener. The other half of
* this hack is in DeliverTouchEndEvent */
ti->listeners[0].state = LISTENER_HAS_END;
TouchListenerAcceptReject(mouse, ti, 0, XIRejectTouch);
}
TouchListenerAcceptReject(mouse, ti, 0, mode);
}
}