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dix: split out window owner event delivery from DeliverEventsToWindow

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No functional changes, just for readability.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Jamey Sharp <jamey@minilop.net>
This commit is contained in:
Peter Hutterer 2011-04-12 13:44:30 +10:00
parent a311a03135
commit 536ca28f1b
1 changed files with 55 additions and 20 deletions
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75
dix/events.c
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@ -1987,6 +1987,43 @@ ActivateImplicitGrab(DeviceIntPtr dev, ClientPtr client, WindowPtr win,
return TRUE;
}
enum EventDeliveryState {
EVENT_DELIVERED, /**< Event has been delivered to a client */
EVENT_NOT_DELIVERED, /**< Event was not delivered to any client */
EVENT_SKIP, /**< Event can be discarded by the caller */
EVENT_REJECTED, /**< Event was rejected for delivery to the client */
};
/**
* Attempt event delivery to the client owning the window.
*/
static enum EventDeliveryState
DeliverToWindowOwner(DeviceIntPtr dev, WindowPtr win,
xEvent *events, int count, Mask filter,
GrabPtr grab)
{
/* if nobody ever wants to see this event, skip some work */
if (filter != CantBeFiltered &&
!((wOtherEventMasks(win)|win->eventMask) & filter))
return EVENT_SKIP;
if (IsInterferingGrab(wClient(win), dev, events))
return EVENT_SKIP;
if (!XaceHook(XACE_RECEIVE_ACCESS, wClient(win), win, events, count))
{
int attempt = TryClientEvents(wClient(win), dev, events,
count, win->eventMask,
filter, grab);
if (attempt > 0)
return EVENT_DELIVERED;
if (attempt < 0)
return EVENT_REJECTED;
}
return EVENT_NOT_DELIVERED;
}
/**
* Deliver events to a window. At this point, we do not yet know if the event
* actually needs to be delivered. May activate a grab if the event is a
@ -2023,28 +2060,26 @@ DeliverEventsToWindow(DeviceIntPtr pDev, WindowPtr pWin, xEvent
/* Deliver to window owner */
if ((filter == CantBeFiltered) || CORE_EVENT(pEvents))
{
/* if nobody ever wants to see this event, skip some work */
if (filter != CantBeFiltered &&
!((wOtherEventMasks(pWin)|pWin->eventMask) & filter))
return 0;
enum EventDeliveryState rc;
if (IsInterferingGrab(wClient(pWin), pDev, pEvents))
rc = DeliverToWindowOwner(pDev, pWin, pEvents, count, filter, grab);
switch(rc)
{
case EVENT_SKIP:
return 0;
if (XaceHook(XACE_RECEIVE_ACCESS, wClient(pWin), pWin, pEvents, count))
/* do nothing */;
else if ( (attempt = TryClientEvents(wClient(pWin), pDev, pEvents,
count, pWin->eventMask,
filter, grab)) )
{
if (attempt > 0)
{
deliveries++;
client = wClient(pWin);
deliveryMask = pWin->eventMask;
} else
nondeliveries--;
}
case EVENT_REJECTED:
nondeliveries--;
break;
case EVENT_DELIVERED:
/* We delivered to the owner, with our event mask */
deliveries++;
client = wClient(pWin);
deliveryMask = pWin->eventMask;
break;
case EVENT_NOT_DELIVERED:
break;
}
}
/* CantBeFiltered means only window owner gets the event */