From 9fb0785449b287ba1998e08613b3c2102ec24842 Mon Sep 17 00:00:00 2001
From: Keith Packard <keithp@keithp.com>
Date: Thu, 1 Jul 2010 23:45:50 -0400
Subject: [PATCH] Revert "Revert "dix: use the event mask of the grab for
 TryClientEvents.""

Preparing to merge Peter's branch.

This reverts commit 018c878e9495b21146c8f38617fdd1bf6d8cc73b.
---
 dix/events.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 50 insertions(+), 2 deletions(-)

diff --git a/dix/events.c b/dix/events.c
index e1c3d0a02..ae9847c93 100644
--- a/dix/events.c
+++ b/dix/events.c
@@ -3420,6 +3420,7 @@ CheckPassiveGrabsOnWindow(
     {
 	DeviceIntPtr	gdev;
 	XkbSrvInfoPtr	xkbi = NULL;
+	Mask		mask = 0;
 
 	gdev= grab->modifierDevice;
         if (grab->grabtype == GRABTYPE_CORE)
@@ -3534,6 +3535,9 @@ CheckPassiveGrabsOnWindow(
                 }
                 xE = &core;
                 count = 1;
+                mask = grab->eventMask;
+                if (grab->ownerEvents)
+                    mask |= pWin->eventMask;
             } else if (match & XI2_MATCH)
             {
                 rc = EventToXI2((InternalEvent*)event, &xE);
@@ -3545,6 +3549,34 @@ CheckPassiveGrabsOnWindow(
                     continue;
                 }
                 count = 1;
+
+                /* FIXME: EventToXI2 returns NULL for enter events, so
+                 * dereferencing the event is bad. Internal event types are
+                 * aligned with core events, so the else clause is valid.
+                 * long-term we should use internal events for enter/focus
+                 * as well */
+                if (xE)
+                    mask = grab->xi2mask[device->id][((xGenericEvent*)xE)->evtype/8];
+                else if (event->type == XI_Enter || event->type == XI_FocusIn)
+                    mask = grab->xi2mask[device->id][event->type/8];
+
+                if (grab->ownerEvents && wOtherInputMasks(grab->window))
+                {
+                    InputClientsPtr icp =
+                        wOtherInputMasks(grab->window)->inputClients;
+
+                    while(icp)
+                    {
+                        if (rClient(icp) == rClient(grab))
+                        {
+                            int evtype = (xE) ? ((xGenericEvent*)xE)->evtype : event->type;
+                            mask |= icp->xi2mask[device->id][evtype/8];
+                            break;
+                        }
+
+                        icp = icp->next;
+                    }
+                }
             } else
             {
                 rc = EventToXI((InternalEvent*)event, &xE, &count);
@@ -3555,6 +3587,23 @@ CheckPassiveGrabsOnWindow(
                                 "(%d, %d).\n", device->name, event->type, rc);
                     continue;
                 }
+                mask = grab->eventMask;
+                if (grab->ownerEvents && wOtherInputMasks(grab->window))
+                {
+                    InputClientsPtr icp =
+                        wOtherInputMasks(grab->window)->inputClients;
+
+                    while(icp)
+                    {
+                        if (rClient(icp) == rClient(grab))
+                        {
+                            mask |= icp->mask[device->id];
+                            break;
+                        }
+
+                        icp = icp->next;
+                    }
+                }
             }
 
 	    (*grabinfo->ActivateGrab)(device, grab, currentTime, TRUE);
@@ -3563,8 +3612,7 @@ CheckPassiveGrabsOnWindow(
             {
                 FixUpEventFromWindow(device, xE, grab->window, None, TRUE);
 
-                TryClientEvents(rClient(grab), device, xE, count,
-                                       GetEventFilter(device, xE),
+                TryClientEvents(rClient(grab), device, xE, count, mask,
                                        GetEventFilter(device, xE), grab);
             }