Merge remote-tracking branch 'whot/barriers'

Conflicts:
	Xi/xichangehierarchy.c

Small conflict with the patch from

	Xi: don't use devices after removing them

Was easily resolved by hand.

Signed-off-by: Keith Packard <keithp@keithp.com>

1 files changed, 24 insertions, 0 deletions

diff --git a/dix/events.c b/dix/events.c
index 3836d2f17..73593626e 100644
--- a/dix/events.c
+++ b/dix/events.c
@@ -219,6 +219,9 @@ static void CheckVirtualMotion(DeviceIntPtr pDev, QdEventPtr qe,
 static void CheckPhysLimits(DeviceIntPtr pDev, CursorPtr cursor,
                             Bool generateEvents, Bool confineToScreen,
                             ScreenPtr pScreen);
+static Bool IsWrongPointerBarrierClient(ClientPtr client,
+                                        DeviceIntPtr dev,
+                                        xEvent *event);
 
 /** Key repeat hack. Do not use but in TryClientEvents */
 extern BOOL EventIsKeyRepeat(xEvent *event);
@@ -2092,6 +2095,9 @@ DeliverEventToInputClients(DeviceIntPtr dev, InputClients * inputclients,
         if (IsInterferingGrab(client, dev, events))
             continue;
 
+        if (IsWrongPointerBarrierClient(client, dev, events))
+            continue;
+
         mask = GetEventMask(dev, events, inputclients);
 
         if (XaceHook(XACE_RECEIVE_ACCESS, client, win, events, count))
@@ -2446,6 +2452,8 @@ FixUpEventFromWindow(SpritePtr pSprite,
         case XI_DeviceChanged:
         case XI_HierarchyChanged:
         case XI_PropertyEvent:
+        case XI_BarrierHit:
+        case XI_BarrierLeave:
             return;
         default:
             break;
@@ -6080,3 +6088,19 @@ IsInterferingGrab(ClientPtr client, DeviceIntPtr dev, xEvent *event)
 
     return FALSE;
 }
+
+/* PointerBarrier events are only delivered to the client that created that
+ * barrier */
+static Bool
+IsWrongPointerBarrierClient(ClientPtr client, DeviceIntPtr dev, xEvent *event)
+{
+    xXIBarrierEvent *ev = (xXIBarrierEvent*)event;
+
+    if (ev->type != GenericEvent || ev->extension != IReqCode)
+        return FALSE;
+
+    if (ev->evtype != XI_BarrierHit && ev->evtype != XI_BarrierLeave)
+        return FALSE;
+
+    return client->index != CLIENT_ID(ev->barrier);
+}