[PATCH 12/12] dix: XAllowEvents() on a touch event means accepting it

[Peter Hutterer]

A sync grab is the owner once it gets events. If it doesn't replay the
event it will get all events from this touch, equivalent to accepting it.

If the touch has ended before XAllowEvents() is called, we also now need to
send the TouchEnd event and clean-up since we won't see anything more from
this touch.

Signed-off-by: Peter Hutterer <peter.hutterer at who-t.net>
---
 dix/events.c    | 10 ++++++++++
 dix/touch.c     | 14 ++++++++++++++
 include/input.h |  1 +
 3 files changed, 25 insertions(+)

diff --git a/dix/events.c b/dix/events.c
index 0512052..da9bd38 100644
--- a/dix/events.c
+++ b/dix/events.c
@@ -1742,6 +1742,16 @@ AllowSome(ClientPtr client, TimeStamp time, DeviceIntPtr thisDev, int newState)
         }
         break;
     }
+
+    /* We've unfrozen the grab. If the grab was a touch grab, we're now the
+     * owner and expected to accept/reject it. Reject == ReplayPointer which
+     * we've handled in ComputeFreezes() (during DeactivateGrab) above,
+     * anything else is accept.
+     */
+    if (newState != NOT_GRABBED /* Replay */ &&
+        IsTouchEvent((InternalEvent*)grabinfo->sync.event)) {
+        TouchAcceptAndEnd(thisDev, grabinfo->sync.event->touchid);
+    }
 }
 
 /**
diff --git a/dix/touch.c b/dix/touch.c
index 8b15da6..3918d93 100644
--- a/dix/touch.c
+++ b/dix/touch.c
@@ -1102,3 +1102,17 @@ TouchEmitTouchEnd(DeviceIntPtr dev, TouchPointInfoPtr ti, int flags, XID resourc
     GetDixTouchEnd(&event, dev, ti, flags);
     DeliverTouchEvents(dev, ti, &event, resource);
 }
+
+void
+TouchAcceptAndEnd(DeviceIntPtr dev, int touchid)
+{
+    TouchPointInfoPtr ti = TouchFindByClientID(dev, touchid);
+    if (!ti)
+        return;
+
+    TouchListenerAcceptReject(dev, ti, 0, XIAcceptTouch);
+    if (ti->pending_finish)
+        TouchEmitTouchEnd(dev, ti, 0, 0);
+    if (ti->num_listeners <= 1)
+        TouchEndTouch(dev, ti);
+}
diff --git a/include/input.h b/include/input.h
index 866879b..7eed60b 100644
--- a/include/input.h
+++ b/include/input.h
@@ -591,6 +591,7 @@ extern void TouchEndPhysicallyActiveTouches(DeviceIntPtr dev);
 extern void TouchDeliverDeviceClassesChangedEvent(TouchPointInfoPtr ti,
                                                   Time time, XID resource);
 extern void TouchEmitTouchEnd(DeviceIntPtr dev, TouchPointInfoPtr ti, int flags, XID resource);
+extern void TouchAcceptAndEnd(DeviceIntPtr dev, int touchid);
 
 /* misc event helpers */
 extern Mask GetEventMask(DeviceIntPtr dev, xEvent *ev, InputClientsPtr clients);
-- 
1.8.1.4