From: Emmanuele Bassi <ebassi@openedhand.com>
Date: Wed, 24 Sep 2008 10:12:23 +0000 (+0000)
Subject: 2008-09-24  Emmanuele Bassi  <ebassi@linux.intel.com>
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a87f34c1773b65c65ad93150607ac45ddbb726c1;p=profile%2Fivi%2Fclutter.git

2008-09-24  Emmanuele Bassi  <ebassi@linux.intel.com>

	Bug 1130 - CLUTTER_MOTION is not emitted when time goes backwards.

	* clutter/clutter-main.c (clutter_do_event): Check for time
	rollbacks inside the motion event throttling. (Pierce Liu)
---

diff --git a/ChangeLog b/ChangeLog
index ee714a4..57ce456 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2008-09-24  Emmanuele Bassi  <ebassi@linux.intel.com>
+
+	Bug 1130 - CLUTTER_MOTION is not emitted when time goes backwards.
+
+	* clutter/clutter-main.c (clutter_do_event): Check for time
+	rollbacks inside the motion event throttling. (Pierce Liu)
+
 2008-09-23  Emmanuele Bassi  <ebassi@linux.intel.com>
 
 	* clutter/clutter-timeout-pool.c: Reword previous commit.
diff --git a/clutter/clutter-main.c b/clutter/clutter-main.c
index a6e0328..c73a78b 100644
--- a/clutter/clutter-main.c
+++ b/clutter/clutter-main.c
@@ -1903,7 +1903,16 @@ clutter_do_event (ClutterEvent *event)
                   delta,
                   event->any.time);
 
-            if (event->any.time < (local_motion_time + delta))
+            /* we need to guard against roll-overs and the
+             * case where the time is rolled backwards and
+             * the backend is not ensuring a monotonic clock
+             * for the events.
+             *
+             * see:
+             *   http://bugzilla.openedhand.com/show_bug.cgi?id=1130
+             */
+            if (event->any.time >= local_motion_time &&
+                event->any.time < (local_motion_time + delta))
               break;
             else
               local_motion_time = event->any.time;