[PATCH v2] Xi: force dtime to 0 on the first BarrierHit

[Peter Hutterer]

dtime to the previous event is 0 on the first BarrierHit event.

Signed-off-by: Peter Hutterer <peter.hutterer at who-t.net>
---
changes to v1:
- check pbd->hit to see if we're the start of a new sequence instead of a
timestamp of 0.

 Xi/xibarriers.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Xi/xibarriers.c b/Xi/xibarriers.c
index a225cbc..fccab86 100644
--- a/Xi/xibarriers.c
+++ b/Xi/xibarriers.c
@@ -435,6 +435,7 @@ input_constrain_cursor(DeviceIntPtr dev, ScreenPtr screen,
     dir = barrier_get_direction(current_x, current_y, x, y);
 
     while (dir != 0) {
+        int new_sequence;
         struct PointerBarrierDevice *pbd;
 
         c = barrier_find_nearest(cs, master, dir, current_x, current_y, x, y);
@@ -444,6 +445,8 @@ input_constrain_cursor(DeviceIntPtr dev, ScreenPtr screen,
         nearest = &c->barrier;
 
         pbd = GetBarrierDevice(c, master->id);
+        new_sequence = !pbd->hit;
+
         pbd->seen = TRUE;
         pbd->hit = TRUE;
 
@@ -466,7 +469,7 @@ input_constrain_cursor(DeviceIntPtr dev, ScreenPtr screen,
         ev.event_id = pbd->barrier_event_id;
         ev.barrierid = c->id;
 
-        ev.dt = ms - pbd->last_timestamp;
+        ev.dt = new_sequence ? 0 : ms - pbd->last_timestamp;
         ev.window = c->window;
         pbd->last_timestamp = ms;
 
-- 
1.8.1.4