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wlr_seat_touch: Don't destroy touch point with surface

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When the surface is destroyed clear it's reference but wait for the up
event to destroy the touch point via wlr_seat_touch_notify_up().

If the surface is destroyed before the up event we end up with
incomplete sequences sent to the client like

[915821.276] wl_touch@3.down(146, 2475027, wl_surface@38, 0, 236.000000, 515.000000)
[915821.608] wl_touch@3.frame()
[915821.637] wl_touch@3.motion(2475027, 0, 236.000000, 515.000000)
[915821.779] wl_touch@3.frame()

so there's never an up event. While it should be something like

[2461229.051] wl_touch@3.down(81, 3236959, wl_surface@34, 0, 218.000000, 478.000000)
[2461229.435] wl_touch@3.frame()
[2461229.484] wl_touch@3.motion(3236959, 0, 218.000000, 478.000000)
[2461229.636] wl_touch@3.frame()
[2461277.520] wl_touch@3.up(82, 3237007, 0)
[2461277.681] wl_touch@3.frame()

this confuses toolkits intepreting the next down event incorrectly. So
don't destroy the touch point too early.
This commit is contained in:
Guido Günther 2019-06-28 11:07:45 +02:00 • committed by Simon Ser
parent c2fb8a84a2
commit df3f0ffbb0
1 changed files with 4 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

5
types/seat/wlr_seat_touch.c
View file

@ -109,7 +109,10 @@ static void touch_point_handle_surface_destroy(struct wl_listener *listener,
void *data) {
struct wlr_touch_point *point =
wl_container_of(listener, point, surface_destroy);
touch_point_destroy(point);
// Touch point itself is destroyed on up event
point->surface = NULL;
wl_list_remove(&point->surface_destroy.link);
wl_list_init(&point->surface_destroy.link);
}
static struct wlr_touch_point *touch_point_create(