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Improve LEAVE events for border actors

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If an actor is lying on the border of the Stage it might miss the LEAVE
event when the pointer of a device leaves the Stage window. Since the
backend is unsetting the Stage back pointer on the InputDevice we can
queue the emission of a LEAVE event on the pointer actor as well.

http://bugzilla.moblin.org/show_bug.cgi?id=9677
This commit is contained in:
Emmanuele Bassi
2010-02-17 10:46:16 +00:00
parent 719e314b8e
commit fbcaf1e0b3
2 changed files with 39 additions and 6 deletions
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23
clutter/clutter-input-device.c
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@ -261,15 +261,36 @@ void
_clutter_input_device_set_stage (ClutterInputDevice *device,
ClutterStage *stage)
{
ClutterStage *old_stage;
g_return_if_fail (CLUTTER_IS_INPUT_DEVICE (device));
old_stage = device->stage;
device->stage = stage;
/* if we left the stage then we also need to unset the
* cursor actor (and update its :has-pointer property)
*/
if (device->stage == NULL && device->cursor_actor != NULL)
if (device->stage == NULL &&
device->cursor_actor != NULL &&
device->cursor_actor != CLUTTER_ACTOR (old_stage))
{
ClutterEvent cev;
cev.crossing.type = CLUTTER_LEAVE;
cev.crossing.time = device->current_time;
cev.crossing.flags = 0;
cev.crossing.stage = old_stage;
cev.crossing.source = device->cursor_actor;
cev.crossing.x = device->current_x;
cev.crossing.y = device->current_y;
cev.crossing.device = device;
cev.crossing.related = device->stage != NULL
? CLUTTER_ACTOR (device->stage)
: CLUTTER_ACTOR (old_stage);
_clutter_stage_queue_event (old_stage, &cev);
_clutter_actor_set_has_pointer (device->cursor_actor, FALSE);
g_object_weak_unref (G_OBJECT (device->cursor_actor),
cursor_weak_unref,