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wayland: Use a fake millisecond monotonic time source for event times

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The majority of Clutter input events require a time so that that the
upper levels of abstraction can identify the ordering of events and also
work out a click count.

Although some Wayland events have microsecond timestamps not all those
that Clutter expects do have. Therefore we would need to create some
fake times for those events. Instead we always calculate our own time
using the monotonic time.

https://bugzilla.gnome.org/show_bug.cgi?id=697285
This commit is contained in:
Rob Bradford 2013-06-27 16:01:56 +01:00
parent 6521701e29
commit 3d646804d1
1 changed files with 17 additions and 6 deletions
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23
clutter/wayland/clutter-input-device-wayland.c
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@ -57,6 +57,16 @@ G_DEFINE_TYPE (ClutterInputDeviceWayland,
clutter_input_device_wayland,
CLUTTER_TYPE_INPUT_DEVICE);
/* This gives us a fake time source for higher level abstractions to have an
* understanding of when an event happens. All that matters are that this is a
* monotonic increasing millisecond accurate time for events to be compared with.
*/
static guint32
_clutter_wayland_get_time (void)
{
return g_get_monotonic_time () / 1000;
}
static void
clutter_wayland_handle_motion (void *data,
struct wl_pointer *pointer,
@ -70,7 +80,7 @@ clutter_wayland_handle_motion (void *data,
event = clutter_event_new (CLUTTER_MOTION);
event->motion.stage = stage_cogl->wrapper;
event->motion.device = CLUTTER_INPUT_DEVICE (device);
event->motion.time = _time;
event->motion.time = _clutter_wayland_get_time();
event->motion.modifier_state = 0;
event->motion.x = wl_fixed_to_double(x);
event->motion.y = wl_fixed_to_double(y);
@ -100,7 +110,7 @@ clutter_wayland_handle_button (void *data,
event = clutter_event_new (type);
event->button.stage = stage_cogl->wrapper;
event->button.device = CLUTTER_INPUT_DEVICE (device);
event->button.time = /*_time*/ serial;
event->button.time = _clutter_wayland_get_time();
event->button.x = device->x;
event->button.y = device->y;
event->button.modifier_state =
@ -135,7 +145,7 @@ clutter_wayland_handle_axis (void *data,
gdouble delta_x, delta_y;
event = clutter_event_new (CLUTTER_SCROLL);
event->scroll.time = time;
event->scroll.time = _clutter_wayland_get_time();
event->scroll.stage = stage_cogl->wrapper;
event->scroll.direction = CLUTTER_SCROLL_SMOOTH;
event->scroll.x = device->x;
@ -268,7 +278,8 @@ clutter_wayland_handle_key (void *data,
event = _clutter_key_event_new_from_evdev ((ClutterInputDevice *) device,
stage_cogl->wrapper,
device->xkb,
_time, key, state);
_clutter_wayland_get_time(),
key, state);
_clutter_event_push (event, FALSE);
@ -337,7 +348,7 @@ clutter_wayland_handle_pointer_enter (void *data,
event = clutter_event_new (CLUTTER_ENTER);
event->crossing.stage = stage_cogl->wrapper;
event->crossing.time = 0; /* ?! */
event->crossing.time = _clutter_wayland_get_time();
event->crossing.x = wl_fixed_to_double(x);
event->crossing.y = wl_fixed_to_double(y);
event->crossing.source = CLUTTER_ACTOR (stage_cogl->wrapper);
@ -385,7 +396,7 @@ clutter_wayland_handle_pointer_leave (void *data,
event = clutter_event_new (CLUTTER_LEAVE);
event->crossing.stage = stage_cogl->wrapper;
event->crossing.time = 0; /* ?! */
event->crossing.time = _clutter_wayland_get_time();
event->crossing.x = device->x;
event->crossing.y = device->y;
event->crossing.source = CLUTTER_ACTOR (stage_cogl->wrapper);