static void
tp_gesture_post_pointer_motion(struct tp_dispatch *tp, uint64_t time)
{
struct normalized_coords delta, unaccel;
/* When a clickpad is clicked, combine motion of all active touches */
if (tp->buttons.is_clickpad && tp->buttons.state)
unaccel = tp_get_combined_touches_delta(tp);
else
unaccel = tp_get_average_touches_delta(tp);
delta = tp_filter_motion(tp, &unaccel, time);
if (!normalized_is_zero(delta) || !normalized_is_zero(unaccel)) {
pointer_notify_motion(&tp->device->base, time,
&delta, &unaccel);
}
}
static void
evdev_flush_pending_event(struct evdev_device *device, uint32_t time)
{
int32_t cx, cy;
int slot;
struct libinput_device *base = &device->base;
slot = device->mt.slot;
switch (device->pending_event) {
case EVDEV_NONE:
return;
case EVDEV_RELATIVE_MOTION:
pointer_notify_motion(base,
time,
device->rel.dx,
device->rel.dy);
device->rel.dx = 0;
device->rel.dy = 0;
goto handled;
case EVDEV_ABSOLUTE_MT_DOWN:
touch_notify_touch(base,
time,
slot,
li_fixed_from_int(device->mt.slots[slot].x),
li_fixed_from_int(device->mt.slots[slot].y),
LIBINPUT_TOUCH_TYPE_DOWN);
goto handled;
case EVDEV_ABSOLUTE_MT_MOTION:
touch_notify_touch(base,
time,
slot,
li_fixed_from_int(device->mt.slots[slot].x),
li_fixed_from_int(device->mt.slots[slot].y),
LIBINPUT_TOUCH_TYPE_MOTION);
goto handled;
case EVDEV_ABSOLUTE_MT_UP:
touch_notify_touch(base,
time,
slot,
0, 0,
LIBINPUT_TOUCH_TYPE_UP);
goto handled;
case EVDEV_ABSOLUTE_TOUCH_DOWN:
transform_absolute(device, &cx, &cy);
touch_notify_touch(base,
time,
slot,
li_fixed_from_int(cx),
li_fixed_from_int(cy),
LIBINPUT_TOUCH_TYPE_DOWN);
goto handled;
case EVDEV_ABSOLUTE_MOTION:
transform_absolute(device, &cx, &cy);
if (device->caps & EVDEV_TOUCH) {
touch_notify_touch(base,
time,
slot,
li_fixed_from_int(cx),
li_fixed_from_int(cy),
LIBINPUT_TOUCH_TYPE_DOWN);
} else {
pointer_notify_motion_absolute(base,
time,
li_fixed_from_int(cx),
li_fixed_from_int(cy));
}
goto handled;
case EVDEV_ABSOLUTE_TOUCH_UP:
touch_notify_touch(base,
time,
0, 0, 0, LIBINPUT_TOUCH_TYPE_UP);
goto handled;
}
assert(0 && "Unknown pending event type");
handled:
device->pending_event = EVDEV_NONE;
}
static void
touchpad_update_state(struct touchpad_dispatch *touchpad, uint32_t time)
{
int motion_index;
int center_x, center_y;
double dx = 0.0, dy = 0.0;
struct libinput_device *base = &touchpad->device->base;
if (touchpad->reset ||
touchpad->last_finger_state != touchpad->finger_state) {
touchpad->reset = 0;
touchpad->motion_count = 0;
touchpad->event_mask = TOUCHPAD_EVENT_NONE;
touchpad->event_mask_filter =
TOUCHPAD_EVENT_ABSOLUTE_X | TOUCHPAD_EVENT_ABSOLUTE_Y;
touchpad->last_finger_state = touchpad->finger_state;
process_fsm_events(touchpad, time);
return;
}
touchpad->last_finger_state = touchpad->finger_state;
if (!(touchpad->event_mask & TOUCHPAD_EVENT_REPORT))
return;
else
touchpad->event_mask &= ~TOUCHPAD_EVENT_REPORT;
if ((touchpad->event_mask & touchpad->event_mask_filter) !=
touchpad->event_mask_filter)
return;
touchpad->event_mask_filter = TOUCHPAD_EVENT_ABSOLUTE_ANY;
touchpad->event_mask = 0;
/* Avoid noise by moving center only when delta reaches a threshold
* distance from the old center. */
if (touchpad->motion_count > 0) {
center_x = hysteresis(touchpad->hw_abs.x,
touchpad->hysteresis.center_x,
touchpad->hysteresis.margin_x);
center_y = hysteresis(touchpad->hw_abs.y,
touchpad->hysteresis.center_y,
touchpad->hysteresis.margin_y);
} else {
center_x = touchpad->hw_abs.x;
center_y = touchpad->hw_abs.y;
}
touchpad->hysteresis.center_x = center_x;
touchpad->hysteresis.center_y = center_y;
touchpad->hw_abs.x = center_x;
touchpad->hw_abs.y = center_y;
/* Update motion history tracker */
motion_index = (touchpad->motion_index + 1) % TOUCHPAD_HISTORY_LENGTH;
touchpad->motion_index = motion_index;
touchpad->motion_history[motion_index].x = touchpad->hw_abs.x;
touchpad->motion_history[motion_index].y = touchpad->hw_abs.y;
if (touchpad->motion_count < 4)
touchpad->motion_count++;
if (touchpad->motion_count >= 4) {
touchpad_get_delta(touchpad, &dx, &dy);
filter_motion(touchpad, &dx, &dy, time);
if (touchpad->finger_state == TOUCHPAD_FINGERS_ONE) {
pointer_notify_motion(
base,
time,
li_fixed_from_double(dx),
li_fixed_from_double(dy));
} else if (touchpad->finger_state == TOUCHPAD_FINGERS_TWO) {
if (dx != 0.0)
pointer_notify_axis(
base,
time,
LIBINPUT_POINTER_AXIS_HORIZONTAL_SCROLL,
li_fixed_from_double(dx));
if (dy != 0.0)
pointer_notify_axis(
base,
time,
LIBINPUT_POINTER_AXIS_VERTICAL_SCROLL,
li_fixed_from_double(dy));
}
}
if (!(touchpad->state & TOUCHPAD_STATE_MOVE) &&
((int)dx || (int)dy)) {
touchpad->state |= TOUCHPAD_STATE_MOVE;
push_fsm_event(touchpad, FSM_EVENT_MOTION);
}
process_fsm_events(touchpad, time);
}
