static inline void
evdev_process_relative(struct evdev_device *device,
struct input_event *e, uint32_t time)
{
struct libinput_device *base = &device->base;
switch (e->code) {
case REL_X:
if (device->pending_event != EVDEV_RELATIVE_MOTION)
evdev_flush_pending_event(device, time);
device->rel.dx += li_fixed_from_int(e->value);
device->pending_event = EVDEV_RELATIVE_MOTION;
break;
case REL_Y:
if (device->pending_event != EVDEV_RELATIVE_MOTION)
evdev_flush_pending_event(device, time);
device->rel.dy += li_fixed_from_int(e->value);
device->pending_event = EVDEV_RELATIVE_MOTION;
break;
case REL_WHEEL:
evdev_flush_pending_event(device, time);
switch (e->value) {
case -1:
/* Scroll down */
case 1:
/* Scroll up */
pointer_notify_axis(
base,
time,
LIBINPUT_POINTER_AXIS_VERTICAL_SCROLL,
-1 * e->value * DEFAULT_AXIS_STEP_DISTANCE);
break;
default:
break;
}
break;
case REL_HWHEEL:
evdev_flush_pending_event(device, time);
switch (e->value) {
case -1:
/* Scroll left */
case 1:
/* Scroll right */
pointer_notify_axis(
base,
time,
LIBINPUT_POINTER_AXIS_HORIZONTAL_SCROLL,
e->value * DEFAULT_AXIS_STEP_DISTANCE);
break;
default:
break;
}
}
}
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);
}
