usb/input/atp.c

144     atp_sysctl_scale_factor_handler, "IU", "movement scale factor");
149     "the small movement black-hole for filtering noise");
151  * The movement threshold for a stroke; this is the maximum difference
160  * Strokes which accumulate at least this amount of absolute movement
167     "strokes with at least this amt. of movement are considered slides");
300 	/* Fields containing information about movement. */
301 	int   delta_mickeys;    /* change in location (un-smoothened movement)*/
303 	int   movement;         /* current smoothened movement */
333 	u_int                cum_movement; /* cum. absolute movement so far */
438 /* movement detection */
901 	 * *not* be interpreted as a movement.
911 	 * Disregard the component's movement if its cumulative
973  * Return TRUE if any movement is detected.
981 	boolean_t   movement = FALSE;
1039 			atp_advance_stroke_state(sc, stroke, &movement);
1099 			    stroke->components[X].movement,
1107 			    stroke->components[Y].movement,
1115 	return (movement);
1134 	 * cumulative movement, then it is considered a 'slide'.
1228  * 'movement' as a side-effect.
1232     boolean_t *movement)
1246 		*movement = TRUE;
1251 	/* Convert touch strokes to slides upon detecting movement or age. */
1462 		return; /* returning (numerator == 0) will imply zero movement*/
1465 	 * In order to determine the overall movement scale factor,
1484  * Compute a smoothened value for the stroke's movement from
1496 	 * threshold. This has the effect of filtering away movement
1502 	} else {                /* large movement */
1508 	/* Get the scale ratio and smoothen movement. */
1511 		stroke->components[X].movement = 0;
1512 		stroke->components[Y].movement = 0;
1515 		stroke->components[X].movement =
1517 		stroke->components[Y].movement =
1521 			abs(stroke->components[X].movement) +
1522 			abs(stroke->components[Y].movement);
1525 	return ((stroke->components[X].movement != 0) ||
1526 	    (stroke->components[Y].movement != 0));
1664 	 * limited information--they encode movement deltas and button
1877 				if ((stroke->components[X].movement) ||
1878 				    (stroke->components[Y].movement)) {
1879 					dx += stroke->components[X].movement;
1880 					dy += stroke->components[Y].movement;
1885 			 * Disregard movement if multiple