Lines Matching full:finger

62 important.  Event filtering and finger tracking is left to user space [#f3]_.
177 looking through a window at someone gently holding a finger against the
179 of the finger actually touching the glass, and one outer region formed by
180 the perimeter of the finger. The center of the touching region (a) is
181 ABS_MT_POSITION_X/Y and the center of the approaching finger (b) is
182 ABS_MT_TOOL_X/Y. The touch diameter is ABS_MT_TOUCH_MAJOR and the finger
183 diameter is ABS_MT_WIDTH_MAJOR. Now imagine the person pressing the finger
213 In addition to the MAJOR parameters, the oval shape of the touch and finger
217 direction of the finger ellipse is given by the vector (a - b).
223 finger or a pen or something else. Finally, the ABS_MT_TRACKING_ID event
284     indicate more than a quarter of a revolution. For an upside-down finger,
316     between different tool types, such as a finger or a pen. In such cases, the
356 the device can distinguish between a finger along the Y axis (0) and a
357 finger along the X axis (1).
382 Finger Tracking
385 The process of finger tracking, i.e., to assign a unique trackingID to each
396 parameters can be used to, e.g., approximate finger pressure or distinguish
397 between index finger and thumb. With the addition of the MINOR parameters,
398 one can also distinguish between a sweeping finger and a pointing finger,
406 in a finger packet must not be recognized as single-touch events.
408 For type A devices, all finger data bypasses input filtering, since
415 .. [#f5] See the section on finger tracking.