--- /dev/null
+#!/usr/bin/env python3
+# vim: set expandtab shiftwidth=4:
+# -*- Mode: python; coding: utf-8; indent-tabs-mode: nil -*- */
+#
+# Copyright © 2017 Red Hat, Inc.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# the rights to use, copy, modify, merge, publish, distribute, sublicense,
+# and/or sell copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice (including the next
+# paragraph) shall be included in all copies or substantial portions of the
+# Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+# DEALINGS IN THE SOFTWARE.
+#
+
+import sys
+import argparse
+import evdev
+import evdev.ecodes
+import pyudev
+
+
+class Range(object):
+ """Class to keep a min/max of a value around"""
+ def __init__(self):
+ self.min = float('inf')
+ self.max = float('-inf')
+
+ def update(self, value):
+ self.min = min(self.min, value)
+ self.max = max(self.max, value)
+
+
+class Touch(object):
+ """A single data point of a sequence (i.e. one event frame)"""
+
+ def __init__(self, major=None, minor=None, orientation=None):
+ self._major = major
+ self._minor = minor
+ self._orientation = orientation
+ self.dirty = False
+
+ @property
+ def major(self):
+ return self._major
+
+ @major.setter
+ def major(self, major):
+ self._major = major
+ self.dirty = True
+
+ @property
+ def minor(self):
+ return self._minor
+
+ @minor.setter
+ def minor(self, minor):
+ self._minor = minor
+ self.dirty = True
+
+ @property
+ def orientation(self):
+ return self._orientation
+
+ @orientation.setter
+ def orientation(self, orientation):
+ self._orientation = orientation
+ self.dirty = True
+
+ def __str__(self):
+ s = "Touch: major {:3d}".format(self.major)
+ if self.minor is not None:
+ s += ", minor {:3d}".format(self.minor)
+ if self.orientation is not None:
+ s += ", orientation {:+3d}".format(self.orientation)
+ return s
+
+
+class TouchSequence(object):
+ """A touch sequence from beginning to end"""
+
+ def __init__(self, device, tracking_id):
+ self.device = device
+ self.tracking_id = tracking_id
+ self.points = []
+
+ self.is_active = True
+
+ self.is_down = False
+ self.was_down = False
+ self.is_palm = False
+ self.was_palm = False
+
+ self.major_range = Range()
+ self.minor_range = Range()
+
+ def append(self, touch):
+ """Add a Touch to the sequence"""
+ self.points.append(touch)
+ self.major_range.update(touch.major)
+ self.minor_range.update(touch.minor)
+
+ if touch.major < self.device.up or \
+ touch.minor < self.device.up:
+ self.is_down = False
+ elif touch.major > self.device.down or \
+ touch.minor > self.device.down:
+ self.is_down = True
+ self.was_down = True
+
+ self.is_palm = touch.major > self.device.palm
+ if self.is_palm:
+ self.was_palm = True
+
+ def finalize(self):
+ """Mark the TouchSequence as complete (finger is up)"""
+ self.is_active = False
+
+ def avg(self):
+ """Average pressure value of this sequence"""
+ return int(sum([p.pressure for p in self.points])/len(self.points))
+
+ def median(self):
+ """Median pressure value of this sequence"""
+ ps = sorted([p.pressure for p in self.points])
+ idx = int(len(self.points)/2)
+ return ps[idx]
+
+ def __str__(self):
+ return self._str_state() if self.is_active else self._str_summary()
+
+ def _str_summary(self):
+ if not self.points:
+ return "Sequence: no major/minor values recorded"
+
+ s = "Sequence: major: [{:3d}..{:3d}] ".format(
+ self.major_range.min, self.major_range.max
+ )
+ if self.device.has_minor:
+ s += "minor: [{:3d}..{:3d}] ".format(
+ self.minor_range.min, self.minor_range.max
+ )
+ if self.was_down:
+ s += " down"
+ if self.was_palm:
+ s += " palm"
+
+ return s
+
+ def _str_state(self):
+ touch = self.points[-1]
+ s = "{}, tags: {} {}".format(
+ touch,
+ "down" if self.is_down else " ",
+ "palm" if self.is_palm else " "
+ )
+ return s
+
+
+class InvalidDeviceError(Exception):
+ pass
+
+
+class Device(object):
+ def __init__(self, path):
+ if path is None:
+ self.path = self.find_touch_device()
+ else:
+ self.path = path
+
+ self.device = evdev.InputDevice(self.path)
+ # capabilities returns a dict with the EV_* codes as key,
+ # each of which is a list of tuples of (code, AbsInfo)
+ #
+ # Get the abs list first (or empty list if missing),
+ # then extract the pressure absinfo from that
+ caps = self.device.capabilities(absinfo=True).get(
+ evdev.ecodes.EV_ABS, []
+ )
+ codes = [cap[0] for cap in caps]
+
+ if evdev.ecodes.ABS_MT_TOUCH_MAJOR not in codes:
+ raise InvalidDeviceError("device does not have ABS_MT_TOUCH_MAJOR")
+
+ self.has_minor = evdev.ecodes.ABS_MT_TOUCH_MINOR in codes
+ self.has_orientation = evdev.ecodes.ABS_MT_ORIENTATION in codes
+
+ self.up = 0
+ self.down = 0
+ self.palm = 0
+
+ self._init_thresholds_from_udev()
+ self.sequences = []
+ self.touch = Touch(0, 0)
+
+ def find_touch_device(self):
+ context = pyudev.Context()
+ for device in context.list_devices(subsystem='input'):
+ if not device.get('ID_INPUT_TOUCHPAD', 0) and \
+ not device.get('ID_INPUT_TOUCHSCREEN', 0):
+ continue
+
+ if not device.device_node or \
+ not device.device_node.startswith('/dev/input/event'):
+ continue
+
+ return device.device_node
+
+ print("Unable to find a touch device.", file=sys.stderr)
+ sys.exit(1)
+
+ def _init_thresholds_from_udev(self):
+ context = pyudev.Context()
+ ud = pyudev.Devices.from_device_file(context, self.path)
+ v = ud.get('LIBINPUT_ATTR_TOUCH_SIZE_RANGE')
+ if v:
+ self.up, self.down = colon_tuple(v)
+
+ v = ud.get('LIBINPUT_ATTR_PALM_SIZE_THRESHOLD')
+ if v:
+ self.palm = int(v)
+
+ def start_new_sequence(self, tracking_id):
+ self.sequences.append(TouchSequence(self, tracking_id))
+
+ def current_sequence(self):
+ return self.sequences[-1]
+
+ def handle_key(self, event):
+ tapcodes = [evdev.ecodes.BTN_TOOL_DOUBLETAP,
+ evdev.ecodes.BTN_TOOL_TRIPLETAP,
+ evdev.ecodes.BTN_TOOL_QUADTAP,
+ evdev.ecodes.BTN_TOOL_QUINTTAP]
+ if event.code in tapcodes and event.value > 0:
+ print("\rThis tool cannot handle multiple fingers, "
+ "output will be invalid", file=sys.stderr)
+
+ def handle_abs(self, event):
+ if event.code == evdev.ecodes.ABS_MT_TRACKING_ID:
+ if event.value > -1:
+ self.start_new_sequence(event.value)
+ else:
+ s = self.current_sequence()
+ s.finalize()
+ print("\r{}".format(s))
+ elif event.code == evdev.ecodes.ABS_MT_TOUCH_MAJOR:
+ self.touch.major = event.value
+ elif event.code == evdev.ecodes.ABS_MT_TOUCH_MINOR:
+ self.touch.minor = event.value
+ elif event.code == evdev.ecodes.ABS_MT_ORIENTATION:
+ self.touch.orientation = event.value
+
+ def handle_syn(self, event):
+ if self.touch.dirty:
+ self.current_sequence().append(self.touch)
+ print("\r{}".format(self.current_sequence()), end="")
+ self.touch = Touch(major=self.touch.major,
+ minor=self.touch.minor,
+ orientation=self.touch.orientation)
+
+ def handle_event(self, event):
+ if event.type == evdev.ecodes.EV_ABS:
+ self.handle_abs(event)
+ elif event.type == evdev.ecodes.EV_KEY:
+ self.handle_key(event)
+ elif event.type == evdev.ecodes.EV_SYN:
+ self.handle_syn(event)
+
+ def read_events(self):
+ print("Ready for recording data.")
+ print("Touch sizes used: {}:{}".format(self.down, self.up))
+ print("Palm size used: {}".format(self.palm))
+ print("Place a single finger on the device to measure touch size.\n"
+ "Ctrl+C to exit\n")
+
+ for event in self.device.read_loop():
+ self.handle_event(event)
+
+
+def colon_tuple(string):
+ try:
+ ts = string.split(':')
+ t = tuple([int(x) for x in ts])
+ if len(t) == 2 and t[0] >= t[1]:
+ return t
+ except:
+ pass
+
+ msg = "{} is not in format N:M (N >= M)".format(string)
+ raise argparse.ArgumentTypeError(msg)
+
+
+def main(args):
+ parser = argparse.ArgumentParser(
+ description="Measure touch size and orientation"
+ )
+ parser.add_argument('path', metavar='/dev/input/event0',
+ nargs='?', type=str, help='Path to device (optional)')
+ parser.add_argument('--touch-thresholds', metavar='down:up',
+ type=colon_tuple,
+ help='Thresholds when a touch is logically down or up')
+ parser.add_argument('--palm-threshold', metavar='t',
+ type=int, help='Threshold when a touch is a palm')
+ args = parser.parse_args()
+
+ try:
+ device = Device(args.path)
+
+ if args.touch_thresholds is not None:
+ device.down, device.up = args.touch_thresholds
+
+ if args.palm_threshold is not None:
+ device.palm = args.palm_threshold
+
+ device.read_events()
+ except KeyboardInterrupt:
+ pass
+ except (PermissionError, OSError):
+ print("Error: failed to open device")
+ except InvalidDeviceError as e:
+ print("Error: {}".format(e))
+
+if __name__ == "__main__":
+ main(sys.argv)
projects / platform / upstream / libinput.git / commitdiff