1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
#!/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
try:
import evdev
import evdev.ecodes
import pyudev
except ModuleNotFoundError as e:
print('Error: {}'.format(str(e)), file=sys.stderr)
print('One or more python modules are missing. Please install those '
'modules and re-run this tool.')
sys.exit(1)
MINIMUM_EVENT_COUNT = 1000
class InvalidDeviceError(Exception):
pass
class Delta(object):
def __init__(self, x=0, y=0):
self.x = x
self.y = y
def __bool_(self):
return self.x != 0 or self.y != 0
class Device(object):
def __init__(self, path):
if path is None:
path = self._find_trackpoint_device()
self.path = path
self.device = evdev.InputDevice(self.path)
print("Using {}: {}\n".format(self.device.name, path))
self.deltas = []
self.nxdeltas = 0
self.nydeltas = 0
self.current_delta = Delta()
self.max_delta = Delta(0, 0)
def _find_trackpoint_device(self):
context = pyudev.Context()
for device in context.list_devices(subsystem='input'):
if not device.get('ID_INPUT_POINTINGSTICK', 0):
continue
if not device.device_node or \
not device.device_node.startswith('/dev/input/event'):
continue
return device.device_node
raise InvalidDeviceError("Unable to find a trackpoint device")
def handle_rel(self, event):
if event.code == evdev.ecodes.REL_X:
self.current_delta.x = event.value
if self.max_delta.x < abs(event.value):
self.max_delta.x = abs(event.value)
elif event.code == evdev.ecodes.REL_Y:
self.current_delta.y = event.value
if self.max_delta.y < abs(event.value):
self.max_delta.y = abs(event.value)
def handle_syn(self, event):
self.deltas.append(self.current_delta)
if self.current_delta.x != 0:
self.nxdeltas += 1
if self.current_delta.y != 0:
self.nydeltas += 1
self.current_delta = Delta()
print("\rTrackpoint sends: max x:{:3d}, max y:{:3} samples [{}, {}]"
.format(
self.max_delta.x, self.max_delta.y,
self.nxdeltas, self.nydeltas,
), end="")
def read_events(self):
for event in self.device.read_loop():
if event.type == evdev.ecodes.EV_REL:
self.handle_rel(event)
elif event.type == evdev.ecodes.EV_SYN:
self.handle_syn(event)
def print_summary(self):
print("\n") # undo the \r from the status line
if not self.deltas:
return
if len(self.deltas) < MINIMUM_EVENT_COUNT:
print("WARNING: *******************************************\n"
"WARNING: Insufficient samples, data is not reliable\n"
"WARNING: *******************************************\n")
print("Histogram for x axis deltas, in counts of 5")
xs = [d.x for d in self.deltas]
minx = min(xs)
maxx = max(xs)
for i in range(minx, maxx + 1):
xc = len([x for x in xs if x == i])
xc = int(xc/5) # counts of 5 is enough
print("{:4}: {}".format(i, "+" * xc, end=""))
print("Histogram for y axis deltas, in counts of 5")
ys = [d.y for d in self.deltas]
miny = min(ys)
maxy = max(ys)
for i in range(miny, maxy + 1):
yc = len([y for y in ys if y == i])
yc = int(yc/5) # counts of 5 is enough
print("{:4}: {}".format(i, "+" * yc, end=""))
axs = sorted([abs(x) for x in xs])
ays = sorted([abs(y) for y in ys])
avgx = int(sum(axs)/len(axs))
avgy = int(sum(ays)/len(ays))
medx = axs[int(len(axs)/2)]
medy = ays[int(len(ays)/2)]
pc95x = axs[int(len(axs) * 0.95)]
pc95y = ays[int(len(ays) * 0.95)]
print("Average for abs deltas: x: {:3} y: {:3}".format(avgx, avgy))
print("Median for abs deltas: x: {:3} y: {:3}".format(medx, medy))
print("95% percentile for abs deltas: x: {:3} y: {:3}"
.format(pc95x, pc95y)
)
def main(args):
parser = argparse.ArgumentParser(
description="Measure the trackpoint delta coordinate range"
)
parser.add_argument('path', metavar='/dev/input/event0',
nargs='?', type=str, help='Path to device (optional)')
args = parser.parse_args()
try:
device = Device(args.path)
print(
"This tool measures the commonly used pressure range of the\n"
"trackpoint. Push the trackpoint:\n"
"- Four times around the screen edges\n"
"- From the top left to the bottom right and back, twice\n"
"- From the top right to the bottom left and back, twice\n"
"A minimum of {} events for each axis is required\n"
"\n"
"Movements should emulate fast pointer movement on the screen\n"
"but not use excessive pressure that would not be used\n"
"during day-to-day movement. For best results, run this tool \n"
"several times to get an idea of the common range.\n"
"\n".format(MINIMUM_EVENT_COUNT))
device.read_events()
except KeyboardInterrupt:
device.print_summary()
except (PermissionError, OSError):
print("Error: failed to open device. Are you running as root?")
except InvalidDeviceError as e:
print("Error: {}".format(e))
if __name__ == "__main__":
main(sys.argv)
|
