/usr/share/pyshared/kivy/lib/mtdev.py is in python-kivy 1.7.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 | '''
python-mtdev - Python binding to the mtdev library (MIT license)
The mtdev library transforms all variants of kernel MT events to the
slotted type B protocol. The events put into mtdev may be from any MT
device, specifically type A without contact tracking, type A with
contact tracking, or type B with contact tracking. See the kernel
documentation for further details.
'''
import os
from ctypes import cdll, Structure, c_ulong, c_int, c_ushort, \
c_void_p, pointer, POINTER, byref
# load library
libmtdev = cdll.LoadLibrary('libmtdev.so.1')
# from linux/input.h
MTDEV_CODE_SLOT = 0x2f # MT slot being modified
MTDEV_CODE_TOUCH_MAJOR = 0x30 # Major axis of touching ellipse
MTDEV_CODE_TOUCH_MINOR = 0x31 # Minor axis (omit if circular)
MTDEV_CODE_WIDTH_MAJOR = 0x32 # Major axis of approaching ellipse
MTDEV_CODE_WIDTH_MINOR = 0x33 # Minor axis (omit if circular)
MTDEV_CODE_ORIENTATION = 0x34 # Ellipse orientation
MTDEV_CODE_POSITION_X = 0x35 # Center X ellipse position
MTDEV_CODE_POSITION_Y = 0x36 # Center Y ellipse position
MTDEV_CODE_TOOL_TYPE = 0x37 # Type of touching device
MTDEV_CODE_BLOB_ID = 0x38 # Group a set of packets as a blob
MTDEV_CODE_TRACKING_ID = 0x39 # Unique ID of initiated contact
MTDEV_CODE_PRESSURE = 0x3a # Pressure on contact area
MTDEV_CODE_ABS_X = 0x00
MTDEV_CODE_ABS_Y = 0x01
MTDEV_CODE_ABS_Z = 0x02
MTDEV_CODE_BTN_DIGI = 0x140
MTDEV_CODE_BTN_TOOL_PEN = 0x140
MTDEV_CODE_BTN_TOOL_RUBBER = 0x141
MTDEV_CODE_BTN_TOOL_BRUSH = 0x142
MTDEV_CODE_BTN_TOOL_PENCIL = 0x143
MTDEV_CODE_BTN_TOOL_AIRBRUSH = 0x144
MTDEV_CODE_BTN_TOOL_FINGER = 0x145
MTDEV_CODE_BTN_TOOL_MOUSE = 0x146
MTDEV_CODE_BTN_TOOL_LENS = 0x147
MTDEV_CODE_BTN_TOUCH = 0x14a
MTDEV_CODE_BTN_STYLUS = 0x14b
MTDEV_CODE_BTN_STYLUS2 = 0x14c
MTDEV_CODE_BTN_TOOL_DOUBLETAP = 0x14d
MTDEV_CODE_BTN_TOOL_TRIPLETAP = 0x14e
MTDEV_CODE_BTN_TOOL_QUADTAP = 0x14f # Four fingers on trackpad
MTDEV_TYPE_EV_ABS = 0x03
MTDEV_TYPE_EV_SYN = 0x00
MTDEV_TYPE_EV_KEY = 0x01
MTDEV_TYPE_EV_REL = 0x02
MTDEV_TYPE_EV_ABS = 0x03
MTDEV_TYPE_EV_MSC = 0x04
MTDEV_TYPE_EV_SW = 0x05
MTDEV_TYPE_EV_LED = 0x11
MTDEV_TYPE_EV_SND = 0x12
MTDEV_TYPE_EV_REP = 0x14
MTDEV_TYPE_EV_FF = 0x15
MTDEV_TYPE_EV_PWR = 0x16
MTDEV_TYPE_EV_FF_STATUS = 0x17
MTDEV_ABS_TRACKING_ID = 9
MTDEV_ABS_POSITION_X = 5
MTDEV_ABS_POSITION_Y = 6
MTDEV_ABS_TOUCH_MAJOR = 0
MTDEV_ABS_TOUCH_MINOR = 1
MTDEV_ABS_WIDTH_MAJOR = 2
MTDEV_ABS_WIDTH_MINOR = 3
MTDEV_ABS_ORIENTATION = 4
MTDEV_ABS_SIZE = 11
class timeval(Structure):
_fields_ = [
('tv_sec', c_ulong),
('tv_usec', c_ulong)
]
class input_event(Structure):
_fields_ = [
('time', timeval),
('type', c_ushort),
('code', c_ushort),
('value', c_int)
]
class input_absinfo(Structure):
_fields_ = [
('value', c_int),
('minimum', c_int),
('maximum', c_int),
('fuzz', c_int),
('flat', c_int),
('resolution', c_int)
]
class mtdev_caps(Structure):
_fields_ = [
('has_mtdata', c_int),
('has_slot', c_int),
('has_abs', c_int * MTDEV_ABS_SIZE),
('slot', input_absinfo),
('abs', input_absinfo * MTDEV_ABS_SIZE)
]
class mtdev(Structure):
_fields_ = [
('caps', mtdev_caps),
('state', c_void_p)
]
# binding
mtdev_open = libmtdev.mtdev_open
mtdev_open.argtypes = [POINTER(mtdev), c_int]
mtdev_get = libmtdev.mtdev_get
mtdev_get.argtypes = [POINTER(mtdev), c_int, POINTER(input_event), c_int]
mtdev_idle = libmtdev.mtdev_idle
mtdev_idle.argtypes = [POINTER(mtdev), c_int, c_int]
mtdev_close = libmtdev.mtdev_close
mtdev_close.argtypes = [POINTER(mtdev)]
class Device:
def __init__(self, filename):
self._filename = filename
self._fd = -1
self._device = mtdev()
self._fd = os.open(filename, os.O_NONBLOCK | os.O_RDONLY)
ret = mtdev_open(pointer(self._device), self._fd)
if ret != 0:
os.close(self._fd)
self._fd = -1
raise Exception('Unable to open device')
def close(self):
'''Close the mtdev converter
'''
if self._fd == -1:
return
mtdev_close(POINTER(self._device))
os.close(self._fd)
self._fd = -1
def idle(self, ms):
'''Check state of kernel device
:Parameters:
`ms` : int
Number of milliseconds to wait for activity
:Return:
Return True if the device is idle, i.e, there are no fetched events
in the pipe and there is nothing to fetch from the device.
'''
if self._fd == -1:
raise Exception('Device closed')
return bool(mtdev_idle(pointer(self._device), self._fd, ms))
def get(self):
if self._fd == -1:
raise Exception('Device closed')
ev = input_event()
if mtdev_get(pointer(self._device), self._fd, byref(ev), 1) <= 0:
return None
return ev
def has_mtdata(self):
'''Return True if the device has multitouch data.
'''
if self._fd == -1:
raise Exception('Device closed')
return bool(self._device.caps.has_mtdata)
def has_slot(self):
'''Return True if the device has slot information.
'''
if self._fd == -1:
raise Exception('Device closed')
return bool(self._device.caps.has_slot)
def has_abs(self, index):
'''Return True if the device has abs data.
:Parameters:
`index` : int
One of const starting with a name ABS_MT_
'''
if self._fd == -1:
raise Exception('Device closed')
if index < 0 or index >= MTDEV_ABS_SIZE:
raise IndexError('Invalid index')
return bool(self._device.caps.has_abs[index])
def get_max_abs(self):
'''Return the maximum number of abs information available.
'''
return MTDEV_ABS_SIZE
def get_slot(self):
'''Return the slot data.
'''
if self._fd == -1:
raise Exception('Device closed')
if self._device.caps.has_slot == 0:
return
return self._device.caps.slot
def get_abs(self, index):
'''Return the abs data.
:Parameters:
`index` : int
One of const starting with a name ABS_MT_
'''
if self._fd == -1:
raise Exception('Device closed')
if index < 0 or index >= MTDEV_ABS_SIZE:
raise IndexError('Invalid index')
return self._device.caps.abs[index]
|