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LinVAM/keyboard/_nixmouse.py
2019-04-08 22:20:07 +08:00

131 lines
3.4 KiB
Python

# -*- coding: utf-8 -*-
import struct
from subprocess import check_output
import re
from ._nixcommon import EV_KEY, EV_REL, EV_MSC, EV_SYN, EV_ABS, aggregate_devices, ensure_root
from ._mouse_event import ButtonEvent, WheelEvent, MoveEvent, LEFT, RIGHT, MIDDLE, X, X2, UP, DOWN
import ctypes
import ctypes.util
from ctypes import c_uint32, c_uint, c_int, byref
display = None
window = None
x11 = None
def build_display():
global display, window, x11
if display and window and x11: return
x11 = ctypes.cdll.LoadLibrary(ctypes.util.find_library('X11'))
# Required because we will have multiple threads calling x11,
# such as the listener thread and then main using "move_to".
x11.XInitThreads()
display = x11.XOpenDisplay(None)
# Known to cause segfault in Fedora 23 64bits, no known workarounds.
# http://stackoverflow.com/questions/35137007/get-mouse-position-on-linux-pure-python
window = x11.XDefaultRootWindow(display)
def get_position():
build_display()
root_id, child_id = c_uint32(), c_uint32()
root_x, root_y, win_x, win_y = c_int(), c_int(), c_int(), c_int()
mask = c_uint()
ret = x11.XQueryPointer(display, c_uint32(window), byref(root_id), byref(child_id),
byref(root_x), byref(root_y),
byref(win_x), byref(win_y), byref(mask))
return root_x.value, root_y.value
def move_to(x, y):
build_display()
x11.XWarpPointer(display, None, window, 0, 0, 0, 0, x, y)
x11.XFlush(display)
REL_X = 0x00
REL_Y = 0x01
REL_Z = 0x02
REL_HWHEEL = 0x06
REL_WHEEL = 0x08
ABS_X = 0x00
ABS_Y = 0x01
BTN_MOUSE = 0x110
BTN_LEFT = 0x110
BTN_RIGHT = 0x111
BTN_MIDDLE = 0x112
BTN_SIDE = 0x113
BTN_EXTRA = 0x114
button_by_code = {
BTN_LEFT: LEFT,
BTN_RIGHT: RIGHT,
BTN_MIDDLE: MIDDLE,
BTN_SIDE: X,
BTN_EXTRA: X2,
}
code_by_button = {button: code for code, button in button_by_code.items()}
device = None
def build_device():
global device
if device: return
ensure_root()
device = aggregate_devices('mouse')
init = build_device
def listen(queue):
build_device()
while True:
time, type, code, value, device_id = device.read_event()
if type == EV_SYN or type == EV_MSC:
continue
event = None
arg = None
if type == EV_KEY:
event = ButtonEvent(DOWN if value else UP, button_by_code.get(code, '?'), time)
elif type == EV_REL:
value, = struct.unpack('i', struct.pack('I', value))
if code == REL_WHEEL:
event = WheelEvent(value, time)
elif code in (REL_X, REL_Y):
x, y = get_position()
event = MoveEvent(x, y, time)
if event is None:
# Unknown event type.
continue
queue.put(event)
def press(button=LEFT):
build_device()
device.write_event(EV_KEY, code_by_button[button], 0x01)
def release(button=LEFT):
build_device()
device.write_event(EV_KEY, code_by_button[button], 0x00)
def move_relative(x, y):
build_device()
# Note relative events are not in terms of pixels, but millimeters.
if x < 0:
x += 2**32
if y < 0:
y += 2**32
device.write_event(EV_REL, REL_X, x)
device.write_event(EV_REL, REL_Y, y)
def wheel(delta=1):
build_device()
if delta < 0:
delta += 2**32
device.write_event(EV_REL, REL_WHEEL, delta)
if __name__ == '__main__':
#listen(print)
move_to(100, 200)