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rules: try uinput for simulating input if Xtest not available

This commit is contained in:
Peter F. Patel-Schneider 2022-02-23 20:52:11 -05:00
parent b9c17474a4
commit 6bddebd89b
1 changed files with 70 additions and 54 deletions
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122
lib/logitech_receiver/diversion.py
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@ -25,8 +25,8 @@ from logging import INFO as _INFO
from logging import getLogger
from math import sqrt as _sqrt
import keysyms.keysymdef as _keysymdef
import evdev
import keysyms.keysymdef as _keysymdef
import psutil
from gi.repository import Gdk, GLib
@ -52,16 +52,15 @@ del getLogger
# Process condition depends on X11 from python-xlib, and is probably not possible at all in Wayland
# MouseProcess condition depends on X11 from python-xlib, and is probably not possible at all in Wayland
# Modifiers condition depends only on GDK
# KeyPress action currently only works in X11, and is not currently available under Wayland FIXME
# KeyPress action determines whether a keysym is a currently-down modifier using get_modifier_mapping from python-xlib;
# under Wayland no modifier keys are considered down so all modifier keys are pressed, potentially leading to problems
# KeyPress action translates key names to keysysms using the local file described for GUI keyname determination
# KeyPress action gets the current keyboard group using XkbGetState from libX11.so using ctypes definitions
# under Wayland the keyboard group is None resulting in using the first keyboard group
# KeyPress action translates keysyms to keycodes using the GDK keymap
# KeyPress action simulates keyboard input with X11 XTest from python-xlib
# MouseScroll and MouseClick actions currently only work in X11, and are not currently available under Wayland
# MouseScroll and MouseClick actions simulate mouse input with X11 XTest from python-xlib
# KeyPress, MouseScroll, and MouseClick actions use XTest (under X11) or uinput.
# For uinput to work the user must have write access for /dev/uinput.
# To get this access run sudo setfacl -m u:${user}:rw /dev/uinput
#
# Rule GUI keyname determination uses a local file generated
# from http://cgit.freedesktop.org/xorg/proto/x11proto/plain/keysymdef.h
@ -193,11 +192,6 @@ MOUSE_GESTURE_TESTS = {
COMPONENTS = {}
if x11:
displayt = Display()
else:
displayt = None
class RuleComponent:
def compile(self, c):
@ -638,6 +632,64 @@ class MouseGesture(Condition):
return {'MouseGesture': [str(m) for m in self.movements]}
buttons = {
'unknown': (None, None),
'left': (1, evdev.ecodes.ecodes['BTN_LEFT']),
'middle': (2, evdev.ecodes.ecodes['BTN_MIDDLE']),
'right': (3, evdev.ecodes.ecodes['BTN_RIGHT']),
'scroll_up': (4, evdev.ecodes.ecodes['BTN_4']),
'scroll_down': (5, evdev.ecodes.ecodes['BTN_5']),
'scroll_left': (6, evdev.ecodes.ecodes['BTN_6']),
'scroll_right': (7, evdev.ecodes.ecodes['BTN_7']),
'button8': (8, evdev.ecodes.ecodes['BTN_8']),
'button9': (9, evdev.ecodes.ecodes['BTN_9']),
}
mousecap = {evdev.ecodes.EV_KEY: [evcode for (_, evcode) in buttons.values() if evcode]}
if x11:
displayt = Display()
else:
displayt = None
try:
ukeyboard = evdev.uinput.UInput()
umouse = evdev.uinput.UInput(mousecap)
except Exception as e:
if not x11:
_log.warn('cannot create uinput device: %s', e)
else:
_log.info('cannot create uinput device: %s', e)
ukeyboard = None
umouse = None
def simulate_input(code, event): # X11 keycode/buttoncode and event
global displayt, ukeyboard, umouse
if isinstance(code, int): # evdev keycode is 8 less than X11 keycodes
code = (code, code - 8)
if displayt:
try:
if code[0]:
Xlib.ext.xtest.fake_input(displayt, event, code[0])
displayt.sync()
return True
except Exception as e:
displayt = None
_log.warn('xtest fake input failed: %s', e)
if ukeyboard:
direction = 1 if event == Xlib.X.KeyPress or event == Xlib.X.ButtonPress else 0
device = ukeyboard if event == Xlib.X.KeyPress or event == Xlib.X.KeyRelease else umouse
try:
if code[1]:
device.write(evdev.ecodes.EV_KEY, code[1], direction)
device.syn()
return True
except Exception as e:
ukeyboard = umouse = None
_log.warn('uinput write failed: %s', e)
_log.warn('no way to simulate input')
class Action(RuleComponent):
def __init__(self, *args):
pass
@ -646,10 +698,6 @@ class Action(RuleComponent):
return None
dinput = evdev.uinput.UInput()
ddevice = dinput.device
class KeyPress(Action):
def __init__(self, keys):
if isinstance(keys, str):
@ -659,9 +707,6 @@ class KeyPress(Action):
if not all(self.key_symbols):
_log.warn('rule KeyPress not sequence of key names %s', keys)
self.key_symbols = []
if not x11:
_log.warn('rule KeyPress action only available in X11 %s', keys)
self.key_symbols = []
def keysym_to_keycode(self, keysym, modifiers): # maybe should take shift into account
group = kbdgroup() or 0
@ -685,26 +730,21 @@ class KeyPress(Action):
def keyDown(self, keysyms, modifiers):
for k in keysyms:
keycode = self.keysym_to_keycode(k, modifiers)
if self.needed(keycode, modifiers) and x11 and keycode:
# Xlib.ext.xtest.fake_input(displayt, X.KeyPress, keycode)
ddevice.write(evdev.ecodes.EV_KEY, keycode - 8, 1) # X adds 8 to keycodes
if keycode and self.needed(keycode, modifiers):
simulate_input(keycode, Xlib.X.KeyPress)
def keyUp(self, keysyms, modifiers):
for k in keysyms:
keycode = self.keysym_to_keycode(k, modifiers)
if self.needed(keycode, modifiers) and x11 and keycode:
# Xlib.ext.xtest.fake_input(displayt, X.KeyRelease, keycode)
ddevice.write(evdev.ecodes.EV_KEY, keycode - 8, 0) # X adds 8 to keycodes
if keycode and self.needed(keycode, modifiers):
simulate_input(keycode, Xlib.X.KeyRelease)
def evaluate(self, feature, notification, device, status, last_result):
current = gkeymap.get_modifier_state()
if _log.isEnabledFor(_INFO):
_log.info('KeyPress action: %s, modifiers %s %s', self.key_symbols, current, [hex(k) for k in self.key_symbols])
_log.info('KeyPress action: %s, modifiers %s %s', self.key_names, current, [hex(k) for k in self.key_symbols])
self.keyDown(self.key_symbols, current)
self.keyUp(reversed(self.key_symbols), current)
if x11:
# displayt.sync()
dinput.syn()
return None
def data(self):
@ -719,27 +759,11 @@ class KeyPress(Action):
# def evaluate(self, feature, notification, device, status, last_result):
# super().keyUp(self.keys, current_key_modifiers)
buttons = {
'unknown': None,
'left': 1,
'middle': 2,
'right': 3,
'scroll_up': 4,
'scroll_down': 5,
'scroll_left': 6,
'scroll_right': 7
}
for i in range(8, 31):
buttons['button%d' % i] = i
def click(button, count):
if x11:
for _ in range(count):
Xlib.ext.xtest.fake_input(displayt, Xlib.X.ButtonPress, button)
Xlib.ext.xtest.fake_input(displayt, Xlib.X.ButtonRelease, button)
else:
_log.warn('X11 not available - rules cannot simulate mouse clicks')
simulate_input(button, Xlib.X.ButtonPress)
simulate_input(button, Xlib.X.ButtonRelease)
class MouseScroll(Action):
@ -751,8 +775,6 @@ class MouseScroll(Action):
_log.warn('rule MouseScroll argument not two numbers %s', amounts)
amounts = [0, 0]
self.amounts = amounts
if not x11:
_log.warn('X11 not available - rules cannot simulate mouse scrolling - %s', self)
def __str__(self):
return 'MouseScroll: ' + ' '.join([str(a) for a in self.amounts])
@ -770,8 +792,6 @@ class MouseScroll(Action):
click(button=buttons['scroll_right'] if dx > 0 else buttons['scroll_left'], count=abs(dx))
if dy:
click(button=buttons['scroll_up'] if dy > 0 else buttons['scroll_down'], count=abs(dy))
if x11:
displayt.sync()
return None
def data(self):
@ -794,8 +814,6 @@ class MouseClick(Action):
except (ValueError, TypeError):
_log.warn('rule MouseClick action: count %s should be an integer', count)
self.count = 1
if not x11:
_log.warn('X11 not available - rules cannot simulate mouse clicks - %s', self)
def __str__(self):
return 'MouseClick: %s (%d)' % (self.button, self.count)
@ -805,8 +823,6 @@ class MouseClick(Action):
_log.info('MouseClick action: %d %s' % (self.count, self.button))
if self.button and self.count:
click(buttons[self.button], self.count)
if x11:
displayt.sync()
return None
def data(self):