overthrowing the functionality completely
sezanzeb
4 years ago
parent
9bf255c42b
commit
151a1f3173
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#!/usr/bin/python3
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# -*- coding: utf-8 -*-
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# key-mapper - GUI for device specific keyboard mappings
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# Copyright (C) 2020 sezanzeb <proxima@hip70890b.de>
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#
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# This file is part of key-mapper.
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#
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# key-mapper is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# key-mapper is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with key-mapper. If not, see <https://www.gnu.org/licenses/>.
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"""Parsing and running CLI tools."""
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import os
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import re
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import subprocess
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from keymapper.paths import X11_SYMBOLS
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from keymapper.logger import logger, is_debug
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from keymapper.getdevices import get_devices
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from keymapper.mapping import system_mapping
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def get_system_layout_locale():
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"""Get the system wide configured default keyboard layout locale."""
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localectl = subprocess.check_output(
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['localectl', 'status']
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).decode().split('\n')
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# example:
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# System Locale: LANG=en_GB.UTF-8
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# VC Keymap: tmp
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# X11 Layout: de
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# X11 Model: pc105
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return [
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line for line in localectl
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if 'X11 Layout' in line
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][0].split(': ')[-1]
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def setxkbmap(device, layout):
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"""Apply a preset to the device.
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Parameters
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----------
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device : string
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layout : string or None
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For example 'de', passed to setxkbmap unmodified. If None, will
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load the system default
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"""
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if layout is not None:
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path = os.path.join(X11_SYMBOLS, layout)
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if not os.path.exists(path):
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logger.error('Symbols %s don\'t exist', path)
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return
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with open(path, 'r') as f:
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if f.read() == '':
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logger.error('Tried to load empty symbols %s', path)
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return
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logger.info('Applying layout "%s" on device %s', layout, device)
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group = get_devices()[device]
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if layout is None:
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cmd = ['setxkbmap', '-layout', get_system_layout_locale()]
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else:
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cmd = ['setxkbmap', '-layout', layout, '-keycodes', 'key-mapper']
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# apply it to every device that hangs on the same usb port, because I
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# have no idea how to figure out which one of those 3 devices that are
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# all named after my mouse to use.
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for xinput_name, xinput_id in get_xinput_id_mapping():
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if xinput_name not in group['devices']:
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# only all virtual devices of the same hardware device
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continue
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device_cmd = cmd + ['-device', str(xinput_id)]
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logger.debug('Running `%s`', ' '.join(device_cmd))
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subprocess.run(device_cmd, capture_output=(not is_debug()))
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def apply_empty_symbols(device):
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"""Make the device not write any character anymore."""
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logger.debug('Applying the empty symbols to %s', device)
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group = get_devices()[device]
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cmd = ['setxkbmap', '-layout', 'key-mapper/empty']
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# apply it to every device that hangs on the same usb port, because I
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# have no idea how to figure out which one of those 3 devices that are
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# all named after my mouse to use.
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for xinput_name, xinput_id in get_xinput_id_mapping():
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if xinput_name not in group['devices']:
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# only all virtual devices of the same hardware device
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continue
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device_cmd = cmd + ['-device', str(xinput_id)]
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logger.debug('Running `%s`', ' '.join(device_cmd))
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subprocess.run(device_cmd, capture_output=(not is_debug()))
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def get_xinput_id_mapping():
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"""Run xinput and get a list of name, id tuplies.
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The ids are needed for setxkbmap. There might be duplicate names with
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different ids.
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"""
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names = subprocess.check_output(
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['xinput', 'list', '--name-only']
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).decode().split('\n')
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ids = subprocess.check_output(
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['xinput', 'list', '--id-only']
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).decode().split('\n')
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names = [name for name in names if name != '']
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ids = [int(id) for id in ids if id != '']
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return zip(names, ids)
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def parse_xmodmap():
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"""Read the output of xmodmap as a Mapping object."""
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xmodmap = subprocess.check_output(['xmodmap', '-pke']).decode() + '\n'
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mappings = re.findall(r'(\d+) = (.+)\n', xmodmap)
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# TODO is this tested?
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for keycode, characters in mappings:
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system_mapping.change(
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previous_keycode=None,
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new_keycode=int(keycode),
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character=characters.split()
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)
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# TODO verify that this is the system default and not changed when I
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# setxkbmap my mouse
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parse_xmodmap()
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@ -0,0 +1,106 @@
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#!/usr/bin/python3
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# -*- coding: utf-8 -*-
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# key-mapper - GUI for device specific keyboard mappings
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# Copyright (C) 2020 sezanzeb <proxima@hip70890b.de>
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#
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# This file is part of key-mapper.
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#
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# key-mapper is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# key-mapper is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with key-mapper. If not, see <https://www.gnu.org/licenses/>.
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"""Device and evdev stuff that is independent from the display server."""
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import multiprocessing
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import evdev
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from keymapper.logger import logger
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_devices = None
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class GetDevicesProcess(multiprocessing.Process):
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"""Process to get the devices that can be worked with.
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Since InputDevice destructors take quite some time, do this
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asynchronously so that they can take as much time as they want without
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slowing down the initialization. To avoid evdevs asyncio stuff spamming
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errors, do this with multiprocessing and not multithreading.
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TODO to threading, make eventloop
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"""
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def __init__(self, pipe):
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"""Construct the process.
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Parameters
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----------
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pipe : multiprocessing.Pipe
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used to communicate the result
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"""
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self.pipe = pipe
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super().__init__()
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def run(self):
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"""Do what get_devices describes."""
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devices = [evdev.InputDevice(path) for path in evdev.list_devices()]
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# group them together by usb device because there could be stuff like
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# "Logitech USB Keyboard" and "Logitech USB Keyboard Consumer Control"
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grouped = {}
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for device in devices:
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# only keyboard devices
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# https://www.kernel.org/doc/html/latest/input/event-codes.html
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if evdev.ecodes.EV_KEY not in device.capabilities().keys():
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continue
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usb = device.phys.split('/')[0]
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if grouped.get(usb) is None:
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grouped[usb] = []
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grouped[usb].append((device.name, device.path))
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# now write down all the paths of that group
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result = {}
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for group in grouped.values():
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names = [entry[0] for entry in group]
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devs = [entry[1] for entry in group]
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shortest_name = sorted(names, key=len)[0]
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result[shortest_name] = {
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'paths': devs,
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'devices': names
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}
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self.pipe.send(result)
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def get_devices():
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"""Group devices and get relevant infos per group.
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Returns a list containing mappings of
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{group_name: {paths: [paths], devices: [names]} for input devices.
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For example, group_name could be "Logitech USB Keyboard", devices might
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contain "Logitech USB Keyboard System Control" and "Logitech USB Keyboard".
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paths is a list of files in /dev/input that belong to the devices.
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They are grouped by usb port.
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"""
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global _devices
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if _devices is None:
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pipe = multiprocessing.Pipe()
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GetDevicesProcess(pipe[1]).start()
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# block until devices are available
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_devices = pipe[0].recv()
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logger.info('Found %s', ', '.join([f'"{name}"' for name in _devices]))
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return _devices
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