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69 lines
2.0 KiB
Python
69 lines
2.0 KiB
Python
#!/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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"""Create some singleton objects that are needed for the app to work."""
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import stat
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import re
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import subprocess
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import evdev
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from keymapper.mapping import Mapping
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# offset between xkb and linux keycodes. linux keycodes are lower
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KEYCODE_OFFSET = 8
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def populate_system_mapping():
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"""Get a mapping of all available names to their keycodes."""
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mapping = {}
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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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for keycode, names in mappings:
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for name in names.split():
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mapping[name] = int(keycode)
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for name, ecode in evdev.ecodes.ecodes.items():
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mapping[name] = ecode + KEYCODE_OFFSET
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return mapping
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def clear_system_mapping():
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"""Remove all mapped keys. Only needed for tests."""
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keys = list(system_mapping.keys())
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for key in keys:
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del system_mapping[key]
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# one mapping object for the whole application that holds all
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# customizations, as shown in the UI
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custom_mapping = Mapping()
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# this mapping represents the xmodmap output, which stays constant
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system_mapping = populate_system_mapping()
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# permissions for files created in /usr
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_PERMISSIONS = stat.S_IREAD | stat.S_IWRITE | stat.S_IRGRP | stat.S_IROTH
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