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51 lines
1.5 KiB
Python
51 lines
1.5 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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"""Utility functions for all other modules in keymapper.dev"""
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import evdev
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from evdev.ecodes import EV_ABS
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def max_abs(device):
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"""Figure out the maximum value of EV_ABS events of that device.
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Like joystick movements or triggers.
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"""
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# since input_device.absinfo(EV_ABS).max is too new for (some?) ubuntus,
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# figure out the max value via the capabilities
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capabilities = device.capabilities(absinfo=True)
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if EV_ABS not in capabilities:
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return None
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absinfos = [
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entry[1] for entry in
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capabilities[EV_ABS]
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if isinstance(entry, tuple) and isinstance(entry[1], evdev.AbsInfo)
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]
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if len(absinfos) == 0:
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return None
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return absinfos[0].max
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