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90 lines
2.3 KiB
Python
90 lines
2.3 KiB
Python
#!/usr/bin/python3
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# -*- coding: utf-8 -*-
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# input-remapper - GUI for device specific keyboard mappings
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# Copyright (C) 2022 sezanzeb <proxima@sezanzeb.de>
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#
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# This file is part of input-remapper.
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#
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# input-remapper 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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# input-remapper 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 input-remapper. If not, see <https://www.gnu.org/licenses/>.
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import time
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from gi.repository import Gtk, GLib
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# status ctx ids
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CTX_SAVE = 0
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CTX_APPLY = 1
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CTX_KEYCODE = 2
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CTX_ERROR = 3
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CTX_WARNING = 4
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CTX_MAPPING = 5
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debounces = {}
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def debounce(timeout):
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"""Debounce a function call to improve performance.
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Calling this creates the decorator, so use something like
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@debounce(50)
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def foo():
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...
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"""
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def decorator(func):
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def clear_debounce(self, *args):
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debounces[func.__name__] = None
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return func(self, *args)
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def wrapped(self, *args):
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if debounces.get(func.__name__) is not None:
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GLib.source_remove(debounces[func.__name__])
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debounces[func.__name__] = GLib.timeout_add(
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timeout, lambda: clear_debounce(self, *args)
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)
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return wrapped
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return decorator
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class HandlerDisabled:
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"""Safely modify a widget without causing handlers to be called.
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Use in a with statement.
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"""
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def __init__(self, widget, handler):
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self.widget = widget
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self.handler = handler
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def __enter__(self):
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self.widget.handler_block_by_func(self.handler)
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def __exit__(self, *_):
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self.widget.handler_unblock_by_func(self.handler)
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def gtk_iteration(iterations=0):
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"""Iterate while events are pending."""
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while Gtk.events_pending():
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Gtk.main_iteration()
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for _ in range(iterations):
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time.sleep(0.002)
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while Gtk.events_pending():
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Gtk.main_iteration()
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