55 lines
1.8 KiB
Python
55 lines
1.8 KiB
Python
# Copyright (C) 2022 RozK
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero 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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# This program 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 Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from engine import (
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buffer,
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EVENT_FOCUS_IN, EVENT_FOCUS_OUT,
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EVENT_KEY_PRESS, EVENT_KEY_RELEASE,
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EVENT_BUTTON_PRESS, EVENT_BUTTON_RELEASE,
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EVENT_MOTION,
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Event, create_events, destroy_events, consume_events)
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_max_type = max(
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EVENT_FOCUS_IN, EVENT_FOCUS_OUT,
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EVENT_KEY_PRESS, EVENT_KEY_RELEASE,
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EVENT_BUTTON_PRESS, EVENT_BUTTON_RELEASE,
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EVENT_MOTION)
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_max_events = 64
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class Events:
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__slots__ = '_display', '_events', '_buffer', '_handlers'
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def __init__(self, display):
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self._display = display
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self._events = create_events(display)
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self._buffer = buffer(Event, _max_events)
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self._handlers = [[] for _ in range(_max_type + 1)]
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def __del__(self):
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destroy_events(self._display, self._events)
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def register(self, type, handler):
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assert type <= _max_type
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self._handlers[type].append(handler)
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def update(self):
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nevents = consume_events(self._events, self._buffer, _max_events)
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if nevents:
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for event in self._buffer[:nevents]:
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data = event.data
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for handler in self._handlers[event.type]:
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handler(data)
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