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""" |
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* PyDMXControl: A Python 3 module to control DMX using uDMX. |
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* Featuring fixture profiles, built-in effects and a web control panel. |
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* <https://github.com/MattIPv4/PyDMXControl/> |
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* Copyright (C) 2021 Matt Cowley (MattIPv4) ([email protected]) |
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""" |
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from threading import Thread |
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from time import sleep, time |
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from typing import Callable |
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from ... import DMXMINWAIT |
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class Ticker: |
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@staticmethod |
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def millis_now() -> float: |
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return time() * 1000.0 |
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def __init__(self): |
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self.__callbacks = [] |
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self.__paused = False |
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self.__ticking = False |
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self.thread = None |
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def __ticker(self): |
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# Loop over each callback |
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for callback in self.__callbacks: |
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# New |
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if callback["last"] is None: |
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callback["last"] = self.millis_now() |
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# If diff in milliseconds is interval |
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if self.millis_now() - callback["last"] >= callback["interval"]: |
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# Check is valid callback |
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if callback["callback"] and callable(callback["callback"]): |
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callback["callback"]() |
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# Finished, update last tick time |
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callback["last"] = self.millis_now() |
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def __ticker__loop(self): |
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# Reset |
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for callback in self.__callbacks: |
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callback["last"] = None |
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self.__paused = False |
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# Use a variable so loop can be stopped |
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self.__ticking = True |
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while self.__ticking: |
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# Allow for pausing |
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if not self.__paused: |
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# Call ticker |
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self.__ticker() |
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# Sleep DMX delay time |
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sleep(DMXMINWAIT) |
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def add_callback(self, callback: Callable, interval_millis: float = 1000.0): |
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self.__callbacks.append({ |
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"callback": callback, |
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"interval": interval_millis, |
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"last": None |
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}) |
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def remove_callback(self, callback: Callable): |
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idx = [i for i, cb in enumerate(self.__callbacks) if cb["callback"] == callback] |
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if len(idx): |
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del self.__callbacks[idx[0]] |
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def clear_callbacks(self): |
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self.__callbacks = [] |
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def stop(self): |
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# Stop the threaded loop |
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self.__ticking = False |
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@property |
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def paused(self) -> bool: |
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return self.__paused |
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def pause(self) -> bool: |
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# Toggle pause state |
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self.__paused = not self.__paused |
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return self.paused |
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def start(self): |
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if not self.__ticking: |
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# Create the thread and run loop |
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self.thread = Thread(target=self.__ticker__loop) |
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self.thread.daemon = True |
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self.thread.start() |
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MattIPv4 /
PyDMXControl
