pyTermTk/TermTk/TTkCore/timer.py

#!/usr/bin/env python3

# MIT License
#
# Copyright (c) 2021 Eugenio Parodi <ceccopierangiolieugenio AT googlemail DOT com>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

import threading, time
import importlib

from TermTk.TTkCore.signal import pyTTkSlot, pyTTkSignal


if importlib.util.find_spec('pyodideProxy'):
    import pyodideProxy
    class TTkTimer():
        _timers = {}
        _uid = 0

        __slots__ = (
            '_id', '_running',
            'timeout', '_timerEvent',
            '_delay', '_delayLock', '_quit',
            '_stopTime')

        def __init__(self):
            # Define Signals
            self.timeout = pyTTkSignal()
            self._running = True

            self._id = TTkTimer._uid
            TTkTimer._uid +=1
            TTkTimer._timers[self._id] = self

        @staticmethod
        def triggerTimerId(tid):
            if tid in TTkTimer._timers:
                TTkTimer._timers[tid].timeout.emit()

        @staticmethod
        def quitAll():
            pass

        @staticmethod
        def pyodideQuit():
            for timer in TTkTimer._timers:
                TTkTimer._timers[timer].timeout.clearAll()
                TTkTimer._timers[timer]._running = False
                TTkTimer._timers[timer].quit()
            TTkTimer._timers = {}

        def quit(self):
            pass

        def run(self):
            pass

        @pyTTkSlot(int)
        def start(self, sec=0):
            if self._running:
                pyodideProxy.setTimeout(int(sec*1000), self._id)

        @pyTTkSlot()
        def stop(self):
            pass
else:
    # from .log import TTkLog
    class TTkTimer():
        _timers = []
        __slots__ = ('timeout', '_timer')
        def __init__(self):
            # Define Signals
            self.timeout = pyTTkSignal()
            self._timer = None
            TTkTimer._timers.append(self)

        @staticmethod
        def quitAll():
            for timer in TTkTimer._timers:
                timer.quit()

        def quit(self):
            if self._timer:
                self._timer.cancel()

        @pyTTkSlot(int)
        def start(self, sec=0):
            if self._timer:
                self._timer.cancel()
            self._timer = threading.Timer(sec, self.timeout.emit)
            self._timer.start()

        @pyTTkSlot()
        def stop(self):
            if self._timer:
                self._timer.cancel()

#    class TTkTimer(threading.Thread):
#        _timers = []
#        __slots__ = (
#            'timeout', '_timerEvent',
#            '_delay', '_delayLock', '_quit',
#            '_stopTime')
#        def __init__(self):
#            # Define Signals
#            self.timeout = pyTTkSignal()
#
#            self._timerEvent = threading.Event()
#            self._quit = threading.Event()
#            self._stopTime = 0
#            self._delay=0
#            self._delayLock = threading.Lock()
#            threading.Thread.__init__(self)
#            TTkTimer._timers.append(self)
#            threading.Thread.start(self)
#
#        @staticmethod
#        def quitAll():
#            for timer in TTkTimer._timers:
#                timer.quit()
#
#        def quit(self):
#            self._quit.set()
#            self._delay=1
#            self._timerEvent.set()
#
#        def run(self):
#            while self._timerEvent.wait():
#                self._timerEvent.clear()
#                self._delayLock.acquire()
#                if not self._delay:
#                    self._delayLock.release()
#                    continue
#                while self._delay > 0:
#                    self._delayLock.acquire()
#                    delay = self._delay
#                    self._delay = 0
#                    self._delayLock.release()
#                    if self._quit.wait(delay):
#                        return
#                self.timeout.emit()
#
#        @pyTTkSlot(int)
#        def start(self, sec=0):
#            self._lastTime = time.time()
#            self._delayLock.acquire()
#            self._delay = sec
#            self._delayLock.release()
#            self._timerEvent.set()
#
#        @pyTTkSlot()
#        def stop(self):
#            # TODO: Timer.stop()
#            self._stopTime = time.time()
#