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# -*- coding: utf-8 -*-
#
# Copyright (C) 2011 Tiger Soldier
#
# This file is part of OSD Lyrics.
#
# OSD Lyrics is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# OSD Lyrics is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with OSD Lyrics. If not, see <https://www.gnu.org/licenses/>.
#
from datetime import datetime
class Timer:
""" A timer to account the elapsed playing.
"""
def __init__(self, accuracy=0):
"""
Arguments:
- `accuracy`:The accuracy of the time provided by players.
If the difference between the time provided by players and the time of
the timer is greater than accuracy, the time of the timer will be adjust to
the time of the player.
"""
self._accuracy = accuracy
self._started = False
self._time = 0
self._begintime = None
def play(self):
"""
Starts the timer
"""
if not self._started:
self._started = True
self._begintime = datetime.now()
def pause(self):
"""
Stops the timer
"""
self._time = self.time
self._begintime = None
self._started = False
def stop(self):
"""
Stops the timer and sets the elapsed time to 0
"""
self.pause()
self._time = 0
@property
def time(self):
now = datetime.now()
if self._started:
return self._time + int((now - self._begintime).total_seconds() * 1000)
else:
return self._time
@time.setter
def time(self, value):
self.set_time(value)
def set_time(self, value):
"""
Adjust the time.
If the time needs to be adjusted, return True.
"""
time = self.time
if abs(time - value) > self._accuracy:
self._time = value
self._begintime = datetime.now()
return True
return False
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