本文整理汇总了Python中vispy.util.event.EmitterGroup.start方法的典型用法代码示例。如果您正苦于以下问题：Python EmitterGroup.start方法的具体用法？Python EmitterGroup.start怎么用？Python EmitterGroup.start使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类vispy.util.event.EmitterGroup的用法示例。
在下文中一共展示了EmitterGroup.start方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: Timer
# 需要导入模块: from vispy.util.event import EmitterGroup [as 别名]
# 或者: from vispy.util.event.EmitterGroup import start [as 别名]
class Timer(object):
"""Timer used to schedule events in the future or on a repeating schedule.
"""
def __init__(self, interval=0.0, connect=None, iterations=-1, start=False, app=None):
self.events = EmitterGroup(source=self,
start=Event,
stop=Event,
timeout=Event)
#self.connect = self.events.timeout.connect
#self.disconnect = self.events.timeout.disconnect
# Get app instance and make sure that it has an associated backend
self._app = vispy.app.default_app if app is None else app
self._app.use()
# Instantiate the backed with the right class
self._backend = self._app.backend_module.TimerBackend(self)
self._interval = interval
self._running = False
self._last_emit_time = None
self.iter_count = 0
self.max_iterations = iterations
if connect is not None:
self.connect(connect)
if start:
self.start()
@property
def app(self):
""" The vispy Application instance on which this Timer is based.
"""
return self._app
@property
def interval(self):
return self._interval
@interval.setter
def interval(self, val):
self._interval = val
if self.running:
self.stop()
self.start()
@property
def running(self):
return self._running
def start(self, interval=None, iterations=None):
"""Start the timer.
A timeout event will be generated every *interval* seconds.
If *interval* is None, then self.interval will be used.
If *iterations* is specified, the timer will stop after
emitting that number of events. If unspecified, then
the previous value of self.iterations will be used. If the value is
negative, then the timer will continue running until stop() is called.
"""
self.iter_count = 0
if interval is not None:
self.interval = interval
if iterations is not None:
self.max_iterations = iterations
self._backend._vispy_start(self.interval)
self._running = True
self._last_emit_time = None
self.events.start(type='timer_start')
def stop(self):
"""Stop the timer."""
self._backend._vispy_stop()
self._running = False
self.events.stop(type='timer_stop')
# use timer.app.run() and .quit() instead.
#def run_event_loop(self):
#"""Execute the event loop for this Timer's backend.
#"""
#return self._backend._vispy_run()
#def quit_event_loop(self):
#"""Exit the event loop for this Timer's backend.
#"""
#return self._backend._vispy_quit()
@property
def native(self):
""" The native timer on which this Timer is based.
"""
return self._backend._vispy_get_native_timer()
def _timeout(self, *args):
# called when the backend timer has triggered.
if not self.running:
return
#.........这里部分代码省略.........