class Camera(object):
clear_after = False
_tref = None
shutter_signal = Signal(providing_args=('state', ))
def __init__(self, state, config):
self.state = state
self.timer = Timer()
self.freq = config['camera']['frequency']
def install(self):
self._tref = self.timer.call_repeatedly(self.freq, self.capture)
def on_shutter(self, monitor):
pass
def after_shutter(self):
pass
def capture(self):
self.state.freeze_while(self.shutter, clear_after=self.clear_after)
self.after_shutter()
def shutter(self):
self.shutter_signal.send(self.state)
self.on_shutter(self.state)
def cancel(self):
if self._tref:
self._tref() # flush all received events.
self._tref.cancel()
def __enter__(self):
self.install()
return self
def __exit__(self, *exc_info):
self.cancel()
return True
class Camera(object):
clear_after = False
_tref = None
shutter_signal = Signal(providing_args=('state', ))
def __init__(self, state, config):
self.state = state
self.timer = Timer()
self.freq = config.getfloat('camera', 'frequency')
def install(self):
self._tref = self.timer.call_repeatedly(self.freq, self.capture)
def on_shutter(self, monitor):
pass
def after_shutter(self):
pass
def capture(self):
self.state.freeze_while(self.shutter, clear_after=self.clear_after)
self.after_shutter()
def shutter(self):
self.shutter_signal.send(self.state)
self.on_shutter(self.state)
def cancel(self):
if self._tref:
self._tref() # flush all received events.
self._tref.cancel()
def __enter__(self):
self.install()
return self
def __exit__(self, *exc_info):
self.cancel()
return True
