entities.py 文件源码

def get_progress(self, set=False):
        """
        Return progress (between 0 and 1 - 0 is full blue control,
        1 is full green control) and optionally set the current
        progress.
        """
        # TODO: wtf is this thing, and why are we setting values in
        # a getter. Should this be refactored into two functions
        # called `update_progress` and `get_progress` instead?
        rate = self.rate_value
        if rate == 0.0 or self.start is None:
            return self.progress
        dt = reactor.seconds() - self.start
        progress = max(0, min(1, self.progress + rate * dt))
        if set:
            self.progress = progress
        return progress