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34 lines
765 B
Python
34 lines
765 B
Python
import gobject
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class Timeline(gobject.GObject):
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__gsignals__ = {
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'next-frame': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE, ([int])),
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'completed': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE, ([]))
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}
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def __init__(self, stage, n_frames):
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gobject.GObject.__init__(self)
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self._stage = stage
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self._fps = stage.get_fps()
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self._n_frames = n_frames
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self._current_frame = 0
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def start(self):
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gobject.timeout_add(1000 / self._fps, self.__timeout_cb)
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def get_n_frames(self):
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return self._n_frames
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def __timeout_cb(self):
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self.emit('next-frame', self._current_frame)
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# FIXME skip frames if necessary
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self._current_frame += 1
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if self._current_frame < self._n_frames:
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return True
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else:
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self.emit('completed')
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return False
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