8000 Connect the Animation event source callback in the constructor. by anntzer · Pull Request #26774 · matplotlib/matplotlib · GitHub
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Connect the Animation event source callback in the constructor. #26774

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merged 1 commit into from
Mar 11, 2025
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Connect the Animation event source callback in the constructor. #26774

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7 changes: 2 additions & 5 deletions lib/matplotlib/animation.py
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Original file line number Diff line number Diff line change
Expand Up @@ -891,6 +891,7 @@ def __init__(self, fig, event_source=None, blit=False):
# that cause the frame sequence to be iterated.
self.frame_seq = self.new_frame_seq()
self.event_source = event_source
self.event_source.add_callback(self._step)

# Instead of starting the event source now, we connect to the figure's
# draw_event, so that we only start once the figure has been drawn.
Expand Down Expand Up @@ -923,13 +924,9 @@ def _start(self, *args):
return
# First disconnect our draw event handler
self._fig.canvas.mpl_disconnect(self._first_draw_id)

# Now do any initial draw
self._init_draw()

# Add our callback for stepping the animation and
# actually start the event_source.
self.event_source.add_callback(self._step)
# Actually start the event_source.
self.event_source.start()

def _stop(self, *args):
Expand Down
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