def _reconnect_matplotlib_keys(self):
"""
Reconnect the previously disconnected matplotlib keys
"""
if self.figure is not None and hasattr(self,'_mpl_key_callbacks'):
self.figure.canvas.callbacks.callbacks['key_press_event'].update(self._mpl_key_callbacks)
elif self.figure is not None:
mpl_keypress_handler = self.figure.canvas.manager.key_press_handler_id
bmp = BoundMethodProxy(self.figure.canvas.manager.key_press)
self.figure.canvas.callbacks.callbacks['key_press_event'].update({mpl_keypress_handler:
bmp})
def _disconnect_matplotlib_keys(self):
"""
Disconnected the matplotlib key-press callbacks
"""
if self.figure is not None:
cbs = self.figure.canvas.callbacks.callbacks
# this may cause problems since the dict of key press events is a
# dict, i.e. not ordered, and we want to pop the first one...
mpl_keypress_handler = self.figure.canvas.manager.key_press_handler_id
try:
self._mpl_key_callbacks = {mpl_keypress_handler:
cbs['key_press_event'].pop(mpl_keypress_handler)}
except KeyError:
bmp = BoundMethodProxy(self.figure.canvas.manager.key_press)
self._mpl_key_callbacks = {mpl_keypress_handler:
bmp}