def _set_key(self, entry, icon_pos, event):
""" Generate current permutation from the key entry box.
Args:
entry: the key entry widget that trigered the event
icon_pos: position of the icon that trigered the event
event: the event that trigered this handler
"""
self.set_permutation(Permutation.from_key(entry.get_text()))
def _set_affine(self, *args):
""" Generate current permutation from entries in the affine box.
Args:
*args: arguments provided by the signal
"""
mult = int(self._mult_field.get_active_text())
add = int(self._add_field.get_active_text())
self.set_permutation(Permutation.affine(mult, add))
def _translate(self, widget, amount):
""" A handler method that aplies a translation to the selected
permutation.
Args:
widget: widget that trigered the event
amount: numnber of position to translate for
"""
self.apply_permutation(Permutation.shift(amount))
