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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def transform_cb(self, setting, value):
 """Handle callback related to changes in transformations."""

        self.make_callback('transform')

        # whence=0 because need to calculate new extents for proper
        # cutout for rotation (TODO: always make extents consider
        #  room for rotation)
        whence = 0
        self.redraw(whence=whence)