tcaswell@eowyn:lib$ ack-grep 'def get_window_extent'
mpl_toolkits/axisartist/axis_artist.py
437:    def get_window_extent(self, renderer):
625:    def get_window_extent(self, renderer):
806:    def get_window_extents(self, renderer):

matplotlib/axes/_base.py
473:    def get_window_extent(self, *args, **kwargs):

matplotlib/artist.py
190:    def get_window_extent(self, renderer):

matplotlib/lines.py
531:    def get_window_extent(self, renderer):

matplotlib/image.py
1097:    def get_window_extent(self, renderer=None):

matplotlib/text.py
763:    def get_window_extent(self, renderer=None, dpi=None):
1285:    def get_window_extent(self, renderer=None):
2088:    def get_window_extent(self, renderer=None):

matplotlib/figure.py
490:    def get_window_extent(self, *args, **kwargs):

matplotlib/offsetbox.py
252:    def get_window_extent(self, renderer):
618:    def get_window_extent(self, renderer):
769:    def get_window_extent(self, renderer):
884:    def get_window_extent(self, renderer):
1058:    def get_window_extent(self, renderer):
1265:    def get_window_extent(self, renderer):

matplotlib/patches.py
490:    def get_window_extent(self, renderer=None):

matplotlib/legend.py
798:    def get_window_extent(self, *args, **kwargs):

matplotlib/table.py
288:    def get_window_extent(self, renderer):

matplotlib/collections.py
207:    def get_window_extent(self, renderer):