René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"regularize `get_window_extent`","articleBody":"The call signature on `get_window_extent` is not uniform, we should probably fix this.  \n\n```\ntcaswell@eowyn:lib$ ack-grep 'def get_window_extent'\nmpl_toolkits/axisartist/axis_artist.py\n437:    def get_window_extent(self, renderer):\n625:    def get_window_extent(self, renderer):\n806:    def get_window_extents(self, renderer):\n\nmatplotlib/axes/_base.py\n473:    def get_window_extent(self, *args, **kwargs):\n\nmatplotlib/artist.py\n190:    def get_window_extent(self, renderer):\n\nmatplotlib/lines.py\n531:    def get_window_extent(self, renderer):\n\nmatplotlib/image.py\n1097:    def get_window_extent(self, renderer=None):\n\nmatplotlib/text.py\n763:    def get_window_extent(self, renderer=None, dpi=None):\n1285:    def get_window_extent(self, renderer=None):\n2088:    def get_window_extent(self, renderer=None):\n\nmatplotlib/figure.py\n490:    def get_window_extent(self, *args, **kwargs):\n\nmatplotlib/offsetbox.py\n252:    def get_window_extent(self, renderer):\n618:    def get_window_extent(self, renderer):\n769:    def get_window_extent(self, renderer):\n884:    def get_window_extent(self, renderer):\n1058:    def get_window_extent(self, renderer):\n1265:    def get_window_extent(self, renderer):\n\nmatplotlib/patches.py\n490:    def get_window_extent(self, renderer=None):\n\nmatplotlib/legend.py\n798:    def get_window_extent(self, *args, **kwargs):\n\nmatplotlib/table.py\n288:    def get_window_extent(self, renderer):\n\nmatplotlib/collections.py\n207:    def get_window_extent(self, renderer):\n\n```\n- for `Axes` and `Figure` the arguments are ignored, in legend they are passed through to `Patch`'s  .  These should probably be given explicit arguments. \n- `Text` effectively implements a context manager on the `figure.dpi`.  From the doc-string this seems like it is for making image maps for web images easy, but there has to be a better way to do this.\n- if we are going to let artists cache the renderer, it should happen at the artist level, not on a per-subclass basis\n","author":{"url":"https://github.com/tacaswell","@type":"Person","name":"tacaswell"},"datePublished":"2015-01-31T20:36:11.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/4058/matplotlib/issues/4058"}