René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"clone more legend settings when regenerating in Qt figure options dialog","articleBody":"\r\n### Bug report\r\n\r\nxref https://stackoverflow.com/questions/62602933/matplotlib-navigation-toolbar-resets-legendstyle\r\n\r\nThe logic to regenerate the legend in the Qt figure option window discards most of the custom state set on the legend.\r\n\r\n**Bug summary**\r\n\r\nThe logic that regenerate the legend pulls only ncols and if the legend is draggable\r\n\r\nhttps://github.com/matplotlib/matplotlib/blob/e73d4e056588abc201335d8a491fd9cb37d4c296/lib/matplotlib/backends/qt_editor/figureoptions.py#L237-L246\r\n\r\nbut nothing else.  \r\n\r\n**Code for reproduction**\r\n\r\n\u003c!--A minimum code snippet required to reproduce the bug.\r\nPlease make sure to minimize the number of dependencies required, and provide\r\nany necessary plotted data.\r\nAvoid using threads, as Matplotlib is (explicitly) not thread-safe.--\u003e\r\n\r\n```python\r\nimport matplotlib .pyplot as plt\r\nfig, ax = plt.subplots()\r\nax.plot(range(5), label='a')\r\nax.plot(range(3)[::-1], label='b')\r\nax.legend(bbox_to_anchor=(0,1.02,1,0.2), loc=\"lower left\", mode=\"expand\", borderaxespad=0, ncol=3)\r\nplt.show()\r\n```\r\n\r\nopen the figure options, tick \"(Re)-generate legend\" and hit OK or apply\r\n\r\n**Actual outcome**\r\n\r\nThe legend settings are discarded when the figure is re-generated\r\n\r\n**Expected outcome**\r\n\r\nThe `bbox_to_anchor`, `loc`,... settings to be re-used.\r\n\r\n\u003c!--A description of the expected outcome from the code snippet--\u003e\r\n\u003c!--If this used to work in an earlier version of Matplotlib, please note the version it used to work on--\u003e\r\n\r\n**Matplotlib version**\r\n\u003c!--Please specify your platform and versions of the relevant libraries you are using:--\u003e\r\n  * Operating system: any\r\n  * Matplotlib version: 3.2+\r\n  * Matplotlib backend (`print(matplotlib.get_backend())`): Qt5Agg (any Qt5 backend)\r\n  * Python version: Any\r\n\r\ninstalled from source\r\n","author":{"url":"https://github.com/tacaswell","@type":"Person","name":"tacaswell"},"datePublished":"2020-06-27T00:09:01.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":5},"url":"https://github.com/17775/matplotlib/issues/17775"}