FIX: pass renderer through _auto_legend_data
#29317
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oscargus
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timhoffm
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…317-on-v3.10.x Backport PR #29317 on branch v3.10.x (FIX: pass renderer through `_auto_legend_data`)
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PR summary
Fixes #29301.
The problem was that
FigureCanvasPS._print_figureessentially got into a loop of calling itself: somewhere within figure.draw we needed to callfigure._get_rendererin order to calculate the annotation window extent and therefore the legend position._get_rendererultimately callsFigureCanvasPS._print_figureagain. I haven't quite followed why, but by the time we get to the end ofFigureCanvasPS._print_figure, _ps_writer which should contain all the information about the artists is empty.We can avoid all this by just passing the renderer we already have hold of to
get_window_extent.PR checklist