Problem with backend qt4agg

[RolandBacon]

I have a piece of code working fine with TkAgg backend. I have now move to qt4agg in order to use my plot within pyqt5.
The code now crash in get_renderer
File "/Users/rolandbacon/Dropbox/Soft/python/mpdaf/lib/mpdaf/sdetect/catalog.py", line 1189, in plot_symb
expand_points=(expand, expand))
File "/Users/rolandbacon/miniconda3/lib/python3.7/site-packages/adjustText/init.py", line 425, in adjust_text
r = get_renderer(ax.get_figure())
File "/Users/rolandbacon/miniconda3/lib/python3.7/site-packages/adjustText/init.py", line 39, in get_renderer
return fig.canvas.renderer

builtins.AttributeError: 'NoneType' object has no attribute 'renderer'

[Phlya]

Thanks for reporting. I am really busy at the moment, but it would really help to fix this if you could figure out how to get the renderer for qt4agg backend... Annoyingly, it can vary between backends, and I have already merged a PR to fix this for MacOS renderer, but I guess qt4agg is different from the default and from MacOS too.
#15

[RolandBacon]

I found a few link which may be useful there, but no idea how this could be implemented. Hope this will be useful.
Thanks in advance for your help

matplotlib/matplotlib#1852

https://sourceforge.net/p/matplotlib/mailman/matplotlib-devel/?viewmonth=201007&viewday=22

Is a backend required to implement a get_renderer method? I only see it implemented in backend_agg.py, and it's missing in backend_bases.py, backend_template.py, backend_cairo.py, and in the macosx backend. If you want to try your code with the macosx backend, you can use fig.canvas.renderer instead of fig.canvas.get_renderer().

[Phlya]

Ugh, thanks, this is really annoying, thanks for digging though!