AttributeError with GTK3Agg backend #12015
Description
Bug report
Examples from examples/ directory doesn't work with GTK3Agg backend.
Actual outcome
`--> python examples/showcase/anatomy.py
Gtk-Message: 02:55:03.295: Failed to load module "canberra-gtk-module"
Traceback (most recent call last):
File "/home/ildar/slivoglot-2/thirdparty/matplotlib/lib/matplotlib/backends/backend_gtk3agg.py", line 45, in on_draw_event
buf = backend_cairo._unmultipled_rgba8888_to_premultiplied_argb32(
AttributeError: module 'matplotlib.backends.backend_cairo' has no attribute '_unmultipled_rgba8888_to_premultiplied_argb32'
Traceback (most recent call last):
File "/home/ildar/slivoglot-2/thirdparty/matplotlib/lib/matplotlib/backends/backend_gtk3agg.py", line 45, in on_draw_event
buf = backend_cairo._unmultipled_rgba8888_to_premultiplied_argb32(
AttributeError: module 'matplotlib.backends.backend_cairo' has no attribute '_unmultipled_rgba8888_to_premultiplied_argb32'
Traceback (most recent call last):
File "/home/ildar/slivoglot-2/thirdparty/matplotlib/lib/matplotlib/backends/backend_gtk3agg.py", line 45, in on_draw_event
buf = backend_cairo._unmultipled_rgba8888_to_premultiplied_argb32(
AttributeError: module 'matplotlib.backends.backend_cairo' has no attribute '_unmultipled_rgba8888_to_premultiplied_argb32'
Matplotlib version
- Operating system: Debian Sid
- Matplotlib version: current master 7c0e760
- Matplotlib backend: GTK3Agg
- Python version: 3.6
- Cairocffi version: 0.9.0
- Gtk-3 version: 3.22.30