Request: Save Static Image on Close

[akaszynski]

First off, great work here! I really appreciate your work and we're making good use out of this with ipyvtk-simple.

Is there any way to save the canvas as a static image when exiting the notebook? I ask this as it would be great to have a saved notebook that has the last image from the Canvas for presenting the notebook or exporting it as a pdf.

[martinRenou]

Thanks for the kind words!

That would be great indeed. I guess it would be very similar to what we try to fix in ipympl matplotlib/ipympl#16. Unfortunately, in order to fix it, we might need to make some changes in the Notebook renderers (JupyterLab and Jupyter Notebook).

[martinRenou]

Just for awareness, I've been investigating on this issue for ipympl (which is also canvas based so the issue could be solved the same way), see matplotlib/ipympl#294

It does not work yet but I'll try to find time to fix it. We'll need to work on a similar fix for Jupyter Notebook as well.