Add option to preventDefault on scroll event - #235

@martinRenou regarding #240 I tried the new feature. After installing the latest from master, I tried to set fig.canvas.capture_scroll to either True or False but it doesn't work for me. Still getting the page scrolling when trying to scroll on the canvas.

Maybe I am not using it properly... I am using it like this:

self.fig, self.axs = plt.subplots(1, 2, **figure_options)
self.fig.canvas.capture_scroll = True

Could it be an installation issue? Are you using JupyterLab or Jupyter Notebook?

I am using JupyterLab. If that's the way it should be used, could indeed be an installation issue...I am gonna try to do a fresh install of the miniconda environment when I have time and see if it's fixed there. Thanks

Be sure to run jupyter labextension install js locally (from the ipympl root directory).

That's it, it works now. Thanks for helping out and for the great work!

Nice. We should make a release with this fix.

Also the readme currently says jupyter labextension link ./js and this should probably instead say install see https://gitter.im/jupyterlab/jupyterlab?at=5ee6abf324a3382d5d68b2ae

@ianhi If we do that, the cd js && npm run watch will not be relevant anymore so we might want to remove it.

@martinRenou instructions updated in #243

Nice. We should make a release with this fix.

👍 yes please

@ianhi Release done on PyPi. It should come soon on conda-forge as well.