Proposal to change double click event vtk mapping

Hi all,

for 3DSlicer we use different mapping for double clicks in the QVTKInteractor: we differentiate single and double click events, i.e

We would like to merge this PR in vtk upstream since @jcfr is updating the Slicer VTK branch.

We tested the PR around one year ago and at the time we didn’t see any issue with VTK widgets or views. However, we are concerned that the PR can break some applications. Please let us know if there would be any issue or if you would like to keep the previous mapping (single clicks and double clicks having the same event).

Thanks,

Davide.

MR: https://gitlab.kitware.com/vtk/vtk/-/merge_requests/7193
for reference: https://github.com/Slicer/Slicer/pull/5141#discussion_r479690583

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