Snap to grid for given fraction of grid

[misteu]

Description

Hello!

I did not find anything where I can set up some kind of Snap to grid, e.g. for snapping to half / full or whatever-fraction-of-grid steps.

If this is true and I did not overlook something, I would have a small addition for PianoRollNoteView I could add as a PR.

Also if you don't mind, can you add the "hacktoberfest" topic to the repo? I'd like to participate with that PR :)

Proposed Solution

Add a method that "clamps" the value to a given fraction inside of the existing snap(...) method.

e.g. when clamped(n.start, 0.25) is used, it would snap to 0, 0.25, 0.5, 0.75 and 1 (and so on).

This also nicely works with the preview rectangle shown when dragging around.

Describe Alternatives You've Considered

I searched for an existing implementation in the package but did not find anything.

Additional Context

No response