UI - Build reusable slider/spinbox combo widget

[schoinh]

Use Case

As a plugin developer, I need a reusable custom widget that contains a slider and a spinbox that are synced to each other. Qt's QSlider widget only supports integer values, so it needs to be adapted to work with float input and outputs as well.

Notes

• AGAVE has a similar Qt widget (in C++) we could use for inspiration / borrow from.
• MagicGUI has a FloatSlider we could potentially use if it integrates nicely with rest of our Qt code

Alternatives

• If we are very short on time, for the FPP, we could consider using a QDoubleSpinBox only instead of a slider + spinbox combo.

@Aerendel FYI

[Aerendel]

@schoinh looks like we won't need this story since we are using the magicgui widget?

[schoinh]

Right. Maybe down the road we'll get really picky about what the magicgui widget does/doesn't offer but I think that should be a separate ticket if/when we need it.