BusyBar is not clipped if not in a window parent

[czyzby]

If BusyBar is added directly to a Stage or a parent that does not clip it by default (like Table or Container), it will be drawn over other widgets and actually take much more space than its width setting allows it to. The widget currently works as expected only when paired with a Window.

When BusyBar width equals zero, it will not move at all, but its image will still be drawn in its fullest (again - taking much more space than 0). The lack of movement might be expected, but I still think the BusyBar drawable should be clipped to its current width.

The widget itself could also use some additional properties like speed modifier and moving direction (both possibly accessible through its style?).

[kotcrab]

The widget itself could also use some additional properties like speed modifier and moving direction (both possibly accessible through its style?).

Speed modifier can be achieved by overriding getSegmentDeltaX(), it depends on width so it's not hardcoded into skin. Do we really need busy bar moving in other direction?

[kotcrab]

@czyzby please confirm the clipping is working correctly.

Forgot to mention issue in commit 0d5ac36.

[czyzby]

I can confirm that the busy bar is correctly rendered in the latest snapshot.

To be honest, it would be nice to be able to modify speed and movement direction through widget properties, but it's such a niche actor that it's not really necessary.