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shouldInvalidateLayoutForChange(fromVisibleRect:toVisibleRect:)

Determines whether the scrubber should refresh its layout in response to a change of its visible region.

Declaration

func shouldInvalidateLayoutForChange(fromVisibleRect: NSRect, toVisibleRect: NSRect) -> Bool

Discussion

If true, the scrubber invalidates its layout in response to a change of the visible region, in response to a user scroll action, or to the scrubber being resized. Subclasses that rely on the size or origin of the visible region should return true.

The base implementation of this method returns false.

See Also

Subclassing a scrubber layout