Instance Property

scrollingDeltaY

The scroll wheel’s vertical delta.

Declaration

var scrollingDeltaY: CGFloat { get }

Discussion

This is the preferred property for accessing NSScrollWheel delta values. When hasPreciseScrollingDeltas is false, multiply the value returned by this method by the line or row height. Otherwise scroll by the returned amount.

See Also

Scroll Wheel and Flick Events

var hasPreciseScrollingDeltas: Bool

A Boolean value that indicates whether precise scrolling deltas are available.

var scrollingDeltaX: CGFloat

The scroll wheel’s horizontal delta.

var momentumPhase: NSEvent.Phase

The momentum phase for a scroll or flick gesture.

var phase: NSEvent.Phase

The phase of a gesture event, such as a magnify, scroll, or pressure change.

struct NSEvent.Phase

Constants that represent the possible phases during an event phase.

class var isSwipeTrackingFromScrollEventsEnabled: Bool
func trackSwipeEvent(options: NSEvent.SwipeTrackingOptions = [], dampenAmountThresholdMin: CGFloat, max: CGFloat, usingHandler: (CGFloat, NSEvent.Phase, Bool, UnsafeMutablePointer<ObjCBool>) -> Void)

Allows tracking and user interface feedback of scroll wheel events.

struct NSEvent.SwipeTrackingOptions

Constants that specify swipe-tracking options.

var isDirectionInvertedFromDevice: Bool

A Boolean value that indicates whether the user has changed the device inversion.