Instance Method

shouldRequireFailure(of:)

Overridden to indicate that the specified gesture recognizer must fail before the current object begins recognizing its gesture.

Declaration

func shouldRequireFailure(of otherGestureRecognizer: NSGestureRecognizer) -> Bool

Parameters

otherGestureRecognizer

The gesture recognizer that must fail before the current object is allowed to recognize its gesture.

Return Value

true to cause the current object to wait to recognize its own gesture until the object in otherGestureRecognizer fails.

Discussion

Using this method lets you define rules that apply to all instances of your custom gesture recognizer class.

See Also

Methods for Subclasses

func reset()

Overridden to reset the internal state of the gesture recognizer when an attempt completes.

func mouseDown(with: NSEvent)

Informs the gesture recognizer that the user pressed the left mouse button.

func mouseDragged(with: NSEvent)

Informs the gesture recognizer that the user moved the mouse with the left button pressed.

func mouseUp(with: NSEvent)

Informs the gesture recognizer that the user released the left mouse button.

func otherMouseDown(with: NSEvent)

Informs the gesture recognizer that the user pressed a mouse button other than the left or right one.

func otherMouseDragged(with: NSEvent)

Informs the gesture recognizer that the user moved the mouse with a button other than the left or right one pressed.

func otherMouseUp(with: NSEvent)

Informs the gesture recognizer that the user released a mouse button other than the left or right one.

func rightMouseDown(with: NSEvent)

Informs the gesture recognizer that the user pressed the right mouse button.

func rightMouseDragged(with: NSEvent)

Informs the gesture recognizer that the user moved the mouse with the right button pressed.

func rightMouseUp(with: NSEvent)

Informs the gesture recognizer that the user released the right mouse button.

func magnify(with: NSEvent)

Informs the gesture recognizer that the user is performing a pinch gesture.

func rotate(with: NSEvent)

Informs the gesture recognizer that the user is performing a rotation gesture.

func canBePrevented(by: NSGestureRecognizer) -> Bool

Overridden to indicate that the specified gesture recognizer can prevent the current object from recognizing a gesture.

func canPrevent(NSGestureRecognizer) -> Bool

Overridden to indicate that the current object can prevent the specified gesture recognizer from recognizing its gesture.

func shouldBeRequiredToFail(by: NSGestureRecognizer) -> Bool

Overridden to indicate that the current object must fail before the specified gesture recognizer begins recognizing its gesture.

func keyDown(with: NSEvent)

Informs the gesture recognizer that the user has pressed a key.

func keyUp(with: NSEvent)

Informs the gesture recognizer that the user released a key.

func tabletPoint(with: NSEvent)

Informs the user that a tablet-point event occurred.

func flagsChanged(with: NSEvent)

Informs the current object that the user pressed or released a modifier key (Shift, Control, and so on).

func pressureChange(with: NSEvent)

Informs the current object that a pressure change occurred on a system that supports pressure sensitivity.