kDoubleTapTouchSlop top-level constant

const kDoubleTapTouchSlop = kTouchSlop

The maximum distance that the first touch in a double-tap gesture can travel before deciding that it is not part of a double-tap gesture. DoubleTapGestureRecognizer also restricts the second touch to this distance.

Implementation

const double kDoubleTapTouchSlop = kTouchSlop