Interface SwipeTracker.PrepareCallback

All Superinterfaces:
FunctionPointer
Enclosing class:
SwipeTracker
Functional Interface:
This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
@FunctionalInterface public static interface SwipeTracker.PrepareCallback extends FunctionPointer

Functional interface declaration of the PrepareCallback callback.

See Also:

  • Method Details

    • run

      void run(NavigationDirection direction)

      This signal is emitted when a possible swipe is detected.

      The direction value can be used to restrict the swipe to a certain direction.

    • upcall

      default void upcall(MemorySegment sourceSwipeTracker, int direction)
      The upcall method is called from native code. The parameters are marshaled and run(NavigationDirection) is executed.

    • toCallback

      default MemorySegment toCallback(Arena arena)
      Creates a native function pointer to the upcall(MemorySegment, int) method.
      Specified by:
      toCallback in interface FunctionPointer
      Parameters:
      arena - the arena in which the function pointer is allocated
      Returns:
      the native function pointer