Interface Gesture.EndCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

Gesture

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 Gesture.EndCallback
extends FunctionPointer

Functional interface declaration of the EndCallback callback.

See Also:

• run(EventSequence)

Method Summary

Modifier and Type	Method	Description
void	run(@Nullable EventSequence sequence)	Emitted when gesture either stopped recognizing the event sequences as something to be handled, or the number of touch sequences became higher or lower than Gtk.Gesture:n-points.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(MemorySegment, MemorySegment) method.
default void	upcall(MemorySegment sourceGesture, MemorySegment sequence)	The upcall method is called from native code.

Method Details

run

void run(@Nullable EventSequence sequence)

Emitted when gesture either stopped recognizing the event sequences as something to be handled, or the number of touch sequences became higher or lower than Gtk.Gesture:n-points.

Note: sequence might not pertain to the group of sequences that were previously triggering recognition on gesture (ie. a just pressed touch sequence that exceeds Gtk.Gesture:n-points). This situation may be detected by checking through Gesture.handlesSequence(EventSequence).

upcall

default void upcall(MemorySegment sourceGesture,
 MemorySegment sequence)

The upcall method is called from native code. The parameters are marshaled and run(EventSequence) is executed.

toCallback

default MemorySegment toCallback(Arena arena)

Creates a native function pointer to the upcall(MemorySegment, MemorySegment) method.

Specified by:

toCallback in interface FunctionPointer

Parameters:

arena - the arena in which the function pointer is allocated

Returns:

the native function pointer