Package org.gnome.gtk

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(org.gnome.gdk.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(java.lang.foreign.MemorySegment, java.lang.foreign.MemorySegment) method.
default void	upcall(MemorySegment sourceGesture, MemorySegment sequence)	The upcall method is called from native code.

Method Details

run

void run(@Nullable
 @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(org.gnome.gdk.EventSequence).

upcall

default void upcall(MemorySegment sourceGesture,
 MemorySegment sequence)

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

toCallback

default MemorySegment toCallback(Arena arena)

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

Specified by:

toCallback in interface FunctionPointer

Parameters:

arena - the function pointer will be allocated in this arena

Returns:

the native function pointer