Package org.gnome.gtk

Interface GestureClick.UnpairedReleaseCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

GestureClick

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 GestureClick.UnpairedReleaseCallback
extends FunctionPointer

Functional interface declaration of the UnpairedReleaseCallback callback.

See Also:

• run(double, double, int, org.gnome.gdk.EventSequence)

Method Summary

Modifier and Type	Method	Description
void	run(double x, double y, int button, @Nullable EventSequence sequence)	Emitted whenever the gesture receives a release event that had no previous corresponding press.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, double, double, int, java.lang.foreign.MemorySegment) method.
default void	upcall(MemorySegment sourceGestureClick, double x, double y, int button, MemorySegment sequence)	The upcall method is called from native code.

Method Details

run

void run(double x,
 double y,
 int button,
 @Nullable
 @Nullable EventSequence sequence)

Emitted whenever the gesture receives a release event that had no previous corresponding press.

Due to implicit grabs, this can only happen on situations where input is grabbed elsewhere mid-press or the pressed widget voluntarily relinquishes its implicit grab.

upcall

default void upcall(MemorySegment sourceGestureClick,
 double x,
 double y,
 int button,
 MemorySegment sequence)

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

toCallback

default MemorySegment toCallback(Arena arena)

Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, double, double, int, 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