Package org.gnome.gtk

Interface GestureDrag.DragUpdateCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

GestureDrag

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 GestureDrag.DragUpdateCallback
extends FunctionPointer

Functional interface declaration of the DragUpdateCallback callback.

See Also:

• run(double, double)

Method Summary

Modifier and Type	Method	Description
void	run(double offsetX, double offsetY)	Emitted whenever the dragging point moves.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, double, double) method.
default void	upcall(MemorySegment sourceGestureDrag, double offsetX, double offsetY)	The upcall method is called from native code.

Method Details

run

void run(double offsetX,
 double offsetY)

Emitted whenever the dragging point moves.

upcall

default void upcall(MemorySegment sourceGestureDrag,
 double offsetX,
 double offsetY)

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

toCallback

default MemorySegment toCallback(Arena arena)

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

Specified by:

toCallback in interface FunctionPointer

Parameters:

arena - the arena in which the function pointer is allocated

Returns:

the native function pointer