Package org.gnome.gtk

Interface EventControllerScroll.DecelerateCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

EventControllerScroll

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 EventControllerScroll.DecelerateCallback
extends FunctionPointer

Functional interface declaration of the DecelerateCallback callback.

See Also:

• run(double, double)

Method Summary

Modifier and Type	Method	Description
void	run(double velX, double velY)	Emitted after scroll is finished if the EventControllerScrollFlags.KINETIC flag is set.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, double, double) method.
default void	upcall(MemorySegment sourceEventControllerScroll, double velX, double velY)	The upcall method is called from native code.

Method Details

run

void run(double velX,
 double velY)

Emitted after scroll is finished if the EventControllerScrollFlags.KINETIC flag is set.

velX and velY express the initial velocity that was imprinted by the scroll events. velX and velY are expressed in pixels/ms.

upcall

default void upcall(MemorySegment sourceEventControllerScroll,
 double velX,
 double velY)

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 function pointer will be allocated in this arena

Returns:

the native function pointer