Package org.gnome.gtk

Interface GesturePan.PanCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

GesturePan

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 GesturePan.PanCallback
extends FunctionPointer

Functional interface declaration of the PanCallback callback.

See Also:

• run(org.gnome.gtk.PanDirection, double)

Method Summary

Modifier and Type	Method	Description
void	run(PanDirection direction, double offset)	Emitted once a panning gesture along the expected axis is detected.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, int, double) method.
default void	upcall(MemorySegment sourceGesturePan, int direction, double offset)	The upcall method is called from native code.

Method Details

run

void run(PanDirection direction,
 double offset)

Emitted once a panning gesture along the expected axis is detected.

upcall

default void upcall(MemorySegment sourceGesturePan,
 int direction,
 double offset)

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

toCallback

default MemorySegment toCallback(Arena arena)

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

Specified by:

toCallback in interface FunctionPointer

Parameters:

arena - the function pointer will be allocated in this arena

Returns:

the native function pointer