Package org.gnome.gtk

Interface GestureRotate.AngleChangedCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

GestureRotate

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 GestureRotate.AngleChangedCallback
extends FunctionPointer

Functional interface declaration of the AngleChangedCallback callback.

See Also:

• run(double, double)

Method Summary

Modifier and Type	Method	Description
void	run(double angle, double angleDelta)	Emitted when the angle between both tracked points changes.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, double, double) method.
default void	upcall(MemorySegment sourceGestureRotate, double angle, double angleDelta)	The upcall method is called from native code.

Method Details

run

void run(double angle,
 double angleDelta)

Emitted when the angle between both tracked points changes.

upcall

default void upcall(MemorySegment sourceGestureRotate,
 double angle,
 double angleDelta)

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