Package org.gnome.gdk

Interface FrameClock.UpdateCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

FrameClock

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 FrameClock.UpdateCallback
extends FunctionPointer

Functional interface declaration of the UpdateCallback callback.

See Also:

• run()

Method Summary

Modifier and Type	Method	Description
void	run()	Emitted as the first step of toolkit and application processing of the frame.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment) method.
default void	upcall(MemorySegment sourceFrameClock)	The upcall method is called from native code.

Method Details

run

void run()

Emitted as the first step of toolkit and application processing of the frame.

Animations should be updated using FrameClock.getFrameTime(). Applications can connect directly to this signal, or use gtk_widget_add_tick_callback() as a more convenient interface.

upcall

default void upcall(MemorySegment sourceFrameClock)

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

toCallback

default MemorySegment toCallback(Arena arena)

Creates a native function pointer to the upcall(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