Package org.gnome.gdkpixbuf

Interface PixbufDestroyNotify

All Superinterfaces:

FunctionPointer

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
@Generated("io.github.jwharm.JavaGI")
public interface PixbufDestroyNotify
extends FunctionPointer

Functional interface declaration of the PixbufDestroyNotify callback.

See Also:

• run(byte[])

Method Summary

Modifier and Type	Method	Description
void	run(byte[] pixels)	A function of this type is responsible for freeing the pixel array of a pixbuf.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, java.lang.foreign.MemorySegment) method.
default void	upcall(MemorySegment pixels, MemorySegment data)	The upcall method is called from native code.

Method Details

run

void run(byte[] pixels)

A function of this type is responsible for freeing the pixel array of a pixbuf.

The gdk_pixbuf_new_from_data() function lets you pass in a pre-allocated pixel array so that a pixbuf can be created from it; in this case you will need to pass in a function of type GdkPixbufDestroyNotify so that the pixel data can be freed when the pixbuf is finalized.

upcall

default void upcall(MemorySegment pixels,
 MemorySegment data)

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

toCallback

default MemorySegment toCallback(Arena arena)

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