Package org.gnome.gtk

Interface CellAllocCallback

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 CellAllocCallback
extends FunctionPointer

Functional interface declaration of the CellAllocCallback callback.

See Also:

• run(org.gnome.gtk.CellRenderer, org.gnome.gdk.Rectangle, org.gnome.gdk.Rectangle)

Method Summary

Modifier and Type	Method	Description
boolean	run(CellRenderer renderer, Rectangle cellArea, Rectangle cellBackground)	The type of the callback functions used for iterating over the cell renderers and their allocated areas inside a GtkCellArea, see gtk_cell_area_foreach_alloc().
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, java.lang.foreign.MemorySegment, java.lang.foreign.MemorySegment, java.lang.foreign.MemorySegment) method.
default int	upcall(MemorySegment renderer, MemorySegment cellArea, MemorySegment cellBackground, MemorySegment data)	The upcall method is called from native code.

Method Details

run

boolean run(CellRenderer renderer,
 Rectangle cellArea,
 Rectangle cellBackground)

The type of the callback functions used for iterating over the cell renderers and their allocated areas inside a GtkCellArea, see gtk_cell_area_foreach_alloc().

upcall

default int upcall(MemorySegment renderer,
 MemorySegment cellArea,
 MemorySegment cellBackground,
 MemorySegment data)

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

toCallback

default MemorySegment toCallback(Arena arena)

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