Package org.gnome.gtk

Interface FontFilterFunc

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 FontFilterFunc
extends FunctionPointer

Functional interface declaration of the FontFilterFunc callback.

See Also:

• run(org.gnome.pango.FontFamily, org.gnome.pango.FontFace)

Method Summary

Modifier and Type	Method	Description
boolean	run(FontFamily family, FontFace face)	The type of function that is used for deciding what fonts get shown in a GtkFontChooser.
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) method.
default int	upcall(MemorySegment family, MemorySegment face, MemorySegment data)	The upcall method is called from native code.

Method Details

run

boolean run(FontFamily family,
 FontFace face)

The type of function that is used for deciding what fonts get shown in a GtkFontChooser.

See FontChooser.setFilterFunc(org.gnome.gtk.FontFilterFunc).

upcall

default int upcall(MemorySegment family,
 MemorySegment face,
 MemorySegment data)

The upcall method is called from native code. The parameters are marshaled and run(org.gnome.pango.FontFamily, org.gnome.pango.FontFace) 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) method.

Specified by:

toCallback in interface FunctionPointer

Parameters:

arena - the function pointer will be allocated in this arena

Returns:

the native function pointer