Package org.gnome.gtk

Interface PrintOperationPreview.GotPageSizeCallback

All Superinterfaces:

FunctionPointer

Enclosing interface:

PrintOperationPreview

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 PrintOperationPreview.GotPageSizeCallback
extends FunctionPointer

Functional interface declaration of the GotPageSizeCallback callback.

See Also:

• run(org.gnome.gtk.PrintContext, org.gnome.gtk.PageSetup)

Method Summary

Modifier and Type	Method	Description
void	run(@Nullable PrintContext context, @Nullable PageSetup pageSetup)	Emitted once for each page that gets rendered to the preview.
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 void	upcall(MemorySegment sourcePrintOperationPreview, MemorySegment context, MemorySegment pageSetup)	The upcall method is called from native code.

Method Details

run

void run(@Nullable PrintContext context,
 @Nullable PageSetup pageSetup)

Emitted once for each page that gets rendered to the preview.

A handler for this signal should update the context according to pageSetup and set up a suitable cairo context, using PrintContext.setCairoContext(org.freedesktop.cairo.Context, double, double).

upcall

default void upcall(MemorySegment sourcePrintOperationPreview,
 MemorySegment context,
 MemorySegment pageSetup)

The upcall method is called from native code. The parameters are marshaled and run(org.gnome.gtk.PrintContext, org.gnome.gtk.PageSetup) 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 arena in which the function pointer is allocated

Returns:

the native function pointer