PrintOperationPreview.ReadyCallback (java-gi API)

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.ReadyCallback extends FunctionPointer

Functional interface declaration of the ReadyCallback callback.

See Also:

Method Summary

Modifier and Type

Method

Description

void

run(PrintContext context)

The ::ready signal gets emitted once per preview operation, before the first page is rendered.

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 sourcePrintOperationPreview, MemorySegment context)

The upcall method is called from native code.

Method Details
- run
  
  void run(PrintContext context)
  
  The ::ready signal gets emitted once per preview operation, before the first page is rendered.
  A handler for this signal can be used for setup tasks.
- upcall
  
  default void upcall(MemorySegment sourcePrintOperationPreview, MemorySegment context)
  
  The upcall method is called from native code. The parameters are marshaled and run(org.gnome.gtk.PrintContext) 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