Package org.gnome.gdk

Interface Paintable.InvalidateSizeCallback

All Superinterfaces:

FunctionPointer

Enclosing interface:

Paintable

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 Paintable.InvalidateSizeCallback
extends FunctionPointer

Functional interface declaration of the InvalidateSizeCallback callback.

See Also:

• run()

Method Summary

Modifier and Type	Method	Description
void	run()	Emitted when the intrinsic size of the paintable changes.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment) method.
default void	upcall(MemorySegment sourcePaintable)	The upcall method is called from native code.

Method Details

run

void run()

Emitted when the intrinsic size of the paintable changes.

This means the values reported by at least one of Paintable.getIntrinsicWidth(), Paintable.getIntrinsicHeight() or Paintable.getIntrinsicAspectRatio() has changed.

Examples for such an event would be a paintable displaying the contents of a toplevel surface being resized.

upcall

default void upcall(MemorySegment sourcePaintable)

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

toCallback

default MemorySegment toCallback(Arena arena)

Creates a native function pointer to the upcall(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