Package org.gnome.gtk

Interface IconView.MoveCursorCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

IconView

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 IconView.MoveCursorCallback
extends FunctionPointer

Functional interface declaration of the MoveCursorCallback callback.

See Also:

• run(org.gnome.gtk.MovementStep, int, boolean, boolean)

Method Summary

Modifier and Type	Method	Description
boolean	run(MovementStep step, int count, boolean extend, boolean modify)	The ::move-cursor signal is a Gtk.SignalAction which gets emitted when the user initiates a cursor movement.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, int, int, int, int) method.
default int	upcall(MemorySegment sourceIconView, int step, int count, int extend, int modify)	The upcall method is called from native code.

Method Details

run

boolean run(MovementStep step,
 int count,
 boolean extend,
 boolean modify)

The ::move-cursor signal is a Gtk.SignalAction which gets emitted when the user initiates a cursor movement.

Applications should not connect to it, but may emit it with g_signal_emit_by_name() if they need to control the cursor programmatically.

The default bindings for this signal include

• Arrow keys which move by individual steps
• Home/End keys which move to the first/last item
• PageUp/PageDown which move by "pages" All of these will extend the selection when combined with the Shift modifier.

upcall

default int upcall(MemorySegment sourceIconView,
 int step,
 int count,
 int extend,
 int modify)

The upcall method is called from native code. The parameters are marshaled and run(org.gnome.gtk.MovementStep, int, boolean, boolean) is executed.

toCallback

default MemorySegment toCallback(Arena arena)

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

Specified by:

toCallback in interface FunctionPointer

Parameters:

arena - the function pointer will be allocated in this arena

Returns:

the native function pointer