Package org.gnome.gdk

Interface Seat.ToolAddedCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

Seat

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 Seat.ToolAddedCallback
extends FunctionPointer

Functional interface declaration of the ToolAddedCallback callback.

See Also:

• run(org.gnome.gdk.DeviceTool)

Method Summary

Modifier and Type	Method	Description
void	run(@Nullable DeviceTool tool)	Emitted whenever a new tool is made known to the seat.
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 sourceSeat, MemorySegment tool)	The upcall method is called from native code.

Method Details

run

void run(@Nullable DeviceTool tool)

Emitted whenever a new tool is made known to the seat.

The tool may later be assigned to a device (i.e. on proximity with a tablet). The device will emit the Gdk.Device::tool-changed signal accordingly.

A same tool may be used by several devices.

upcall

default void upcall(MemorySegment sourceSeat,
 MemorySegment tool)

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

Returns:

the native function pointer