Struct WlKeyboard

pub struct WlKeyboard { /* private fields */ }

keyboard input device

The wl_keyboard interface represents one or more keyboards associated with a seat.

Each wl_keyboard has the following logical state:

• an active surface (possibly null),
• the keys currently logically down,
• the active modifiers,
• the active group.

By default, the active surface is null, the keys currently logically down are empty, the active modifiers and the active group are 0.

See also the Request enum for this interface.

Implementations

impl WlKeyboard

pub fn keymap(&self, format: KeymapFormat, fd: BorrowedFd<'_>, size: u32)

keyboard mapping

This event provides a file descriptor to the client which can be memory-mapped in read-only mode to provide a keyboard mapping description.

From version 7 onwards, the fd must be mapped with MAP_PRIVATE by the recipient, as MAP_SHARED may fail.

pub fn enter(&self, serial: u32, surface: &WlSurface, keys: Vec<u8>)

enter event

Notification that this seat’s keyboard focus is on a certain surface.

The compositor must send the wl_keyboard.modifiers event after this event.

In the wl_keyboard logical state, this event sets the active surface to the surface argument and the keys currently logically down to the keys in the keys argument. The compositor must not send this event if the wl_keyboard already had an active surface immediately before this event.

pub fn leave(&self, serial: u32, surface: &WlSurface)

leave event

Notification that this seat’s keyboard focus is no longer on a certain surface.

The leave notification is sent before the enter notification for the new focus.

In the wl_keyboard logical state, this event resets all values to their defaults. The compositor must not send this event if the active surface of the wl_keyboard was not equal to the surface argument immediately before this event.

pub fn key(&self, serial: u32, time: u32, key: u32, state: KeyState)

key event

A key was pressed or released. The time argument is a timestamp with millisecond granularity, with an undefined base.

The key is a platform-specific key code that can be interpreted by feeding it to the keyboard mapping (see the keymap event).

If this event produces a change in modifiers, then the resulting wl_keyboard.modifiers event must be sent after this event.

In the wl_keyboard logical state, this event adds the key to the keys currently logically down (if the state argument is pressed) or removes the key from the keys currently logically down (if the state argument is released). The compositor must not send this event if the wl_keyboard did not have an active surface immediately before this event. The compositor must not send this event if state is pressed (resp. released) and the key was already logically down (resp. was not logically down) immediately before this event.

pub fn modifiers( &self, serial: u32, mods_depressed: u32, mods_latched: u32, mods_locked: u32, group: u32, )

modifier and group state

Notifies clients that the modifier and/or group state has changed, and it should update its local state.

The compositor may send this event without a surface of the client having keyboard focus, for example to tie modifier information to pointer focus instead. If a modifier event with pressed modifiers is sent without a prior enter event, the client can assume the modifier state is valid until it receives the next wl_keyboard.modifiers event. In order to reset the modifier state again, the compositor can send a wl_keyboard.modifiers event with no pressed modifiers.

In the wl_keyboard logical state, this event updates the modifiers and group.

pub fn repeat_info(&self, rate: i32, delay: i32)

repeat rate and delay

Informs the client about the keyboard’s repeat rate and delay.

This event is sent as soon as the wl_keyboard object has been created, and is guaranteed to be received by the client before any key press event.

Negative values for either rate or delay are illegal. A rate of zero will disable any repeating (regardless of the value of delay).

This event can be sent later on as well with a new value if necessary, so clients should continue listening for the event past the creation of wl_keyboard.

Trait Implementations

impl Borrow<ObjectId> for WlKeyboard

fn borrow(&self) -> &ObjectId

Immutably borrows from an owned value.

impl Clone for WlKeyboard

fn clone(&self) -> WlKeyboard

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for WlKeyboard

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Hash for WlKeyboard

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq<Weak<WlKeyboard>> for WlKeyboard

fn eq(&self, other: &Weak<WlKeyboard>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialEq for WlKeyboard

fn eq(&self, other: &WlKeyboard) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Resource for WlKeyboard

type Request = Request

The request enum for this interface

type Event<'event> = Event<'event>

The event enum for this interface

fn interface() -> &'static Interface

The interface description

fn id(&self) -> ObjectId

The ID of this object

fn version(&self) -> u32

The version of this object

fn data<U: 'static>(&self) -> Option<&U>

Access the user-data associated with this object

fn object_data(&self) -> Option<&Arc<dyn Any + Send + Sync>>

Access the raw data associated with this object.

fn handle(&self) -> &WeakHandle

Access the backend handle associated with this object

fn from_id(conn: &DisplayHandle, id: ObjectId) -> Result<Self, InvalidId>

Create an object resource from its ID

fn send_event(&self, evt: Self::Event<'_>) -> Result<(), InvalidId>

Send an event to this object

fn parse_request( conn: &DisplayHandle, msg: Message<ObjectId, OwnedFd>, ) -> Result<(Self, Self::Request), DispatchError>

Parse a event for this object

fn write_event<'a>( &self, conn: &DisplayHandle, msg: Self::Event<'a>, ) -> Result<Message<ObjectId, BorrowedFd<'a>>, InvalidId>

Serialize an event for this object

fn client(&self) -> Option<Client>

The client owning this object

fn is_alive(&self) -> bool

Checks if the Wayland object associated with this proxy is still alive

fn post_error(&self, code: impl Into<u32>, error: impl Into<String>)

Trigger a protocol error on this object

fn downgrade(&self) -> Weak<Self>

Creates a weak handle to this object

impl Eq for WlKeyboard