Struct WKB 

pub struct WKB<C: Composer> { /* private fields */ }

Core keyboard state machine. Tracks modifier state, key presses, and compose sequences.

C is the compose backend — typically [ListComposer] when using the xkb feature.

Implementations

impl WKB<ListComposer>

pub fn new_from_names(locale: String, layout: Option<String>) -> Self

Create WKB instance from RMLVO names (Rules, Model, Layout, Variant, Options)

pub fn new_from_string(string: String) -> Self

Create WKB instance from XKB keymap string

impl<C: Composer> WKB<C>

pub fn reset_state(&mut self)

Reset all transient input state: compose sequence and pressed keys. Call on wl_keyboard.leave or when focus changes.

pub fn modifiers_state(&self) -> (u32, u32, u32, u32)

Return the current modifier state as (depressed, latched, locked, group) bitmasks.

pub fn leds_state(&self) -> u32

Return the LED indicator state as a bitmask (bit 0 = NumLock, bit 1 = CapsLock, bit 2 = ScrollLock).

pub fn update_modifiers( &mut self, depressed: u32, latched: u32, locked: u32, group: u32, )

Apply modifier state received from wl_keyboard.modifiers. Updates depressed, latched, locked masks and active layout group.

pub fn level_key(&self, evdev_code: u32, level_index: usize) -> Option<char>

Look up the character at a specific shift level for the given evdev keycode.

pub fn num_levels(&self) -> usize

Return the number of shift levels supported by this keymap.

pub fn key_repeats(&self, evdev_code: u32) -> bool

Return whether the given evdev keycode is a repeating key.

pub fn utf8(&mut self, evdev_code: u32) -> Option<char>

Resolve the character for the given evdev keycode under the current modifier state.

pub fn key( &mut self, evdev_code: u32, key_direction: KeyDirection, ) -> (Option<char>, bool)

Process a key event: update state and return (character, is_modifier).

pub fn key_compose( &mut self, evdev_code: u32, key_direction: KeyDirection, ) -> (Option<ComposeState>, bool)

Process a key event with compose support. Returns (compose_state, is_modifier).

pub fn layouts(&self) -> Vec<String>

Return the list of layout names available in this keymap.

pub fn current_layout(&self) -> String

Return the name of the currently active layout.

pub fn as_xkb_string(&self) -> Option<String>

Serialize the underlying XKB keymap to v1 text format.

Returns None if the instance was not built from an XKB keymap.

Trait Implementations

impl<C: Clone + Composer> Clone for WKB<C>

fn clone(&self) -> WKB<C>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<C: Debug + Composer> Debug for WKB<C>

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

Formats the value using the given formatter.