Struct CapsLockEstimate 

pub struct CapsLockEstimate { /* private fields */ }

A running estimate of whether Caps Lock is engaged, inferred from typed letters. Cheap to copy and to keep alive; update it by feeding each typed character (and the Shift state that produced it) through observe / observe_text.

Implementations

impl CapsLockEstimate

pub fn new() -> CapsLockEstimate

A fresh estimate with Caps Lock assumed off.

pub fn on(&self) -> bool

The current best guess: true iff the most recent alphabetic keystroke implied Caps Lock is engaged.

pub fn observe(&mut self, ch: char, shift: bool) -> bool

Returns the updated on state; non-ASCII-alphabetic characters leave it unchanged. Result is order-independent for a run typed under one Shift state, so callers may pass every char.

pub fn observe_text(&mut self, text: &str, shift: bool)

Fold every character of a typed text run (all produced under the same shift state — as winit delivers a single KeyEvent).

Trait Implementations

impl Clone for CapsLockEstimate

fn clone(&self) -> CapsLockEstimate

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CapsLockEstimate

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

Formats the value using the given formatter.

impl Default for CapsLockEstimate

fn default() -> CapsLockEstimate

Returns the “default value” for a type.

impl PartialEq for CapsLockEstimate

fn eq(&self, other: &CapsLockEstimate) -> 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 Copy for CapsLockEstimate

impl Eq for CapsLockEstimate

impl StructuralPartialEq for CapsLockEstimate