Enum OptionAsAlt 

pub enum OptionAsAlt {
    None,
    Left,
    Right,
    Both,
}

Which Option keys act as Alt on macOS — what a frame declares with crate::Ui::option_as_alt. On a Mac, Option composes: ⌥m types “µ”, and ⌥u, ⌥e, ⌥i, ⌥n and ⌥` are dead keys that start an accent and wait for the next key, so the press never arrives as a key at all and a keymap that binds <A-u> never hears it. An Option key named here is Alt instead: it composes nothing, types nothing, and every key under it arrives as a chord of the key the layout prints unmodified — what a terminal’s “Option as Meta” and an editor’s Alt bindings want. None, the default, is the Mac’s own behaviour; one side leaves the other composing, so a user keeps ü on the right Option while the left one is Alt. Other platforms have no such composition on Alt and read nothing here.

Variants

None

Left

Right

Both

Implementations

impl OptionAsAlt

pub const ALL: [OptionAsAlt; 4]

Every value, in the order of the C door’s numbers.

pub fn name(self) -> &'static str

The prop’s spelling: "none", "left", "right", "both".

pub fn from_name(s: &str) -> Option<OptionAsAlt>

pub fn index(self) -> u32

The C door’s number (KUI_OPTION_AS_ALT_*) and the binary IR’s: 0 none, 1 left, 2 right, 3 both.

pub fn from_index(index: u32) -> Option<OptionAsAlt>

The value at index; None past the four, so a door can refuse what it does not know rather than guess.

pub fn covers(self, location: KeyLocation) -> bool

Whether an Option key at location is Alt under this setting.

Trait Implementations

impl Clone for OptionAsAlt

fn clone(&self) -> OptionAsAlt

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for OptionAsAlt

impl Debug for OptionAsAlt

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

Formats the value using the given formatter.

impl Default for OptionAsAlt

fn default() -> OptionAsAlt

Returns the “default value” for a type.

impl Eq for OptionAsAlt

impl Hash for OptionAsAlt

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

where __H: Hasher,

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 for OptionAsAlt

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for OptionAsAlt