Enum LayoutDirection 

pub enum LayoutDirection {
    LeftToRight,
    RightToLeft,
}

The direction the interface reads in.

Left to right is the default, so a host that never sets one renders exactly as it did before this existed.

Variants

LeftToRight

RightToLeft

Implementations

impl LayoutDirection

pub fn is_rtl(self) -> bool

pub fn is_ltr(self) -> bool

pub fn start(self) -> PhysicalSide

The physical edge that reading begins at.

pub fn end(self) -> PhysicalSide

The physical edge that reading ends at.

pub fn arrow_step(self, key: &str) -> Option<i32>

How far one step through reading order moves when a physical arrow key is pressed. None for a key that is not a horizontal arrow.

A Left arrow means “previous” while reading left to right and “next” while reading right to left, so a component that steps a selection asks this instead of matching on the key name.

Trait Implementations

impl Clone for LayoutDirection

fn clone(&self) -> LayoutDirection

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for LayoutDirection

impl Debug for LayoutDirection

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

Formats the value using the given formatter.

impl Default for LayoutDirection

fn default() -> LayoutDirection

Returns the “default value” for a type.

impl Eq for LayoutDirection

impl Hash for LayoutDirection

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 for LayoutDirection

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for LayoutDirection