Struct LayoutDirectionKey 

pub struct LayoutDirectionKey;

\EnvironmentValues.layoutDirection — which way text and layout run.

Trait Implementations

impl Clone for LayoutDirectionKey

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for LayoutDirectionKey

impl EnvKey for LayoutDirectionKey

type Value = LayoutDirection

What the property holds.

fn field_type() -> &'static [u8]

The mangled Environment<Value>, NUL-terminated, for the field record.

fn value_type() -> &'static [u8]

The mangled Value on its own.

fn key_path() -> u64

\EnvironmentValues.<property>, built once.

fn buffer_bytes() -> usize

How many bytes the getter writes.

unsafe fn decode(b: &[u8]) -> Self::Value

Read Value out of the getter’s @out buffer.

fn encode(v: &Self::Value) -> u8

The tag a Value is stored as — decode’s inverse.