Enum TransformStep 

#[non_exhaustive]
pub enum TransformStep {
    Up,
    Down,
    Leading,
    Trailing,
}

One directional nudge on a transform handle.

The vocabulary the controller’s non-pointer routes are stated in: the keyboard’s four arrows, the two halves of an assistive-technology Increment / Decrement, and the four custom actions a corner or the frame band publishes so that a screen-reader user can drive one axis at a time. Named for the frame’s own axes, like every other name in this crate — Leading is -x and Trailing is +x, whatever the reading direction.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Up

Decrease the driven vertical coordinate.

Down

Increase it.

Leading

Decrease the driven horizontal coordinate.

Trailing

Increase it.

Implementations

impl TransformStep

pub const ALL: [TransformStep; 4]

Every step, in the order a non-scalar handle publishes its custom actions. The position in this array is the [accesskit::CustomAction] id, so it is part of the published contract: reorder it and an assistive technology holding a stale tree invokes the wrong direction.

pub const fn index(self) -> usize

This step’s index in ALL.

pub const fn from_index(index: usize) -> Option<Self>

The step at index, or None — the inverse of index, used to resolve a custom-action id arriving from an assistive technology.

Trait Implementations

impl Clone for TransformStep

fn clone(&self) -> TransformStep

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for TransformStep

impl Debug for TransformStep

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

Formats the value using the given formatter.

impl Eq for TransformStep

impl Hash for TransformStep

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 Ord for TransformStep

fn cmp(&self, other: &TransformStep) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for TransformStep

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for TransformStep

fn partial_cmp(&self, other: &TransformStep) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for TransformStep