Enum CoordinateUnit

pub enum CoordinateUnit {
    Default,
    PhysicalPixels,
    // some variants omitted
}

Indicates the units used to specify spatial event parameters (unless otherwise noted).

Variants

Default

The physical display is mapped to a coordinate space spanning [-1000, 1000] on both the x and y axes, where positive x extends rightward and positive y extends downward.

Example: (500, -500) in the default coordinate space maps to the center of the top-right quadrant of the physical display.

PhysicalPixels

The physical display is mapped to a coordinate space spanning (0, 0) - (dispaly width, display height), where positive x extends rightward and positive y extends downward.

Test writers should use fuchsia.ui.display.singleton.Info to retrieve the physical dimensions of the display.

Note that this space matches both the size AND orientation of the physical display, so it will NOT mirror any rotations applied to the scene graph.

In general, test writers should NOT assume that a particular view’s logical coordinate space matches the physical coordinate space.

Implementations

impl CoordinateUnit

pub fn from_primitive(prim: u32) -> Option<CoordinateUnit>

pub fn from_primitive_allow_unknown(prim: u32) -> CoordinateUnit

pub fn unknown() -> CoordinateUnit

pub const fn into_primitive(self) -> u32

pub fn is_unknown(&self) -> bool

Trait Implementations

impl Clone for CoordinateUnit

fn clone(&self) -> CoordinateUnit

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for CoordinateUnit

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

Formats the value using the given formatter.

impl<D> Decode<CoordinateUnit, D> for CoordinateUnit

where D: ResourceDialect,

fn new_empty() -> CoordinateUnit

Creates a valid instance of Self. The specific value does not matter, since it will be overwritten by decode.

unsafe fn decode( &mut self, decoder: &mut Decoder<'_, D>, offset: usize, _depth: Depth, ) -> Result<(), Error>

Decodes an object of type T from the decoder’s buffers into self.

impl<D> Encode<CoordinateUnit, D> for CoordinateUnit

where D: ResourceDialect,

unsafe fn encode( self, encoder: &mut Encoder<'_, D>, offset: usize, _depth: Depth, ) -> Result<(), Error>

Encodes the object into the encoder’s buffers. Any handles stored in the object are swapped for Handle::INVALID.

impl Hash for CoordinateUnit

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 Ord for CoordinateUnit

fn cmp(&self, other: &CoordinateUnit) -> 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 CoordinateUnit

fn eq(&self, other: &CoordinateUnit) -> 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 PartialOrd for CoordinateUnit

fn partial_cmp(&self, other: &CoordinateUnit) -> 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 TypeMarker for CoordinateUnit

type Owned = CoordinateUnit

The owned Rust type which this FIDL type decodes into.

fn inline_align(_context: Context) -> usize

Returns the minimum required alignment of the inline portion of the encoded object. It must be a (nonzero) power of two.

fn inline_size(_context: Context) -> usize

Returns the size of the inline portion of the encoded object, including padding for alignment. Must be a multiple of inline_align.

fn encode_is_copy() -> bool

Returns true if the memory layout of Self::Owned matches the FIDL wire format and encoding requires no validation. When true, we can optimize encoding arrays and vectors of Self::Owned to a single memcpy.

fn decode_is_copy() -> bool

Returns true if the memory layout of Self::Owned matches the FIDL wire format and decoding requires no validation. When true, we can optimize decoding arrays and vectors of Self::Owned to a single memcpy.

impl ValueTypeMarker for CoordinateUnit

type Borrowed<'a> = CoordinateUnit

The Rust type to use for encoding. This is a particular Encode<Self> type cheaply obtainable from &Self::Owned. There are three cases:

fn borrow( value: &<CoordinateUnit as TypeMarker>::Owned, ) -> <CoordinateUnit as ValueTypeMarker>::Borrowed<'_>

Cheaply converts from &Self::Owned to Self::Borrowed.

impl Copy for CoordinateUnit

impl Eq for CoordinateUnit

impl StructuralPartialEq for CoordinateUnit