Struct zng_app::window::MonitorId

pub struct MonitorId(/* private fields */);

Unique identifier of a monitor screen.

Memory

The internal number is a NonZeroU32, that means that Option<MonitorId> and MonitorId are the same size as u32.

As Hash

The generated internal number has good statistical distribution and can be used as its own hash, although it is not cryptographically safe, as it is simply a sequential counter scrambled using a modified splitmix64.

Static

The unique ID cannot be generated at compile time, but you can use the static_id! macro to declare a lazy static that instantiates the ID.

Implementations

impl MonitorId

pub fn new_unique() -> Self

Generates a new unique ID.

pub fn get(self) -> u32

Retrieve the underlying value.

pub fn sequential(self) -> u32

Un-scramble the underlying value to get the original sequential count number.

If two IDs, id0 and id1 where generated by the same thread then id0.sequential() < id1.sequential().

pub fn from_raw(raw: u32) -> Self

Creates an ID from a raw value.

The value must not be zero, panics if it is, the value must have been provided by get otherwise the ID will not be unique.

pub fn from_sequential(num: u32) -> Self

Creates an ID from a sequential number.

Safety

The value must not be zero, panics if it is, the value must have been provided by sequential otherwise the ID will not be unique.

impl MonitorId

pub fn fallback() -> MonitorId

ID of a fake monitor for cases where no monitor is available.

Trait Implementations

impl Clone for MonitorId

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for MonitorId

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

Formats the value using the given formatter.

impl Display for MonitorId

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

Formats the value using the given formatter.

impl Hash for MonitorId

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 MonitorId

fn eq(&self, other: &Self) -> 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 UniqueId for MonitorId

fn new_unique() -> Self

New unique ID.

impl Copy for MonitorId

impl Eq for MonitorId

impl NoUninit for MonitorId

impl PodInOption for MonitorId

impl ZeroableInOption for MonitorId