Struct BackendDeviceKey 

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

An opaque per-device key, derived by the platform layer from the backend’s own device handle (winit’s DeviceId, a Win32 HANDLE, an evdev node).

Two different devices can report the same OS-level contact id at the same time — two touchscreens, or a touchscreen and a digitizer — so the allocator’s live table is keyed on (device, os_id) rather than os_id alone. Teksilo never interprets the value; it only needs it to be stable for the life of a device and distinct between devices.

Implementations

impl BackendDeviceKey

pub const DEFAULT: Self

The key a backend with no device concept uses (a single-touchscreen platform, a test harness).

pub const fn new(raw: u64) -> Self

Wrap a backend-derived value.

pub const fn get(self) -> u64

The wrapped value.

Trait Implementations

impl Clone for BackendDeviceKey

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 BackendDeviceKey

impl Debug for BackendDeviceKey

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

Formats the value using the given formatter.

impl Default for BackendDeviceKey

fn default() -> Self

Returns the “default value” for a type.

impl Eq for BackendDeviceKey

impl Hash for BackendDeviceKey

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 BackendDeviceKey

fn cmp(&self, other: &Self) -> 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.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for BackendDeviceKey

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for BackendDeviceKey

fn partial_cmp(&self, other: &Self) -> 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 BackendDeviceKey