Struct DpiCapabilities 

pub struct DpiCapabilities { /* private fields */ }

Supported DPI values reported by a device’s HID++ AdjustableDpi feature.

Implementations

impl DpiCapabilities

pub fn new(values: Vec<u16>) -> Result<Self, WriteError>

Build capabilities from a device-reported DPI list. Values are sorted and deduplicated so callers can rely on stable ordering.

pub fn values(&self) -> &[u16]

All supported DPI values, sorted ascending.

pub fn min(&self) -> u16

Minimum supported DPI.

pub fn max(&self) -> u16

Maximum supported DPI.

pub fn contains(&self, dpi: u16) -> bool

Whether dpi is exactly supported by the device.

pub fn nearest(&self, dpi: u32) -> u16

The supported DPI nearest to dpi.

pub fn snap(&self, dpi: u32) -> u32

Snap dpi to the nearest supported value, widened to u32 for UI math. The single home for “round a DPI onto this device’s grid” — callers that hold an Option<DpiCapabilities> should map_or(dpi, |c| c.snap(dpi)).

pub fn step_hint(&self) -> u16

Best-effort step size for UI widgets that need a single increment. Returns the smallest positive gap between adjacent reported values.

pub fn adjacent_test_target(&self, current: u16) -> Option<u16>

A supported value different from current, for diagnostic write tests.

Trait Implementations

impl Clone for DpiCapabilities

fn clone(&self) -> DpiCapabilities

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DpiCapabilities

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for DpiCapabilities

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for DpiCapabilities

impl PartialEq for DpiCapabilities

fn eq(&self, other: &DpiCapabilities) -> 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 Serialize for DpiCapabilities

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for DpiCapabilities