Struct DevicePixelRatio 

pub struct DevicePixelRatio(f32);

How many device pixels one CSS pixel is worth. Never zero or negative: a host that reports one is a host whose canvas would have no pixels.

Tuple Fields

0: f32

Implementations

impl DevicePixelRatio

pub fn new(ratio: f32) -> Self

The ratio, floored at 1 — a host reporting less would shrink the backing store below the diagram.

pub fn of(window: &Window) -> Self

What the window reports right now. It changes as a tab moves between displays or the page is zoomed, so it is read per frame.

Trait Implementations

impl Clone for DevicePixelRatio

fn clone(&self) -> DevicePixelRatio

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DevicePixelRatio

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

Formats the value using the given formatter.

impl From<DevicePixelRatio> for f32

fn from(ratio: DevicePixelRatio) -> Self

Converts to this type from the input type.

impl PartialEq for DevicePixelRatio

fn eq(&self, other: &DevicePixelRatio) -> 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 Copy for DevicePixelRatio

impl StructuralPartialEq for DevicePixelRatio