Struct WebPlatform 

pub struct WebPlatform { /* private fields */ }

Converts browser pointer input into Cranpose pointer events.

Implementations

impl WebPlatform

pub fn new(scale_factor: f64) -> Self

Creates a platform adapter for a canvas with the given device pixel ratio.

pub fn set_scale_factor(&mut self, factor: f64)

Sets the device pixel ratio of the canvas.

Pointer positions are not scaled by it, because browser events use CSS pixels.

pub fn pointer_position(&self, x: f64, y: f64) -> Point

Returns the canvas position x, y as a Point in logical pixels.

Browser events already use CSS pixels, so the position is not scaled.

pub fn pointer_event( &self, kind: PointerEventKind, x: f64, y: f64, ) -> PointerEvent

Builds a pointer event of kind at a canvas position given in CSS pixels.

The event carries the same position as its local and its root position.

Trait Implementations

impl Default for WebPlatform

fn default() -> Self

Returns the “default value” for a type.