Enum WheelDeltaMode 

pub enum WheelDeltaMode {
    Pixel,
    Line,
    Page,
}

How a platform expressed its wheel delta. The discriminants match the DOM’s WheelEvent.deltaMode, so a web shell can convert with WheelDeltaMode::from_dom.

Variants

Pixel

Pixels — a precision device (trackpad, smooth wheel) or a browser that reports even a classic wheel this way (~100 px per notch).

Line

Lines. One line is one notch: this is what a classic wheel step means, and what winit’s LineDelta already carries.

Page

Pages.

Implementations

impl WheelDeltaMode

pub fn from_dom(delta_mode: u32) -> WheelDeltaMode

DOM WheelEvent.deltaMode → this enum. Unknown values are treated as pixels, which is what every browser in practice reports.

Trait Implementations

impl Clone for WheelDeltaMode

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 WheelDeltaMode

impl Debug for WheelDeltaMode

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

Formats the value using the given formatter.

impl Eq for WheelDeltaMode

impl PartialEq for WheelDeltaMode

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for WheelDeltaMode