Enum ScrollDelta 

pub enum ScrollDelta {
    Pixels {
        x: f64,
        y: f64,
    },
    WheelTicks {
        x: f64,
        y: f64,
    },
}

A signed two-axis scroll distance with an explicit unit.

Positive horizontal values scroll right; positive vertical values scroll up. Keeping pixels distinct from standard wheel ticks prevents a smooth scrolling runtime from accidentally interpolating or accumulating unlike quantities.

Variants

Pixels

Pixel-precise scrolling, as reported by continuous macOS wheel events.

Fields

x: f64

Horizontal distance; positive scrolls right.

y: f64

Vertical distance; positive scrolls up.

WheelTicks

Standard wheel ticks. One tick is one detent, represented by 120 high-resolution wheel units on Linux and Windows.

Fields

x: f64

Horizontal distance; positive scrolls right.

y: f64

Vertical distance; positive scrolls up.

Implementations

impl ScrollDelta

pub const fn pixels(x: f64, y: f64) -> Self

Construct a pixel-precise scroll distance.

pub const fn wheel_ticks(x: f64, y: f64) -> Self

Construct a scroll distance in standard wheel ticks.

pub const fn x(self) -> f64

Return the signed horizontal distance in this value’s unit.

pub const fn y(self) -> f64

Return the signed vertical distance in this value’s unit.

pub fn is_finite(self) -> bool

Whether both components are finite numbers suitable for interpolation.

pub const fn negate_y(self) -> Self

Flip the sign of the vertical component, preserving the unit and the horizontal component.

Trait Implementations

impl Clone for ScrollDelta

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 ScrollDelta

impl Debug for ScrollDelta

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

Formats the value using the given formatter.

impl PartialEq for ScrollDelta

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ScrollDelta