Enum ScrollDelta 

pub enum ScrollDelta {
    Pixels(Point<Pixels>),
    Lines(Point<f32>),
}

The scroll delta for a scroll wheel event.

Variants

Pixels(Point<Pixels>)

An exact scroll delta in pixels.

Lines(Point<f32>)

An inexact scroll delta in lines.

Implementations

impl ScrollDelta

pub fn precise(&self) -> bool

Returns true if this is a precise scroll delta in pixels.

pub fn pixel_delta(&self, line_height: Pixels) -> Point<Pixels>

Converts this scroll event into exact pixels.

pub fn coalesce(self, other: ScrollDelta) -> ScrollDelta

Combines two scroll deltas into one. If the signs of the deltas are the same (both positive or both negative), the deltas are added together. If the signs are opposite, the second delta (other) is used, effectively overriding the first delta.

Trait Implementations

impl Clone for ScrollDelta

fn clone(&self) -> ScrollDelta

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ScrollDelta

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

Formats the value using the given formatter.

impl Default for ScrollDelta

fn default() -> Self

Returns the “default value” for a type.

impl Copy for ScrollDelta