Enum ScrollSource 

#[non_exhaustive]
pub enum ScrollSource {
    Wheel,
    Trackpad,
    TouchPan,
    Programmatic,
}

What produced a scroll.

Read by a consumer that must treat a precise pixel stream differently from a notched wheel — the classic case being “one wheel notch = one item” versus “follow the trackpad exactly”.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Wheel

A notched mouse wheel. The default.

Trackpad

A precision trackpad or a free-spinning wheel.

TouchPan

A pan gesture synthesised from a direct pointer dragging the content.

Programmatic

The app scrolled itself (a keyboard command, ensure_visible, an animation).

Trait Implementations

impl Clone for ScrollSource

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 ScrollSource

impl Debug for ScrollSource

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

Formats the value using the given formatter.

impl Default for ScrollSource

fn default() -> Self

Returns the “default value” for a type.

impl Eq for ScrollSource

impl Hash for ScrollSource

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ScrollSource

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ScrollSource