Enum Scrollbars 

pub enum Scrollbars {
    Never,
    Always,
}

When a scroll area draws a scrollbar (app.dart:857).

The reference asks this question per platform and answers it no on every touch screen: a finger already knows where it is on the page, and a permanent bar over the content is a desktop affordance for a pointer that cannot feel the edges. Along the horizontal axis the answer is no everywhere, on every platform.

Variants

Never

Never — what a touch screen gets (app.dart:870).

Always

One bar down the inner edge (app.dart:865), for the platforms whose own scroll views have one.

Implementations

impl Scrollbars

pub const fn platform_default() -> Self

What the running platform expects: nothing on a touch screen, a bar on a desktop.

Resolved at compile time from the target, like ScrollPhysics::platform_default beside it — a build is for one platform, and a constant keeps the choice out of the frame loop.

Trait Implementations

impl Clone for Scrollbars

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 Scrollbars

impl Debug for Scrollbars

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

Formats the value using the given formatter.

impl Default for Scrollbars

fn default() -> Self

Returns the “default value” for a type.

impl Eq for Scrollbars

impl PartialEq for Scrollbars

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Scrollbars