Enum ScrollbarVisibility 

pub enum ScrollbarVisibility {
    Always,
    WhileScrolling,
    OnHover,
    Hidden,
}

When the scrollbar thumb/track is drawn at all (D-SCROLLBAR-1 — user- reported: during a screen-transition slide, an always-drawn thumb reads as a small opaque box detached from the rest of the sliding UI; fading it away when idle/off-screen sidesteps that entirely, not just on transitions).

Variants

Always

Always visible whenever there’s overflow to scroll.

WhileScrolling

Hidden until a drag, wheel, or momentum-coast gesture is active; fades out shortly after the content settles.

OnHover

Visible while the pointer hovers the track, OR while actively scrolling (falls back to WhileScrolling’s behavior with no mouse — touch/mobile has no hover to trigger on).

Hidden

Never drawn — same effect as ScrollView::no_scrollbar.

Trait Implementations

impl Clone for ScrollbarVisibility

fn clone(&self) -> ScrollbarVisibility

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ScrollbarVisibility

impl Debug for ScrollbarVisibility

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

Formats the value using the given formatter.

impl Default for ScrollbarVisibility

fn default() -> ScrollbarVisibility

Returns the “default value” for a type.

impl Eq for ScrollbarVisibility

impl PartialEq for ScrollbarVisibility

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ScrollbarVisibility