Enum ScrollBarVisibility 

pub enum ScrollBarVisibility {
    AlwaysVisible,
    VisibleWhenNeeded,
    AlwaysHidden,
}

How the scrollbar is shown. Matches egui’s ScrollBarVisibility.

Hover-only behaviour is controlled by ScrollBarKind::Floating on the ScrollBarStyle, not by this enum — a Floating bar with VisibleWhenNeeded only appears on hover; a Solid bar with VisibleWhenNeeded is always visible when content overflows.

Variants

AlwaysVisible

Paint whenever content overflows, regardless of hover.

VisibleWhenNeeded

Paint when content overflows. If the style is Floating the bar additionally hides until the cursor enters the hover zone.

AlwaysHidden

Never paint — wheel/drag still work, but no visual indicator.

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 Debug for ScrollBarVisibility

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

Formats the value using the given formatter.

impl Default for ScrollBarVisibility

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for ScrollBarVisibility

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for ScrollBarVisibility

impl Eq for ScrollBarVisibility

impl StructuralPartialEq for ScrollBarVisibility