Struct ScrollBarStyle 

pub struct ScrollBarStyle {
    pub bar_width: f64,
    pub floating_width: f64,
    pub handle_min_length: f64,
    pub outer_margin: f64,
    pub inner_margin: f64,
    pub content_margin: f64,
    pub margin_same: bool,
    pub kind: ScrollBarKind,
    pub color: ScrollBarColor,
    pub fade_strength: f64,
    pub fade_size: f64,
}

Full scrollbar appearance configuration — mirrors egui’s style.spacing.scroll.

Fields

bar_width: f64

Width of the full-size bar in pixels. This is the bar width when the user is hovering or interacting with it.

floating_width: f64

Thin width shown when the bar is dormant (not hovered, not dragging). Matches egui’s floating_width. On hover the bar grows from this to Self::bar_width. Set equal to bar_width to disable the expand effect. Only takes effect when smaller than bar_width.

handle_min_length: f64

Minimum length of the draggable thumb.

outer_margin: f64

Space between the bar and the panel’s outer edge.

inner_margin: f64

Space between the bar and the content area.

content_margin: f64

Space between sibling content and the bar area (applied when kind = Solid and as a decorative inset when Floating).

margin_same: bool

true = use one value for both axes; false = each axis may differ (we keep a single value here for brevity and apply it to both).

kind: ScrollBarKind

Bar kind — Solid reserves space in layout, Floating overlays content.

color: ScrollBarColor

Which colour role the bar uses.

fade_strength: f64

Alpha of the fade-out region along the scroll-axis edges, 0..1.

fade_size: f64

Length of the fade region in pixels at each end.

Implementations

impl ScrollBarStyle

pub fn bar_width_at(&self, t: f64) -> f64

Interpolated bar width for a hover-animation parameter t in [0, 1]. t = 0 returns Self::floating_width (dormant); t = 1 returns Self::bar_width (fully expanded). Clamps floating_width so it never exceeds bar_width, regardless of what the caller set.

ScrollBarKind::Solid bars do not animate width — they always render at bar_width so the “Full bar width” setting takes immediate visible effect. Only ScrollBarKind::Floating bars expand on hover.

impl ScrollBarStyle

pub fn solid() -> Self

Preset matching egui’s ScrollStyle::solid — always-visible bar, solid layout, fills reserved space. Solid bars don’t expand on hover so floating_width equals bar_width.

pub fn thin() -> Self

Preset matching egui’s ScrollStyle::thin — a narrow floating bar that’s always visible at its thin width and expands to full width when hovered. Callers should pair this with ScrollBarVisibility::AlwaysVisible so the dormant thin bar is rendered even when the cursor isn’t over it (the appearance panel’s preset button does this).

pub fn floating() -> Self

Preset matching egui’s ScrollStyle::floating — wide floating overlay with fade gradient at the edges.

Trait Implementations

impl Clone for ScrollBarStyle

fn clone(&self) -> ScrollBarStyle

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ScrollBarStyle

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

Formats the value using the given formatter.

impl Default for ScrollBarStyle

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for ScrollBarStyle

fn eq(&self, other: &ScrollBarStyle) -> 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 ScrollBarStyle

impl StructuralPartialEq for ScrollBarStyle