Struct ScrollState 

pub struct ScrollState {
    pub offset: usize,
    pub target_offset: usize,
    pub animated_offset: f64,
    pub animation_start: Option<Instant>,
    pub dragging: bool,
    pub drag_offset: f32,
    pub last_activity: Instant,
}

State management for scrolling behavior

Fields

offset: usize

Current scroll position (0 = bottom, showing current content)

target_offset: usize

Target scroll position for smooth animation

animated_offset: f64

Current animated scroll position (interpolated)

animation_start: Option<Instant>

When scroll animation started

dragging: bool

Whether currently dragging the scrollbar

drag_offset: f32

Distance between cursor and thumb top when dragging

last_activity: Instant

Last time scroll input happened (for autohide)

Implementations

impl ScrollState

pub fn new() -> Self

Create a new scroll state

pub fn set_target(&mut self, new_offset: usize) -> bool

Set scroll target and initiate smooth interpolation animation. Returns true if the target actually changed.

pub fn update_animation(&mut self) -> bool

Update smooth scroll animation via interpolation. Returns true if the animation is still in progress.

pub fn clamp_to_scrollback(&mut self, max_scroll: usize)

Clamp scroll offset to available scrollback length

pub fn apply_scroll(&mut self, lines: i32, max_scroll: usize) -> usize

Apply a scroll delta Returns new target offset

Trait Implementations

impl Debug for ScrollState

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

Formats the value using the given formatter.

impl Default for ScrollState

fn default() -> Self

Returns the “default value” for a type.