Struct ScrollState 

pub struct ScrollState {
    pub offset: usize,
    pub page_size: usize,
}

Scroll offset tracker for content rendered via ScrollView.

Tracks offset (current scroll position) and a cached page_size (visible rows). All navigation methods clamp automatically.

Fields

offset: usize

Current scroll offset (first visible row)

page_size: usize

Cached page size (visible rows in the viewport)

Implementations

impl ScrollState

pub fn new() -> Self

Create a new scroll state at position 0.

pub fn scroll_up(&mut self)

Scroll up by one row.

pub fn scroll_down(&mut self, content_len: usize)

Scroll down by one row, clamped to content_len.

pub fn to_top(&mut self)

Jump to the top.

pub fn to_bottom(&mut self, content_len: usize)

Jump to the bottom, clamped to content_len.

pub fn page_up(&mut self)

Scroll up by one page.

pub fn page_down(&mut self, content_len: usize)

Scroll down by one page, clamped to content_len.

pub fn handle_scroll_key(&mut self, key: KeyCode, content_len: usize) -> bool

Handle standard scroll keys (j/k, arrows, g/G, Home/End, PageUp/PageDown).

Returns true if the key was consumed.

pub fn reset(&mut self)

Reset to initial state.

Trait Implementations

impl Clone for ScrollState

fn clone(&self) -> ScrollState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

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.