Struct VisibleRange 

pub struct VisibleRange {
    pub start: usize,
    pub end: usize,
    pub render_start: usize,
    pub render_end: usize,
    pub offset: f32,
}

Visible range information

Fields

start: usize

First visible item index

end: usize

Last visible item index (exclusive)

render_start: usize

First item to render (including overscan)

render_end: usize

Last item to render (exclusive, including overscan)

offset: f32

Offset for the first rendered item

Implementations

impl VisibleRange

pub fn visible_range(&self) -> Range<usize>

Get range of visible items

pub fn render_range(&self) -> Range<usize>

Get range of items to render

pub fn is_visible(&self, index: usize) -> bool

Check if index is visible

pub fn should_render(&self, index: usize) -> bool

Check if index should be rendered

pub fn visible_count(&self) -> usize

Number of visible items

pub fn render_count(&self) -> usize

Number of items to render

Trait Implementations

impl Clone for VisibleRange

fn clone(&self) -> VisibleRange

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for VisibleRange

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

Formats the value using the given formatter.

impl PartialEq for VisibleRange

fn eq(&self, other: &VisibleRange) -> 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 StructuralPartialEq for VisibleRange