Struct ListMetrics 

pub struct ListMetrics {
    pub origin: f64,
    pub item_extent: f64,
    pub gap: f64,
    pub count: usize,
}

Uniform geometry of a reorderable list along the drag axis, in the same (logical, scroll-adjusted) coordinate space as the cursor.

origin is the leading edge of item 0, after any scroll offset — exactly where the first slot paints this frame. Rebuild it each frame from live layout so the insertion index and reflow stay correct while the list scrolls.

Fields

origin: f64

item_extent: f64

gap: f64

count: usize

Implementations

impl ListMetrics

pub fn uniform( origin: f64, item_extent: f64, gap: f64, count: usize, ) -> ListMetrics

pub fn pitch(&self) -> f64

Distance from one slot’s leading edge to the next (item + gap).

pub fn slot_lead(&self, i: usize) -> f64

Leading-edge coordinate of slot boundary i (0..=count): boundary 0 sits before the first item, boundary count after the last.

pub fn insertion_at(&self, axis_coord: f64) -> usize

The insertion boundary (0..=count) nearest axis_coord — snaps to the closest seam by rounding, so the gap flips at the midpoint of each slot.

Trait Implementations

impl Clone for ListMetrics

fn clone(&self) -> ListMetrics

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ListMetrics

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

Formats the value using the given formatter.

impl PartialEq for ListMetrics

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

impl StructuralPartialEq for ListMetrics