Struct ListSlice 

pub struct ListSlice { /* private fields */ }

One frame’s slicing of a variable-height list, between the reading and the rows: which rows to measure, and — once they are — where the window lands and what to build. Made by RowHeights::slice; see list for the loop that drives it, which every binding’s port repeats.

Implementations

impl ListSlice

pub fn width(&self) -> f32

The content width the rows are measured at.

pub fn unmeasured(&self, heights: &RowHeights) -> Vec<usize>

The rows of the current range nothing has measured: measure each, RowHeights::set it, then Self::reslice. Empty is done.

pub fn reslice(&mut self, heights: &mut RowHeights) -> bool

After measuring: puts the anchor row back where it was and slices again. Measuring moved the numbers the slice was taken from — this row’s own, the rows above it, and (through the mean) every row nobody has measured at all — so what is under the pointer would otherwise slide out from under it. True when the range moved and its new rows want measuring, within the pass budget.

pub fn finish(self, heights: &mut RowHeights) -> ListPlan

The rows to build, the spacers, and the correction.

Trait Implementations

impl Clone for ListSlice

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ListSlice

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

Formats the value using the given formatter.