Enum VirtualListMeasureMode 

pub enum VirtualListMeasureMode {
    Measured,
    Fixed,
    Known,
}

Variants

Measured

Performs a measurement pass for all visible items and updates the virtualizer with the measured sizes. Correct for variable-height items.

Fixed

Skips the measurement pass and assumes all items have the estimated size. Intended for fixed-height lists/tables.

Known

Skips the measurement pass and uses caller-provided per-index row heights.

This mode is intended for “known-height” virtualization (e.g. fixed-height rows with occasional deterministic height changes like group headers), where measuring each visible row would be wasted work.

Correctness requires that the provided height function matches the rendered row layout.

Trait Implementations

impl Clone for VirtualListMeasureMode

fn clone(&self) -> VirtualListMeasureMode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for VirtualListMeasureMode

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

Formats the value using the given formatter.

impl PartialEq for VirtualListMeasureMode

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

impl Eq for VirtualListMeasureMode

impl StructuralPartialEq for VirtualListMeasureMode