Struct ChartWindow 

pub struct ChartWindow<T: 'static> { /* private fields */ }

A “last N points per series” streaming projection over a ChartModel<T>.

See the module documentation for semantics.

Implementations

impl<T: 'static> ChartWindow<T>

pub fn new(source: ChartModel<T>, window_size: usize) -> Self

Wrap source, showing only the last window_size points of every series.

pub fn window_size(&self) -> usize

The configured window size.

pub fn set_window_size(&self, window_size: usize)

Change the window size, rebuilding every series and emitting ChartChange::Reset.

pub fn series_count(&self) -> usize

Number of series (same set as the source).

pub fn series_ids(&self) -> Vec<SeriesId>

The series ids, in the source’s display order.

pub fn point_count(&self, series: SeriesId) -> usize

Number of points currently visible in the window for series.

pub fn with_series<R>( &self, series: SeriesId, f: impl FnOnce(&str, Option<&ColorProp>, bool) -> R, ) -> Option<R>

Access a series’ metadata (delegates straight through to the source). Returns None if series is unknown.

pub fn with_point<R>( &self, series: SeriesId, index: usize, f: impl FnOnce(&ChartDatum<T>) -> R, ) -> Option<R>

Access the point at window-local index within series. Returns None if series is unknown or index is outside the window.

pub fn observe_changes( &self, f: impl Fn(&ChartChange) + 'static, ) -> ObserverHandle

Register an observer for translated window changes. Returns an ObserverHandle — dropping it removes the callback.

pub fn first_changed_index(&self, series: SeriesId) -> Option<usize>

First window-local index of series whose content may differ since the latest translated change. Per-series (chart data is 2-level: series, then points), unlike SortFilterListModel::first_changed_index’s single flat value. None if series is unknown or unaffected yet.

Trait Implementations

impl<T: 'static> Clone for ChartWindow<T>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: 'static> Debug for ChartWindow<T>

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

Formats the value using the given formatter.