Struct Sparkline 

pub struct Sparkline<'a> { /* private fields */ }

A series as bars. None is a gap, never a zero.

Implementations

impl<'a> Sparkline<'a>

pub fn new(values: &'a [Option<f64>], style: Style) -> Self

Bars of values (oldest first) in style.

pub fn min_span(self, span: f64) -> Self

The smallest range the scale shows. A series that moves less than span is drawn around the middle of the chart, so noise reads as a flat line, not as full and empty bars.

pub fn track(self) -> Self

Track mode (#58 market view, J4): the bars fill a ─ track from the left, one cell per run, and scroll when it is full. A bar outside the threshold (above a Max, below a Min) is drawn in the error color; no threshold line is drawn.

pub fn threshold(self, threshold: Option<Threshold>) -> Self

Adds the line of threshold, when there is one.

Trait Implementations

impl Widget for Sparkline<'_>

fn render(self, area: Rect, buf: &mut Buffer)

Draws the current state of the widget in the given buffer. That is the only method required to implement a custom widget.