LineSeries class

Configuration of one line series.

Data can be supplied inline via data (static charts) or fed through the chart controller (setSeriesData/appendPoints/prependPoints and lazy loading) when data is null.

Inheritance
Annotations

Constructors

LineSeries({required String id, List<ChartPoint>? data, Color color = const Color(0xFF2196F3), ChartColorScale? colorScale, double strokeWidth = 2.0, StrokeCap strokeCap = StrokeCap.round, PointMarker? marker, PointMarker? endMarker, GapPolicy gapPolicy = GapPolicy.break_, LineCurve curve = LineCurve.straight, LineSeriesFill? fill, List<double>? dashArray, Gradient? strokeGradient})
const

Properties

color → Color
Stroke color when no colorScale is set.
final
colorScale → ChartColorScale?
Value-dependent stroke coloring (overrides color); see ChartColorScale.
final
curve → LineCurve
How points are connected; LineCurve.straight by default.
final
dashArray → List<double>?
Stroke dash pattern (on/off pixel lengths, cycled); null (default) = solid. Applies only to the stroke, not the fill. See dashPath.
final
data → List<ChartPoint>?
Inline data; kept in x-ascending order internally. Null when data is fed through the controller (live/lazy charts).
finalinherited
endMarker → PointMarker?
Marker drawn ONLY at the last non-gap point (e.g. an endpoint badge); null (default) = none. Independent of marker (which draws on every point).
final
fill → LineSeriesFill?
Optional below-line area fill; null (default) paints no fill.
final
gapPolicy → GapPolicy
final
hashCode → int
The hash code for this object.
no setterinherited
id → String
Identifies the series in the controller's data store.
finalinherited
marker → PointMarker?
Marker drawn on every non-gap data point.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
strokeCap → StrokeCap
final
strokeGradient → Gradient?
Position-space stroke gradient, mapped over the series' non-gap spot bounding box. Overrides colorScale/color. Null (default) = none. See boundsOf.
final
strokeWidth → double
final

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
paint(ChartPaintContext context, SeriesRenderSnapshot snapshot) → void
Paints the series' visible slice, after behind-series decorations and before above-series decorations, in the order series are listed. May publish paint products on snapshot (see SeriesRenderSnapshot.geometry) for decorations painted above.
override
paintOutsidePlot(ChartPaintContext context, SeriesRenderSnapshot snapshot) → void
A second paint pass, running after every series and decoration has painted — e.g. an endpoint badge that must sit above other series, not just above its own. Default: nothing.
override
pixelOverhang(ResolvedAxis xAxis) → double
Extra horizontal reach of this series' marks beyond their x value, in pixels. A point-like series (a line) reaches 0; a wide mark (a bar) reaches half its width plus any horizontal offset. The chart widens the visible data slice by this much (converted to domain units through the x axis) so an edge mark stays painted while scrolling instead of popping in and out when its anchor crosses the viewport edge.
inherited
snap(SnapContext context) → SnappedPoint?
The point this series snaps to for a pointer at SnapContext.pixelX — what the trackball pins and hit callbacks report. Null opts the series out of the query.
inherited
toString() → String
A string representation of this object.
inherited
trackballMarkerColor(ChartPoint point) → Color?
Color for the default trackball marker snapped to point; null uses TrackballBehavior.lineColor. Default: null.
override

Operators

operator ==(Object other) → bool
The equality operator.
inherited