PrismSparkline class

A tiny inline trend line for lists, tables and stat cards.

Draws the values as a polyline in the ambient primary colour (or color/semantic if given), with an optional gradient fill underneath. Deliberately label-free — pass a semanticLabel so screen readers get the trend in words instead.

PrismSparkline(values: weekRevenue, semantic: PrismSemantic.success)
Inheritance

Constructors

PrismSparkline({Key? key, required List<double> values, double width = 96, double height = 28, Color? color, PrismSemantic? semantic, bool fill = true, double strokeWidth = 2, String? semanticLabel})
Creates a sparkline. Requires at least two values.
const

Properties

color → Color?
Stroke colour; defaults to the role colour from semantic, then the ambient primary.
final
fill → bool
Whether to draw a gradient fill under the line.
final
hashCode → int
The hash code for this object.
no setterinherited
height → double
Rendered height.
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
semantic → PrismSemantic?
Semantic role picking the stroke colour when color is null.
final
semanticLabel → String?
Screen-reader description of the trend, e.g. "Trending up 12% this week".
final
strokeWidth → double
Line thickness.
final
values → List<double>
The data to plot, in order. Deltas are drawn left-to-right.
final
width → double
Rendered width.
final

Methods

build(BuildContext context) → Widget
Describes the part of the user interface represented by this widget.
override
createElement() → StatelessElement
Creates a StatelessElement to manage this widget's location in the tree.
inherited
debugDescribeChildren() → List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children.
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
inherited
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) → String
A string representation of this object.
inherited
toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug, int wrapWidth = 65}) → String
Returns a string representation of this node and its descendants.
inherited
toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String
Returns a one-line detailed description of the object.
inherited
toStringShort() → String
A short, textual description of this widget.
inherited

Operators

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