NiceRealtimeChart class

Live-updating chart that polls data at regular intervals.

NiceRealtimeChart(
  series: [NiceRealtimeSeries(name: 'CPU', color: Colors.blue)],
  fetchData: () async => [NiceRealtimePoint(time: DateTime.now(), value: Random().nextDouble() * 100)],
  updateInterval: Duration(seconds: 1),
  maxPoints: 60,
)
Inheritance
Available extensions

Constructors

NiceRealtimeChart({Key? key, required List<NiceRealtimeSeries> series, Future<List<NiceRealtimePoint>> fetchData()?, Duration updateInterval = const Duration(seconds: 2), int maxPoints = 60, double height = 250, String? title, bool showGrid = true, bool showLegend = true, String? yAxisLabel, double? minY, double? maxY, bool paused = false})
const

Properties

fetchData → Future<List<NiceRealtimePoint>> Function()?
final
hashCode → int
The hash code for this object.
no setterinherited
height → double
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
maxPoints → int
final
maxY → double?
final
minY → double?
final
paused → bool
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
series → List<NiceRealtimeSeries>
final
showGrid → bool
final
showLegend → bool
final
title → String?
final
updateInterval → Duration
final
yAxisLabel → String?
final

Methods

asFocusable({FocusNode? focusNode, bool autofocus = false}) → Widget

Available on Widget, provided by the NiceAccessibilityExtension extension

Mark this widget as focusable.
asSemanticButton({String? label, VoidCallback? onTap}) → Widget

Available on Widget, provided by the NiceAccessibilityExtension extension

Mark this widget as a button for screen readers.
asSemanticHeading(String label) → Widget

Available on Widget, provided by the NiceAccessibilityExtension extension

Mark this widget as a heading for screen readers.
createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<NiceRealtimeChart>
Creates the mutable state for this widget at a given location in the tree.
override
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
excludeFromSemantics() → Widget

Available on Widget, provided by the NiceAccessibilityExtension extension

Exclude this widget from the semantic tree.
mergeSemantics() → Widget

Available on Widget, provided by the NiceAccessibilityExtension extension

Merge semantics of child widgets.
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
withSemanticLabel(String label) → Widget

Available on Widget, provided by the NiceAccessibilityExtension extension

Add a semantic label to this widget.

Operators

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