FastLineSeries<T, D> class

Renders the FastLineSeries.

FastLineSeries is a line chart, but it loads faster than LineSeries.

You can use this when there are large number of points to be loaded in a chart. To render a fast line chart, create an instance of FastLineSeries, and add it to the series collection property of SfCartesianChart.

The following properties are used to customize the appearance of fast line segment:

• color - Changes the color of the line.
• opacity - Controls the transparency of the chart series.
• width - Changes the stroke width of the line.

Inheritance

• Object
• DiagnosticableTree
• Widget
• RenderObjectWidget
• SlottedMultiChildRenderObjectWidget<SeriesSlot, RenderObject>
• ChartSeries<T, D>
• CartesianSeries<T, D>
• XyDataSeries<T, D>
• FastLineSeries

Constructors

FastLineSeries({ValueKey<String>? key, ChartSeriesRendererFactory<T, D>? onCreateRenderer, List<T>? dataSource, required ChartValueMapper<T, D>? xValueMapper, required ChartValueMapper<T, num>? yValueMapper, ChartValueMapper<T, dynamic>? sortFieldValueMapper, ChartValueMapper<T, String>? dataLabelMapper, String? xAxisName, String? yAxisName, Color? color, double width = 2, List<double>? dashArray, LinearGradient? gradient, MarkerSettings markerSettings = const MarkerSettings(), EmptyPointSettings emptyPointSettings = const EmptyPointSettings(), List<Trendline>? trendlines, DataLabelSettings dataLabelSettings = const DataLabelSettings(), SortingOrder sortingOrder = SortingOrder.none, bool initialIsVisible = true, String? name, bool enableTooltip = true, double animationDuration = 1500, SelectionBehavior? selectionBehavior, bool isVisibleInLegend = true, LegendIconType legendIconType = LegendIconType.seriesType, String? legendItemText, double opacity = 1.0, double animationDelay = 0, SeriesRendererCreatedCallback<T, D>? onRendererCreated, ChartPointInteractionCallback? onPointTap, ChartPointInteractionCallback? onPointDoubleTap, ChartPointInteractionCallback? onPointLongPress, CartesianShaderCallback? onCreateShader})

Creating an argument constructor of FastLineSeries class.

const

Properties

animationDelay → double

Delay duration of the series animation.It takes a millisecond value as input. By default, the series will get animated for the specified duration. If animationDelay is specified, then the series will begin to animate after the specified duration.

final, inherited

animationDuration → double

Duration of the series animation. It takes millisecond value as input.

final, inherited

borderGradient → LinearGradient?

Fills the border of the chart series with gradient color.

final, inherited

borderWidth → double

Border width of the series.

final, inherited

color → Color?

Color of the series.

final, inherited

dashArray → List<double>?

Dashes of the series.

final, inherited

dataLabelMapper → ChartValueMapper<T, String>?

Field in the data source, which is considered as text for the data points.

final, inherited

dataLabelSettings → DataLabelSettings

Customizes the data labels in a series. Data label is a text, which displays the details about the data point.

final, inherited

dataSource → List<T>?

Data required for rendering the series. If no data source is specified, empty chart will be rendered without series.

final, inherited

emptyPointSettings → EmptyPointSettings

Customizes the empty points, i.e. null data points in a series.

final, inherited

enableTooltip → bool

Enables or disables the tooltip for this series. Tooltip will display more details about data points when tapping the data point region.

final, inherited

gradient → LinearGradient?

Fills the chart series with gradient color.

final, inherited

hashCode → int

The hash code for this object.

no setter, inherited

initialIsVisible → bool

Visibility of the series, which applies only during load time.

final, inherited

initialSelectedDataIndexes → List<int>?

List of data indexes to initially be selected.

final, inherited

isVisibleInLegend → bool

Toggles the visibility of the legend item of this specific series in the legend.

final, inherited

key → Key?

Controls how one widget replaces another widget in the tree.

final, inherited

legendIconType → LegendIconType

Shape of the legend icon. Any shape in the LegendIconType can be applied to this property. By default, icon will be rendered based on the type of the series.

final, inherited

legendItemText → String?

Text to be displayed in legend. By default, the series name will be displayed in the legend. You can change this by setting values to this property.

final, inherited

markerSettings → MarkerSettings

Indication of data points.

final, inherited

name → String?

Name of the series. The name will be displayed in legend item by default. If name is not specified for the series, then the current series index with ‘series’ text prefix will be considered as series name.

final, inherited

onCreateRenderer → ChartSeriesRendererFactory<T, D>?

Used to create the renderer for custom series.

final, inherited

onCreateShader → CartesianShaderCallback?

Fills the data points with the gradient and image shaders.

final, inherited

onPointDoubleTap → ChartPointInteractionCallback?

Called when double tapped on the chart data point.

final, inherited

onPointLongPress → ChartPointInteractionCallback?

Called when long pressed on the chart data point.

final, inherited

onPointTap → ChartPointInteractionCallback?

Called when tapped on the chart data point.

final, inherited

onRendererCreated → SeriesRendererCreatedCallback<T, D>?

Triggers when the series renderer is created.

final, inherited

opacity → double

Opacity of the series. The value ranges from 0 to 1.

final, inherited

pointColorMapper → ChartValueMapper<T, Color>?

Field in the data source, which is considered as fill color for the data points.

final, inherited

positions → List<ChartDataPointType>

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

selectionBehavior → SelectionBehavior?

Customizes the data points or series on selection.

final, inherited

slots → Iterable<SeriesSlot>

Returns a list of all available slots.

no setter, inherited

sortFieldValueMapper → ChartValueMapper<T, dynamic>?

Field in the data source, which is considered for sorting the data points.

final, inherited

sortingOrder → SortingOrder

The data points in the series can be sorted in ascending or descending order. The data points will be rendered in the specified order if it is set to none.

final, inherited

trendlines → List<Trendline>?

Customizes the trendlines.

final, inherited

xAxisName → String?

Name of the x-axis to bind the series.

final, inherited

xValueMapper → ChartValueMapper<T, D>?

Field in the data source, which is considered as x-value.

final, inherited

yAxisName → String?

Name of the y-axis to bind the series.

final, inherited

yValueMapper → ChartValueMapper<T, num>?

Field in the data source, which is considered as y-value.

final, inherited

Methods

childForSlot(SeriesSlot slot) → Widget?

Returns the widget that is currently occupying the provided slot.

inherited

createElement() → SlottedRenderObjectElement<SeriesSlot, RenderObject>

RenderObjectWidgets always inflate to a RenderObjectElement subclass.

inherited

createRenderer() → FastLineSeriesRenderer<T, D>

Create the fastline series renderer.

override

createRenderObject(BuildContext context) → XyDataSeriesRenderer<T, D>

Creates an instance of the RenderObject class that this RenderObjectWidget represents, using the configuration described by this RenderObjectWidget.

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

didUnmountRenderObject(covariant RenderObject renderObject) → void

A render object previously associated with this widget has been removed from the tree. The given RenderObject will be of the same type as returned by this object's createRenderObject.

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}) → 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

transposed() → bool

inherited

updateRenderObject(BuildContext context, covariant XyDataSeriesRenderer<T, D> renderObject) → void

Copies the configuration described by this RenderObjectWidget to the given RenderObject, which will be of the same type as returned by this object's createRenderObject.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited