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

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.
finalinherited
animationDuration double
Duration of the series animation. It takes millisecond value as input.
finalinherited
borderGradient LinearGradient?
Fills the border of the chart series with gradient color.
finalinherited
borderWidth double
Border width of the series.
finalinherited
color Color?
Color of the series.
finalinherited
dashArray List<double>?
Dashes of the series.
finalinherited
dataLabelMapper ChartValueMapper<T, String>?
Field in the data source, which is considered as text for the data points.
finalinherited
dataLabelSettings DataLabelSettings
Customizes the data labels in a series. Data label is a text, which displays the details about the data point.
finalinherited
dataSource List<T>?
Data required for rendering the series. If no data source is specified, empty chart will be rendered without series.
finalinherited
emptyPointSettings EmptyPointSettings
Customizes the empty points, i.e. null data points in a series.
finalinherited
enableTooltip bool
Enables or disables the tooltip for this series. Tooltip will display more details about data points when tapping the data point region.
finalinherited
gradient LinearGradient?
Fills the chart series with gradient color.
finalinherited
hashCode int
The hash code for this object.
no setterinherited
initialIsVisible bool
Visibility of the series, which applies only during load time.
finalinherited
initialSelectedDataIndexes List<int>?
List of data indexes to initially be selected.
finalinherited
isVisibleInLegend bool
Toggles the visibility of the legend item of this specific series in the legend.
finalinherited
key Key?
Controls how one widget replaces another widget in the tree.
finalinherited
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.
finalinherited
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.
finalinherited
markerSettings MarkerSettings
Indication of data points.
finalinherited
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.
finalinherited
onCreateRenderer ChartSeriesRendererFactory<T, D>?
Used to create the renderer for custom series.
finalinherited
onCreateShader CartesianShaderCallback?
Fills the data points with the gradient and image shaders.
finalinherited
onPointDoubleTap ChartPointInteractionCallback?
Called when double tapped on the chart data point.
finalinherited
onPointLongPress ChartPointInteractionCallback?
Called when long pressed on the chart data point.
finalinherited
onPointTap ChartPointInteractionCallback?
Called when tapped on the chart data point.
finalinherited
onRendererCreated SeriesRendererCreatedCallback<T, D>?
Triggers when the series renderer is created.
finalinherited
opacity double
Opacity of the series. The value ranges from 0 to 1.
finalinherited
pointColorMapper ChartValueMapper<T, Color>?
Field in the data source, which is considered as fill color for the data points.
finalinherited
positions List<ChartDataPointType>
no setterinherited
runtimeType Type
A representation of the runtime type of the object.
no setterinherited
selectionBehavior SelectionBehavior?
Customizes the data points or series on selection.
finalinherited
slots Iterable<SeriesSlot>
Returns a list of all available slots.
no setterinherited
sortFieldValueMapper ChartValueMapper<T, dynamic>?
Field in the data source, which is considered for sorting the data points.
finalinherited
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.
finalinherited
trendlines List<Trendline>?
Customizes the trendlines.
finalinherited
xAxisName String?
Name of the x-axis to bind the series.
finalinherited
xValueMapper ChartValueMapper<T, D>?
Field in the data source, which is considered as x-value.
finalinherited
yAxisName String?
Name of the y-axis to bind the series.
finalinherited
yValueMapper ChartValueMapper<T, num>?
Field in the data source, which is considered as y-value.
finalinherited

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