RadarChartPainter class - radar_chart_painter library

Constructors

RadarChartPainter({required ChartTheme theme, required List<RadarDataSet> radarDataSets, double maxValue = 100.0, int gridLevels = 5, double animationProgress = 1.0, ChartInteractionResult? selectedPoint, bool showGrid = true, bool showAxis = true, bool showLabel = true}): Creates a radar chart painter.
const

Properties

animationProgress → double: The animation progress value between 0.0 and 1.0.
final
dataSets → List<ChartDataSet>: The data sets to render in the chart.
finalinherited
gridLevels → int: The number of grid levels to display.
final
hashCode → int: The hash code for this object.
no setterinherited
maxValue → double: The maximum value for the radar axes.
final
radarDataSets → List<RadarDataSet>: The list of radar data sets.
final
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
selectedPoint → ChartInteractionResult?: The currently selected point interaction result.
final
semanticsBuilder → SemanticsBuilderCallback?: Returns a function that builds semantic information for the picture drawn by this painter.
no setterinherited
showAxis → bool: Whether to show axis lines.
finalinherited
showGrid → bool: Whether to show grid lines.
finalinherited
showLabel → bool: Whether to show axis labels.
finalinherited
theme → ChartTheme: The theme to use for styling the chart.
finalinherited

Methods

addListener(VoidCallback listener) → void: Register a closure to be notified when it is time to repaint.
inherited
drawAxes(Canvas canvas, Size size, double minX, double maxX, double minY, double maxY) → void: Draw axis lines.
inherited
drawAxisLabels(Canvas canvas, Size size, double minX, double maxX, double minY, double maxY, {List<ChartDataSet>? dataSets}) → void: Draw axis labels (optimized with text style caching).
inherited
drawGrid(Canvas canvas, Size size, double minX, double maxX, double minY, double maxY) → void: Draw grid lines (optimized with batched operations).
inherited
getDataBounds(double getValue(ChartDataPoint), double combine(double, double)) → void: Get data bounds (to be overridden by subclasses).
inherited
getNiceMaxY(double maxY, {int targetIntervals = 5}) → double: Helper to calculate a "nice" maximum Y value for axis scaling.
inherited
hitTest(Offset position) → bool?: Called whenever a hit test is being performed on an object that is using this custom paint delegate.
inherited
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
paint(Canvas canvas, Size size) → void: Called whenever the object needs to paint. The given Canvas has its coordinate space configured such that the origin is at the top left of the box. The area of the box is the size of the size argument.
override
pointToCanvas(ChartDataPoint point, Size size, double minX, double maxX, double minY, double maxY) → Offset: Convert data point to canvas coordinates (optimized).
inherited
removeListener(VoidCallback listener) → void: Remove a previously registered closure from the list of closures that the object notifies when it is time to repaint.
inherited
shouldRebuildSemantics(covariant CustomPainter oldDelegate) → bool: Called whenever a new instance of the custom painter delegate class is provided to the RenderCustomPaint object, or any time that a new CustomPaint object is created with a new instance of the custom painter delegate class (which amounts to the same thing, because the latter is implemented in terms of the former).
inherited
shouldRepaint(covariant RadarChartPainter oldDelegate) → bool: Called whenever a new instance of the custom painter delegate class is provided to the RenderCustomPaint object, or any time that a new CustomPaint object is created with a new instance of the custom painter delegate class (which amounts to the same thing, because the latter is implemented in terms of the former).
override
toString() → String: A string representation of this object.
inherited

Operators

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