DonutChartRenderer class

Draws a list of PieSlices as stroked arcs around a hollow center.

Inheritance

Implemented types

Constructors

DonutChartRenderer({required List<PieSlice> slices, double labelThreshold = 5, double holeRadiusFraction = 0.5}): Creates a renderer for slices, labeling bands at or above labelThreshold percent, with a hollow center of holeRadiusFraction of the outer radius.
const

accessibilityLabel → String: A short label naming the kind of chart, e.g. "Line chart", for semantics.
no setteroverride
accessibilityValue → String: A value summarizing the chart's data — counts, range, a few points.
no setteroverride
hashCode → int: The hash code for this object.
no setterinherited
holeRadiusFraction → double: The hole radius as a fraction of the outer radius (0 = full pie, 1 = ring).
final
labelThreshold → double: Minimum percentage a slice must reach for its % label to be drawn.
final
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
slices → List<PieSlice>: The wedges to draw, in order, sweeping clockwise from 12 o'clock.
final

buildScene(Size size) → ChartScene: Builds the hit-test ChartScene for size. Implementations must derive it from the same math used in ChartRenderer.draw, so the marks line up with the pixels exactly.
override
draw(Canvas canvas, Size size, DrafterThemeColors theme, double progress) → void: Draws the chart. progress is the entrance reveal in 0..1 (1 = fully drawn).
override
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
toString() → String: A string representation of this object.
inherited