ItemOptions class abstract

Options for chart items. You can use this subclasses: BarItemOptions, BubbleItemOptions, WidgetItemOptions

Required itemBuilder parameter is used to provide a data for each item on the chart.

Required geometryPainter specifies how to draw these items on the chart.

Extend this to make your custom options or painters if needed.

WidgetItemOptions is only ItemOptions that is not using geometryPainter and instead is passing _EmptyGeometryPainter as the painter, and defaulting all other values to 0.0.

Implementers

Constructors

ItemOptions({required ChartGeometryPainter geometryPainter, EdgeInsets padding = EdgeInsets.zero, EdgeInsets multiValuePadding = EdgeInsets.zero, double? maxBarWidth, double? minBarWidth, double startPosition = 0.5, required ItemBuilder itemBuilder})
Default constructor for ItemOptions It's recommended to make/use custom item options for custom painters.
const

Properties

geometryPainter → ChartGeometryPainter
Geometry
final
hashCode → int
The hash code for this object.
no setterinherited
itemBuilder → ItemBuilder
final
maxBarWidth → double?
Max width of item in the chart
final
minBarWidth → double?
Min width of item in the chart
final
multiValuePadding → EdgeInsets
Multi value chart padding, this will group values with same index from different lists use to make space between index changes in multi value charts Only used for multiple data lists when they are not stacked
final
padding → EdgeInsets
Item padding, if minBarWidth and padding are more then available space padding will get ignored
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
startPosition → double
Set start position. This value ranges from 0.0 - 1.0.
final

Methods

animateTo(ItemOptions endValue, double t) → ItemOptions
Animate to next ItemOptions state When making custom ItemOptions make sure to override this return custom painter with all available options, otherwise changes in options won't be animated
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited

Operators

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