ChartBarPainter class Null safety

柱状图

Inheritance

Constructors

ChartBarPainter(List<ChartBean>? chartBeans, Color rectColor, {double value = 1, bool isShowX = false, double fontSize = 12, Color? fontColor, bool isCanTouch = false, bool isShowTouchShadow = true, bool isShowTouchValue = false, Color? rectShadowColor, Offset? globalPosition, double rectRadius = 0, double rectRadiusTopLeft = 0, double rectRadiusTopRight = 0, double rectRadiusBottomLeft = 0, double rectRadiusBottomRight = 0})

Properties

chartBeans List<ChartBean>?
read / write
endX double
read / write
endY double
read / write
fontColor Color?
read / write
fontSize double
read / write
globalPosition Offset?
read / write
hashCode int
The hash code for this object.
read-only, inherited
isCanTouch bool
read / write
isShowTouchShadow bool
read / write
isShowTouchValue bool
read / write
isShowX bool
read / write
maxMin List<double>
read / write
rectColor Color
read / write
rectMap Map<Rect, double>
read / write
rectRadius double
read / write
rectRadiusBottomLeft double
read / write
rectRadiusBottomRight double
read / write
rectRadiusTopLeft double
read / write
rectRadiusTopRight double
read / write
rectShadowColor Color?
read / write
rectWidth double
read / write
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
semanticsBuilder SemanticsBuilderCallback?
Returns a function that builds semantic information for the picture drawn by this painter.
read-only, inherited
startX double
read / write
startY double
read / write
value double
read / write

Methods

addListener(VoidCallback listener) → void
Register a closure to be notified when it is time to repaint.
inherited
calculateMaxMin(List<ChartBean>? chatBeans) List<double>
计算极值 最大值,最小值
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 non-existent 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
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 ChartBarPainter 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

Constants

basePadding → const double
16
defaultColor → const Color
Colors.deepPurple
defaultRectPadding → const double
8
defaultRectShadowColor → const Color
Colors.white