ChartLinePainter class

折线图、曲线图

Inheritance

Constructors

ChartLinePainter(List<ChartBean>? chartBeans, Color lineColor, {double lineWidth = 4, double value = 1, bool isCurve = true, bool isShowXy = true, bool isShowYValue = true, bool isShowXyRuler = true, bool isShowHintX = false, bool isShowHintY = false, bool isShowBorderTop = false, bool isShowBorderRight = false, double rulerWidth = 8, List<Color>? shaderColors, Color? xyColor = defaultColor, int? yNum = 5, bool? isShowFloat = false, double? fontSize = 10, Color? fontColor = defaultColor, bool isCanTouch = false, Offset? globalPosition, bool isShowPressedHintLine = true, double pressedPointRadius = 4, double pressedHintLineWidth = 0.5, Color? pressedHintLineColor = defaultColor})

Properties

chartBeans List<ChartBean>?
getter/setter pair
endX double
getter/setter pair
endY double
getter/setter pair
fontColor Color?
getter/setter pair
fontSize double?
getter/setter pair
globalPosition Offset?
getter/setter pair
hashCode int
The hash code for this object.
no setterinherited
isCanTouch bool
getter/setter pair
isCurve bool
getter/setter pair
isShowBorderRight bool
getter/setter pair
isShowBorderTop bool
getter/setter pair
isShowFloat bool?
getter/setter pair
isShowHintX bool
getter/setter pair
isShowHintY bool
getter/setter pair
isShowPressedHintLine bool
getter/setter pair
isShowXy bool
getter/setter pair
isShowXyRuler bool
getter/setter pair
isShowYValue bool
getter/setter pair
lineColor Color
getter/setter pair
lineWidth double
getter/setter pair
maxMin List<double>
getter/setter pair
path Path?
getter/setter pair
pressedHintLineColor Color?
getter/setter pair
pressedHintLineWidth double
getter/setter pair
pressedPointRadius double
getter/setter pair
rulerWidth double
getter/setter pair
runtimeType Type
A representation of the runtime type of the object.
no setterinherited
semanticsBuilder SemanticsBuilderCallback?
Returns a function that builds semantic information for the picture drawn by this painter.
no setterinherited
shaderColors List<Color>?
getter/setter pair
startX double
getter/setter pair
startY double
getter/setter pair
value double
getter/setter pair
xyColor Color?
getter/setter pair
yNum int?
getter/setter pair

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
drawRuler(Canvas canvas, Paint paint) → void
x,y轴刻度 & 辅助线
hitTest(Offset position) bool?
Called whenever a hit test is being performed on an object that is using this custom paint delegate.
inherited
initBorder(Size size) → void
计算边界
initPath(Size size) → void
计算Path
initValue() → void
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
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 ChartLinePainter 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

defaultColor → const Color