BaseChartPainter class abstract

BaseChartPainter

Inheritance

• Object
• Listenable
• CustomPainter
• BaseChartPainter

Implementers

• ChartPainter

Constructors

BaseChartPainter(KChartStyle chartStyle, {List<KLineEntity>? datas, required double scaleX, required double scrollX, required bool isLongPress, required double selectX, required double xFrontPadding, required BaseDimension baseDimension, bool isOnTap = false, List<MainIndicator> mainIndicators = const [], bool volHidden = false, bool isTapShowInfoDialog = false, List<SecondaryIndicator> secondaryIndicators = const [], bool isLine = false})

constructor BaseChartPainter

Properties

baseDimension → BaseDimension

base dimension

final

chartStyle → KChartStyle

final

datas ↔ List<KLineEntity>?

getter/setter pair

hashCode → int

The hash code for this object.

no setter, inherited

isLine ↔ bool

getter/setter pair

isLongPress ↔ bool

getter/setter pair

isOnTap ↔ bool

getter/setter pair

isTapShowInfoDialog ↔ bool

getter/setter pair

mainIndicators ↔ List<MainIndicator>

getter/setter pair

mBottomPadding ↔ double

getter/setter pair

mChildPadding ↔ double

getter/setter pair

mDataLen ↔ double

getter/setter pair

mDateRect ↔ Rect

getter/setter pair

mDisplayHeight ↔ double

getter/setter pair

mFormats ↔ List<String>

getter/setter pair

mGridColumns ↔ int

getter/setter pair

mGridRows ↔ int

getter/setter pair

mItemCount ↔ int

getter/setter pair

mMainHighMaxValue ↔ double

getter/setter pair

mMainLabelRect ↔ Rect

getter/setter pair

mMainLowMinValue ↔ double

getter/setter pair

mMainMaxIndex ↔ int

getter/setter pair

mMainMaxValue ↔ double

getter/setter pair

mMainMinIndex ↔ int

getter/setter pair

mMainMinValue ↔ double

getter/setter pair

mMainRect ↔ Rect

Rectangle box of main chart

getter/setter pair

mPointWidth ↔ double

getter/setter pair

mSecondaryRectList ↔ List<RenderRect>

Secondary list support

getter/setter pair

mStartIndex ↔ int

getter/setter pair

mStopIndex ↔ int

getter/setter pair

mTopPadding ↔ double

getter/setter pair

mTranslateX ↔ double

getter/setter pair

mVolMaxValue ↔ double

getter/setter pair

mVolMinValue ↔ double

getter/setter pair

mVolRect ↔ Rect?

Rectangle box of the vol chart

getter/setter pair

mWidth ↔ double

getter/setter pair

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

scaleX ↔ double

getter/setter pair

scrollX ↔ double

getter/setter pair

secondaryIndicators ↔ List<SecondaryIndicator>

getter/setter pair

selectX ↔ double

getter/setter pair

semanticsBuilder → SemanticsBuilderCallback?

Returns a function that builds semantic information for the picture drawn by this painter.

no setter, inherited

volHidden ↔ bool

getter/setter pair

xFrontPadding ↔ double

getter/setter pair

Methods

addListener(VoidCallback listener) → void

Register a closure to be notified when it is time to repaint.

inherited

calculateSelectedX(double selectX) → int

calculate the value of x after long pressing and convert to index

calculateValue() → dynamic

calculate values

drawBg(Canvas canvas, Size size) → void

draw the background of chart

drawChart(Canvas canvas, Size size) → void

draw chart

drawCrossLine(Canvas canvas, Size size) → void

draw cross line

drawCrossLineText(Canvas canvas, Size size) → void

draw text of the cross line

drawDate(Canvas canvas, Size size) → void

draw date

drawGrid(dynamic canvas) → void

draw the grid of chart

drawMaxAndMin(Canvas canvas) → void

draw maximum and minimum values

drawNowPrice(Canvas canvas) → void

draw the current price

drawText(Canvas canvas, KLineEntity data, double x) → void

draw text

drawVerticalText(dynamic canvas) → void

draw vertical text

getItem(int position) → KLineEntity

getMainMaxMinValue(KLineEntity item, int i) → void

compute maximum and minimum value

getMinTranslateX() → double

get the minimum value of translation

getSecondaryMaxMinValue(int index, KLineEntity item) → dynamic

getTextStyle(Color color) → TextStyle

define text style

getVolMaxMinValue(KLineEntity item) → void

getX(int position) → double

Get x coordinate based on index

hitTest(Offset position) → bool?

Called whenever a hit test is being performed on an object that is using this custom paint delegate.

inherited

indexOfTranslateX(double translateX) → int

initChartRenderer() → void

init chart renderer

initFormats() → void

init format time

initRect(Size size) → void

init the rectangle box to draw chart

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

paint(Canvas canvas, Size size) → void

paint chart

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

setTranslateXFromScrollX(double scrollX) → void

scrollX convert to TranslateX

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 BaseChartPainter 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

translateXtoX(double translateX) → double

translateX is converted to X in view

xToTranslateX(double x) → double

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Properties

maxScrollX ↔ double

getter/setter pair