flexi_kline_draw_tools 2.6.0

Drawing tools for flexi_kline charts, including trend lines, Fibonacci retracements, parallel channels and more.

flexi_kline_draw_tools

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Drawing tools for flexi_kline: trend lines, Fibonacci, parallel channels and more.

Compatibility

flexi_kline_draw_tools	flexi_kline	Flutter
2.6.0	^2.6.0	>=3.41.0
2.0.1	^2.5.4	>=3.35.0
2.0.0	^2.5.1	>=3.27.0

During v2, major.minor matches the minimum required flexi_kline major.minor (2.6.x needs ^2.6.0); fixes and features of this package only bump patch, and it is not re-released when flexi_kline upgrades without needing new capabilities. After v2 stabilizes only major is aligned.

Installation

dependencies:
  flexi_kline_draw_tools: ^2.6.0

Quick start

Register the tools in one of two ways. A runnable minimal app is in example/main.dart.

// Option 1: function call
registerAllDrawObjectBuilder(controller);

// Option 2: mix into your configuration
class MyConfig extends FlexiKlineStorage
    with FlexiKlineConfigurationMixin, DrawObjectBuildersConfigMixin {
  // drawObjectBuilders is provided
}

Drawing also requires DrawConfig.enable; start a tool with controller.startDraw(trendLine).

Tools

Group	Tools	Points
Lines	trendLine, arrowLine, extendedTrendLine, trendAngle, rayLine, horizontalTrendLine, horizontalRayLine	2
Lines	horizontalLine, verticalLine, crossLine, priceLine	1
Projection	rectangle	2
Projection	parallelChannel, parallelogram	3
Fibonacci	fibRetracement, fibFans	2
Fibonacci	fibExpansion	3
Patterns	tripleWaves	4
Patterns	pentaWaves	6

tripleWaves and pentaWaves are both implemented by ElliottImpulseWaveDrawObject; they differ only in point count.

Customization

Configure everything through DrawToolsConfig.configure(), passing only what you change:

DrawToolsConfig.configure(
  arrowLine: const ArrowLineDrawParam(arrowsLen: 20),
  rectangle: const RectangleDrawParam(rectangleBgOpacity: 0.2),
  priceLine: const PriceLineDrawParam(
    priceText: TextAreaConfig(
      style: TextStyle(color: Color(0xFFFF0000), fontSize: 11),
    ),
  ),
);

Param classes per tool:

Tool	Param class	Main fields
ArrowLine	ArrowLineDrawParam	arrowsRadians, arrowsLen
PriceLine	PriceLineDrawParam	priceText, priceTextMargin
TrendAngle	TrendAngleDrawParam	angleBaseLineMinLen, angleRadSize, angleText
ParallelChannel	ParallelChannelDrawParam	parallelBgOpacity
Rectangle	RectangleDrawParam	rectangleBgOpacity
Parallelogram	ParallelogramDrawParam	bgOpacity
FibExpansion	FibonacciDrawParam	fibRates, fibColors, fibBgOpacity, fibText
FibRetracement	FibonacciDrawParam	Same as above (separate instance)
FibFans	FibFansDrawParam	fibFansParams, fibFansColors, fibFansGridColor, fibText

Line color, width and dash style come from the core package's Overlay.line, not from here. priceText and angleText default to null and fall back to the theme color of the core package's DrawConfig.ticksText.

License

Apache License 2.0