java.lang.Object

com.arbergashi.charts.render.BaseRenderer

com.arbergashi.charts.render.financial.FibonacciRenderer

All Implemented Interfaces:: ChartRenderer

public final class FibonacciRenderer extends BaseRenderer

FibonacciRenderer - Fibonacci Retracement Levels

Professional Fibonacci retracement renderer for technical analysis. Displays key Fibonacci levels based on swing high and swing low.

Features:

Retracement Levels: 0%, 23.6%, 38.2%, 50%, 61.8%, 78.6%, 100%
Extension Levels: 127.2%, 161.8%, 261.8%
Color Coding: Key levels (38.2%, 50%, 61.8%) emphasized
Labels: Level percentages displayed
Auto-Detection: Finds swing high/low automatically

Data Requirements:

Requires price data. Automatically detects swing high and low points within the visible range.

Fibonacci Ratios:

0.236 (23.6%) - Shallow retracement
0.382 (38.2%) - Key support/resistance
0.500 (50.0%) - Psychological level
0.618 (61.8%) - Golden ratio
0.786 (78.6%) - Deep retracement

Since:: 2026-01-01
Version:: 1.0.0
Author:: Arber Gashi

Field Summary

Fields inherited from class BaseRenderer
PIXEL_BUF, PIXEL_BUF4
Constructor Summary

Constructors

Constructor

Description

FibonacciRenderer()
Method Summary

Modifier and Type

Method

Description

protected void

drawData(Graphics2D g, ChartModel model, PlotContext context)

Implementation-specific drawing logic.

Methods inherited from class BaseRenderer
drawHighlightPoint, drawI18nLabel, drawLabel, getArc, getCachedFont, getCachedGradient, getCachedStroke, getCachedStroke, getCachedStroke, getCubicCurve, getEllipse, getId, getLayerIndex, getLegendColor, getLine, getName, getPathCache, getPointAt, getRect, getRoundRectangle, getSeriesColor, getSeriesStroke, getTheme, getTooltipText, isLegendRequired, isMultiColor, pBuffer, pBuffer4, render, resolveTheme, seriesOrBase, setLayerIndex, setMultiColor, setTheme, setupQualityHints, themeAccent, themeAxisLabel, themeBackground, themeBearish, themeBullish, themeForeground, themeGrid, themeSeries

Methods inherited from class Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface ChartRenderer
clearHover, createContext, getFocusValues, getPreferredYRange, renderEmptyState, supportsEmptyState

Constructor Details
- FibonacciRenderer
  
  public FibonacciRenderer()
Method Details
- drawData
  
  protected void drawData(Graphics2D g, ChartModel model, PlotContext context)
  
  Description copied from class: BaseRenderer
  
  Implementation-specific drawing logic. Must follow Zero-Allocation rules.
  
  Specified by:
  
  drawData in class BaseRenderer