Class ThresholdRenderer

java.lang.Object

com.arbergashi.charts.render.BaseRenderer

com.arbergashi.charts.render.analysis.ThresholdRenderer

All Implemented Interfaces:

ChartRenderer

public final class ThresholdRenderer
extends BaseRenderer

ThresholdRenderer - Visual Threshold Indicator

Enterprise-grade threshold renderer for highlighting regions above or below a critical value with semi-transparent fills and optional reference lines.

Performance Characteristics:

• Render Time: < 0.5ms (constant time)
• Complexity: O(1) - draws single rectangle
• Memory: Zero allocations (shape pooling)

Since:

2024-06-01

Version:

1.0.0

Author:

Arber Gashi

Field Summary

Fields inherited from class BaseRenderer

PIXEL_BUF, PIXEL_BUF4

Constructor Summary

Constructors

Constructor	Description
ThresholdRenderer()

Method Summary

Modifier and Type	Method	Description
protected void	drawData(Graphics2D g2, ChartModel model, PlotContext context)	Implementation-specific drawing logic.
boolean	isLegendRequired()	Indicates whether this renderer should appear in the legend.

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, 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

ThresholdRenderer

public ThresholdRenderer()

Method Details

isLegendRequired

public boolean isLegendRequired()

Description copied from class: BaseRenderer

Indicates whether this renderer should appear in the legend.

Specified by:

isLegendRequired in interface ChartRenderer

Overrides:

isLegendRequired in class BaseRenderer

Returns:

true if the renderer should appear in the legend

drawData

protected void drawData(Graphics2D g2,
 ChartModel model,
 PlotContext context)

Description copied from class: BaseRenderer

Implementation-specific drawing logic. Must follow Zero-Allocation rules.

Specified by:

drawData in class BaseRenderer