org.rrd4j.graph

Class HRule

java.lang.Object

org.rrd4j.graph.PlotElement

org.rrd4j.graph.Rule

org.rrd4j.graph.HRule

class HRule
extends Rule

Represents a horizontal rule in RRD graphs. Draws a horizontal line at a specific value across the graph with optional legend.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) double	value The value at which to draw the horizontal rule

Fields inherited from class org.rrd4j.graph.Rule

legend, stroke

Fields inherited from class org.rrd4j.graph.PlotElement

color

Constructor Summary

Constructors

Constructor and Description
HRule(double value, Paint color, LegendText legend, BasicStroke stroke) Creates a horizontal rule at the specified value.

Method Summary

Modifier and Type	Method and Description
(package private) void	setLegendVisibility(double minval, double maxval, boolean forceLegend) Sets legend visibility based on value range and force setting.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

value

final double value

The value at which to draw the horizontal rule

Constructor Detail

HRule

HRule(double value,
      Paint color,
      LegendText legend,
      BasicStroke stroke)

Creates a horizontal rule at the specified value.

Parameters:

value - the y-axis value for the rule

color - color for the rule line

legend - optional legend text

stroke - stroke style for the line

Method Detail

setLegendVisibility

void setLegendVisibility(double minval,
                         double maxval,
                         boolean forceLegend)

Sets legend visibility based on value range and force setting.

Parameters:

minval - minimum value range

maxval - maximum value range

forceLegend - if true, legend is always visible