org.rrd4j.graph

Class VRule

java.lang.Object

org.rrd4j.graph.PlotElement

org.rrd4j.graph.Rule

org.rrd4j.graph.VRule

class VRule
extends Rule

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

Field Summary

Fields

Modifier and Type	Field and Description
(package private) long	timestamp The timestamp at which to draw the vertical 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
VRule(long timestamp, Paint color, LegendText legend, BasicStroke stroke) Creates a vertical rule at the specified timestamp.

Method Summary

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

Methods inherited from class java.lang.Object

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

Field Detail

timestamp

final long timestamp

The timestamp at which to draw the vertical rule

Constructor Detail

VRule

VRule(long timestamp,
      Paint color,
      LegendText legend,
      BasicStroke stroke)

Creates a vertical rule at the specified timestamp.

Parameters:

timestamp - timestamp in seconds for the rule

color - color for the rule line

legend - optional legend text

stroke - stroke style for the line

Method Detail

setLegendVisibility

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

Sets legend visibility based on timestamp range and force setting.

Parameters:

minval - minimum timestamp range

maxval - maximum timestamp range

forceLegend - if true, legend is always visible