org.progeeks.jfreechart
Class XYCrosshairsFocusHandler

java.lang.Object
  org.progeeks.jfreechart.DefaultFocusHandler
      org.progeeks.jfreechart.XYCrosshairsFocusHandler

All Implemented Interfaces:

ChartFocusHandler

Direct Known Subclasses:

TimeSeriesCrosshairsFocusHandler

public class XYCrosshairsFocusHandler
extends DefaultFocusHandler

Draws the crosshairs at the data point representing the passed in focus object.

Version:

$Revision: 1.5 $

Author:

esword

Field Summary

protected static Log

log

Constructor Summary

XYCrosshairsFocusHandler()

Method Summary

protected double	getDomainCrosshairValue(org.jfree.data.xy.XYDataset focusedData) Focus the domain crosshair on the x value of the datapoint.
protected double	getRangeCrosshairValue(org.jfree.data.xy.XYDataset focusedData) If a value property exists, focus the range crosshair on the value of the datapoint.
protected double	getYValue(java.lang.String seriesName, double xValue) Given an X value (not a series index), return the corresponding Y value in the given series.
boolean	handleFocus(java.lang.Object newFocus)

Methods inherited from class org.progeeks.jfreechart.DefaultFocusHandler

getChart, getProducer, setChart, setProducer, transformFocusData

Methods inherited from class java.lang.Object

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

Field Detail

log

protected static final Log log

Constructor Detail

XYCrosshairsFocusHandler

public XYCrosshairsFocusHandler()

Method Detail

handleFocus

public boolean handleFocus(java.lang.Object newFocus)

Specified by:

handleFocus in interface ChartFocusHandler

Overrides:

handleFocus in class DefaultFocusHandler

getDomainCrosshairValue

protected double getDomainCrosshairValue(org.jfree.data.xy.XYDataset focusedData)

Focus the domain crosshair on the x value of the datapoint.

Parameters:

focusedData -

getRangeCrosshairValue

protected double getRangeCrosshairValue(org.jfree.data.xy.XYDataset focusedData)

If a value property exists, focus the range crosshair on the value of the datapoint. Otherwise, set the crosshair to the Y-value for the real series for this x value

Parameters:

focusedData -

getYValue

protected double getYValue(java.lang.String seriesName,
                           double xValue)

Given an X value (not a series index), return the corresponding Y value in the given series.

Parameters:

seriesName -

xValue -

Returns:

The Y value or 0.0 if the x Value could not be found.