com.jrefinery.chart
Class AbstractXYItemRenderer

java.lang.Object
  com.jrefinery.chart.AbstractXYItemRenderer

All Implemented Interfaces:

XYItemRenderer

Direct Known Subclasses:

AreaXYItemRenderer, CandlestickRenderer, HighLowRenderer, SignalRenderer, StandardXYItemRenderer, VerticalXYBarRenderer, WindItemRenderer, XYStepRenderer

public abstract class AbstractXYItemRenderer
extends java.lang.Object
implements XYItemRenderer

A base class that can be used to create new XYItemRenderer implementations.

Field Summary

protected ChartRenderingInfo	info An object (optional) that collects information about the chart structure.
protected java.beans.PropertyChangeSupport	listeners Support class for the property change listener mechanism.
protected com.jrefinery.chart.tooltips.XYToolTipGenerator	toolTipGenerator The tool tip generator.

Constructor Summary

protected	AbstractXYItemRenderer() Default constructor.
protected	AbstractXYItemRenderer(com.jrefinery.chart.tooltips.XYToolTipGenerator toolTipGenerator) Creates a renderer with the specified tooltip generator.

Method Summary

void	addPropertyChangeListener(java.beans.PropertyChangeListener listener) Adds a property change listener to the renderer.
protected void	firePropertyChanged(java.lang.String propertyName, java.lang.Object oldValue, java.lang.Object newValue) Notifies registered listeners that a property of the renderer has changed.
com.jrefinery.chart.tooltips.XYToolTipGenerator	getToolTipGenerator() Returns the tool tip generator.
void	initialise(java.awt.Graphics2D g2, java.awt.geom.Rectangle2D dataArea, XYPlot plot, XYDataset data, ChartRenderingInfo info) Initialises the renderer.
void	removePropertyChangeListener(java.beans.PropertyChangeListener listener) Removes a property change listener from the renderer.
void	setToolTipGenerator(com.jrefinery.chart.tooltips.XYToolTipGenerator toolTipGenerator) Sets the tool tip generator.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.jrefinery.chart.XYItemRenderer

drawItem

Field Detail

info

protected ChartRenderingInfo info

An object (optional) that collects information about the chart structure.

toolTipGenerator

protected com.jrefinery.chart.tooltips.XYToolTipGenerator toolTipGenerator

The tool tip generator.

listeners

protected java.beans.PropertyChangeSupport listeners

Support class for the property change listener mechanism.

Constructor Detail

AbstractXYItemRenderer

protected AbstractXYItemRenderer()

Default constructor.

AbstractXYItemRenderer

protected AbstractXYItemRenderer(com.jrefinery.chart.tooltips.XYToolTipGenerator toolTipGenerator)

Creates a renderer with the specified tooltip generator. Storage is allocation for property change listeners.

Parameters:

tooltipGenerator - The tooltip generator (null permitted).

Method Detail

initialise

public void initialise(java.awt.Graphics2D g2,
                       java.awt.geom.Rectangle2D dataArea,
                       XYPlot plot,
                       XYDataset data,
                       ChartRenderingInfo info)

Initialises the renderer. This method will be called before the first item is rendered, giving the renderer an opportunity to initialise any state information it wants to maintain. The renderer can do nothing if it chooses.

Specified by:

initialise in interface XYItemRenderer

Parameters:

g2 - The graphics device.

dataArea - The area inside the axes.

plot - The plot.

data - The data.

info - An optional info collection object to return data back to the caller.

getToolTipGenerator

public com.jrefinery.chart.tooltips.XYToolTipGenerator getToolTipGenerator()

Returns the tool tip generator.

Specified by:

getToolTipGenerator in interface XYItemRenderer

Returns:

The tool tip generator.

setToolTipGenerator

public void setToolTipGenerator(com.jrefinery.chart.tooltips.XYToolTipGenerator toolTipGenerator)

Sets the tool tip generator.

Specified by:

setToolTipGenerator in interface XYItemRenderer

Parameters:

toolTipGenerator - The tool tip generator.

addPropertyChangeListener

public void addPropertyChangeListener(java.beans.PropertyChangeListener listener)

Adds a property change listener to the renderer.

Specified by:

addPropertyChangeListener in interface XYItemRenderer

Parameters:

listener - The listener.

removePropertyChangeListener

public void removePropertyChangeListener(java.beans.PropertyChangeListener listener)

Removes a property change listener from the renderer.

Specified by:

removePropertyChangeListener in interface XYItemRenderer

Parameters:

listener - The listener.

firePropertyChanged

protected void firePropertyChanged(java.lang.String propertyName,
                                   java.lang.Object oldValue,
                                   java.lang.Object newValue)

Notifies registered listeners that a property of the renderer has changed.

Parameters:

propertyName - The name of the property.

oldValue - The old value.

newValue - The new value.