Package org.jfree.chart.annotations

Class AbstractXYAnnotation

java.lang.Object

org.jfree.chart.annotations.AbstractAnnotation

org.jfree.chart.annotations.AbstractXYAnnotation

All Implemented Interfaces:

Serializable, Cloneable, Annotation, XYAnnotation

Direct Known Subclasses:

XYBoxAnnotation, XYDataImageAnnotation, XYDataRangeAnnotation, XYDrawableAnnotation, XYImageAnnotation, XYLineAnnotation, XYPolygonAnnotation, XYShapeAnnotation, XYTextAnnotation, XYTitleAnnotation

public abstract class AbstractXYAnnotation
extends AbstractAnnotation
implements XYAnnotation

The interface that must be supported by annotations that are to be added to an XYPlot.

See Also:

• Serialized Form

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractXYAnnotation()	Creates a new instance that has no tool tip or URL specified.

Method Summary

Modifier and Type	Method	Description
protected void	addEntity(PlotRenderingInfo info, Shape hotspot, int rendererIndex, String toolTipText, String urlText)	A utility method for adding an XYAnnotationEntity to a PlotRenderingInfo instance.
boolean	canEqual(Object other)	Ensures symmetry between super/subclass implementations of equals.
abstract void	draw(Graphics2D g2, XYPlot plot, Rectangle2D dataArea, ValueAxis domainAxis, ValueAxis rangeAxis, int rendererIndex, PlotRenderingInfo info)	Draws the annotation.
boolean	equals(Object obj)	Tests this annotation for equality with an arbitrary object.
String	getToolTipText()	Returns the tool tip text for the annotation.
String	getURL()	Returns the URL for the annotation.
int	hashCode()	Returns a hash code for this instance.
void	setToolTipText(String text)	Sets the tool tip text for the annotation.
void	setURL(String url)	Sets the URL for the annotation.

Methods inherited from class org.jfree.chart.annotations.AbstractAnnotation

addChangeListener, clone, fireAnnotationChanged, getNotify, hasListener, notifyListeners, removeChangeListener, setNotify

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.jfree.chart.annotations.Annotation

addChangeListener, removeChangeListener

Constructor Details

AbstractXYAnnotation

protected AbstractXYAnnotation()

Creates a new instance that has no tool tip or URL specified.

Method Details

getToolTipText

public String getToolTipText()

Returns the tool tip text for the annotation. This will be displayed in a ChartPanel when the mouse pointer hovers over the annotation.

Returns:

The tool tip text (possibly null).

See Also:

• setToolTipText(String)

setToolTipText

public void setToolTipText(String text)

Sets the tool tip text for the annotation.

Parameters:

text - the tool tip text (null permitted).

See Also:

• getToolTipText()

getURL

public String getURL()

Returns the URL for the annotation. This URL will be used to provide hyperlinks when an HTML image map is created for the chart.

Returns:

The URL (possibly null).

See Also:

• setURL(String)

setURL

public void setURL(String url)

Sets the URL for the annotation.

Parameters:

url - the URL (null permitted).

See Also:

• getURL()

draw

public abstract void draw(Graphics2D g2,
 XYPlot plot,
 Rectangle2D dataArea,
 ValueAxis domainAxis,
 ValueAxis rangeAxis,
 int rendererIndex,
 PlotRenderingInfo info)

Draws the annotation.

Specified by:

draw in interface XYAnnotation

Parameters:

g2 - the graphics device.

plot - the plot.

dataArea - the data area.

domainAxis - the domain axis.

rangeAxis - the range axis.

rendererIndex - the renderer index.

info - if supplied, this info object will be populated with entity information.

addEntity

protected void addEntity(PlotRenderingInfo info,
 Shape hotspot,
 int rendererIndex,
 String toolTipText,
 String urlText)

A utility method for adding an XYAnnotationEntity to a PlotRenderingInfo instance.

Parameters:

info - the plot rendering info (null permitted).

hotspot - the hotspot area.

rendererIndex - the renderer index.

toolTipText - the tool tip text.

urlText - the URL text.

equals

public boolean equals(Object obj)

Tests this annotation for equality with an arbitrary object.

Overrides:

equals in class AbstractAnnotation

Parameters:

obj - the object (null permitted).

Returns:

A boolean.

canEqual

public boolean canEqual(Object other)

Ensures symmetry between super/subclass implementations of equals. For more detail, see http://jqno.nl/equalsverifier/manual/inheritance.

Overrides:

canEqual in class AbstractAnnotation

Parameters:

other - Object

Returns:

true ONLY if the parameter is THIS class type

hashCode

public int hashCode()

Returns a hash code for this instance.

Overrides:

hashCode in class AbstractAnnotation

Returns:

A hash code.