Package org.jfree.chart.annotations

Class XYInversePointerAnnotation

java.lang.Object

org.jfree.chart.annotations.AbstractAnnotation

org.jfree.chart.annotations.AbstractXYAnnotation

org.jfree.chart.annotations.XYTextAnnotation

org.jfree.chart.annotations.XYPointerAnnotation

org.jfree.chart.annotations.XYInversePointerAnnotation

All Implemented Interfaces:

Serializable, Cloneable, Annotation, XYAnnotation, PublicCloneable

public class XYInversePointerAnnotation
extends XYPointerAnnotation
implements Cloneable, PublicCloneable, Serializable

An arrow and label that can be placed on an XYPlot. The arrow is drawn at a user-definable angle but points towards the label of the annotation.

The arrow length (and its offset from the (x, y) location) is controlled by the tip radius and the base radius attributes. Imagine two circles around the (x, y) coordinate: the inner circle defined by the tip radius, and the outer circle defined by the base radius. Now, draw the arrow starting at some point on the outer circle (the point is determined by the angle), with the arrow tip being drawn at a corresponding point on the inner circle.

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static final double	DEFAULT_DOT_RADIUS	The default dot radius (in Java2D units).

Fields inherited from class org.jfree.chart.annotations.XYPointerAnnotation

DEFAULT_ARROW_LENGTH, DEFAULT_ARROW_WIDTH, DEFAULT_BASE_RADIUS, DEFAULT_LABEL_OFFSET, DEFAULT_TIP_RADIUS

Fields inherited from class org.jfree.chart.annotations.XYTextAnnotation

DEFAULT_FONT, DEFAULT_PAINT, DEFAULT_ROTATION_ANCHOR, DEFAULT_ROTATION_ANGLE, DEFAULT_TEXT_ANCHOR

Constructor Summary

Constructors

Constructor	Description
XYInversePointerAnnotation(String label, double x, double y, double angle)	Creates a new label and arrow annotation.

Method Summary

Modifier and Type	Method	Description
Object	clone()	Returns a clone of the annotation.
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.
double	getDotRadius()	Returns the radius of the dot at the start of the arrow.
int	hashCode()	Returns a hash code for this instance.
void	setDotRadius(double dotRadius)	Sets the radius of the dot at the start of the arrow, ≤ 0 will omit the dot.

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

canEqual, getAngle, getArrowLength, getArrowPaint, getArrowStroke, getArrowWidth, getBaseRadius, getLabelOffset, getTipRadius, setAngle, setArrowLength, setArrowPaint, setArrowStroke, setArrowWidth, setBaseRadius, setLabelOffset, setTipRadius

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

getBackgroundPaint, getFont, getOutlinePaint, getOutlineStroke, getPaint, getRotationAnchor, getRotationAngle, getText, getTextAnchor, getX, getY, isOutlineVisible, setBackgroundPaint, setFont, setOutlinePaint, setOutlineStroke, setOutlineVisible, setPaint, setRotationAnchor, setRotationAngle, setText, setTextAnchor, setX, setY

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

addEntity, getToolTipText, getURL, setToolTipText, setURL

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

addChangeListener, 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

Field Details

DEFAULT_DOT_RADIUS

public static final double DEFAULT_DOT_RADIUS

The default dot radius (in Java2D units).

See Also:

• Constant Field Values

Constructor Details

XYInversePointerAnnotation

public XYInversePointerAnnotation(String label,
 double x,
 double y,
 double angle)

Creates a new label and arrow annotation.

Parameters:

label - the label (null permitted).

x - the x-coordinate (measured against the chart's domain axis).

y - the y-coordinate (measured against the chart's range axis).

angle - the angle of the arrow's line (in radians).

Method Details

getDotRadius

public double getDotRadius()

Returns the radius of the dot at the start of the arrow.

Returns:

the radius of the dot at the start of the arrow

See Also:

• setDotRadius(double)

setDotRadius

public void setDotRadius(double dotRadius)

Sets the radius of the dot at the start of the arrow, ≤ 0 will omit the dot.

Parameters:

dotRadius - the radius of the dot at the start of the arrow

See Also:

• getDotRadius()

draw

public 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

Overrides:

draw in class XYPointerAnnotation

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 - the plot rendering info.

hashCode

public int hashCode()

Description copied from class: XYPointerAnnotation

Returns a hash code for this instance.

Overrides:

hashCode in class XYPointerAnnotation

Returns:

A hash code.

equals

public boolean equals(Object obj)

Description copied from class: XYPointerAnnotation

Tests this annotation for equality with an arbitrary object.

Overrides:

equals in class XYPointerAnnotation

Parameters:

obj - the object (null permitted).

Returns:

true or false.

clone

public Object clone()
             throws CloneNotSupportedException

Returns a clone of the annotation.

Specified by:

clone in interface PublicCloneable

Overrides:

clone in class XYPointerAnnotation

Returns:

A clone.

Throws:

CloneNotSupportedException - if the annotation can't be cloned.