Module platform

Package org.jfree.chart.labels

Class StandardPieSectionLabelGenerator

java.lang.Object

org.jfree.chart.labels.AbstractPieItemLabelGenerator

org.jfree.chart.labels.StandardPieSectionLabelGenerator

All Implemented Interfaces:

Serializable, Cloneable, PieSectionLabelGenerator, PublicCloneable

public class StandardPieSectionLabelGenerator
extends AbstractPieItemLabelGenerator
implements PieSectionLabelGenerator, Cloneable, PublicCloneable, Serializable

A standard item label generator for plots that use data from a PieDataset.

For the label format, use {0} where the pie section key should be inserted, {1} for the absolute section value and {2} for the percent amount of the pie section, e.g. "{0} = {1} ({2})" will display as apple = 120 (5%).

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static final String	DEFAULT_SECTION_LABEL_FORMAT	The default section label format.

Constructor Summary

Constructors

Constructor	Description
StandardPieSectionLabelGenerator()	Creates a new section label generator using DEFAULT_SECTION_LABEL_FORMAT as the label format string, and platform default number and percentage formatters.
StandardPieSectionLabelGenerator(String labelFormat)	Creates a new section label generator using the specified label format string, and platform default number and percentage formatters.
StandardPieSectionLabelGenerator(String labelFormat, NumberFormat numberFormat, NumberFormat percentFormat)	Creates an item label generator using the specified number formatters.
StandardPieSectionLabelGenerator(String labelFormat, Locale locale)	Creates a new instance for the specified locale.
StandardPieSectionLabelGenerator(Locale locale)	Creates a new instance for the specified locale.

Method Summary

Modifier and Type	Method	Description
Object	clone()	Returns an independent copy of the generator.
boolean	equals(Object obj)	Tests the generator for equality with an arbitrary object.
AttributedString	generateAttributedSectionLabel(PieDataset dataset, Comparable key)	Generates an attributed label for the specified series, or null if no attributed label is available (in which case, the string returned by generateSectionLabel(PieDataset, Comparable) will provide the fallback).
String	generateSectionLabel(PieDataset dataset, Comparable key)	Generates a label for a pie section.
AttributedString	getAttributedLabel(int section)	Returns the attributed label for a section, or null if none is defined.
void	setAttributedLabel(int section, AttributedString label)	Sets the attributed label for a section.

Methods inherited from class org.jfree.chart.labels.AbstractPieItemLabelGenerator

createItemArray, getLabelFormat, getNumberFormat, getPercentFormat, hashCode

Methods inherited from class java.lang.Object

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

Field Details

DEFAULT_SECTION_LABEL_FORMAT

public static final String DEFAULT_SECTION_LABEL_FORMAT

The default section label format.

See Also:

• Constant Field Values

Constructor Details

StandardPieSectionLabelGenerator

public StandardPieSectionLabelGenerator()

Creates a new section label generator using DEFAULT_SECTION_LABEL_FORMAT as the label format string, and platform default number and percentage formatters.

StandardPieSectionLabelGenerator

public StandardPieSectionLabelGenerator(Locale locale)

Creates a new instance for the specified locale.

Parameters:

locale - the local (null not permitted).

StandardPieSectionLabelGenerator

public StandardPieSectionLabelGenerator(String labelFormat)

Creates a new section label generator using the specified label format string, and platform default number and percentage formatters.

Parameters:

labelFormat - the label format (null not permitted).

StandardPieSectionLabelGenerator

public StandardPieSectionLabelGenerator(String labelFormat,
 Locale locale)

Creates a new instance for the specified locale.

Parameters:

labelFormat - the label format (null not permitted).

locale - the local (null not permitted).

StandardPieSectionLabelGenerator

public StandardPieSectionLabelGenerator(String labelFormat,
 NumberFormat numberFormat,
 NumberFormat percentFormat)

Creates an item label generator using the specified number formatters.

Parameters:

labelFormat - the label format string (null not permitted).

numberFormat - the format object for the values (null not permitted).

percentFormat - the format object for the percentages (null not permitted).

Method Details

getAttributedLabel

public AttributedString getAttributedLabel(int section)

Returns the attributed label for a section, or null if none is defined.

Parameters:

section - the section index.

Returns:

The attributed label.

setAttributedLabel

public void setAttributedLabel(int section,
 AttributedString label)

Sets the attributed label for a section.

Parameters:

section - the section index.

label - the label (null permitted).

generateSectionLabel

public String generateSectionLabel(PieDataset dataset,
 Comparable key)

Generates a label for a pie section.

Specified by:

generateSectionLabel in interface PieSectionLabelGenerator

Overrides:

generateSectionLabel in class AbstractPieItemLabelGenerator

Parameters:

dataset - the dataset (null not permitted).

key - the section key (null not permitted).

Returns:

The label (possibly null).

generateAttributedSectionLabel

public AttributedString generateAttributedSectionLabel(PieDataset dataset,
 Comparable key)

Generates an attributed label for the specified series, or null if no attributed label is available (in which case, the string returned by generateSectionLabel(PieDataset, Comparable) will provide the fallback). Only certain attributes are recognised by the code that ultimately displays the labels:

• TextAttribute.FONT: will set the font;
• TextAttribute.POSTURE: a value of TextAttribute.POSTURE_OBLIQUE will add Font.ITALIC to the current font;
• TextAttribute.WEIGHT: a value of TextAttribute.WEIGHT_BOLD will add Font.BOLD to the current font;
• TextAttribute.FOREGROUND: this will set the Paint for the current
• TextAttribute.SUPERSCRIPT: the values TextAttribute.SUPERSCRIPT_SUB and TextAttribute.SUPERSCRIPT_SUPER are recognised.

Specified by:

generateAttributedSectionLabel in interface PieSectionLabelGenerator

Parameters:

dataset - the dataset (null not permitted).

key - the key.

Returns:

An attributed label (possibly null).

equals

public boolean equals(Object obj)

Tests the generator for equality with an arbitrary object.

Overrides:

equals in class AbstractPieItemLabelGenerator

Parameters:

obj - the object to test against (null permitted).

Returns:

A boolean.

clone

public Object clone()
             throws CloneNotSupportedException

Returns an independent copy of the generator.

Specified by:

clone in interface PublicCloneable

Overrides:

clone in class AbstractPieItemLabelGenerator

Returns:

A clone.

Throws:

CloneNotSupportedException - should not happen.