Package org.jfree.chart.util

Class ExportUtils

java.lang.Object

org.jfree.chart.util.ExportUtils

public class ExportUtils
extends Object

Utility functions for exporting charts to SVG and PDF format.

Constructor Summary

Constructors

Constructor	Description
ExportUtils()

Method Summary

Modifier and Type	Method	Description
static boolean	isJFreeSVGAvailable()	Returns true if JFreeSVG is on the classpath, and false otherwise.
static boolean	isOrsonPDFAvailable()	Returns true if OrsonPDF (or JFreePDF) is on the classpath, and false otherwise.
static void	writeAsJPEG(Drawable drawable, int w, int h, File file)	Writes the current content to the specified file in JPEG format.
static void	writeAsPDF(Drawable drawable, int w, int h, File file)	Writes a Drawable to the specified file in PDF format.
static void	writeAsPNG(Drawable drawable, int w, int h, File file)	Writes the current content to the specified file in PNG format.
static void	writeAsSVG(Drawable drawable, int w, int h, File file)	Writes the current content to the specified file in SVG format.

Methods inherited from class java.lang.Object

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

Constructor Details

ExportUtils

public ExportUtils()

Method Details

isJFreeSVGAvailable

public static boolean isJFreeSVGAvailable()

Returns true if JFreeSVG is on the classpath, and false otherwise. The JFreeSVG library can be found at http://www.jfree.org/jfreesvg/

Returns:

A boolean.

isOrsonPDFAvailable

public static boolean isOrsonPDFAvailable()

Returns true if OrsonPDF (or JFreePDF) is on the classpath, and false otherwise. The OrsonPDF library can be found at https://github.com/jfree/orsonpdf. JFreePDF is a modular version of the same library, requiring Java 11 or later. Since JFreeChart might be used in a modular context, this function has been modified (in version 1.5.3) to detect JFreePDF also.

Returns:

A boolean.

writeAsSVG

public static void writeAsSVG(Drawable drawable,
 int w,
 int h,
 File file)

Writes the current content to the specified file in SVG format. This will only work when the JFreeSVG library is found on the classpath. Reflection is used to ensure there is no compile-time dependency on JFreeSVG.

Parameters:

drawable - the drawable (null not permitted).

w - the chart width.

h - the chart height.

file - the output file (null not permitted).

writeAsPDF

public static void writeAsPDF(Drawable drawable,
 int w,
 int h,
 File file)

Writes a Drawable to the specified file in PDF format. This will only work when the OrsonPDF library is found on the classpath. Reflection is used to ensure there is no compile-time dependency on OrsonPDF.

Parameters:

drawable - the drawable (null not permitted).

w - the chart width.

h - the chart height.

file - the output file (null not permitted).

writeAsPNG

public static void writeAsPNG(Drawable drawable,
 int w,
 int h,
 File file)
                       throws FileNotFoundException,
IOException

Writes the current content to the specified file in PNG format.

Parameters:

drawable - the drawable (null not permitted).

w - the chart width.

h - the chart height.

file - the output file (null not permitted).

Throws:

FileNotFoundException - if the file is not found.

IOException - if there is an I/O problem.

writeAsJPEG

public static void writeAsJPEG(Drawable drawable,
 int w,
 int h,
 File file)
                        throws FileNotFoundException,
IOException

Writes the current content to the specified file in JPEG format.

Parameters:

drawable - the drawable (null not permitted).

w - the chart width.

h - the chart height.

file - the output file (null not permitted).

Throws:

FileNotFoundException - if the file is not found.

IOException - if there is an I/O problem.