Package org.jfree.chart.encoders

Class EncoderUtil

java.lang.Object

org.jfree.chart.encoders.EncoderUtil

public class EncoderUtil
extends Object

A collection of utility methods for encoding images and returning them as a byte[] or writing them directly to an OutputStream.

Constructor Summary

Constructors

Constructor	Description
EncoderUtil()

Method Summary

Modifier and Type	Method	Description
static byte[]	encode(BufferedImage image, String format)	Encode the image in a specific format.
static byte[]	encode(BufferedImage image, String format, boolean encodeAlpha)	Encode the image in a specific format.
static byte[]	encode(BufferedImage image, String format, float quality)	Encode the image in a specific format.
static byte[]	encode(BufferedImage image, String format, float quality, boolean encodeAlpha)	Encode the image in a specific format.
static void	writeBufferedImage(BufferedImage image, String format, OutputStream outputStream)	Encode the image in a specific format and write it to an OutputStream.
static void	writeBufferedImage(BufferedImage image, String format, OutputStream outputStream, boolean encodeAlpha)	Encode the image in a specific format and write it to an OutputStream.
static void	writeBufferedImage(BufferedImage image, String format, OutputStream outputStream, float quality)	Encode the image in a specific format and write it to an OutputStream.
static void	writeBufferedImage(BufferedImage image, String format, OutputStream outputStream, float quality, boolean encodeAlpha)	Encode the image in a specific format and write it to an OutputStream.

Methods inherited from class java.lang.Object

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

Constructor Details

EncoderUtil

public EncoderUtil()

Method Details

encode

public static byte[] encode(BufferedImage image,
 String format)
                     throws IOException

Encode the image in a specific format.

Parameters:

image - The image to be encoded.

format - The ImageFormat to use.

Returns:

The byte[] that is the encoded image.

Throws:

IOException - if there is an IO problem.

encode

public static byte[] encode(BufferedImage image,
 String format,
 boolean encodeAlpha)
                     throws IOException

Encode the image in a specific format.

Parameters:

image - The image to be encoded.

format - The ImageFormat to use.

encodeAlpha - Whether to encode alpha transparency (not supported by all ImageEncoders).

Returns:

The byte[] that is the encoded image.

Throws:

IOException - if there is an IO problem.

encode

public static byte[] encode(BufferedImage image,
 String format,
 float quality)
                     throws IOException

Encode the image in a specific format.

Parameters:

image - The image to be encoded.

format - The ImageFormat to use.

quality - The quality to use for the image encoding (not supported by all ImageEncoders).

Returns:

The byte[] that is the encoded image.

Throws:

IOException - if there is an IO problem.

encode

public static byte[] encode(BufferedImage image,
 String format,
 float quality,
 boolean encodeAlpha)
                     throws IOException

Encode the image in a specific format.

Parameters:

image - The image to be encoded.

format - The ImageFormat to use.

quality - The quality to use for the image encoding (not supported by all ImageEncoders).

encodeAlpha - Whether to encode alpha transparency (not supported by all ImageEncoders).

Returns:

The byte[] that is the encoded image.

Throws:

IOException - if there is an IO problem.

writeBufferedImage

public static void writeBufferedImage(BufferedImage image,
 String format,
 OutputStream outputStream)
                               throws IOException

Encode the image in a specific format and write it to an OutputStream.

Parameters:

image - The image to be encoded.

format - The ImageFormat to use.

outputStream - The OutputStream to write the encoded image to.

Throws:

IOException - if there is an IO problem.

writeBufferedImage

public static void writeBufferedImage(BufferedImage image,
 String format,
 OutputStream outputStream,
 float quality)
                               throws IOException

Encode the image in a specific format and write it to an OutputStream.

Parameters:

image - The image to be encoded.

format - The ImageFormat to use.

outputStream - The OutputStream to write the encoded image to.

quality - The quality to use for the image encoding (not supported by all ImageEncoders).

Throws:

IOException - if there is an IO problem.

writeBufferedImage

public static void writeBufferedImage(BufferedImage image,
 String format,
 OutputStream outputStream,
 boolean encodeAlpha)
                               throws IOException

Encode the image in a specific format and write it to an OutputStream.

Parameters:

image - The image to be encoded.

format - The ImageFormat to use.

outputStream - The OutputStream to write the encoded image to.

encodeAlpha - Whether to encode alpha transparency (not supported by all ImageEncoders).

Throws:

IOException - if there is an IO problem.

writeBufferedImage

public static void writeBufferedImage(BufferedImage image,
 String format,
 OutputStream outputStream,
 float quality,
 boolean encodeAlpha)
                               throws IOException

Encode the image in a specific format and write it to an OutputStream.

Parameters:

image - The image to be encoded.

format - The ImageFormat to use.

outputStream - The OutputStream to write the encoded image to.

quality - The quality to use for the image encoding (not supported by all ImageEncoders).

encodeAlpha - Whether to encode alpha transparency (not supported by all ImageEncoders).

Throws:

IOException - if there is an IO problem.