org.jfree.chart.encoders

Class SunPNGEncoderAdapter

java.lang.Object

org.jfree.chart.encoders.SunPNGEncoderAdapter

All Implemented Interfaces:

ImageEncoder

public class SunPNGEncoderAdapter
extends Object
implements ImageEncoder

Adapter class for the Sun PNG Encoder. The ImageEncoderFactory will only return a reference to this class by default if the library has been compiled under a JDK 1.4+ and is being run using a JDK 1.4+.

Constructor Summary

Constructors

Constructor and Description
SunPNGEncoderAdapter()

Method Summary

Modifier and Type	Method and Description
byte[]	encode(BufferedImage bufferedImage) Encodes an image in PNG format.
void	encode(BufferedImage bufferedImage, OutputStream outputStream) Encodes an image in PNG format and writes it to an OutputStream.
float	getQuality() Get the quality of the image encoding (always 0.0).
boolean	isEncodingAlpha() Get whether the encoder should encode alpha transparency (always false).
void	setEncodingAlpha(boolean encodingAlpha) Set whether the encoder should encode alpha transparency (not supported in this ImageEncoder).
void	setQuality(float quality) Set the quality of the image encoding (not supported in this ImageEncoder).

Methods inherited from class java.lang.Object

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

Constructor Detail

SunPNGEncoderAdapter

public SunPNGEncoderAdapter()

Method Detail

getQuality

public float getQuality()

Get the quality of the image encoding (always 0.0).

Specified by:

getQuality in interface ImageEncoder

Returns:

A float representing the quality.

setQuality

public void setQuality(float quality)

Set the quality of the image encoding (not supported in this ImageEncoder).

Specified by:

setQuality in interface ImageEncoder

Parameters:

quality - A float representing the quality.

isEncodingAlpha

public boolean isEncodingAlpha()

Get whether the encoder should encode alpha transparency (always false).

Specified by:

isEncodingAlpha in interface ImageEncoder

Returns:

Whether the encoder is encoding alpha transparency.

setEncodingAlpha

public void setEncodingAlpha(boolean encodingAlpha)

Set whether the encoder should encode alpha transparency (not supported in this ImageEncoder).

Specified by:

setEncodingAlpha in interface ImageEncoder

Parameters:

encodingAlpha - Whether the encoder should encode alpha transparency.

encode

public byte[] encode(BufferedImage bufferedImage)
              throws IOException

Encodes an image in PNG format.

Specified by:

encode in interface ImageEncoder

Parameters:

bufferedImage - The image to be encoded.

Returns:

The byte[] that is the encoded image.

Throws:

IOException - if there is an IO problem.

encode

public void encode(BufferedImage bufferedImage,
                   OutputStream outputStream)
            throws IOException

Encodes an image in PNG format and writes it to an OutputStream.

Specified by:

encode in interface ImageEncoder

Parameters:

bufferedImage - The image to be encoded.

outputStream - The OutputStream to write the encoded image to.

Throws:

IOException - if there is an IO problem.