| java.lang.Object
 org.jfree.chart.encoders.SunJPEGEncoderAdapter
| SunJPEGEncoderAdapter | | public class SunJPEGEncoderAdapter implements ImageEncoder(Code) | | Adapter class for the Sun JPEG 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 JRE 1.4+.
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| Method Summary | |
| public byte[] | encode(BufferedImage bufferedImage)
Encodes an image in JPEG format.
Parameters:
bufferedImage - the image to be encoded (null not permitted). | | public void | encode(BufferedImage bufferedImage, OutputStream outputStream)
Encodes an image in JPEG format and writes it to an output stream. | | public float | getQuality()
Returns the quality of the image encoding, which is a number in the
range 0.0f to 1.0f (higher values give better quality output, but larger
file sizes). | | public boolean | isEncodingAlpha()
Returns false always, indicating that this encoder does not
encode alpha transparency. | | public void | setEncodingAlpha(boolean encodingAlpha)
Set whether the encoder should encode alpha transparency (this is not
supported for JPEG, so this method does nothing). | | public void | setQuality(float quality)
Set the quality of the image encoding. |
| SunJPEGEncoderAdapter | | public SunJPEGEncoderAdapter()(Code) | | Creates a new SunJPEGEncoderAdapter instance.
|
| encode | | public byte[] encode(BufferedImage bufferedImage) throws IOException(Code) | | Encodes an image in JPEG format.
Parameters:
bufferedImage - the image to be encoded (null not permitted). The byte[] that is the encoded image.
throws:
IOException - if there is an I/O problem.
throws:
NullPointerException - if bufferedImage is null. |
| encode | | public void encode(BufferedImage bufferedImage, OutputStream outputStream) throws IOException(Code) | | Encodes an image in JPEG format and writes it to an output stream.
Parameters:
bufferedImage - the image to be encoded (null not permitted).
Parameters:
outputStream - the OutputStream to write the encoded image to (null not permitted).
throws:
IOException - if there is an I/O problem.
throws:
NullPointerException - if bufferedImage is null. |
| getQuality | | public float getQuality()(Code) | | Returns the quality of the image encoding, which is a number in the
range 0.0f to 1.0f (higher values give better quality output, but larger
file sizes). The default value is 0.95f.
A float representing the quality, in the range 0.0f to 1.0f.
See Also: SunJPEGEncoderAdapter.setQuality(float) |
| isEncodingAlpha | | public boolean isEncodingAlpha()(Code) | | Returns false always, indicating that this encoder does not
encode alpha transparency.
false. |
| setEncodingAlpha | | public void setEncodingAlpha(boolean encodingAlpha)(Code) | | Set whether the encoder should encode alpha transparency (this is not
supported for JPEG, so this method does nothing).
Parameters:
encodingAlpha - ignored. |
| setQuality | | public void setQuality(float quality)(Code) | | Set the quality of the image encoding.
Parameters:
quality - A float representing the quality (in the range 0.0f to1.0f).
See Also: SunJPEGEncoderAdapter.getQuality() |
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