org.apache.batik.transcoder.image
Class PNGTranscoder

java.lang.Object
  |
  +--org.apache.batik.transcoder.TranscoderSupport
        |
        +--org.apache.batik.transcoder.AbstractTranscoder
              |
              +--org.apache.batik.transcoder.XMLAbstractTranscoder
                    |
                    +--org.apache.batik.transcoder.SVGAbstractTranscoder
                          |
                          +--org.apache.batik.transcoder.image.ImageTranscoder
                                |
                                +--org.apache.batik.transcoder.image.PNGTranscoder

All Implemented Interfaces:

Transcoder

public class PNGTranscoder

extends ImageTranscoder

This class is an ImageTranscoder that produces a PNG image.

Inner classes inherited from class org.apache.batik.transcoder.SVGAbstractTranscoder

SVGAbstractTranscoder.SVGAbstractTranscoderUserAgent

Field Summary

static TranscodingHints.Key	KEY_GAMMA The gamma correction key.
static TranscodingHints.Key	KEY_INDEXED The write a 256 color indexed image key.

Fields inherited from class org.apache.batik.transcoder.image.ImageTranscoder

KEY_BACKGROUND_COLOR, KEY_FORCE_TRANSPARENT_WHITE

Fields inherited from class org.apache.batik.transcoder.SVGAbstractTranscoder

curAOI, curTxf, DEFAULT_ALLOWED_SCRIPT_TYPES, height, KEY_ALLOWED_SCRIPT_TYPES, KEY_ALTERNATE_STYLESHEET, KEY_AOI, KEY_CONSTRAIN_SCRIPT_ORIGIN, KEY_EXECUTE_ONLOAD, KEY_HEIGHT, KEY_LANGUAGE, KEY_MEDIA, KEY_PIXEL_TO_MM, KEY_PIXEL_UNIT_TO_MILLIMETER, KEY_USER_STYLESHEET_URI, KEY_WIDTH, root, userAgent, width

Fields inherited from class org.apache.batik.transcoder.XMLAbstractTranscoder

KEY_DOCUMENT_ELEMENT, KEY_DOCUMENT_ELEMENT_NAMESPACE_URI, KEY_DOM_IMPLEMENTATION, KEY_XML_PARSER_CLASSNAME, KEY_XML_PARSER_VALIDATING

Fields inherited from class org.apache.batik.transcoder.TranscoderSupport

handler, hints

Constructor Summary

PNGTranscoder()
Constructs a new transcoder that produces png images.

Method Summary

java.awt.image.BufferedImage	createImage(int width, int height) Creates a new ARGB image with the specified dimension.
void	writeImage(java.awt.image.BufferedImage img, TranscoderOutput output) Writes the specified image to the specified output.

Methods inherited from class org.apache.batik.transcoder.image.ImageTranscoder

transcode

Methods inherited from class org.apache.batik.transcoder.SVGAbstractTranscoder

createDocumentFactory, createUserAgent

Methods inherited from class org.apache.batik.transcoder.XMLAbstractTranscoder

transcode

Methods inherited from class org.apache.batik.transcoder.TranscoderSupport

addTranscodingHint, getErrorHandler, getTranscodingHints, removeTranscodingHint, setErrorHandler, setTranscodingHints, setTranscodingHints

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.batik.transcoder.Transcoder

addTranscodingHint, getErrorHandler, getTranscodingHints, removeTranscodingHint, setErrorHandler, setTranscodingHints, setTranscodingHints

Field Detail

KEY_GAMMA

public static final TranscodingHints.Key KEY_GAMMA

The gamma correction key.

Key:	KEY_GAMMA
Value:	Float
Default:	PNGEncodeParam.INTENT_PERCEPTUAL
Required:	No
Description:	Controls the gamma correction of the png image.

KEY_INDEXED

public static final TranscodingHints.Key KEY_INDEXED

The write a 256 color indexed image key.

Key:	KEY_INDEXED
Value:	Boolean
Default:	False
Required:	No
Description:	Turns on the reduction of the image to 256 colors. The resultant PNG will be an indexed PNG with 256 colors.

Constructor Detail

PNGTranscoder

public PNGTranscoder()

Constructs a new transcoder that produces png images.

Method Detail

createImage

public java.awt.image.BufferedImage createImage(int width,
                                                int height)

Creates a new ARGB image with the specified dimension.

Overrides:

createImage in class ImageTranscoder

Parameters:

width - the image width in pixels

height - the image height in pixels

writeImage

public void writeImage(java.awt.image.BufferedImage img,
                       TranscoderOutput output)
                throws TranscoderException

Writes the specified image to the specified output.

Overrides:

writeImage in class ImageTranscoder

Parameters:

img - the image to write

output - the output where to store the image

TranscoderException - if an error occured while storing the image