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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:

org.apache.batik.transcoder.Transcoder

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public class PNGTranscoder

extends ImageTranscoder

This class is an ImageTranscoder that produces a PNG image.

Version:

$Id: PNGTranscoder.java,v 1.23 2005/03/27 08:58:36 cam Exp $

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Nested Class Summary

 

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

org.apache.batik.transcoder.SVGAbstractTranscoder.SVGAbstractTranscoderUserAgent

 

Field Summary
static float[]	DEFAULT_CHROMA           The default Primary Chromaticities for sRGB imagery.
static org.apache.batik.transcoder.TranscodingHints.Key	KEY_GAMMA           The gamma correction key.
static org.apache.batik.transcoder.TranscodingHints.Key	KEY_INDEXED           The color indexed image key to specify number of colors used in palette.

 

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

builder, ctx, curAOI, curTxf, DEFAULT_ALLOWED_SCRIPT_TYPES, DEFAULT_DEFAULT_FONT_FAMILY, height, KEY_ALLOWED_SCRIPT_TYPES, KEY_ALTERNATE_STYLESHEET, KEY_AOI, KEY_CONSTRAIN_SCRIPT_ORIGIN, KEY_DEFAULT_FONT_FAMILY, KEY_EXECUTE_ONLOAD, KEY_HEIGHT, KEY_LANGUAGE, KEY_MAX_HEIGHT, KEY_MAX_WIDTH, 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, org.apache.batik.transcoder.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

createBridgeContext, createDocumentFactory, createUserAgent, getCanvasGraphicsNode, setImageSize, 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 org.apache.batik.transcoder.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. A value of zero for gamma disables the generation of a gamma chunk. No value causes an sRGB chunk to be generated.

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DEFAULT_CHROMA

public static final float[] DEFAULT_CHROMA

The default Primary Chromaticities for sRGB imagery.

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KEY_INDEXED

public static final org.apache.batik.transcoder.TranscodingHints.Key KEY_INDEXED

The color indexed image key to specify number of colors used in palette.

Key:	KEY_INDEXED
Value:	Integer
Default:	none/true color image
Required:	No
Description:	Turns on the reduction of the image to index colors by specifying color bit depth, 1,2,4,8. The resultant PNG will be an indexed PNG with color bit depth specified.

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.

Specified by:

createImage in class ImageTranscoder

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writeImage

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

Writes the specified image to the specified output.

Specified by:

writeImage in class ImageTranscoder

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