Class AbstractPSTranscoder

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.fop.svg.AbstractFOPTranscoder

org.apache.fop.render.ps.AbstractPSTranscoder

All Implemented Interfaces:

org.apache.batik.transcoder.Transcoder, Configurable

Direct Known Subclasses:

EPSTranscoder, PSTranscoder

public abstract class AbstractPSTranscoder
extends AbstractFOPTranscoder

This class enables to transcode an input to a PostScript document.

Two transcoding hints (KEY_WIDTH and KEY_HEIGHT) can be used to respectively specify the image width and the image height. If only one of these keys is specified, the transcoder preserves the aspect ratio of the original image.

The KEY_BACKGROUND_COLOR defines the background color to use for opaque image formats, or the background color that may be used for image formats that support alpha channel.

The KEY_AOI represents the area of interest to paint in device space.

Three additional transcoding hints that act on the SVG processor can be specified:

KEY_LANGUAGE to set the default language to use (may be used by a <switch> SVG element for example), KEY_USER_STYLESHEET_URI to fix the URI of a user stylesheet, and KEY_PIXEL_TO_MM to specify the pixel to millimeter conversion factor.

This work was authored by Keiron Liddle (keiron@aftexsw.com).

Nested Class Summary

Nested classes/interfaces inherited from class AbstractFOPTranscoder

AbstractFOPTranscoder.FOPErrorHandler, AbstractFOPTranscoder.FOPTranscoderUserAgent

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

org.apache.batik.transcoder.SVGAbstractTranscoder.SVGAbstractTranscoderUserAgent

Field Summary

Fields

Modifier and Type	Field	Description
private FontInfo	fontInfo
protected org.apache.xmlgraphics.java2d.ps.AbstractPSDocumentGraphics2D	graphics	the root Graphics2D instance for generating PostScript

Fields inherited from class AbstractFOPTranscoder

KEY_AUTO_FONTS, KEY_DEVICE_RESOLUTION, KEY_STROKE_TEXT, VALUE_FORMAT_OFF, VALUE_FORMAT_ON

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

builder, ctx, curAOI, curTxf, DEFAULT_ALLOWED_SCRIPT_TYPES, DEFAULT_DEFAULT_FONT_FAMILY, height, KEY_ALLOW_EXTERNAL_RESOURCES, 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_SNAPSHOT_TIME, 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

Constructors

Constructor	Description
AbstractPSTranscoder()	Constructs a new AbstractPSTranscoder.

Method Summary

Modifier and Type	Method	Description
protected org.apache.batik.bridge.BridgeContext	createBridgeContext()
org.apache.batik.bridge.BridgeContext	createBridgeContext(String version)
protected abstract org.apache.xmlgraphics.java2d.ps.AbstractPSDocumentGraphics2D	createDocumentGraphics2D()	Creates the root Graphics2D instance for generating PostScript.
protected boolean	getAutoFontsDefault()	Returns the default value for the KEY_AUTO_FONTS value.
protected void	transcode(Document document, String uri, org.apache.batik.transcoder.TranscoderOutput output)	Transcodes the specified Document as an image in the specified output.

Methods inherited from class AbstractFOPTranscoder

configure, createDocumentFactory, createUserAgent, getDeviceResolution, getEffectiveConfiguration, getImageManager, getImageSessionContext, getLogger, isTextStroked, setEntityResolver, setLogger, setupImageInfrastructure

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

createBridgeContext, getCanvasGraphicsNode, setImageSize, transcode

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

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

Methods inherited from class 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 Details

graphics

protected org.apache.xmlgraphics.java2d.ps.AbstractPSDocumentGraphics2D graphics

the root Graphics2D instance for generating PostScript

fontInfo

private FontInfo fontInfo

Constructor Details

AbstractPSTranscoder

public AbstractPSTranscoder()

Constructs a new AbstractPSTranscoder.

Method Details

createDocumentGraphics2D

protected abstract org.apache.xmlgraphics.java2d.ps.AbstractPSDocumentGraphics2D createDocumentGraphics2D()

Creates the root Graphics2D instance for generating PostScript.

Returns:

the root Graphics2D

getAutoFontsDefault

protected boolean getAutoFontsDefault()

Returns the default value for the KEY_AUTO_FONTS value.

Overrides:

getAutoFontsDefault in class AbstractFOPTranscoder

Returns:

the default value

transcode

protected void transcode(Document document,
 String uri,
 org.apache.batik.transcoder.TranscoderOutput output)
                  throws org.apache.batik.transcoder.TranscoderException

Transcodes the specified Document as an image in the specified output.

Overrides:

transcode in class org.apache.batik.transcoder.SVGAbstractTranscoder

Parameters:

document - the document to transcode

uri - the uri of the document or null if any

output - the ouput where to transcode

Throws:

org.apache.batik.transcoder.TranscoderException - if an error occured while transcoding

createBridgeContext

protected org.apache.batik.bridge.BridgeContext createBridgeContext()

Overrides:

createBridgeContext in class org.apache.batik.transcoder.SVGAbstractTranscoder

createBridgeContext

public org.apache.batik.bridge.BridgeContext createBridgeContext(String version)

Overrides:

createBridgeContext in class org.apache.batik.transcoder.SVGAbstractTranscoder