org.apache.fop.render.svg

Class SVGPainter

java.lang.Object

org.apache.fop.render.intermediate.AbstractIFPainter

org.apache.fop.render.svg.SVGPainter

All Implemented Interfaces:

IFPainter, SVGConstants, XMLConstants

public class SVGPainter
extends AbstractIFPainter
implements SVGConstants

IFPainter implementation that writes SVG.

Field Summary

Fields

Modifier and Type	Field and Description
protected GenerationHelperContentHandler	handler The SAX content handler that receives the generated XML events.

Fields inherited from class org.apache.fop.render.intermediate.AbstractIFPainter

INSTREAM_OBJECT_URI, state

Fields inherited from interface org.apache.fop.render.svg.SVGConstants

FILE_EXTENSION_SVG, MIME_SVG_PRINT, MIME_TYPE, NAMESPACE, SVG_ELEMENT

Fields inherited from interface org.apache.fop.util.XMLConstants

CDATA, XLINK_HREF, XLINK_NAMESPACE, XLINK_PREFIX, XML_NAMESPACE, XML_PREFIX, XML_SPACE, XMLNS_NAMESPACE_URI, XMLNS_PREFIX

Constructor Summary

Constructors

Constructor and Description
SVGPainter(AbstractSVGDocumentHandler parent, GenerationHelperContentHandler contentHandler) Main constructor.

Method Summary

Methods

Modifier and Type	Method and Description
void	clipRect(java.awt.Rectangle rect) Restricts the current clipping region with the given rectangle.
protected RenderingContext	createRenderingContext() Creates a new RenderingContext instance.
void	drawBorderRect(java.awt.Rectangle rect, BorderProps before, BorderProps after, BorderProps start, BorderProps end) Draws a border rectangle.
void	drawImage(org.w3c.dom.Document doc, java.awt.Rectangle rect) Draws an image (represented by a DOM document) inside a given rectangle.
void	drawImage(java.lang.String uri, java.awt.Rectangle rect) Draws an image identified by a URI inside a given rectangle.
void	drawLine(java.awt.Point start, java.awt.Point end, int width, java.awt.Color color, RuleStyle style) Draws a line.
void	drawText(int x, int y, int letterSpacing, int wordSpacing, int[][] dp, java.lang.String text) Draws text.
void	endGroup() Ends the current group and restores the previous coordinate system.
void	endViewport() Ends the current viewport and restores the previous coordinate system.
void	fillRect(java.awt.Rectangle rect, java.awt.Paint fill) Fills a rectangular area.
protected IFContext	getContext() Returns the intermediate format context object.
void	handleExtensionObject(java.lang.Object extension)
void	startGroup(java.awt.geom.AffineTransform transform) Starts a new group of graphical elements.
void	startGroup(java.awt.geom.AffineTransform[] transforms) Starts a new group of graphical elements.
void	startViewport(java.awt.geom.AffineTransform[] transforms, java.awt.Dimension size, java.awt.Rectangle clipRect) Starts a new viewport, establishing a new coordinate system.
void	startViewport(java.awt.geom.AffineTransform transform, java.awt.Dimension size, java.awt.Rectangle clipRect) Starts a new viewport, establishing a new coordinate system.

Methods inherited from class org.apache.fop.render.intermediate.AbstractIFPainter

createDefaultImageProcessingHints, drawImage, drawImage, drawImageUsingDocument, drawImageUsingImageHandler, drawImageUsingURI, getFopFactory, getImageInfo, getLineBoundingBox, getUserAgent, hasOnlySolidBorders, setFont, toPoints

Methods inherited from class java.lang.Object

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

Field Detail

handler

protected GenerationHelperContentHandler handler

The SAX content handler that receives the generated XML events.

Constructor Detail

SVGPainter

public SVGPainter(AbstractSVGDocumentHandler parent,
          GenerationHelperContentHandler contentHandler)

Main constructor.

Parameters:

parent - the parent document handler

contentHandler - the target SAX content handler

Method Detail

getContext

protected IFContext getContext()

Returns the intermediate format context object.

Specified by:

getContext in class AbstractIFPainter

Returns:

the context object

startViewport

public void startViewport(java.awt.geom.AffineTransform transform,
                 java.awt.Dimension size,
                 java.awt.Rectangle clipRect)
                   throws IFException

Starts a new viewport, establishing a new coordinate system. A viewport has a size and can optionally be clipped. Corresponds to SVG's svg element.

Specified by:

startViewport in interface IFPainter

Parameters:

transform - the transformation matrix establishing the new coordinate system

size - the size of the viewport

clipRect - the clipping rectangle (may be null)

Throws:

IFException - if an error occurs while handling this element

startViewport

public void startViewport(java.awt.geom.AffineTransform[] transforms,
                 java.awt.Dimension size,
                 java.awt.Rectangle clipRect)
                   throws IFException

Starts a new viewport, establishing a new coordinate system. A viewport has a size and can optionally be clipped. Corresponds to SVG's svg element.

Specified by:

startViewport in interface IFPainter

Overrides:

startViewport in class AbstractIFPainter

Parameters:

transforms - a series of transformation matrices establishing the new coordinate system

size - the size of the viewport

clipRect - the clipping rectangle (may be null)

Throws:

IFException - if an error occurs while handling this element

endViewport

public void endViewport()
                 throws IFException

Ends the current viewport and restores the previous coordinate system.

Specified by:

endViewport in interface IFPainter

Throws:

IFException - if an error occurs while handling this element

startGroup

public void startGroup(java.awt.geom.AffineTransform[] transforms)
                throws IFException

Starts a new group of graphical elements. Corresponds to SVG's g element.

Specified by:

startGroup in interface IFPainter

Overrides:

startGroup in class AbstractIFPainter

Parameters:

transforms - a series of transformation matrices establishing the new coordinate system

Throws:

IFException - if an error occurs while handling this element

startGroup

public void startGroup(java.awt.geom.AffineTransform transform)
                throws IFException

Starts a new group of graphical elements. Corresponds to SVG's g element.

Specified by:

startGroup in interface IFPainter

Parameters:

transform - the transformation matrix establishing the new coordinate system

Throws:

IFException - if an error occurs while handling this element

endGroup

public void endGroup()
              throws IFException

Ends the current group and restores the previous coordinate system.

Specified by:

endGroup in interface IFPainter

Throws:

IFException - if an error occurs while handling this element

drawImage

public void drawImage(java.lang.String uri,
             java.awt.Rectangle rect)
               throws IFException

Draws an image identified by a URI inside a given rectangle. This is the equivalent to an fo:external-graphic in XSL-FO.

Specified by:

drawImage in interface IFPainter

Parameters:

uri - the image's URI

rect - the rectangle in which the image shall be painted

Throws:

IFException - if an error occurs while handling this event

drawImage

public void drawImage(org.w3c.dom.Document doc,
             java.awt.Rectangle rect)
               throws IFException

Draws an image (represented by a DOM document) inside a given rectangle. This is the equivalent to an fo:instream-foreign-object in XSL-FO.

Specified by:

drawImage in interface IFPainter

Parameters:

doc - the DOM document containing the foreign object

rect - the rectangle in which the image shall be painted

Throws:

IFException - if an error occurs while handling this event

createRenderingContext

protected RenderingContext createRenderingContext()

Creates a new RenderingContext instance.

Specified by:

createRenderingContext in class AbstractIFPainter

Returns:

the new rendering context.

clipRect

public void clipRect(java.awt.Rectangle rect)
              throws IFException

Restricts the current clipping region with the given rectangle.

Specified by:

clipRect in interface IFPainter

Parameters:

rect - the rectangle's coordinates and extent

Throws:

IFException - if an error occurs while handling this event

fillRect

public void fillRect(java.awt.Rectangle rect,
            java.awt.Paint fill)
              throws IFException

Fills a rectangular area.

Specified by:

fillRect in interface IFPainter

Parameters:

rect - the rectangle's coordinates and extent

fill - the fill paint

Throws:

IFException - if an error occurs while handling this event

drawBorderRect

public void drawBorderRect(java.awt.Rectangle rect,
                  BorderProps before,
                  BorderProps after,
                  BorderProps start,
                  BorderProps end)
                    throws IFException

Draws a border rectangle. The border segments are specified through BorderProps instances.

Specified by:

drawBorderRect in interface IFPainter

Overrides:

drawBorderRect in class AbstractIFPainter

Parameters:

rect - the rectangle's coordinates and extent

before - the border segment on the top edge

after - the border segment on the bottom edge

start - the border segment on the left edge

end - the border segment on the right edge

Throws:

IFException - if an error occurs while handling this event

drawLine

public void drawLine(java.awt.Point start,
            java.awt.Point end,
            int width,
            java.awt.Color color,
            RuleStyle style)
              throws IFException

Draws a line. NOTE: Currently, only horizontal lines are implemented!

Specified by:

drawLine in interface IFPainter

Overrides:

drawLine in class AbstractIFPainter

Parameters:

start - the start point of the line

end - the end point of the line

width - the line width

color - the line color

style - the line style (using the Constants.EN_* constants for the rule-style property)

Throws:

IFException - if an error occurs while handling this event

drawText

public void drawText(int x,
            int y,
            int letterSpacing,
            int wordSpacing,
            int[][] dp,
            java.lang.String text)
              throws IFException

Draws text. The initial coordinates (x and y) point to the starting point at the normal baseline of the font. The parameters letterSpacing, wordSpacing and the array dx are optional and can be used to influence character positioning (for example, for kerning).

Specified by:

drawText in interface IFPainter

Parameters:

x - X-coordinate of the starting point of the text

y - Y-coordinate of the starting point of the text

letterSpacing - additional spacing between characters (may be 0)

wordSpacing - additional spacing between words (may be 0)

dp - an array of 4-tuples, expressing [X,Y] placment adjustments and [X,Y] advancement adjustments, in that order (may be null); if not null, then adjustments.length must be the same as text.length()

text - the text

Throws:

IFException - if an error occurs while handling this event

handleExtensionObject

public void handleExtensionObject(java.lang.Object extension)
                           throws IFException

Parameters:

extension - an extension object

Throws:

IFException - if not caught