Package com.itextpdf.svg.processors.impl

Class DefaultSvgProcessor

java.lang.Object

com.itextpdf.svg.processors.impl.DefaultSvgProcessor

All Implemented Interfaces:

ISvgProcessor

public class DefaultSvgProcessor
extends java.lang.Object
implements ISvgProcessor

Default implementation of ISvgProcessor. This implementation traverses the INode tree depth-first, using a stack to recreate a tree of ISvgNodeRenderer with the same structure.

Field Summary

Fields

Modifier and Type	Field	Description
private SvgProcessorContext	context
private ICssResolver	cssResolver
private java.util.Map<java.lang.String,ISvgNodeRenderer>	namedObjects
private ProcessorState	processorState
private ISvgNodeRendererFactory	rendererFactory

Constructor Summary

Constructors

Constructor	Description
DefaultSvgProcessor()	Instantiates a DefaultSvgProcessor object.

Method Summary

Modifier and Type	Method	Description
private ISvgNodeRenderer	createResultAndClean()	Extract result from internal processorState and clean up afterwards
(package private) void	executeDepthFirstTraversal(INode startingNode)	Start the depth-first traversal of the INode tree, pushing the results on the stack
(package private) IElementNode	findFirstElement(INode node, java.lang.String tagName)	Find the first element in the node-tree that corresponds with the passed tag-name.
(package private) void	performSetup(INode root, ISvgConverterProperties converterProps)	Load in configuration, set initial processorState and create/fill-in context of the processor
ISvgProcessorResult	process(INode root, ISvgConverterProperties converterProps)	Process an SVG, returning the root of a renderer-tree and a list of named objects wrapped in a processor result object
private boolean	processAsText(INode node)	Check if this node is a text node that needs to be processed by the parent
private void	processText(ITextNode textNode)	Process the text contained in the text-node
private void	visit(INode node)	Recursive visit of the object tree, depth-first, processing the visited node and calling visit on its children.

Methods inherited from class java.lang.Object

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

Field Detail

processorState

private ProcessorState processorState

cssResolver

private ICssResolver cssResolver

rendererFactory

private ISvgNodeRendererFactory rendererFactory

namedObjects

private java.util.Map<java.lang.String,ISvgNodeRenderer> namedObjects

context

private SvgProcessorContext context

Constructor Detail

DefaultSvgProcessor

public DefaultSvgProcessor()

Instantiates a DefaultSvgProcessor object.

Method Detail

process

public ISvgProcessorResult process(INode root,
                                   ISvgConverterProperties converterProps)
                            throws SvgProcessingException

Description copied from interface: ISvgProcessor

Process an SVG, returning the root of a renderer-tree and a list of named objects wrapped in a processor result object

Specified by:

process in interface ISvgProcessor

Parameters:

root - Root of the INode representation of the SVG

converterProps - configuration properties

Returns:

root of the renderer-tree representing the SVG wrapped in {link ISvgProcessorResult}

Throws:

SvgProcessingException - throws an exception if the root node is null or if the child node being processed is null

performSetup

void performSetup(INode root,
                  ISvgConverterProperties converterProps)

Load in configuration, set initial processorState and create/fill-in context of the processor

Parameters:

converterProps - that contains configuration properties and operations

executeDepthFirstTraversal

void executeDepthFirstTraversal(INode startingNode)

Start the depth-first traversal of the INode tree, pushing the results on the stack

Parameters:

startingNode - node to start on

createResultAndClean

private ISvgNodeRenderer createResultAndClean()

Extract result from internal processorState and clean up afterwards

Returns:

Root renderer of the processed SVG

visit

private void visit(INode node)

Recursive visit of the object tree, depth-first, processing the visited node and calling visit on its children. Visit responsibilities for element nodes: - Assign styles(CSS and attributes) to element - Create Renderer based on element - push and pop renderer to stack Visit responsibilities for text nodes - add text to parent object

Parameters:

node - INode to visit

processAsText

private boolean processAsText(INode node)

Check if this node is a text node that needs to be processed by the parent

Parameters:

node - node to check

Returns:

true if the node should be processed as text, false otherwise

processText

private void processText(ITextNode textNode)

Process the text contained in the text-node

Parameters:

textNode - node containing text to process

findFirstElement

IElementNode findFirstElement(INode node,
                              java.lang.String tagName)

Find the first element in the node-tree that corresponds with the passed tag-name. Search is performed depth-first

Parameters:

node - root-node to start with

tagName - name of the tag that needs to be fonund

Returns:

IElementNode