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- /*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
- /* $Id$ */
-
- package org.apache.fop.area;
-
- import java.awt.Color;
- import java.awt.geom.Rectangle2D;
- import java.util.List;
- import java.util.Map;
- import java.util.Set;
- import java.util.Stack;
- import java.util.StringTokenizer;
-
- import javax.xml.transform.Source;
- import javax.xml.transform.Transformer;
- import javax.xml.transform.TransformerConfigurationException;
- import javax.xml.transform.TransformerException;
- import javax.xml.transform.dom.DOMResult;
- import javax.xml.transform.sax.SAXResult;
- import javax.xml.transform.sax.SAXTransformerFactory;
- import javax.xml.transform.sax.TransformerHandler;
-
- import org.w3c.dom.DOMImplementation;
- import org.w3c.dom.Document;
-
- import org.xml.sax.Attributes;
- import org.xml.sax.ContentHandler;
- import org.xml.sax.SAXException;
- import org.xml.sax.helpers.DefaultHandler;
-
- import org.apache.commons.logging.Log;
- import org.apache.commons.logging.LogFactory;
-
- import org.apache.xmlgraphics.image.loader.ImageInfo;
- import org.apache.xmlgraphics.image.loader.ImageManager;
- import org.apache.xmlgraphics.image.loader.ImageSessionContext;
- import org.apache.xmlgraphics.util.QName;
-
- import org.apache.fop.apps.FOUserAgent;
- import org.apache.fop.area.Trait.Background;
- import org.apache.fop.area.Trait.InternalLink;
- import org.apache.fop.area.inline.AbstractTextArea;
- import org.apache.fop.area.inline.Character;
- import org.apache.fop.area.inline.ForeignObject;
- import org.apache.fop.area.inline.Image;
- import org.apache.fop.area.inline.InlineArea;
- import org.apache.fop.area.inline.InlineBlockParent;
- import org.apache.fop.area.inline.InlineParent;
- import org.apache.fop.area.inline.Leader;
- import org.apache.fop.area.inline.Space;
- import org.apache.fop.area.inline.SpaceArea;
- import org.apache.fop.area.inline.TextArea;
- import org.apache.fop.area.inline.Viewport;
- import org.apache.fop.area.inline.WordArea;
- import org.apache.fop.fo.Constants;
- import org.apache.fop.fo.ElementMappingRegistry;
- import org.apache.fop.fo.expr.PropertyException;
- import org.apache.fop.fo.extensions.ExtensionAttachment;
- import org.apache.fop.fonts.Font;
- import org.apache.fop.fonts.FontInfo;
- import org.apache.fop.traits.BorderProps;
- import org.apache.fop.util.ColorUtil;
- import org.apache.fop.util.ContentHandlerFactory;
- import org.apache.fop.util.ContentHandlerFactoryRegistry;
- import org.apache.fop.util.DefaultErrorListener;
-
- /**
- * This is a parser for the area tree XML (intermediate format) which is used to reread an area
- * tree (or part of it) into memory again for rendering to the final output format.
- */
- public class AreaTreeParser {
-
- /** Logger instance */
- protected static Log log = LogFactory.getLog(AreaTreeParser.class);
-
- private static SAXTransformerFactory tFactory
- = (SAXTransformerFactory)SAXTransformerFactory.newInstance();
-
- /**
- * Parses an intermediate file (area tree XML) into an AreaTreeModel instance by adding
- * pages to it.
- * @param src the Source instance pointing to the intermediate file
- * @param treeModel the AreaTreeModel that the parsed pages are added to
- * @param userAgent the user agent
- * @throws TransformerException if an error occurs while parsing the area tree XML
- */
- public void parse(Source src, AreaTreeModel treeModel, FOUserAgent userAgent)
- throws TransformerException {
- Transformer transformer = tFactory.newTransformer();
- transformer.setErrorListener(new DefaultErrorListener(log));
-
- SAXResult res = new SAXResult(getContentHandler(treeModel, userAgent));
-
- transformer.transform(src, res);
- }
-
- /**
- * Creates a new ContentHandler instance that you can send the area tree XML to. The parsed
- * pages are added to the AreaTreeModel instance you pass in as a parameter.
- * @param treeModel the AreaTreeModel that the parsed pages are added to
- * @param userAgent the user agent
- * @return the ContentHandler instance to receive the SAX stream from the area tree XML
- */
- public ContentHandler getContentHandler(AreaTreeModel treeModel, FOUserAgent userAgent) {
- ElementMappingRegistry elementMappingRegistry
- = userAgent.getFactory().getElementMappingRegistry();
- return new Handler(treeModel, userAgent, elementMappingRegistry);
- }
-
- private static class Handler extends DefaultHandler {
-
- private Map makers = new java.util.HashMap();
-
- private AreaTreeModel treeModel;
- private FOUserAgent userAgent;
- private ElementMappingRegistry elementMappingRegistry;
-
- private Attributes lastAttributes;
- private StringBuffer content = new StringBuffer();
-
- private PageViewport currentPageViewport;
- private Map pageViewportsByKey = new java.util.HashMap();
- // set of "ID firsts" that have already been assigned to a PV:
- private Set idFirstsAssigned = new java.util.HashSet();
-
- private Stack areaStack = new Stack();
- private boolean firstFlow;
-
- private Stack delegateStack = new Stack();
- private ContentHandler delegate;
- private DOMImplementation domImplementation;
-
-
- public Handler(AreaTreeModel treeModel, FOUserAgent userAgent,
- ElementMappingRegistry elementMappingRegistry) {
- this.treeModel = treeModel;
- this.userAgent = userAgent;
- this.elementMappingRegistry = elementMappingRegistry;
- makers.put("areaTree", new AreaTreeMaker());
- makers.put("page", new PageMaker());
- makers.put("pageSequence", new PageSequenceMaker());
- makers.put("title", new TitleMaker());
- makers.put("pageViewport", new PageViewportMaker());
- makers.put("regionViewport", new RegionViewportMaker());
- makers.put("regionBefore", new RegionBeforeMaker());
- makers.put("regionAfter", new RegionAfterMaker());
- makers.put("regionStart", new RegionStartMaker());
- makers.put("regionEnd", new RegionEndMaker());
- makers.put("regionBody", new RegionBodyMaker());
- makers.put("flow", new FlowMaker());
- makers.put("mainReference", new MainReferenceMaker());
- makers.put("span", new SpanMaker());
- makers.put("footnote", new FootnoteMaker());
- makers.put("beforeFloat", new BeforeFloatMaker());
- makers.put("block", new BlockMaker());
- makers.put("lineArea", new LineAreaMaker());
- makers.put("inline", new InlineMaker());
- makers.put("inlineparent", new InlineParentMaker());
- makers.put("inlineblockparent", new InlineBlockParentMaker());
- makers.put("text", new TextMaker());
- makers.put("word", new WordMaker());
- makers.put("space", new SpaceMaker());
- makers.put("char", new CharMaker());
- makers.put("leader", new LeaderMaker());
- makers.put("viewport", new ViewportMaker());
- makers.put("image", new ImageMaker());
- makers.put("foreignObject", new ForeignObjectMaker());
- makers.put("bookmarkTree", new BookmarkTreeMaker());
- makers.put("bookmark", new BookmarkMaker());
- makers.put("destination", new DestinationMaker());
- }
-
- private static Rectangle2D parseRect(String rect) {
- StringTokenizer tokenizer = new StringTokenizer(rect, " ");
- return new Rectangle2D.Double(
- Double.parseDouble(tokenizer.nextToken()),
- Double.parseDouble(tokenizer.nextToken()),
- Double.parseDouble(tokenizer.nextToken()),
- Double.parseDouble(tokenizer.nextToken()));
- }
-
- private Area findAreaType(Class clazz) {
- if (areaStack.size() > 0) {
- int pos = areaStack.size() - 1;
- Object obj = null;
- while (pos >= 0 && !(clazz.isInstance(obj = areaStack.get(pos)))) {
- pos--;
- }
- if (pos >= 0) {
- return (Area)obj;
- }
- }
- return null;
- }
-
- private RegionViewport getCurrentRegionViewport() {
- return (RegionViewport)findAreaType(RegionViewport.class);
- }
-
- private BodyRegion getCurrentBodyRegion() {
- return (BodyRegion)findAreaType(BodyRegion.class);
- }
-
- private BlockParent getCurrentBlockParent() {
- return (BlockParent)findAreaType(BlockParent.class);
- }
-
- private AbstractTextArea getCurrentText() {
- return (AbstractTextArea)findAreaType(AbstractTextArea.class);
- }
-
- private Viewport getCurrentViewport() {
- return (Viewport)findAreaType(Viewport.class);
- }
-
- /** {@inheritDoc} */
- public void startElement(String uri, String localName, String qName, Attributes attributes)
- throws SAXException {
- if (delegate != null) {
- delegateStack.push(qName);
- delegate.startElement(uri, localName, qName, attributes);
- } else if (domImplementation != null) {
- //domImplementation is set so we need to start a new DOM building sub-process
- TransformerHandler handler;
- try {
- handler = tFactory.newTransformerHandler();
- } catch (TransformerConfigurationException e) {
- throw new SAXException("Error creating a new TransformerHandler", e);
- }
- Document doc = domImplementation.createDocument(uri, qName, null);
- //It's easier to work with an empty document, so remove the root element
- doc.removeChild(doc.getDocumentElement());
- handler.setResult(new DOMResult(doc));
- Area parent = (Area)areaStack.peek();
- ((ForeignObject)parent).setDocument(doc);
-
- //activate delegate for nested foreign document
- domImplementation = null; //Not needed anymore now
- this.delegate = handler;
- delegateStack.push(qName);
- delegate.startDocument();
- delegate.startElement(uri, localName, qName, attributes);
- } else {
- lastAttributes = attributes;
- boolean handled = true;
- if ("".equals(uri)) {
- Maker maker = (Maker)makers.get(localName);
- if (maker != null) {
- maker.startElement(attributes);
- } else if ("extension-attachments".equals(localName)) {
- //TODO implement me
- } else {
- handled = false;
- }
- } else {
- ContentHandlerFactoryRegistry registry
- = userAgent.getFactory().getContentHandlerFactoryRegistry();
- ContentHandlerFactory factory = registry.getFactory(uri);
- if (factory != null) {
- delegate = factory.createContentHandler();
- delegateStack.push(qName);
- delegate.startDocument();
- delegate.startElement(uri, localName, qName, attributes);
- } else {
- handled = false;
- }
- }
- if (!handled) {
- if (uri == null || uri.length() == 0) {
- throw new SAXException("Unhandled element " + localName
- + " in namespace: " + uri);
- } else {
- log.warn("Unhandled element " + localName
- + " in namespace: " + uri);
- }
- }
- }
- }
-
- /** {@inheritDoc} */
- public void endElement(String uri, String localName, String qName) throws SAXException {
- if (delegate != null) {
- delegate.endElement(uri, localName, qName);
- delegateStack.pop();
- if (delegateStack.size() == 0) {
- delegate.endDocument();
- if (delegate instanceof ContentHandlerFactory.ObjectSource) {
- Object obj = ((ContentHandlerFactory.ObjectSource)delegate).getObject();
- handleExternallyGeneratedObject(obj);
- }
- delegate = null; //Sub-document is processed, return to normal processing
- }
- } else {
- if ("".equals(uri)) {
- Maker maker = (Maker)makers.get(localName);
- if (maker != null) {
- maker.endElement();
- }
- } else {
- //log.debug("Ignoring " + localName + " in namespace: " + uri);
- }
- content.setLength(0); //Reset text buffer (see characters())
- }
- }
-
- // ============== Maker classes for the area tree objects =============
-
- private static interface Maker {
- void startElement(Attributes attributes) throws SAXException;
- void endElement();
- }
-
- private abstract class AbstractMaker implements Maker {
-
- public void startElement(Attributes attributes) throws SAXException {
- //nop
- }
-
- public void endElement() {
- //nop
- }
- }
-
- private class AreaTreeMaker extends AbstractMaker {
-
- public void startElement(Attributes attributes) {
- // In case the Handler is reused:
- idFirstsAssigned.clear();
- }
- }
-
- private class PageSequenceMaker extends AbstractMaker {
-
- public void startElement(Attributes attributes) {
- PageSequence pageSequence = new PageSequence(null);
- String lang = attributes.getValue("language");
- pageSequence.setLanguage(lang);
- String country = attributes.getValue("country");
- pageSequence.setCountry(country);
- areaStack.push(pageSequence);
- }
- }
-
- private class TitleMaker extends AbstractMaker {
-
- public void startElement(Attributes attributes) {
- LineArea line = new LineArea();
- transferForeignObjects(attributes, line);
- areaStack.push(line);
- }
-
- public void endElement() {
- LineArea line = (LineArea)areaStack.pop();
- PageSequence pageSequence = (PageSequence)areaStack.peek();
- pageSequence.setTitle(line);
- }
-
- }
-
- private class PageViewportMaker extends AbstractMaker {
-
- public void startElement(Attributes attributes) {
- if (!areaStack.isEmpty()) {
- PageSequence pageSequence = (PageSequence)areaStack.peek();
- treeModel.startPageSequence(pageSequence);
- areaStack.pop();
- }
- if (currentPageViewport != null) {
- throw new IllegalStateException("currentPageViewport must be null");
- }
- Rectangle2D viewArea = parseRect(attributes.getValue("bounds"));
- int pageNumber = getAttributeAsInteger(attributes, "nr", -1);
- String key = attributes.getValue("key");
- String pageNumberString = attributes.getValue("formatted-nr");
- String pageMaster = attributes.getValue("simple-page-master-name");
- boolean blank = getAttributeAsBoolean(attributes, "blank", false);
- currentPageViewport = new PageViewport(viewArea,
- pageNumber, pageNumberString,
- pageMaster, blank);
- transferForeignObjects(attributes, currentPageViewport);
- currentPageViewport.setKey(key);
- pageViewportsByKey.put(key, currentPageViewport);
- }
-
- }
-
- private class PageMaker extends AbstractMaker {
-
- public void startElement(Attributes attributes) {
- Page p = new Page();
- currentPageViewport.setPage(p);
- }
-
- public void endElement() {
- treeModel.addPage(currentPageViewport);
- currentPageViewport = null;
- }
- }
-
- private class RegionViewportMaker extends AbstractMaker {
-
- public void startElement(Attributes attributes) {
- RegionViewport rv = getCurrentRegionViewport();
- if (rv != null) {
- throw new IllegalStateException("Current RegionViewport must be null");
- }
- Rectangle2D viewArea = parseRect(attributes.getValue("rect"));
- rv = new RegionViewport(viewArea);
- transferForeignObjects(attributes, rv);
- rv.setClip(getAttributeAsBoolean(attributes, "clipped", false));
- setAreaAttributes(attributes, rv);
- setTraits(attributes, rv, SUBSET_COMMON);
- setTraits(attributes, rv, SUBSET_BOX);
- setTraits(attributes, rv, SUBSET_COLOR);
- areaStack.push(rv);
- }
-
- public void endElement() {
- assertObjectOfClass(areaStack.pop(), RegionViewport.class);
- }
- }
-
- private class RegionBeforeMaker extends AbstractMaker {
-
- public void startElement(Attributes attributes) {
- pushNewRegionReference(attributes, Constants.FO_REGION_BEFORE);
- }
-
- public void endElement() {
- assertObjectOfClass(areaStack.pop(), RegionReference.class);
- }
- }
-
- private class RegionAfterMaker extends AbstractMaker {
-
- public void startElement(Attributes attributes) {
- pushNewRegionReference(attributes, Constants.FO_REGION_AFTER);
- }
-
- public void endElement() {
- assertObjectOfClass(areaStack.pop(), RegionReference.class);
- }
- }
-
- private class RegionStartMaker extends AbstractMaker {
-
- public void startElement(Attributes attributes) {
- pushNewRegionReference(attributes, Constants.FO_REGION_START);
- }
-
- public void endElement() {
- assertObjectOfClass(areaStack.pop(), RegionReference.class);
- }
- }
-
- private class RegionEndMaker extends AbstractMaker {
-
- public void startElement(Attributes attributes) {
- pushNewRegionReference(attributes, Constants.FO_REGION_END);
- }
-
- public void endElement() {
- assertObjectOfClass(areaStack.pop(), RegionReference.class);
- }
- }
-
- private class RegionBodyMaker extends AbstractMaker {
-
- public void startElement(Attributes attributes) {
- BodyRegion body = getCurrentBodyRegion();
- if (body != null) {
- throw new IllegalStateException("Current BodyRegion must be null");
- }
- String regionName = attributes.getValue("name");
- int columnCount = getAttributeAsInteger(attributes, "columnCount", 1);
- int columnGap = getAttributeAsInteger(attributes, "columnGap", 0);
- RegionViewport rv = getCurrentRegionViewport();
- body = new BodyRegion(Constants.FO_REGION_BODY,
- regionName, rv, columnCount, columnGap);
- transferForeignObjects(attributes, body);
- body.setCTM(getAttributeAsCTM(attributes, "ctm"));
- setAreaAttributes(attributes, body);
- rv.setRegionReference(body);
- currentPageViewport.getPage().setRegionViewport(
- Constants.FO_REGION_BODY, rv);
- areaStack.push(body);
- }
-
- public void endElement() {
- assertObjectOfClass(areaStack.pop(), BodyRegion.class);
- }
- }
-
- private class FlowMaker extends AbstractMaker {
-
- public void startElement(Attributes attributes) {
- BodyRegion body = getCurrentBodyRegion();
- if (!firstFlow) {
- body.getMainReference().getCurrentSpan().moveToNextFlow();
- } else {
- firstFlow = false;
- }
- NormalFlow flow = body.getMainReference().getCurrentSpan().getCurrentFlow();
- transferForeignObjects(attributes, flow);
- setAreaAttributes(attributes, flow);
- areaStack.push(flow);
- }
-
- public void endElement() {
- assertObjectOfClass(areaStack.pop(), NormalFlow.class);
- }
- }
-
- private class MainReferenceMaker extends AbstractMaker {
-
- public void startElement(Attributes attributes) {
- //mainReference is created by the BodyRegion
- MainReference mr = getCurrentBodyRegion().getMainReference();
- transferForeignObjects(attributes, mr);
- setAreaAttributes(attributes, mr);
- }
- }
-
- private class SpanMaker extends AbstractMaker {
-
- public void startElement(Attributes attributes) {
- int ipd = getAttributeAsInteger(attributes, "ipd", 0);
- int columnCount = getAttributeAsInteger(attributes, "columnCount", 1);
- BodyRegion body = getCurrentBodyRegion();
- Span span = new Span(columnCount,
- body.getColumnGap(), ipd);
- transferForeignObjects(attributes, span);
- setAreaAttributes(attributes, span);
- body.getMainReference().getSpans().add(span);
- firstFlow = true;
- }
- }
-
- private class FootnoteMaker extends AbstractMaker {
-
- public void startElement(Attributes attributes) {
- Footnote fn = getCurrentBodyRegion().getFootnote();
- transferForeignObjects(attributes, fn);
- areaStack.push(fn);
- }
-
- public void endElement() {
- assertObjectOfClass(areaStack.pop(), Footnote.class);
- }
- }
-
- private class BeforeFloatMaker extends AbstractMaker {
-
- public void startElement(Attributes attributes) {
- BeforeFloat bf = getCurrentBodyRegion().getBeforeFloat();
- transferForeignObjects(attributes, bf);
- areaStack.push(bf);
- }
-
- public void endElement() {
- assertObjectOfClass(areaStack.pop(), BeforeFloat.class);
- }
- }
-
- private class BlockMaker extends AbstractMaker {
-
- public void startElement(Attributes attributes) {
- boolean isViewport = getAttributeAsBoolean(attributes,
- "is-viewport-area", false);
- Block block;
- if (isViewport) {
- BlockViewport bv = new BlockViewport();
- bv.setClip(getAttributeAsBoolean(attributes, "clipped", false));
- bv.setCTM(getAttributeAsCTM(attributes, "ctm"));
- if (bv.getPositioning() != BlockViewport.RELATIVE) {
- bv.setXOffset(
- getAttributeAsInteger(attributes, "left-position", 0));
- bv.setYOffset(
- getAttributeAsInteger(attributes, "top-position", 0));
- }
- block = bv;
- } else {
- block = new Block();
- }
- String positioning = attributes.getValue("positioning");
- if ("absolute".equalsIgnoreCase(positioning)) {
- block.setPositioning(Block.ABSOLUTE);
- } else if ("fixed".equalsIgnoreCase(positioning)) {
- block.setPositioning(Block.FIXED);
- } else if ("relative".equalsIgnoreCase(positioning)) {
- block.setPositioning(Block.RELATIVE);
- } else {
- block.setPositioning(Block.STACK);
- }
- if (attributes.getValue("left-offset") != null) {
- block.setXOffset(getAttributeAsInteger(attributes, "left-offset", 0));
- }
- if (attributes.getValue("top-offset") != null) {
- block.setYOffset(getAttributeAsInteger(attributes, "top-offset", 0));
- }
- transferForeignObjects(attributes, block);
- setAreaAttributes(attributes, block);
- setTraits(attributes, block, SUBSET_COMMON);
- setTraits(attributes, block, SUBSET_BOX);
- setTraits(attributes, block, SUBSET_COLOR);
- Area parent = (Area)areaStack.peek();
- //BlockParent parent = getCurrentBlockParent();
- parent.addChildArea(block);
- areaStack.push(block);
- }
-
- public void endElement() {
- assertObjectOfClass(areaStack.pop(), Block.class);
- }
- }
-
- private class LineAreaMaker extends AbstractMaker {
-
- public void startElement(Attributes attributes) {
- LineArea line = new LineArea();
- setAreaAttributes(attributes, line);
- setTraits(attributes, line, SUBSET_COMMON);
- setTraits(attributes, line, SUBSET_BOX);
- setTraits(attributes, line, SUBSET_COLOR);
- BlockParent parent = getCurrentBlockParent();
- parent.addChildArea(line);
- areaStack.push(line);
- }
-
- public void endElement() {
- assertObjectOfClass(areaStack.pop(), LineArea.class);
- }
- }
-
- // Maker for "generic" inline areas
- private class InlineMaker extends AbstractMaker {
-
- public void startElement(Attributes attributes) {
- InlineArea inl = new InlineArea();
- transferForeignObjects(attributes, inl);
- inl.setOffset(getAttributeAsInteger(attributes, "offset", 0));
- setAreaAttributes(attributes, inl);
- setTraits(attributes, inl, SUBSET_COMMON);
- setTraits(attributes, inl, SUBSET_BOX);
- setTraits(attributes, inl, SUBSET_COLOR);
- Area parent = (Area)areaStack.peek();
- parent.addChildArea(inl);
- areaStack.push(inl);
- }
-
- public void endElement() {
- assertObjectOfClass(areaStack.pop(), InlineArea.class);
- }
- }
-
- private class InlineParentMaker extends AbstractMaker {
-
- public void startElement(Attributes attributes) {
- InlineParent ip = new InlineParent();
- transferForeignObjects(attributes, ip);
- ip.setOffset(getAttributeAsInteger(attributes, "offset", 0));
- setAreaAttributes(attributes, ip);
- setTraits(attributes, ip, SUBSET_COMMON);
- setTraits(attributes, ip, SUBSET_BOX);
- setTraits(attributes, ip, SUBSET_COLOR);
- setTraits(attributes, ip, SUBSET_LINK);
- Area parent = (Area)areaStack.peek();
- parent.addChildArea(ip);
- areaStack.push(ip);
- }
-
- public void endElement() {
- assertObjectOfClass(areaStack.pop(), InlineParent.class);
- }
- }
-
- private class InlineBlockParentMaker extends AbstractMaker {
-
- public void startElement(Attributes attributes) {
- InlineBlockParent ibp = new InlineBlockParent();
- transferForeignObjects(attributes, ibp);
- ibp.setOffset(getAttributeAsInteger(attributes, "offset", 0));
- setAreaAttributes(attributes, ibp);
- setTraits(attributes, ibp, SUBSET_COMMON);
- setTraits(attributes, ibp, SUBSET_BOX);
- setTraits(attributes, ibp, SUBSET_COLOR);
- Area parent = (Area)areaStack.peek();
- parent.addChildArea(ibp);
- areaStack.push(ibp);
- }
-
- public void endElement() {
- assertObjectOfClass(areaStack.pop(), InlineBlockParent.class);
- }
- }
-
- private class TextMaker extends AbstractMaker {
-
- public void startElement(Attributes attributes) {
- if (getCurrentText() != null) {
- throw new IllegalStateException("Current Text must be null");
- }
- TextArea text = new TextArea();
- setAreaAttributes(attributes, text);
- setTraits(attributes, text, SUBSET_COMMON);
- setTraits(attributes, text, SUBSET_BOX);
- setTraits(attributes, text, SUBSET_COLOR);
- setTraits(attributes, text, SUBSET_FONT);
- text.setBaselineOffset(getAttributeAsInteger(attributes, "baseline", 0));
- text.setOffset(getAttributeAsInteger(attributes, "offset", 0));
- text.setTextLetterSpaceAdjust(getAttributeAsInteger(attributes,
- "tlsadjust", 0));
- text.setTextWordSpaceAdjust(getAttributeAsInteger(attributes,
- "twsadjust", 0));
- Area parent = (Area)areaStack.peek();
- parent.addChildArea(text);
- areaStack.push(text);
- }
-
- public void endElement() {
- assertObjectOfClass(areaStack.pop(), TextArea.class);
- }
- }
-
- private class WordMaker extends AbstractMaker {
-
- private int[] toIntArray(String s) {
- if (s == null || s.length() == 0) {
- return null;
- }
- StringTokenizer tokenizer = new StringTokenizer(s, " ");
- List values = new java.util.ArrayList();
- while (tokenizer.hasMoreTokens()) {
- values.add(new Integer(tokenizer.nextToken()));
- }
- int[] res = new int[values.size()];
- for (int i = 0, c = res.length; i < c; i++) {
- res[i] = ((Integer)values.get(i)).intValue();
- }
- return res;
- }
-
- public void endElement() {
- int offset = getAttributeAsInteger(lastAttributes, "offset", 0);
- int[] letterAdjust = toIntArray(lastAttributes.getValue("letter-adjust"));
- String txt = content.toString();
- WordArea word = new WordArea(txt, offset, letterAdjust);
- AbstractTextArea text = getCurrentText();
- word.setParentArea(text);
- text.addChildArea(word);
- }
- }
-
- private class SpaceMaker extends AbstractMaker {
-
- public void endElement() {
- int offset = getAttributeAsInteger(lastAttributes, "offset", 0);
- String txt = content.toString();
- //TODO the isAdjustable parameter is currently not used/implemented
- if (txt.length() > 0) {
- boolean adjustable = getAttributeAsBoolean(lastAttributes, "adj", true);
- SpaceArea space = new SpaceArea(txt.charAt(0), offset, adjustable);
- AbstractTextArea text = getCurrentText();
- space.setParentArea(text);
- text.addChildArea(space);
- } else {
- Space space = new Space();
- setAreaAttributes(lastAttributes, space);
- setTraits(lastAttributes, space, SUBSET_COMMON);
- setTraits(lastAttributes, space, SUBSET_BOX);
- setTraits(lastAttributes, space, SUBSET_COLOR);
- space.setOffset(offset);
- Area parent = (Area)areaStack.peek();
- parent.addChildArea(space);
- }
- }
- }
-
- private class CharMaker extends AbstractMaker {
-
- public void endElement() {
- String txt = content.toString();
- Character ch = new Character(txt.charAt(0));
- transferForeignObjects(lastAttributes, ch);
- setAreaAttributes(lastAttributes, ch);
- setTraits(lastAttributes, ch, SUBSET_COMMON);
- setTraits(lastAttributes, ch, SUBSET_BOX);
- setTraits(lastAttributes, ch, SUBSET_COLOR);
- setTraits(lastAttributes, ch, SUBSET_FONT);
- ch.setOffset(getAttributeAsInteger(lastAttributes, "offset", 0));
- ch.setBaselineOffset(getAttributeAsInteger(lastAttributes, "baseline", 0));
- Area parent = (Area)areaStack.peek();
- parent.addChildArea(ch);
- }
- }
-
- private class LeaderMaker extends AbstractMaker {
-
- public void startElement(Attributes attributes) {
- Leader leader = new Leader();
- transferForeignObjects(attributes, leader);
- setAreaAttributes(attributes, leader);
- setTraits(attributes, leader, SUBSET_COMMON);
- setTraits(attributes, leader, SUBSET_BOX);
- setTraits(attributes, leader, SUBSET_COLOR);
- setTraits(attributes, leader, SUBSET_FONT);
- leader.setOffset(getAttributeAsInteger(attributes, "offset", 0));
- String ruleStyle = attributes.getValue("ruleStyle");
- if (ruleStyle != null) {
- leader.setRuleStyle(ruleStyle);
- }
- leader.setRuleThickness(
- getAttributeAsInteger(attributes, "ruleThickness", 0));
- Area parent = (Area)areaStack.peek();
- parent.addChildArea(leader);
- }
-
- public void endElement() {
- }
- }
-
- private class ViewportMaker extends AbstractMaker {
-
- public void startElement(Attributes attributes) {
- Viewport viewport = new Viewport(null);
- transferForeignObjects(attributes, viewport);
- setAreaAttributes(attributes, viewport);
- setTraits(attributes, viewport, SUBSET_COMMON);
- setTraits(attributes, viewport, SUBSET_BOX);
- setTraits(attributes, viewport, SUBSET_COLOR);
- viewport.setContentPosition(getAttributeAsRectangle2D(attributes, "pos"));
- viewport.setClip(getAttributeAsBoolean(attributes, "clip", false));
- viewport.setOffset(getAttributeAsInteger(attributes, "offset", 0));
- Area parent = (Area)areaStack.peek();
- parent.addChildArea(viewport);
- areaStack.push(viewport);
- }
-
- public void endElement() {
- assertObjectOfClass(areaStack.pop(), Viewport.class);
- }
- }
-
- private class ImageMaker extends AbstractMaker {
-
- public void startElement(Attributes attributes) {
- String url = attributes.getValue("url");
- Image image = new Image(url);
- transferForeignObjects(attributes, image);
- setAreaAttributes(attributes, image);
- setTraits(attributes, image, SUBSET_COMMON);
- getCurrentViewport().setContent(image);
- }
- }
-
- private class ForeignObjectMaker extends AbstractMaker {
-
- public void startElement(Attributes attributes) throws SAXException {
- String ns = attributes.getValue("ns");
- domImplementation
- = elementMappingRegistry.getDOMImplementationForNamespace(ns);
- if (domImplementation == null) {
- throw new SAXException("No DOMImplementation could be"
- + " identified to handle namespace: " + ns);
- }
- ForeignObject foreign = new ForeignObject(ns);
- transferForeignObjects(attributes, foreign);
- setAreaAttributes(attributes, foreign);
- setTraits(attributes, foreign, SUBSET_COMMON);
- getCurrentViewport().setContent(foreign);
- areaStack.push(foreign);
- }
-
- public void endElement() {
- assertObjectOfClass(areaStack.pop(), ForeignObject.class);
- }
- }
-
- private class BookmarkTreeMaker extends AbstractMaker {
-
- public void startElement(Attributes attributes) {
- BookmarkData bm = new BookmarkData();
- areaStack.push(bm);
- }
-
- public void endElement() {
- Object tos = areaStack.pop();
- assertObjectOfClass(tos, BookmarkData.class);
- treeModel.handleOffDocumentItem((BookmarkData) tos);
- // as long as the bookmark tree comes after the last PageViewport in the
- // area tree XML, we don't have to worry about resolved/unresolved. The
- // only resolution needed is the mapping of the pvKey to the PV instance.
- }
- }
-
- private class BookmarkMaker extends AbstractMaker {
-
- public void startElement(Attributes attributes) {
- String title = attributes.getValue("title");
- boolean showChildren = getAttributeAsBoolean(attributes, "show-children", false);
- String[] linkdata
- = InternalLink.parseXMLAttribute(attributes.getValue("internal-link"));
- PageViewport pv = (PageViewport) pageViewportsByKey.get(linkdata[0]);
- BookmarkData bm = new BookmarkData(title, showChildren, pv, linkdata[1]);
- Object tos = areaStack.peek();
- if (tos instanceof BookmarkData) {
- BookmarkData parent = (BookmarkData) tos;
- parent.addSubData(bm);
- }
- areaStack.push(bm);
- }
-
- public void endElement() {
- assertObjectOfClass(areaStack.pop(), BookmarkData.class);
- }
- }
-
- private class DestinationMaker extends AbstractMaker {
-
- public void startElement(Attributes attributes) {
- String[] linkdata
- = InternalLink.parseXMLAttribute(lastAttributes.getValue("internal-link"));
- PageViewport pv = (PageViewport) pageViewportsByKey.get(linkdata[0]);
- DestinationData dest = new DestinationData(linkdata[1]);
- List pages = new java.util.ArrayList();
- pages.add(pv);
- dest.resolveIDRef(linkdata[1], pages);
- areaStack.push(dest);
- }
-
- public void endElement() {
- Object tos = areaStack.pop();
- assertObjectOfClass(tos, DestinationData.class);
- treeModel.handleOffDocumentItem((DestinationData) tos);
- }
- }
-
- // ====================================================================
-
-
- private void pushNewRegionReference(Attributes attributes, int side) {
- String regionName = attributes.getValue("name");
- RegionViewport rv = getCurrentRegionViewport();
- RegionReference reg = new RegionReference(side,
- regionName, rv);
- transferForeignObjects(attributes, reg);
- reg.setCTM(getAttributeAsCTM(attributes, "ctm"));
- setAreaAttributes(attributes, reg);
- rv.setRegionReference(reg);
- currentPageViewport.getPage().setRegionViewport(
- side, rv);
- areaStack.push(reg);
- }
-
- private void assertObjectOfClass(Object obj, Class clazz) {
- if (!clazz.isInstance(obj)) {
- throw new IllegalStateException("Object is not an instance of "
- + clazz.getName() + " but of " + obj.getClass().getName());
- }
- }
-
- /**
- * Handles objects created by "sub-parsers" that implement the ObjectSource interface.
- * An example of object handled here are ExtensionAttachments.
- * @param obj the Object to be handled.
- */
- protected void handleExternallyGeneratedObject(Object obj) {
- if (areaStack.size() == 0 && obj instanceof ExtensionAttachment) {
- ExtensionAttachment attachment = (ExtensionAttachment)obj;
- if (this.currentPageViewport == null) {
- this.treeModel.handleOffDocumentItem(
- new OffDocumentExtensionAttachment(attachment));
- } else {
- this.currentPageViewport.addExtensionAttachment(attachment);
- }
- } else {
- log.warn("Don't know how to handle externally generated object: " + obj);
- }
- }
-
- private void setAreaAttributes(Attributes attributes, Area area) {
- area.setIPD(Integer.parseInt(attributes.getValue("ipd")));
- area.setBPD(Integer.parseInt(attributes.getValue("bpd")));
- }
-
- private static final Object[] SUBSET_COMMON = new Object[] {
- Trait.PROD_ID};
- private static final Object[] SUBSET_LINK = new Object[] {
- Trait.INTERNAL_LINK, Trait.EXTERNAL_LINK};
- private static final Object[] SUBSET_COLOR = new Object[] {
- Trait.BACKGROUND, Trait.COLOR};
- private static final Object[] SUBSET_FONT = new Object[] {
- Trait.FONT, Trait.FONT_SIZE, Trait.BLINK,
- Trait.OVERLINE, Trait.OVERLINE_COLOR,
- Trait.LINETHROUGH, Trait.LINETHROUGH_COLOR,
- Trait.UNDERLINE, Trait.UNDERLINE_COLOR};
- private static final Object[] SUBSET_BOX = new Object[] {
- Trait.BORDER_BEFORE, Trait.BORDER_AFTER, Trait.BORDER_START, Trait.BORDER_END,
- Trait.SPACE_BEFORE, Trait.SPACE_AFTER, Trait.SPACE_START, Trait.SPACE_END,
- Trait.PADDING_BEFORE, Trait.PADDING_AFTER, Trait.PADDING_START, Trait.PADDING_END,
- Trait.START_INDENT, Trait.END_INDENT,
- Trait.IS_REFERENCE_AREA, Trait.IS_VIEWPORT_AREA};
-
- private void setTraits(Attributes attributes, Area area, Object[] traitSubset) {
- for (int i = 0, c = traitSubset.length; i < c; i++) {
- Object trait = traitSubset[i];
- String traitName = Trait.getTraitName(trait);
- String value = attributes.getValue(traitName);
- if (value != null) {
- Class cl = Trait.getTraitClass(trait);
- if (cl == Integer.class) {
- area.addTrait(trait, new Integer(value));
- } else if (cl == Boolean.class) {
- area.addTrait(trait, Boolean.valueOf(value));
- } else if (cl == String.class) {
- area.addTrait(trait, value);
- if (trait == Trait.PROD_ID
- && !idFirstsAssigned.contains(value)
- && currentPageViewport != null) {
- currentPageViewport.setFirstWithID(value);
- idFirstsAssigned.add(value);
- }
- } else if (cl == Color.class) {
- try {
- area.addTrait(trait, ColorUtil.parseColorString(this.userAgent, value));
- } catch (PropertyException e) {
- throw new IllegalArgumentException(e.getMessage());
- }
- } else if (cl == InternalLink.class) {
- area.addTrait(trait, new InternalLink(value));
- } else if (cl == Background.class) {
- Background bkg = new Background();
- try {
- Color col = ColorUtil.parseColorString(
- this.userAgent, attributes.getValue("bkg-color"));
- bkg.setColor(col);
- } catch (PropertyException e) {
- throw new IllegalArgumentException(e.getMessage());
- }
- String uri = attributes.getValue("bkg-img");
- if (uri != null) {
- bkg.setURL(uri);
-
- try {
- ImageManager manager = userAgent.getFactory().getImageManager();
- ImageSessionContext sessionContext
- = userAgent.getImageSessionContext();
- ImageInfo info = manager.getImageInfo(uri, sessionContext);
- bkg.setImageInfo(info);
- } catch (Exception e) {
- log.error("Background image not available: " + uri, e);
- }
-
- String repeat = attributes.getValue("bkg-repeat");
- if (repeat != null) {
- bkg.setRepeat(repeat);
- }
- bkg.setHoriz(getAttributeAsInteger(attributes,
- "bkg-horz-offset", 0));
- bkg.setVertical(getAttributeAsInteger(attributes,
- "bkg-vert-offset", 0));
- }
- area.addTrait(trait, bkg);
- } else if (cl == BorderProps.class) {
- area.addTrait(trait, BorderProps.valueOf(this.userAgent, value));
- }
- } else {
- if (trait == Trait.FONT) {
- String fontName = attributes.getValue("font-name");
- if (fontName != null) {
- String fontStyle = attributes.getValue("font-style");
- int fontWeight = getAttributeAsInteger(
- attributes, "font-weight", Font.WEIGHT_NORMAL);
- area.addTrait(trait,
- FontInfo.createFontKey(fontName, fontStyle, fontWeight));
- }
- }
- }
- }
- }
-
- private boolean getAttributeAsBoolean(Attributes attributes, String name,
- boolean defaultValue) {
- String s = attributes.getValue(name);
- if (s == null) {
- return defaultValue;
- } else {
- return Boolean.valueOf(s).booleanValue();
- }
- }
-
- private int getAttributeAsInteger(Attributes attributes, String name,
- int defaultValue) {
- String s = attributes.getValue(name);
- if (s == null) {
- return defaultValue;
- } else {
- return Integer.parseInt(s);
- }
- }
-
- private CTM getAttributeAsCTM(Attributes attributes, String name) {
- String s = attributes.getValue(name).trim();
- if (s.startsWith("[") && s.endsWith("]")) {
- s = s.substring(1, s.length() - 1);
- StringTokenizer tokenizer = new StringTokenizer(s, " ");
- double[] values = new double[] {
- Double.parseDouble(tokenizer.nextToken()),
- Double.parseDouble(tokenizer.nextToken()),
- Double.parseDouble(tokenizer.nextToken()),
- Double.parseDouble(tokenizer.nextToken()),
- Double.parseDouble(tokenizer.nextToken()),
- Double.parseDouble(tokenizer.nextToken())};
- return new CTM(values[0], values[1], values[2], values[3], values[4], values[5]);
- } else {
- throw new IllegalArgumentException("CTM must be surrounded by square brackets");
- }
- }
-
- private Rectangle2D getAttributeAsRectangle2D(Attributes attributes, String name) {
- String s = attributes.getValue(name).trim();
- StringTokenizer tokenizer = new StringTokenizer(s, " ");
- double[] values = new double[] {
- Double.parseDouble(tokenizer.nextToken()),
- Double.parseDouble(tokenizer.nextToken()),
- Double.parseDouble(tokenizer.nextToken()),
- Double.parseDouble(tokenizer.nextToken())};
- return new Rectangle2D.Double(values[0], values[1], values[2], values[3]);
- }
-
- private void transferForeignObjects(Attributes atts, AreaTreeObject ato) {
- for (int i = 0, c = atts.getLength(); i < c; i++) {
- String ns = atts.getURI(i);
- if (ns.length() > 0) {
- if ("http://www.w3.org/2000/xmlns/".equals(ns)) {
- continue;
- }
- QName qname = new QName(ns, atts.getQName(i));
- ato.setForeignAttribute(qname, atts.getValue(i));
- }
- }
- }
-
- /** {@inheritDoc} */
- public void characters(char[] ch, int start, int length) throws SAXException {
- if (delegate != null) {
- delegate.characters(ch, start, length);
- } else {
- content.append(ch, start, length);
- }
- }
-
- }
-
- }
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