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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.render.intermediate;
-
- import java.awt.Color;
- import java.awt.Dimension;
- import java.awt.Paint;
- import java.awt.Point;
- import java.awt.Rectangle;
- import java.awt.geom.AffineTransform;
- import java.util.Iterator;
- import java.util.List;
- import java.util.Locale;
- import java.util.Map;
-
- import org.w3c.dom.Document;
- import org.xml.sax.SAXException;
- import org.xml.sax.helpers.AttributesImpl;
-
- import org.apache.xmlgraphics.image.loader.ImageManager;
- import org.apache.xmlgraphics.image.loader.ImageSessionContext;
- import org.apache.xmlgraphics.util.QName;
- import org.apache.xmlgraphics.util.XMLizable;
-
- import org.apache.fop.accessibility.StructureTreeEventHandler;
- import org.apache.fop.fo.extensions.InternalElementMapping;
- import org.apache.fop.fonts.FontInfo;
- import org.apache.fop.render.DefaultRendererConfigurator;
- import org.apache.fop.render.RenderingContext;
- import org.apache.fop.render.intermediate.IFRendererConfig.IFRendererConfigParser;
- import org.apache.fop.render.intermediate.IFStructureTreeBuilder.IFStructureTreeElement;
- import org.apache.fop.render.intermediate.extensions.AbstractAction;
- import org.apache.fop.render.intermediate.extensions.Bookmark;
- import org.apache.fop.render.intermediate.extensions.BookmarkTree;
- import org.apache.fop.render.intermediate.extensions.DocumentNavigationExtensionConstants;
- import org.apache.fop.render.intermediate.extensions.Link;
- import org.apache.fop.render.intermediate.extensions.NamedDestination;
- import org.apache.fop.traits.BorderProps;
- import org.apache.fop.traits.RuleStyle;
- import org.apache.fop.util.ColorUtil;
- import org.apache.fop.util.DOM2SAX;
- import org.apache.fop.util.LanguageTags;
- import org.apache.fop.util.XMLConstants;
- import org.apache.fop.util.XMLUtil;
-
-
- /**
- * IFPainter implementation that serializes the intermediate format to XML.
- */
- public class IFSerializer extends AbstractXMLWritingIFDocumentHandler
- implements IFConstants, IFPainter, IFDocumentNavigationHandler {
-
- /**
- * Intermediate Format (IF) version, used to express an @version attribute
- * in the root element of the IF document, the initial value of which
- * is set to '2.0' to signify that something preceded it (but didn't
- * happen to be marked as such), and that this version is not necessarily
- * backwards compatible with the unmarked (<2.0) version.
- */
- public static final String VERSION = "2.0";
-
- private IFDocumentHandler mimicHandler;
- private int pageSequenceIndex; // used for accessibility
-
- /** Holds the intermediate format state */
- private IFState state;
-
- private String currentID = "";
-
- private IFStructureTreeBuilder structureTreeBuilder;
-
- public IFSerializer(IFContext context) {
- super(context);
- }
-
- /** {@inheritDoc} */
- @Override
- protected String getMainNamespace() {
- return NAMESPACE;
- }
-
- /** {@inheritDoc} */
- public boolean supportsPagesOutOfOrder() {
- return false;
- //Theoretically supported but disabled to improve performance when
- //rendering the IF to the final format later on
- }
-
- /** {@inheritDoc} */
- public String getMimeType() {
- return MIME_TYPE;
- }
-
- /** {@inheritDoc} */
- public IFDocumentHandlerConfigurator getConfigurator() {
- if (this.mimicHandler != null) {
- return getMimickedDocumentHandler().getConfigurator();
- } else {
- return new DefaultRendererConfigurator(getUserAgent(), new IFRendererConfigParser());
- }
- }
-
- /** {@inheritDoc} */
- @Override
- public IFDocumentNavigationHandler getDocumentNavigationHandler() {
- return this;
- }
-
- /**
- * Tells this serializer to mimic the given document handler (mostly applies to the font set
- * that is used during layout).
- * @param targetHandler the document handler to mimic
- */
- public void mimicDocumentHandler(IFDocumentHandler targetHandler) {
- this.mimicHandler = targetHandler;
- }
-
- /**
- * Returns the document handler that is being mimicked by this serializer.
- * @return the mimicked document handler or null if no such document handler has been set
- */
- public IFDocumentHandler getMimickedDocumentHandler() {
- return this.mimicHandler;
- }
-
- /** {@inheritDoc} */
- public FontInfo getFontInfo() {
- if (this.mimicHandler != null) {
- return this.mimicHandler.getFontInfo();
- } else {
- return null;
- }
- }
-
- /** {@inheritDoc} */
- public void setFontInfo(FontInfo fontInfo) {
- if (this.mimicHandler != null) {
- this.mimicHandler.setFontInfo(fontInfo);
- }
- }
-
- /** {@inheritDoc} */
- public void setDefaultFontInfo(FontInfo fontInfo) {
- if (this.mimicHandler != null) {
- this.mimicHandler.setDefaultFontInfo(fontInfo);
- }
- }
-
- @Override
- public StructureTreeEventHandler getStructureTreeEventHandler() {
- if (structureTreeBuilder == null) {
- structureTreeBuilder = new IFStructureTreeBuilder();
- }
- return structureTreeBuilder;
- }
-
- /** {@inheritDoc} */
- @Override
- public void startDocument() throws IFException {
- super.startDocument();
- try {
- handler.startDocument();
- handler.startPrefixMapping("", NAMESPACE);
- handler.startPrefixMapping(XLINK_PREFIX, XLINK_NAMESPACE);
- handler.startPrefixMapping(DocumentNavigationExtensionConstants.PREFIX,
- DocumentNavigationExtensionConstants.NAMESPACE);
- handler.startPrefixMapping(InternalElementMapping.STANDARD_PREFIX,
- InternalElementMapping.URI);
- AttributesImpl atts = new AttributesImpl();
- addAttribute(atts, "version", VERSION);
- handler.startElement(EL_DOCUMENT, atts);
- } catch (SAXException e) {
- throw new IFException("SAX error in startDocument()", e);
- }
- }
-
- @Override
- public void setDocumentLocale(Locale locale) {
- AttributesImpl atts = new AttributesImpl();
- atts.addAttribute(XML_NAMESPACE, "lang", "xml:lang", XMLUtil.CDATA,
- LanguageTags.toLanguageTag(locale));
- try {
- handler.startElement(EL_LOCALE, atts);
- handler.endElement(EL_LOCALE);
- } catch (SAXException e) {
- throw new RuntimeException("Unable to create the " + EL_LOCALE + " element.", e);
- }
- }
-
- /** {@inheritDoc} */
- @Override
- public void startDocumentHeader() throws IFException {
- try {
- handler.startElement(EL_HEADER);
- } catch (SAXException e) {
- throw new IFException("SAX error in startDocumentHeader()", e);
- }
- }
-
- /** {@inheritDoc} */
- @Override
- public void endDocumentHeader() throws IFException {
- try {
- handler.endElement(EL_HEADER);
- } catch (SAXException e) {
- throw new IFException("SAX error in startDocumentHeader()", e);
- }
- }
-
- /** {@inheritDoc} */
- @Override
- public void startDocumentTrailer() throws IFException {
- try {
- handler.startElement(EL_TRAILER);
- } catch (SAXException e) {
- throw new IFException("SAX error in startDocumentTrailer()", e);
- }
- }
-
- /** {@inheritDoc} */
- @Override
- public void endDocumentTrailer() throws IFException {
- try {
- handler.endElement(EL_TRAILER);
- } catch (SAXException e) {
- throw new IFException("SAX error in endDocumentTrailer()", e);
- }
- }
-
- /** {@inheritDoc} */
- public void endDocument() throws IFException {
- try {
- handler.endElement(EL_DOCUMENT);
- handler.endDocument();
- finishDocumentNavigation();
- } catch (SAXException e) {
- throw new IFException("SAX error in endDocument()", e);
- }
- }
-
- /** {@inheritDoc} */
- public void startPageSequence(String id) throws IFException {
- try {
- AttributesImpl atts = new AttributesImpl();
- if (id != null) {
- atts.addAttribute(XML_NAMESPACE, "id", "xml:id", XMLUtil.CDATA, id);
- }
- Locale lang = getContext().getLanguage();
- if (lang != null) {
- atts.addAttribute(XML_NAMESPACE, "lang", "xml:lang", XMLUtil.CDATA,
- LanguageTags.toLanguageTag(lang));
- }
- XMLUtil.addAttribute(atts, XMLConstants.XML_SPACE, "preserve");
- addForeignAttributes(atts);
- handler.startElement(EL_PAGE_SEQUENCE, atts);
- if (this.getUserAgent().isAccessibilityEnabled()) {
- assert (structureTreeBuilder != null);
- structureTreeBuilder.replayEventsForPageSequence(handler, pageSequenceIndex++);
- }
- } catch (SAXException e) {
- throw new IFException("SAX error in startPageSequence()", e);
- }
- }
-
- /** {@inheritDoc} */
- public void endPageSequence() throws IFException {
- try {
-
- handler.endElement(EL_PAGE_SEQUENCE);
- } catch (SAXException e) {
- throw new IFException("SAX error in endPageSequence()", e);
- }
- }
-
- /** {@inheritDoc} */
- public void startPage(int index, String name, String pageMasterName, Dimension size)
- throws IFException {
- try {
- AttributesImpl atts = new AttributesImpl();
- addAttribute(atts, "index", Integer.toString(index));
- addAttribute(atts, "name", name);
- if (pageMasterName != null) {
- //fox:external-document doesn't have a page-master
- addAttribute(atts, "page-master-name", pageMasterName);
- }
- addAttribute(atts, "width", Integer.toString(size.width));
- addAttribute(atts, "height", Integer.toString(size.height));
- addForeignAttributes(atts);
- getContext().setPageIndex(index);
- handler.startElement(EL_PAGE, atts);
- } catch (SAXException e) {
- throw new IFException("SAX error in startPage()", e);
- }
- }
-
- /** {@inheritDoc} */
- @Override
- public void startPageHeader() throws IFException {
- try {
- handler.startElement(EL_PAGE_HEADER);
- if (this.getUserAgent().isAccessibilityEnabled()) {
- structureTreeBuilder.replayEventsForRetrievedMarkers(handler);
- }
- } catch (SAXException e) {
- throw new IFException("SAX error in startPageHeader()", e);
- }
- }
-
- /** {@inheritDoc} */
- @Override
- public void endPageHeader() throws IFException {
- try {
- handler.endElement(EL_PAGE_HEADER);
- } catch (SAXException e) {
- throw new IFException("SAX error in endPageHeader()", e);
- }
- }
-
- /** {@inheritDoc} */
- public IFPainter startPageContent() throws IFException {
- try {
- handler.startElement(EL_PAGE_CONTENT);
- this.state = IFState.create();
- return this;
- } catch (SAXException e) {
- throw new IFException("SAX error in startPageContent()", e);
- }
- }
-
- /** {@inheritDoc} */
- public void endPageContent() throws IFException {
- try {
- this.state = null;
- currentID = "";
- handler.endElement(EL_PAGE_CONTENT);
- } catch (SAXException e) {
- throw new IFException("SAX error in endPageContent()", e);
- }
- }
-
- /** {@inheritDoc} */
- @Override
- public void startPageTrailer() throws IFException {
- try {
- handler.startElement(EL_PAGE_TRAILER);
- } catch (SAXException e) {
- throw new IFException("SAX error in startPageTrailer()", e);
- }
- }
-
- /** {@inheritDoc} */
- @Override
- public void endPageTrailer() throws IFException {
- try {
- commitNavigation();
- handler.endElement(EL_PAGE_TRAILER);
- } catch (SAXException e) {
- throw new IFException("SAX error in endPageTrailer()", e);
- }
- }
-
- /** {@inheritDoc} */
- public void endPage() throws IFException {
- try {
- handler.endElement(EL_PAGE);
- getContext().setPageIndex(-1);
- } catch (SAXException e) {
- throw new IFException("SAX error in endPage()", e);
- }
- }
-
- //---=== IFPainter ===---
-
- /** {@inheritDoc} */
- public void startViewport(AffineTransform transform, Dimension size, Rectangle clipRect)
- throws IFException {
- startViewport(IFUtil.toString(transform), size, clipRect);
- }
-
- /** {@inheritDoc} */
- public void startViewport(AffineTransform[] transforms, Dimension size, Rectangle clipRect)
- throws IFException {
- startViewport(IFUtil.toString(transforms), size, clipRect);
- }
-
- private void startViewport(String transform, Dimension size, Rectangle clipRect)
- throws IFException {
- try {
- AttributesImpl atts = new AttributesImpl();
- if (transform != null && transform.length() > 0) {
- addAttribute(atts, "transform", transform);
- }
- addAttribute(atts, "width", Integer.toString(size.width));
- addAttribute(atts, "height", Integer.toString(size.height));
- if (clipRect != null) {
- addAttribute(atts, "clip-rect", IFUtil.toString(clipRect));
- }
- handler.startElement(EL_VIEWPORT, atts);
- } catch (SAXException e) {
- throw new IFException("SAX error in startViewport()", e);
- }
- }
-
- /** {@inheritDoc} */
- public void endViewport() throws IFException {
- try {
- handler.endElement(EL_VIEWPORT);
- } catch (SAXException e) {
- throw new IFException("SAX error in endViewport()", e);
- }
- }
-
- /** {@inheritDoc} */
- public void startGroup(AffineTransform[] transforms, String layer) throws IFException {
- startGroup(IFUtil.toString(transforms), layer);
- }
-
- /** {@inheritDoc} */
- public void startGroup(AffineTransform transform, String layer) throws IFException {
- startGroup(IFUtil.toString(transform), layer);
- }
-
- private void startGroup(String transform, String layer) throws IFException {
- try {
- AttributesImpl atts = new AttributesImpl();
- if (transform != null && transform.length() > 0) {
- addAttribute(atts, "transform", transform);
- }
- if (layer != null && layer.length() > 0) {
- addAttribute(atts, "layer", layer);
- }
- handler.startElement(EL_GROUP, atts);
- } catch (SAXException e) {
- throw new IFException("SAX error in startGroup()", e);
- }
- }
-
- /** {@inheritDoc} */
- public void endGroup() throws IFException {
- try {
- handler.endElement(EL_GROUP);
- } catch (SAXException e) {
- throw new IFException("SAX error in endGroup()", e);
- }
- }
-
- /** {@inheritDoc} */
- public void drawImage(String uri, Rectangle rect) throws IFException {
- try {
- addID();
- AttributesImpl atts = new AttributesImpl();
- addAttribute(atts, XLINK_HREF, uri);
- addAttribute(atts, "x", Integer.toString(rect.x));
- addAttribute(atts, "y", Integer.toString(rect.y));
- addAttribute(atts, "width", Integer.toString(rect.width));
- addAttribute(atts, "height", Integer.toString(rect.height));
- addForeignAttributes(atts);
- addStructureReference(atts);
- handler.element(EL_IMAGE, atts);
- } catch (SAXException e) {
- throw new IFException("SAX error in startGroup()", e);
- } finally {
- ImageSessionContext session = getUserAgent().getImageSessionContext();
- ImageManager imageManager = getUserAgent().getImageManager();
- imageManager.closeImage(uri, session);
- }
- }
-
- private void addForeignAttributes(AttributesImpl atts) throws SAXException {
- Map foreignAttributes = getContext().getForeignAttributes();
- if (!foreignAttributes.isEmpty()) {
- for (Object o : foreignAttributes.entrySet()) {
- Map.Entry entry = (Map.Entry) o;
- addAttribute(atts, (QName) entry.getKey(), entry.getValue().toString());
- }
- }
- }
-
- /** {@inheritDoc} */
- public void drawImage(Document doc, Rectangle rect) throws IFException {
- try {
- addID();
- AttributesImpl atts = new AttributesImpl();
- addAttribute(atts, "x", Integer.toString(rect.x));
- addAttribute(atts, "y", Integer.toString(rect.y));
- addAttribute(atts, "width", Integer.toString(rect.width));
- addAttribute(atts, "height", Integer.toString(rect.height));
- addForeignAttributes(atts);
- addStructureReference(atts);
- handler.startElement(EL_IMAGE, atts);
- new DOM2SAX(handler).writeDocument(doc, true);
- handler.endElement(EL_IMAGE);
- } catch (SAXException e) {
- throw new IFException("SAX error in startGroup()", e);
- }
- }
-
- private static String toString(Paint paint) {
- if (paint instanceof Color) {
- return ColorUtil.colorToString((Color)paint);
- } else {
- throw new UnsupportedOperationException("Paint not supported: " + paint);
- }
- }
-
- /** {@inheritDoc} */
- public void clipRect(Rectangle rect) throws IFException {
- try {
- AttributesImpl atts = new AttributesImpl();
- addAttribute(atts, "x", Integer.toString(rect.x));
- addAttribute(atts, "y", Integer.toString(rect.y));
- addAttribute(atts, "width", Integer.toString(rect.width));
- addAttribute(atts, "height", Integer.toString(rect.height));
- handler.element(EL_CLIP_RECT, atts);
- } catch (SAXException e) {
- throw new IFException("SAX error in clipRect()", e);
- }
- }
-
- /** {@inheritDoc} */
- public void clipBackground(Rectangle rect, BorderProps bpsBefore, BorderProps bpsAfter,
- BorderProps bpsStart, BorderProps bpsEnd) throws IFException {
- try {
- AttributesImpl atts = new AttributesImpl();
- addAttribute(atts, "x", Integer.toString(rect.x));
- addAttribute(atts, "y", Integer.toString(rect.y));
- addAttribute(atts, "width", Integer.toString(rect.width));
- addAttribute(atts, "height", Integer.toString(rect.height));
- if (hasRoundedCorners(bpsBefore, bpsAfter, bpsStart, bpsEnd)) {
-
- if (bpsBefore != null) {
- addAttribute(atts, "top", bpsBefore.toString());
- }
- if (bpsAfter != null) {
- addAttribute(atts, "bottom", bpsAfter.toString());
- }
- if (bpsStart != null) {
- addAttribute(atts, "left", bpsStart.toString());
- }
- if (bpsEnd != null) {
- addAttribute(atts, "right", bpsEnd.toString());
- }
- }
- handler.element(EL_CLIP_RECT, atts);
- } catch (SAXException e) {
- throw new IFException("SAX error in clipRect()", e);
- }
- }
-
-
- /** {@inheritDoc} */
- public void fillRect(Rectangle rect, Paint fill) throws IFException {
- if (fill == null) {
- return;
- }
- try {
- AttributesImpl atts = new AttributesImpl();
- addAttribute(atts, "x", Integer.toString(rect.x));
- addAttribute(atts, "y", Integer.toString(rect.y));
- addAttribute(atts, "width", Integer.toString(rect.width));
- addAttribute(atts, "height", Integer.toString(rect.height));
- addAttribute(atts, "fill", toString(fill));
- handler.element(EL_RECT, atts);
- } catch (SAXException e) {
- throw new IFException("SAX error in fillRect()", e);
- }
- }
-
- //TODO create a class representing all borders should exist
- //with query methods like this
- private boolean hasRoundedCorners(BorderProps bpsBefore, BorderProps bpsAfter,
- BorderProps bpsStart, BorderProps bpsEnd) {
- boolean rtn = false;
-
- if (bpsBefore != null && bpsBefore.getRadiusStart() > 0
- && bpsStart != null && bpsStart.getRadiusStart() > 0) {
- rtn = true;
- }
-
- if (bpsBefore != null && bpsBefore.getRadiusEnd() > 0
- && bpsEnd != null && bpsEnd.getRadiusStart() > 0) {
- rtn = true;
- }
-
- if (bpsEnd != null && bpsEnd.getRadiusEnd() > 0
- && bpsAfter != null && bpsAfter.getRadiusEnd() > 0) {
- rtn = true;
- }
-
- if (bpsAfter != null && bpsAfter.getRadiusStart() > 0
- && bpsStart != null && bpsStart.getRadiusEnd() > 0) {
- rtn = true;
- }
-
- return rtn;
- }
-
- /** {@inheritDoc} */
- public void drawBorderRect(Rectangle rect, BorderProps top, BorderProps bottom,
- BorderProps left, BorderProps right, Color innerBackgroundColor) throws IFException {
- if (top == null && bottom == null && left == null && right == null) {
- return;
- }
- try {
- AttributesImpl atts = new AttributesImpl();
- addAttribute(atts, "x", Integer.toString(rect.x));
- addAttribute(atts, "y", Integer.toString(rect.y));
- addAttribute(atts, "width", Integer.toString(rect.width));
- addAttribute(atts, "height", Integer.toString(rect.height));
- if (top != null) {
- addAttribute(atts, "top", top.toString());
- }
- if (bottom != null) {
- addAttribute(atts, "bottom", bottom.toString());
- }
- if (left != null) {
- addAttribute(atts, "left", left.toString());
- }
- if (right != null) {
- addAttribute(atts, "right", right.toString());
- }
-
- if (innerBackgroundColor != null) {
- addAttribute(atts, "inner-background-color",
- ColorUtil.colorToString(innerBackgroundColor));
- }
-
- handler.element(EL_BORDER_RECT, atts);
- } catch (SAXException e) {
- throw new IFException("SAX error in drawBorderRect()", e);
- }
- }
-
- /** {@inheritDoc} */
- public void drawLine(Point start, Point end, int width, Color color, RuleStyle style)
- throws IFException {
- try {
- addID();
- AttributesImpl atts = new AttributesImpl();
- addAttribute(atts, "x1", Integer.toString(start.x));
- addAttribute(atts, "y1", Integer.toString(start.y));
- addAttribute(atts, "x2", Integer.toString(end.x));
- addAttribute(atts, "y2", Integer.toString(end.y));
- addAttribute(atts, "stroke-width", Integer.toString(width));
- addAttribute(atts, "color", ColorUtil.colorToString(color));
- addAttribute(atts, "style", style.getName());
- handler.element(EL_LINE, atts);
- } catch (SAXException e) {
- throw new IFException("SAX error in drawLine()", e);
- }
- }
-
- /** {@inheritDoc} */
- public void drawText(int x, int y, int letterSpacing, int wordSpacing,
- int[][] dp, String text) throws IFException {
- try {
- addID();
- AttributesImpl atts = new AttributesImpl();
- addAttribute(atts, "x", Integer.toString(x));
- addAttribute(atts, "y", Integer.toString(y));
- if (letterSpacing != 0) {
- addAttribute(atts, "letter-spacing", Integer.toString(letterSpacing));
- }
- if (wordSpacing != 0) {
- addAttribute(atts, "word-spacing", Integer.toString(wordSpacing));
- }
- if (dp != null) {
- if (IFUtil.isDPIdentity(dp)) {
- // don't add dx or dp attribute
- } else if (IFUtil.isDPOnlyDX(dp)) {
- // add dx attribute only
- int[] dx = IFUtil.convertDPToDX(dp);
- addAttribute(atts, "dx", IFUtil.toString(dx));
- } else {
- // add dp attribute only
- addAttribute(atts, "dp", XMLUtil.encodePositionAdjustments(dp));
- }
- }
- addStructureReference(atts);
- if (getContext().isHyphenated()) {
- addAttribute(atts, "hyphenated", "true");
- }
- handler.startElement(EL_TEXT, atts);
- char[] chars = text.toCharArray();
- handler.characters(chars, 0, chars.length);
- handler.endElement(EL_TEXT);
- } catch (SAXException e) {
- throw new IFException("SAX error in setFont()", e);
- }
- }
-
- /** {@inheritDoc} */
- public void setFont(String family, String style, Integer weight, String variant, Integer size,
- Color color) throws IFException {
- try {
- AttributesImpl atts = new AttributesImpl();
- boolean changed;
- if (family != null) {
- changed = !family.equals(state.getFontFamily());
- if (changed) {
- state.setFontFamily(family);
- addAttribute(atts, "family", family);
- }
- }
- if (style != null) {
- changed = !style.equals(state.getFontStyle());
- if (changed) {
- state.setFontStyle(style);
- addAttribute(atts, "style", style);
- }
- }
- if (weight != null) {
- changed = (weight != state.getFontWeight());
- if (changed) {
- state.setFontWeight(weight);
- addAttribute(atts, "weight", weight.toString());
- }
- }
- if (variant != null) {
- changed = !variant.equals(state.getFontVariant());
- if (changed) {
- state.setFontVariant(variant);
- addAttribute(atts, "variant", variant);
- }
- }
- if (size != null) {
- changed = (size != state.getFontSize());
- if (changed) {
- state.setFontSize(size);
- addAttribute(atts, "size", size.toString());
- }
- }
- if (color != null) {
- changed = !org.apache.xmlgraphics.java2d.color.ColorUtil.isSameColor(
- color, state.getTextColor());
- if (changed) {
- state.setTextColor(color);
- addAttribute(atts, "color", toString(color));
- }
- }
- if (atts.getLength() > 0) {
- handler.element(EL_FONT, atts);
- }
- } catch (SAXException e) {
- throw new IFException("SAX error in setFont()", e);
- }
- }
-
- /** {@inheritDoc} */
- public void handleExtensionObject(Object extension) throws IFException {
- if (extension instanceof XMLizable) {
- try {
- ((XMLizable)extension).toSAX(this.handler);
- } catch (SAXException e) {
- throw new IFException("SAX error while handling extension object", e);
- }
- } else {
- throw new UnsupportedOperationException(
- "Extension must implement XMLizable: "
- + extension + " (" + extension.getClass().getName() + ")");
- }
- }
-
- /**
- * @return a new rendering context
- * @throws IllegalStateException unless overridden
- */
- protected RenderingContext createRenderingContext() throws IllegalStateException {
- throw new IllegalStateException("Should never be called!");
- }
-
- private void addAttribute(AttributesImpl atts,
- org.apache.xmlgraphics.util.QName attribute, String value) throws SAXException {
- handler.startPrefixMapping(attribute.getPrefix(), attribute.getNamespaceURI());
- XMLUtil.addAttribute(atts, attribute, value);
- }
-
- private void addAttribute(AttributesImpl atts, String localName, String value) {
- XMLUtil.addAttribute(atts, localName, value);
- }
-
- private void addStructureReference(AttributesImpl atts) {
- IFStructureTreeElement structureTreeElement
- = (IFStructureTreeElement) getContext().getStructureTreeElement();
- if (structureTreeElement != null) {
- addStructRefAttribute(atts, structureTreeElement.getId());
- }
- }
-
- private void addStructRefAttribute(AttributesImpl atts, String id) {
- atts.addAttribute(InternalElementMapping.URI,
- InternalElementMapping.STRUCT_REF,
- InternalElementMapping.STANDARD_PREFIX + ":" + InternalElementMapping.STRUCT_REF,
- XMLConstants.CDATA,
- id);
- }
-
- private void addID() throws SAXException {
- String id = getContext().getID();
- if (!currentID.equals(id)) {
- AttributesImpl atts = new AttributesImpl();
- addAttribute(atts, "name", id);
- handler.startElement(EL_ID, atts);
- handler.endElement(EL_ID);
- currentID = id;
- }
- }
-
- private Map incompleteActions = new java.util.HashMap();
- private List completeActions = new java.util.LinkedList();
-
- private void noteAction(AbstractAction action) {
- if (action == null) {
- throw new NullPointerException("action must not be null");
- }
- if (!action.isComplete()) {
- assert action.hasID();
- incompleteActions.put(action.getID(), action);
- }
- }
-
- /** {@inheritDoc} */
- public void renderNamedDestination(NamedDestination destination) throws IFException {
- noteAction(destination.getAction());
-
- AttributesImpl atts = new AttributesImpl();
- atts.addAttribute("", "name", "name", XMLConstants.CDATA, destination.getName());
- try {
- handler.startElement(DocumentNavigationExtensionConstants.NAMED_DESTINATION, atts);
- serializeXMLizable(destination.getAction());
- handler.endElement(DocumentNavigationExtensionConstants.NAMED_DESTINATION);
- } catch (SAXException e) {
- throw new IFException("SAX error serializing named destination", e);
- }
- }
-
- /** {@inheritDoc} */
- public void renderBookmarkTree(BookmarkTree tree) throws IFException {
- AttributesImpl atts = new AttributesImpl();
- try {
- handler.startElement(DocumentNavigationExtensionConstants.BOOKMARK_TREE, atts);
- for (Object o : tree.getBookmarks()) {
- Bookmark b = (Bookmark) o;
- if (b.getAction() != null) {
- serializeBookmark(b);
- }
- }
- handler.endElement(DocumentNavigationExtensionConstants.BOOKMARK_TREE);
- } catch (SAXException e) {
- throw new IFException("SAX error serializing bookmark tree", e);
- }
- }
-
- private void serializeBookmark(Bookmark bookmark) throws SAXException, IFException {
- noteAction(bookmark.getAction());
-
- AttributesImpl atts = new AttributesImpl();
- atts.addAttribute("", "title", "title", XMLUtil.CDATA, bookmark.getTitle());
- atts.addAttribute("", "starting-state", "starting-state",
- XMLUtil.CDATA, bookmark.isShown() ? "show" : "hide");
- handler.startElement(DocumentNavigationExtensionConstants.BOOKMARK, atts);
- serializeXMLizable(bookmark.getAction());
- for (Object o : bookmark.getChildBookmarks()) {
- Bookmark b = (Bookmark) o;
- if (b.getAction() != null) {
- serializeBookmark(b);
- }
- }
- handler.endElement(DocumentNavigationExtensionConstants.BOOKMARK);
- }
-
- /** {@inheritDoc} */
- public void renderLink(Link link) throws IFException {
- noteAction(link.getAction());
-
- AttributesImpl atts = new AttributesImpl();
- atts.addAttribute("", "rect", "rect",
- XMLConstants.CDATA, IFUtil.toString(link.getTargetRect()));
- if (getUserAgent().isAccessibilityEnabled()) {
- addStructRefAttribute(atts,
- ((IFStructureTreeElement) link.getAction().getStructureTreeElement()).getId());
- }
- try {
- handler.startElement(DocumentNavigationExtensionConstants.LINK, atts);
- serializeXMLizable(link.getAction());
- handler.endElement(DocumentNavigationExtensionConstants.LINK);
- } catch (SAXException e) {
- throw new IFException("SAX error serializing link", e);
- }
- }
-
- /** {@inheritDoc} */
- public void addResolvedAction(AbstractAction action) throws IFException {
- assert action.isComplete();
- assert action.hasID();
- AbstractAction noted = (AbstractAction)incompleteActions.remove(action.getID());
- if (noted != null) {
- completeActions.add(action);
- } else {
- //ignore as it was already complete when it was first used.
- }
- }
-
- public int getPageIndex() {
- return -1;
- }
-
- private void commitNavigation() throws IFException {
- Iterator iter = this.completeActions.iterator();
- while (iter.hasNext()) {
- AbstractAction action = (AbstractAction)iter.next();
- iter.remove();
- serializeXMLizable(action);
- }
- assert this.completeActions.size() == 0;
- }
-
- private void finishDocumentNavigation() {
- assert this.incompleteActions.size() == 0 : "Still holding incomplete actions!";
- }
-
- private void serializeXMLizable(XMLizable object) throws IFException {
- try {
- object.toSAX(handler);
- } catch (SAXException e) {
- throw new IFException("SAX error serializing object", e);
- }
- }
-
- /** {@inheritDoc} */
- public boolean isBackgroundRequired(BorderProps bpsTop, BorderProps bpsBottom,
- BorderProps bpsLeft, BorderProps bpsRight) {
- return true;
- }
- }
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