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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.pdf;
-
- // Java
- import java.awt.Color;
- import java.awt.Point;
- import java.awt.Rectangle;
- import java.awt.geom.AffineTransform;
- import java.awt.geom.Point2D;
- import java.awt.geom.Rectangle2D;
- import java.io.FileNotFoundException;
- import java.io.IOException;
- import java.io.OutputStream;
- import java.util.Iterator;
- import java.util.List;
- import java.util.Locale;
- import java.util.Map;
-
- import org.w3c.dom.Document;
- import org.w3c.dom.NodeList;
-
- import org.apache.xmlgraphics.image.loader.ImageException;
- import org.apache.xmlgraphics.image.loader.ImageFlavor;
- 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.image.loader.util.ImageUtil;
-
- import org.apache.fop.ResourceEventProducer;
- import org.apache.fop.apps.FOPException;
- import org.apache.fop.apps.FOUserAgent;
- import org.apache.fop.apps.MimeConstants;
- import org.apache.fop.area.Area;
- import org.apache.fop.area.Block;
- import org.apache.fop.area.BookmarkData;
- import org.apache.fop.area.CTM;
- import org.apache.fop.area.DestinationData;
- import org.apache.fop.area.LineArea;
- import org.apache.fop.area.OffDocumentExtensionAttachment;
- import org.apache.fop.area.OffDocumentItem;
- import org.apache.fop.area.PageSequence;
- import org.apache.fop.area.PageViewport;
- import org.apache.fop.area.Trait;
- import org.apache.fop.area.inline.AbstractTextArea;
- import org.apache.fop.area.inline.Image;
- import org.apache.fop.area.inline.InlineArea;
- import org.apache.fop.area.inline.InlineParent;
- import org.apache.fop.area.inline.Leader;
- 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.datatypes.URISpecification;
- import org.apache.fop.fo.extensions.ExtensionAttachment;
- import org.apache.fop.fo.extensions.xmp.XMPMetadata;
- import org.apache.fop.fonts.Font;
- import org.apache.fop.fonts.LazyFont;
- import org.apache.fop.fonts.SingleByteFont;
- import org.apache.fop.fonts.Typeface;
- import org.apache.fop.pdf.PDFAMode;
- import org.apache.fop.pdf.PDFAction;
- import org.apache.fop.pdf.PDFAnnotList;
- import org.apache.fop.pdf.PDFDocument;
- import org.apache.fop.pdf.PDFEncryptionParams;
- import org.apache.fop.pdf.PDFFactory;
- import org.apache.fop.pdf.PDFGoTo;
- import org.apache.fop.pdf.PDFInfo;
- import org.apache.fop.pdf.PDFLink;
- import org.apache.fop.pdf.PDFNumber;
- import org.apache.fop.pdf.PDFOutline;
- import org.apache.fop.pdf.PDFPage;
- import org.apache.fop.pdf.PDFPaintingState;
- import org.apache.fop.pdf.PDFResourceContext;
- import org.apache.fop.pdf.PDFResources;
- import org.apache.fop.pdf.PDFTextUtil;
- import org.apache.fop.pdf.PDFXMode;
- import org.apache.fop.pdf.PDFXObject;
- import org.apache.fop.render.AbstractPathOrientedRenderer;
- import org.apache.fop.render.Graphics2DAdapter;
- import org.apache.fop.render.RendererContext;
- import org.apache.fop.render.pdf.PDFLogicalStructureHandler.MarkedContentInfo;
- import org.apache.fop.traits.RuleStyle;
- import org.apache.fop.util.AbstractPaintingState;
- import org.apache.fop.util.CharUtilities;
- import org.apache.fop.util.XMLUtil;
- import org.apache.fop.util.AbstractPaintingState.AbstractData;
-
- /**
- * Renderer that renders areas to PDF.
- */
- public class PDFRenderer extends AbstractPathOrientedRenderer implements PDFConfigurationConstants {
-
- /** The MIME type for PDF */
- public static final String MIME_TYPE = MimeConstants.MIME_PDF;
-
- /** Normal PDF resolution (72dpi) */
- public static final int NORMAL_PDF_RESOLUTION = 72;
-
-
- /** Controls whether comments are written to the PDF stream. */
- protected static final boolean WRITE_COMMENTS = true;
-
- /**
- * the PDF Document being created
- */
- protected PDFDocument pdfDoc;
-
- /**
- * Utility class which enables all sorts of features that are not directly connected to the
- * normal rendering process.
- */
- protected PDFRenderingUtil pdfUtil;
-
- /**
- * Map of pages using the PageViewport as the key
- * this is used for prepared pages that cannot be immediately
- * rendered
- */
- private Map pages;
-
- /**
- * Maps unique PageViewport key to PDF page reference
- */
- protected Map pageReferences = new java.util.HashMap();
-
- /**
- * Maps unique PageViewport key back to PageViewport itself
- */
- //protected Map pvReferences = new java.util.HashMap();
-
- /**
- * Maps XSL-FO element IDs to their on-page XY-positions
- * Must be used in conjunction with the page reference to fully specify the PDFGoTo details
- */
- protected Map idPositions = new java.util.HashMap();
-
- /**
- * Maps XSL-FO element IDs to PDFGoTo objects targeting the corresponding areas
- * These objects may not all be fully filled in yet
- */
- protected Map idGoTos = new java.util.HashMap();
-
- /**
- * The PDFGoTos in idGoTos that are not complete yet
- */
- protected List unfinishedGoTos = new java.util.ArrayList();
- // can't use a Set because PDFGoTo.equals returns true if the target is the same,
- // even if the object number differs
-
- /**
- * The output stream to write the document to
- */
- protected OutputStream ostream;
-
- /**
- * the /Resources object of the PDF document being created
- */
- protected PDFResources pdfResources;
-
- /** The current content generator to produce PDF commands with */
- protected PDFContentGenerator generator;
- private PDFBorderPainter borderPainter;
-
- /**
- * the current annotation list to add annotations to
- */
- protected PDFResourceContext currentContext = null;
-
- /**
- * the current page to add annotations to
- */
- protected PDFPage currentPage;
-
- /**
- * the current page's PDF reference string (to avoid numerous function calls)
- */
- protected String currentPageRef;
-
- /** page height */
- protected int pageHeight;
-
- /** Image handler registry */
- private final PDFImageHandlerRegistry imageHandlerRegistry = new PDFImageHandlerRegistry();
-
- private boolean accessEnabled;
-
- private PDFLogicalStructureHandler logicalStructureHandler;
-
- private int pageSequenceIndex;
-
- /** Reference in the structure tree to the image being rendered. */
- private String imageReference;
-
- /**
- * create the PDF renderer
- */
- public PDFRenderer() {
- }
-
- /** {@inheritDoc} */
- public void setUserAgent(FOUserAgent agent) {
- super.setUserAgent(agent);
- this.pdfUtil = new PDFRenderingUtil(getUserAgent());
- accessEnabled = agent.isAccessibilityEnabled();
- }
-
- PDFRenderingUtil getPDFUtil() {
- return this.pdfUtil;
- }
-
- PDFContentGenerator getGenerator() {
- return this.generator;
- }
-
- PDFPaintingState getState() {
- return getGenerator().getState();
- }
-
- /** {@inheritDoc} */
- public void startRenderer(OutputStream stream) throws IOException {
- if (userAgent == null) {
- throw new IllegalStateException("UserAgent must be set before starting the renderer");
- }
- ostream = stream;
- this.pdfDoc = pdfUtil.setupPDFDocument(stream);
- if (accessEnabled) {
- pdfDoc.getRoot().makeTagged();
- logicalStructureHandler = new PDFLogicalStructureHandler(pdfDoc,
- userAgent.getEventBroadcaster());
- }
- }
-
- /**
- * Checks if there are any unfinished PDFGoTos left in the list and resolves them
- * to a default position on the page. Logs a warning, as this should not happen.
- */
- protected void finishOpenGoTos() {
- int count = unfinishedGoTos.size();
- if (count > 0) {
- // TODO : page height may not be the same for all targeted pages
- Point2D.Float defaultPos = new Point2D.Float(0f, pageHeight / 1000f); // top-o-page
- while (!unfinishedGoTos.isEmpty()) {
- PDFGoTo gt = (PDFGoTo) unfinishedGoTos.get(0);
- finishIDGoTo(gt, defaultPos);
- }
- PDFEventProducer eventProducer = PDFEventProducer.Provider.get(
- getUserAgent().getEventBroadcaster());
- eventProducer.nonFullyResolvedLinkTargets(this, count);
- // dysfunctional if pageref is null
- }
- }
-
- /** {@inheritDoc} */
- public void stopRenderer() throws IOException {
- finishOpenGoTos();
-
- pdfDoc.getResources().addFonts(pdfDoc, fontInfo);
- pdfDoc.outputTrailer(ostream);
-
- this.pdfDoc = null;
- ostream = null;
-
- pages = null;
-
- pageReferences.clear();
- //pvReferences.clear();
- pdfResources = null;
- this.generator = null;
- currentContext = null;
- currentPage = null;
-
- idPositions.clear();
- idGoTos.clear();
- }
-
- /**
- * {@inheritDoc}
- */
- public boolean supportsOutOfOrder() {
- return !accessEnabled;
- }
-
- /**
- * {@inheritDoc}
- */
- public void processOffDocumentItem(OffDocumentItem odi) {
- if (odi instanceof DestinationData) {
- // render Destinations
- renderDestination((DestinationData) odi);
- } else if (odi instanceof BookmarkData) {
- // render Bookmark-Tree
- renderBookmarkTree((BookmarkData) odi);
- } else if (odi instanceof OffDocumentExtensionAttachment) {
- ExtensionAttachment attachment = ((OffDocumentExtensionAttachment)odi).getAttachment();
- if (XMPMetadata.CATEGORY.equals(attachment.getCategory())) {
- pdfUtil.renderXMPMetadata((XMPMetadata)attachment);
- }
- }
- }
-
- private void renderDestination(DestinationData dd) {
- String targetID = dd.getIDRef();
- if (targetID == null || targetID.length() == 0) {
- throw new IllegalArgumentException("DestinationData must contain a ID reference");
- }
- PageViewport pv = dd.getPageViewport();
- if (pv != null) {
- PDFGoTo gt = getPDFGoToForID(targetID, pv.getKey());
- pdfDoc.getFactory().makeDestination(
- dd.getIDRef(), gt.makeReference());
- } else {
- //Warning already issued by AreaTreeHandler (debug level is sufficient)
- log.debug("Unresolved destination item received: " + dd.getIDRef());
- }
- }
-
- /**
- * Renders a Bookmark-Tree object
- * @param bookmarks the BookmarkData object containing all the Bookmark-Items
- */
- protected void renderBookmarkTree(BookmarkData bookmarks) {
- for (int i = 0; i < bookmarks.getCount(); i++) {
- BookmarkData ext = bookmarks.getSubData(i);
- renderBookmarkItem(ext, null);
- }
- }
-
- private void renderBookmarkItem(BookmarkData bookmarkItem,
- PDFOutline parentBookmarkItem) {
- PDFOutline pdfOutline = null;
-
- String targetID = bookmarkItem.getIDRef();
- if (targetID == null || targetID.length() == 0) {
- throw new IllegalArgumentException("DestinationData must contain a ID reference");
- }
- PageViewport pv = bookmarkItem.getPageViewport();
- if (pv != null) {
- String pvKey = pv.getKey();
- PDFGoTo gt = getPDFGoToForID(targetID, pvKey);
- // create outline object:
- PDFOutline parent = parentBookmarkItem != null
- ? parentBookmarkItem
- : pdfDoc.getOutlineRoot();
- pdfOutline = pdfDoc.getFactory().makeOutline(parent,
- bookmarkItem.getBookmarkTitle(), gt, bookmarkItem.showChildItems());
- } else {
- //Warning already issued by AreaTreeHandler (debug level is sufficient)
- log.debug("Bookmark with IDRef \"" + targetID + "\" has a null PageViewport.");
- }
-
- for (int i = 0; i < bookmarkItem.getCount(); i++) {
- renderBookmarkItem(bookmarkItem.getSubData(i), pdfOutline);
- }
- }
-
- /** {@inheritDoc} */
- public Graphics2DAdapter getGraphics2DAdapter() {
- return new PDFGraphics2DAdapter(this);
- }
-
- /** {@inheritDoc} */
- protected void saveGraphicsState() {
- generator.saveGraphicsState();
- }
-
- /** {@inheritDoc} */
- protected void restoreGraphicsState() {
- generator.restoreGraphicsState();
- }
-
- /** Indicates the beginning of a text object. */
- protected void beginTextObject() {
- generator.beginTextObject();
- }
-
- /** Indicates the end of a text object. */
- protected void endTextObject() {
- generator.endTextObject();
- }
-
- /**
- * Start the next page sequence.
- * For the PDF renderer there is no concept of page sequences
- * but it uses the first available page sequence title to set
- * as the title of the PDF document, and the language of the
- * document.
- * @param pageSequence the page sequence
- */
- public void startPageSequence(PageSequence pageSequence) {
- super.startPageSequence(pageSequence);
- LineArea seqTitle = pageSequence.getTitle();
- if (seqTitle != null) {
- String str = convertTitleToString(seqTitle);
- PDFInfo info = this.pdfDoc.getInfo();
- if (info.getTitle() == null) {
- info.setTitle(str);
- }
- }
- Locale language = null;
- if (pageSequence.getLanguage() != null) {
- String lang = pageSequence.getLanguage();
- String country = pageSequence.getCountry();
- if (lang != null) {
- language = (country == null) ? new Locale(lang) : new Locale(lang, country);
- }
- if (pdfDoc.getRoot().getLanguage() == null) {
- //Only set if not set already (first non-null is used)
- //Note: No checking is performed whether the values are valid!
- pdfDoc.getRoot().setLanguage(XMLUtil.toRFC3066(language));
- }
- }
- pdfUtil.generateDefaultXMPMetadata();
- if (accessEnabled) {
- NodeList nodes = getUserAgent().getStructureTree().getPageSequence(pageSequenceIndex++);
- logicalStructureHandler.processStructureTree(nodes, language);
- }
- }
-
- /**
- * The pdf page is prepared by making the page.
- * The page is made in the pdf document without any contents
- * and then stored to add the contents later.
- * The page objects is stored using the area tree PageViewport
- * as a key.
- *
- * @param page the page to prepare
- */
- public void preparePage(PageViewport page) {
- setupPage(page);
- if (pages == null) {
- pages = new java.util.HashMap();
- }
- pages.put(page, currentPage);
- }
-
- private void setupPage(PageViewport page) {
- this.pdfResources = this.pdfDoc.getResources();
-
- Rectangle2D bounds = page.getViewArea();
- double w = bounds.getWidth();
- double h = bounds.getHeight();
- this.currentPage = this.pdfDoc.getFactory().makePage(
- this.pdfResources,
- (int) Math.round(w / 1000), (int) Math.round(h / 1000),
- page.getPageIndex());
- pageReferences.put(page.getKey(), currentPage.referencePDF());
- //pvReferences.put(page.getKey(), page);
-
- pdfUtil.generatePageLabel(page.getPageIndex(), page.getPageNumberString());
- }
-
- /**
- * This method creates a PDF stream for the current page
- * uses it as the contents of a new page. The page is written
- * immediately to the output stream.
- * {@inheritDoc}
- */
- public void renderPage(PageViewport page)
- throws IOException, FOPException {
- if (pages != null
- && (currentPage = (PDFPage) pages.get(page)) != null) {
- //Retrieve previously prepared page (out-of-line rendering)
- pages.remove(page);
- } else {
- setupPage(page);
- }
- currentPageRef = currentPage.referencePDF();
-
- if (accessEnabled) {
- logicalStructureHandler.startPage(currentPage);
- }
-
- Rectangle bounds = page.getViewArea();
- pageHeight = bounds.height;
-
- this.generator = new PDFContentGenerator(this.pdfDoc, this.ostream, this.currentPage);
- this.borderPainter = new PDFBorderPainter(this.generator);
-
- // Transform the PDF's default coordinate system (0,0 at lower left) to the PDFRenderer's
- AffineTransform basicPageTransform = new AffineTransform(1, 0, 0, -1, 0,
- pageHeight / 1000f);
- generator.concatenate(basicPageTransform);
- /*
- currentState.concatenate(basicPageTransform);
- currentStream.add(CTMHelper.toPDFString(basicPageTransform, false) + " cm\n");
- */
-
- super.renderPage(page);
-
- if (accessEnabled) {
- logicalStructureHandler.endPage();
- }
-
- this.pdfDoc.registerObject(generator.getStream());
- currentPage.setContents(generator.getStream());
- PDFAnnotList annots = currentPage.getAnnotations();
- if (annots != null) {
- this.pdfDoc.addObject(annots);
- }
- this.pdfDoc.addObject(currentPage);
- this.borderPainter = null;
- this.generator.flushPDFDoc();
- this.generator = null;
- }
-
- /** {@inheritDoc} */
- protected void startVParea(CTM ctm, Rectangle2D clippingRect) {
- saveGraphicsState();
- // Set the given CTM in the graphics state
- /*
- currentState.concatenate(
- new AffineTransform(CTMHelper.toPDFArray(ctm)));
- */
-
- if (clippingRect != null) {
- clipRect((float)clippingRect.getX() / 1000f,
- (float)clippingRect.getY() / 1000f,
- (float)clippingRect.getWidth() / 1000f,
- (float)clippingRect.getHeight() / 1000f);
- }
- // multiply with current CTM
- generator.concatenate(new AffineTransform(CTMHelper.toPDFArray(ctm)));
- }
-
- /** {@inheritDoc} */
- protected void endVParea() {
- restoreGraphicsState();
- }
-
- /** {@inheritDoc} */
- protected void concatenateTransformationMatrix(AffineTransform at) {
- generator.concatenate(at);
- }
-
- /**
- * Formats a float value (normally coordinates) as Strings.
- * @param value the value
- * @return the formatted value
- */
- protected static String format(float value) {
- return PDFNumber.doubleOut(value);
- }
-
- /** {@inheritDoc} */
- protected void drawBorderLine(float x1, float y1, float x2, float y2,
- boolean horz, boolean startOrBefore, int style, Color col) {
- PDFBorderPainter.drawBorderLine(generator, x1, y1, x2, y2, horz, startOrBefore, style, col);
- }
-
- /** {@inheritDoc} */
- protected void clipRect(float x, float y, float width, float height) {
- generator.add(format(x) + " " + format(y) + " "
- + format(width) + " " + format(height) + " re ");
- clip();
- }
-
- /**
- * Clip an area.
- */
- protected void clip() {
- generator.add("W\n" + "n\n");
- }
-
- /**
- * Moves the current point to (x, y), omitting any connecting line segment.
- * @param x x coordinate
- * @param y y coordinate
- */
- protected void moveTo(float x, float y) {
- generator.add(format(x) + " " + format(y) + " m ");
- }
-
- /**
- * Appends a straight line segment from the current point to (x, y). The
- * new current point is (x, y).
- * @param x x coordinate
- * @param y y coordinate
- */
- protected void lineTo(float x, float y) {
- generator.add(format(x) + " " + format(y) + " l ");
- }
-
- /**
- * Closes the current subpath by appending a straight line segment from
- * the current point to the starting point of the subpath.
- */
- protected void closePath() {
- generator.add("h ");
- }
-
- /**
- * {@inheritDoc}
- */
- protected void fillRect(float x, float y, float width, float height) {
- if (width > 0 && height > 0) {
- generator.add(format(x) + " " + format(y) + " "
- + format(width) + " " + format(height) + " re f\n");
- }
- }
-
- /**
- * Draw a line.
- *
- * @param startx the start x position
- * @param starty the start y position
- * @param endx the x end position
- * @param endy the y end position
- */
- private void drawLine(float startx, float starty, float endx, float endy) {
- generator.add(format(startx) + " " + format(starty) + " m ");
- generator.add(format(endx) + " " + format(endy) + " l S\n");
- }
-
- /**
- * Breaks out of the state stack to handle fixed block-containers.
- * @return the saved state stack to recreate later
- */
- protected List breakOutOfStateStack() {
- PDFPaintingState paintingState = getState();
- List breakOutList = new java.util.ArrayList();
- AbstractPaintingState.AbstractData data;
- while (true) {
- data = paintingState.getData();
- if (paintingState.restore() == null) {
- break;
- }
- if (breakOutList.size() == 0) {
- generator.comment("------ break out!");
- }
- breakOutList.add(0, data); //Insert because of stack-popping
- generator.restoreGraphicsState(false);
- }
- return breakOutList;
- }
-
- /**
- * Restores the state stack after a break out.
- * @param breakOutList the state stack to restore.
- */
- protected void restoreStateStackAfterBreakOut(List breakOutList) {
- generator.comment("------ restoring context after break-out...");
- // currentState.pushAll(breakOutList);
- AbstractData data;
- Iterator i = breakOutList.iterator();
- while (i.hasNext()) {
- data = (AbstractData)i.next();
- saveGraphicsState();
- AffineTransform at = data.getTransform();
- concatenateTransformationMatrix(at);
- //TODO Break-out: Also restore items such as line width and color
- //Left out for now because all this painting stuff is very
- //inconsistent. Some values go over PDFState, some don't.
- }
- generator.comment("------ done.");
- }
-
- /**
- * Returns area's id if it is the first area in the document with that id
- * (i.e. if the area qualifies as a link target).
- * Otherwise, or if the area has no id, null is returned.
- *
- * <i>NOTE</i>: area must be on currentPageViewport, otherwise result may be wrong!
- *
- * @param area the area for which to return the id
- * @return the area's id (null if the area has no id or
- * other preceding areas have the same id)
- */
- protected String getTargetableID(Area area) {
- String id = (String) area.getTrait(Trait.PROD_ID);
- if (id == null || id.length() == 0
- || !currentPageViewport.isFirstWithID(id)
- || idPositions.containsKey(id)) {
- return null;
- } else {
- return id;
- }
- }
-
- /**
- * Set XY position in the PDFGoTo and add it to the PDF trailer.
- *
- * @param gt the PDFGoTo object
- * @param position the X,Y position to set
- */
- protected void finishIDGoTo(PDFGoTo gt, Point2D.Float position) {
- gt.setPosition(position);
- pdfDoc.addTrailerObject(gt);
- unfinishedGoTos.remove(gt);
- }
-
- /**
- * Set page reference and XY position in the PDFGoTo and add it to the PDF trailer.
- *
- * @param gt the PDFGoTo object
- * @param pdfPageRef the PDF reference string of the target page object
- * @param position the X,Y position to set
- */
- protected void finishIDGoTo(PDFGoTo gt, String pdfPageRef, Point2D.Float position) {
- gt.setPageReference(pdfPageRef);
- finishIDGoTo(gt, position);
- }
-
- /**
- * Get a PDFGoTo pointing to the given id. Create one if necessary.
- * It is possible that the PDFGoTo is not fully resolved yet. In that case
- * it must be completed (and added to the PDF trailer) later.
- *
- * @param targetID the target id of the PDFGoTo
- * @param pvKey the unique key of the target PageViewport
- *
- * @return the PDFGoTo that was found or created
- */
- protected PDFGoTo getPDFGoToForID(String targetID, String pvKey) {
- // Already a PDFGoTo present for this target? If not, create.
- PDFGoTo gt = (PDFGoTo) idGoTos.get(targetID);
- if (gt == null) {
- String pdfPageRef = (String) pageReferences.get(pvKey);
- Point2D.Float position = (Point2D.Float) idPositions.get(targetID);
- // can the GoTo already be fully filled in?
- if (pdfPageRef != null && position != null) {
- // getPDFGoTo shares PDFGoTo objects as much as possible.
- // It also takes care of assignObjectNumber and addTrailerObject.
- gt = pdfDoc.getFactory().getPDFGoTo(pdfPageRef, position);
- } else {
- // Not complete yet, can't use getPDFGoTo:
- gt = new PDFGoTo(pdfPageRef);
- pdfDoc.assignObjectNumber(gt);
- // pdfDoc.addTrailerObject() will be called later, from finishIDGoTo()
- unfinishedGoTos.add(gt);
- }
- idGoTos.put(targetID, gt);
- }
- return gt;
- }
-
- /**
- * Saves id's absolute position on page for later retrieval by PDFGoTos
- *
- * @param id the id of the area whose position must be saved
- * @param pdfPageRef the PDF page reference string
- * @param relativeIPP the *relative* IP position in millipoints
- * @param relativeBPP the *relative* BP position in millipoints
- * @param tf the transformation to apply once the relative positions have been
- * converted to points
- */
- protected void saveAbsolutePosition(String id, String pdfPageRef,
- int relativeIPP, int relativeBPP, AffineTransform tf) {
- Point2D.Float position = new Point2D.Float(relativeIPP / 1000f, relativeBPP / 1000f);
- tf.transform(position, position);
- idPositions.put(id, position);
- // is there already a PDFGoTo waiting to be completed?
- PDFGoTo gt = (PDFGoTo) idGoTos.get(id);
- if (gt != null) {
- finishIDGoTo(gt, pdfPageRef, position);
- }
- /*
- // The code below auto-creates a named destination for every id in the document.
- // This should probably be controlled by a user-configurable setting, as it may
- // make the PDF file grow noticeably.
- // *** NOT YET WELL-TESTED ! ***
- if (true) {
- PDFFactory factory = pdfDoc.getFactory();
- if (gt == null) {
- gt = factory.getPDFGoTo(pdfPageRef, position);
- idGoTos.put(id, gt); // so others can pick it up too
- }
- factory.makeDestination(id, gt.referencePDF(), currentPageViewport);
- // Note: using currentPageViewport is only correct if the id is indeed on
- // the current PageViewport. But even if incorrect, it won't interfere with
- // what gets created in the PDF.
- // For speedup, we should also create a lookup map id -> PDFDestination
- }
- */
- }
-
- /**
- * Saves id's absolute position on page for later retrieval by PDFGoTos,
- * using the currently valid transformation and the currently valid PDF page reference
- *
- * @param id the id of the area whose position must be saved
- * @param relativeIPP the *relative* IP position in millipoints
- * @param relativeBPP the *relative* BP position in millipoints
- */
- protected void saveAbsolutePosition(String id, int relativeIPP, int relativeBPP) {
- saveAbsolutePosition(id, currentPageRef,
- relativeIPP, relativeBPP, getState().getTransform());
- }
-
- /**
- * If the given block area is a possible link target, its id + absolute position will
- * be saved. The saved position is only correct if this function is called at the very
- * start of renderBlock!
- *
- * @param block the block area in question
- */
- protected void saveBlockPosIfTargetable(Block block) {
- String id = getTargetableID(block);
- if (id != null) {
- // FIXME: Like elsewhere in the renderer code, absolute and relative
- // directions are happily mixed here. This makes sure that the
- // links point to the right location, but it is not correct.
- int ipp = block.getXOffset();
- int bpp = block.getYOffset() + block.getSpaceBefore();
- int positioning = block.getPositioning();
- if (!(positioning == Block.FIXED || positioning == Block.ABSOLUTE)) {
- ipp += currentIPPosition;
- bpp += currentBPPosition;
- }
- AffineTransform tf = positioning == Block.FIXED
- ? getState().getBaseTransform()
- : getState().getTransform();
- saveAbsolutePosition(id, currentPageRef, ipp, bpp, tf);
- }
- }
-
- /**
- * If the given inline area is a possible link target, its id + absolute position will
- * be saved. The saved position is only correct if this function is called at the very
- * start of renderInlineArea!
- *
- * @param inlineArea the inline area in question
- */
- protected void saveInlinePosIfTargetable(InlineArea inlineArea) {
- String id = getTargetableID(inlineArea);
- if (id != null) {
- int extraMarginBefore = 5000; // millipoints
- int ipp = currentIPPosition;
- int bpp = currentBPPosition + inlineArea.getOffset() - extraMarginBefore;
- saveAbsolutePosition(id, ipp, bpp);
- }
- }
-
- /**
- * {@inheritDoc}
- */
- protected void renderBlock(Block block) {
- saveBlockPosIfTargetable(block);
- super.renderBlock(block);
- }
-
- /** {@inheritDoc} */
- protected void renderLineArea(LineArea line) {
- super.renderLineArea(line);
- }
-
- /**
- * {@inheritDoc}
- */
- protected void renderInlineArea(InlineArea inlineArea) {
- saveInlinePosIfTargetable(inlineArea);
- super.renderInlineArea(inlineArea);
- }
-
- /**
- * Render inline parent area.
- * For pdf this handles the inline parent area traits such as
- * links, border, background.
- * @param ip the inline parent area
- */
- public void renderInlineParent(InlineParent ip) {
-
- boolean annotsAllowed = pdfDoc.getProfile().isAnnotationAllowed();
-
- // stuff we only need if a link must be created:
- Rectangle2D ipRect = null;
- PDFFactory factory = null;
- PDFAction action = null;
- if (annotsAllowed) {
- // make sure the rect is determined *before* calling super!
- int ipp = currentIPPosition;
- int bpp = currentBPPosition + ip.getOffset();
- ipRect = new Rectangle2D.Float(ipp / 1000f, bpp / 1000f,
- ip.getIPD() / 1000f, ip.getBPD() / 1000f);
- AffineTransform transform = getState().getTransform();
- ipRect = transform.createTransformedShape(ipRect).getBounds2D();
-
- factory = pdfDoc.getFactory();
- }
-
- // render contents
- super.renderInlineParent(ip);
-
- boolean linkTraitFound = false;
-
- // try INTERNAL_LINK first
- Trait.InternalLink intLink = (Trait.InternalLink) ip.getTrait(Trait.INTERNAL_LINK);
- if (intLink != null) {
- linkTraitFound = true;
- String pvKey = intLink.getPVKey();
- String idRef = intLink.getIDRef();
- boolean pvKeyOK = pvKey != null && pvKey.length() > 0;
- boolean idRefOK = idRef != null && idRef.length() > 0;
- if (pvKeyOK && idRefOK) {
- if (annotsAllowed) {
- action = getPDFGoToForID(idRef, pvKey);
- }
- } else {
- //Warnings already issued by AreaTreeHandler
- }
- }
-
- // no INTERNAL_LINK, look for EXTERNAL_LINK
- if (!linkTraitFound) {
- Trait.ExternalLink extLink = (Trait.ExternalLink) ip.getTrait(Trait.EXTERNAL_LINK);
- if (extLink != null) {
- String extDest = extLink.getDestination();
- if (extDest != null && extDest.length() > 0) {
- linkTraitFound = true;
- if (annotsAllowed) {
- action = factory.getExternalAction(extDest, extLink.newWindow());
- }
- }
- }
- }
-
- // warn if link trait found but not allowed, else create link
- if (linkTraitFound) {
- if (!annotsAllowed) {
- log.warn("Skipping annotation for a link due to PDF profile: "
- + pdfDoc.getProfile());
- } else if (action != null) {
- PDFLink pdfLink = factory.makeLink(ipRect, action);
- if (accessEnabled) {
- String ptr = (String) ip.getTrait(Trait.PTR);
- logicalStructureHandler.addLinkContentItem(pdfLink, ptr);
- }
- currentPage.addAnnotation(pdfLink);
- }
- }
- }
-
- /** {@inheritDoc} */
- public void renderViewport(Viewport viewport) {
- imageReference = (String) viewport.getTrait(Trait.PTR);
- super.renderViewport(viewport);
- imageReference = null;
- }
-
- private Typeface getTypeface(String fontName) {
- Typeface tf = (Typeface) fontInfo.getFonts().get(fontName);
- if (tf instanceof LazyFont) {
- tf = ((LazyFont)tf).getRealFont();
- }
- return tf;
- }
-
- /** {@inheritDoc} */
- public void renderText(TextArea text) {
- renderInlineAreaBackAndBorders(text);
- Color ct = (Color) text.getTrait(Trait.COLOR);
- updateColor(ct, true);
-
- if (accessEnabled) {
- String ptr = (String) text.getTrait(Trait.PTR);
- MarkedContentInfo mci = logicalStructureHandler.addTextContentItem(ptr);
- if (generator.getTextUtil().isInTextObject()) {
- generator.separateTextElements(mci.tag, mci.mcid);
- }
- generator.beginTextObject(mci.tag, mci.mcid);
- } else {
- beginTextObject();
- }
-
- String fontName = getInternalFontNameForArea(text);
- int size = ((Integer) text.getTrait(Trait.FONT_SIZE)).intValue();
-
- // This assumes that *all* CIDFonts use a /ToUnicode mapping
- Typeface tf = getTypeface(fontName);
-
- PDFTextUtil textutil = generator.getTextUtil();
- textutil.updateTf(fontName, size / 1000f, tf.isMultiByte());
-
-
- // word.getOffset() = only height of text itself
- // currentBlockIPPosition: 0 for beginning of line; nonzero
- // where previous line area failed to take up entire allocated space
- int rx = currentIPPosition + text.getBorderAndPaddingWidthStart();
- int bl = currentBPPosition + text.getOffset() + text.getBaselineOffset();
-
- textutil.writeTextMatrix(new AffineTransform(1, 0, 0, -1, rx / 1000f, bl / 1000f));
-
- super.renderText(text);
-
- textutil.writeTJ();
-
- renderTextDecoration(tf, size, text, bl, rx);
- }
-
- /** {@inheritDoc} */
- public void renderWord(WordArea word) {
- Font font = getFontFromArea(word.getParentArea());
- String s = word.getWord();
-
- escapeText(s, word.getLetterAdjustArray(),
- font, (AbstractTextArea)word.getParentArea());
-
- super.renderWord(word);
- }
-
- /** {@inheritDoc} */
- public void renderSpace(SpaceArea space) {
- Font font = getFontFromArea(space.getParentArea());
- String s = space.getSpace();
-
- AbstractTextArea textArea = (AbstractTextArea)space.getParentArea();
- escapeText(s, null, font, textArea);
-
- if (space.isAdjustable()) {
- int tws = -((TextArea) space.getParentArea()).getTextWordSpaceAdjust()
- - 2 * textArea.getTextLetterSpaceAdjust();
-
- if (tws != 0) {
- float adjust = tws / (font.getFontSize() / 1000f);
- generator.getTextUtil().adjustGlyphTJ(adjust);
- }
- }
-
- super.renderSpace(space);
- }
-
- /**
- * Escapes text according to PDF rules.
- * @param s Text to escape
- * @param letterAdjust an array of widths for letter adjustment (may be null)
- * @param font to font in use
- * @param parentArea the parent text area to retrieve certain traits from
- */
- protected void escapeText(String s,
- int[] letterAdjust,
- Font font, AbstractTextArea parentArea) {
- escapeText(s, 0, s.length(), letterAdjust, font, parentArea);
- }
-
- /**
- * Escapes text according to PDF rules.
- * @param s Text to escape
- * @param start the start position in the text
- * @param end the end position in the text
- * @param letterAdjust an array of widths for letter adjustment (may be null)
- * @param font to font in use
- * @param parentArea the parent text area to retrieve certain traits from
- */
- protected void escapeText(String s, int start, int end,
- int[] letterAdjust,
- Font font, AbstractTextArea parentArea) {
- String fontName = font.getFontName();
- float fontSize = font.getFontSize() / 1000f;
- Typeface tf = getTypeface(fontName);
- SingleByteFont singleByteFont = null;
- if (tf instanceof SingleByteFont) {
- singleByteFont = (SingleByteFont)tf;
- }
- PDFTextUtil textutil = generator.getTextUtil();
-
- int l = s.length();
-
- for (int i = start; i < end; i++) {
- char orgChar = s.charAt(i);
- char ch;
- float glyphAdjust = 0;
- if (font.hasChar(orgChar)) {
- ch = font.mapChar(orgChar);
- if (singleByteFont != null && singleByteFont.hasAdditionalEncodings()) {
- int encoding = ch / 256;
- if (encoding == 0) {
- textutil.updateTf(fontName, fontSize, tf.isMultiByte());
- } else {
- textutil.updateTf(fontName + "_" + Integer.toString(encoding),
- fontSize, tf.isMultiByte());
- ch = (char)(ch % 256);
- }
- }
- int tls = (i < l - 1 ? parentArea.getTextLetterSpaceAdjust() : 0);
- glyphAdjust -= tls;
- } else {
- if (CharUtilities.isFixedWidthSpace(orgChar)) {
- //Fixed width space are rendered as spaces so copy/paste works in a reader
- ch = font.mapChar(CharUtilities.SPACE);
- glyphAdjust = font.getCharWidth(ch) - font.getCharWidth(orgChar);
- } else {
- ch = font.mapChar(orgChar);
- }
- }
- if (letterAdjust != null && i < l - 1) {
- glyphAdjust -= letterAdjust[i + 1];
- }
-
- textutil.writeTJMappedChar(ch);
-
- float adjust = glyphAdjust / fontSize;
-
- if (adjust != 0) {
- textutil.adjustGlyphTJ(adjust);
- }
-
- }
- }
-
- /** {@inheritDoc} */
- protected void updateColor(Color col, boolean fill) {
- generator.updateColor(col, fill, null);
- }
-
- /** {@inheritDoc} */
- public void renderImage(Image image, Rectangle2D pos) {
- endTextObject();
- String url = image.getURL();
- putImage(url, pos, image.getForeignAttributes());
- }
-
- /** {@inheritDoc} */
- protected void drawImage(String url, Rectangle2D pos, Map foreignAttributes) {
- endTextObject();
- putImage(url, pos, foreignAttributes);
- }
-
- /**
- * Adds a PDF XObject (a bitmap or form) to the PDF that will later be referenced.
- * @param uri URL of the bitmap
- * @param pos Position of the bitmap
- * @deprecated Use {@link #putImage(String, Rectangle2D, Map)} instead.
- */
- protected void putImage(String uri, Rectangle2D pos) {
- putImage(uri, pos, null);
- }
-
- /**
- * Adds a PDF XObject (a bitmap or form) to the PDF that will later be referenced.
- * @param uri URL of the bitmap
- * @param pos Position of the bitmap
- * @param foreignAttributes foreign attributes associated with the image
- */
- protected void putImage(String uri, Rectangle2D pos, Map foreignAttributes) {
- Rectangle posInt = new Rectangle(
- (int)pos.getX(),
- (int)pos.getY(),
- (int)pos.getWidth(),
- (int)pos.getHeight());
-
- uri = URISpecification.getURL(uri);
- PDFXObject xobject = pdfDoc.getXObject(uri);
- if (xobject != null) {
- float w = (float) pos.getWidth() / 1000f;
- float h = (float) pos.getHeight() / 1000f;
- placeImage((float)pos.getX() / 1000f,
- (float)pos.getY() / 1000f, w, h, xobject);
- return;
- }
- Point origin = new Point(currentIPPosition, currentBPPosition);
- int x = origin.x + posInt.x;
- int y = origin.y + posInt.y;
-
- ImageManager manager = getUserAgent().getFactory().getImageManager();
- ImageInfo info = null;
- try {
- ImageSessionContext sessionContext = getUserAgent().getImageSessionContext();
- info = manager.getImageInfo(uri, sessionContext);
-
- Map hints = ImageUtil.getDefaultHints(sessionContext);
- ImageFlavor[] supportedFlavors = imageHandlerRegistry.getSupportedFlavors();
- org.apache.xmlgraphics.image.loader.Image img = manager.getImage(
- info, supportedFlavors, hints, sessionContext);
-
- //First check for a dynamically registered handler
- PDFImageHandler handler
- = (PDFImageHandler)imageHandlerRegistry.getHandler(img.getClass());
- if (handler != null) {
- if (log.isDebugEnabled()) {
- log.debug("Using PDFImageHandler: " + handler.getClass().getName());
- }
- try {
- RendererContext context = createRendererContext(
- x, y, posInt.width, posInt.height, foreignAttributes);
- handler.generateImage(context, img, origin, posInt);
- } catch (IOException ioe) {
- ResourceEventProducer eventProducer = ResourceEventProducer.Provider.get(
- getUserAgent().getEventBroadcaster());
- eventProducer.imageWritingError(this, ioe);
- return;
- }
- } else {
- throw new UnsupportedOperationException(
- "No PDFImageHandler available for image: "
- + info + " (" + img.getClass().getName() + ")");
- }
- } catch (ImageException ie) {
- ResourceEventProducer eventProducer = ResourceEventProducer.Provider.get(
- getUserAgent().getEventBroadcaster());
- eventProducer.imageError(this, (info != null ? info.toString() : uri), ie, null);
- } catch (FileNotFoundException fe) {
- ResourceEventProducer eventProducer = ResourceEventProducer.Provider.get(
- getUserAgent().getEventBroadcaster());
- eventProducer.imageNotFound(this, (info != null ? info.toString() : uri), fe, null);
- } catch (IOException ioe) {
- ResourceEventProducer eventProducer = ResourceEventProducer.Provider.get(
- getUserAgent().getEventBroadcaster());
- eventProducer.imageIOError(this, (info != null ? info.toString() : uri), ioe, null);
- }
-
- // output new data
- try {
- this.generator.flushPDFDoc();
- } catch (IOException ioe) {
- // ioexception will be caught later
- log.error(ioe.getMessage());
- }
- }
-
- /**
- * Places a previously registered image at a certain place on the page.
- * @param x X coordinate
- * @param y Y coordinate
- * @param w width for image
- * @param h height for image
- * @param xobj the image XObject
- */
- public void placeImage(float x, float y, float w, float h, PDFXObject xobj) {
- if (accessEnabled) {
- MarkedContentInfo mci = logicalStructureHandler.addImageContentItem(imageReference);
- generator.saveGraphicsState(mci.tag, mci.mcid);
- } else {
- saveGraphicsState();
- }
- generator.add(format(w) + " 0 0 "
- + format(-h) + " "
- + format(currentIPPosition / 1000f + x) + " "
- + format(currentBPPosition / 1000f + h + y)
- + " cm\n" + xobj.getName() + " Do\n");
- if (accessEnabled) {
- generator.restoreGraphicsStateAccess();
- } else {
- restoreGraphicsState();
- }
- }
-
- /** {@inheritDoc} */
- protected RendererContext createRendererContext(int x, int y, int width, int height,
- Map foreignAttributes) {
- RendererContext context = super.createRendererContext(
- x, y, width, height, foreignAttributes);
- context.setProperty(PDFRendererContextConstants.PDF_DOCUMENT, pdfDoc);
- context.setProperty(PDFRendererContextConstants.OUTPUT_STREAM, ostream);
- context.setProperty(PDFRendererContextConstants.PDF_PAGE, currentPage);
- context.setProperty(PDFRendererContextConstants.PDF_CONTEXT, currentContext);
- context.setProperty(PDFRendererContextConstants.PDF_STREAM, generator.getStream());
- context.setProperty(PDFRendererContextConstants.PDF_FONT_INFO, fontInfo);
- context.setProperty(PDFRendererContextConstants.PDF_FONT_NAME, "");
- context.setProperty(PDFRendererContextConstants.PDF_FONT_SIZE, new Integer(0));
- return context;
- }
-
- /** {@inheritDoc} */
- public void renderDocument(Document doc, String ns, Rectangle2D pos, Map foreignAttributes) {
- if (accessEnabled) {
- MarkedContentInfo mci = logicalStructureHandler.addImageContentItem(imageReference);
- generator.beginMarkedContentSequence(mci.tag, mci.mcid);
- }
- super.renderDocument(doc, ns, pos, foreignAttributes);
- if (accessEnabled) {
- generator.endMarkedContentSequence();
- }
- }
-
- /**
- * Render leader area.
- * This renders a leader area which is an area with a rule.
- * @param area the leader area to render
- */
- public void renderLeader(Leader area) {
- renderInlineAreaBackAndBorders(area);
-
- int style = area.getRuleStyle();
- int ruleThickness = area.getRuleThickness();
- int startx = currentIPPosition + area.getBorderAndPaddingWidthStart();
- int starty = currentBPPosition + area.getOffset() + (ruleThickness / 2);
- int endx = currentIPPosition
- + area.getBorderAndPaddingWidthStart()
- + area.getIPD();
- Color col = (Color)area.getTrait(Trait.COLOR);
-
- endTextObject();
- borderPainter.drawLine(new Point(startx, starty), new Point(endx, starty),
- ruleThickness, col, RuleStyle.valueOf(style));
- super.renderLeader(area);
- }
-
- /** {@inheritDoc} */
- public String getMimeType() {
- return MIME_TYPE;
- }
-
- /**
- * Sets the PDF/A mode for the PDF renderer.
- * @param mode the PDF/A mode
- */
- public void setAMode(PDFAMode mode) {
- this.pdfUtil.setAMode(mode);
- }
-
- /**
- * Sets the PDF/X mode for the PDF renderer.
- * @param mode the PDF/X mode
- */
- public void setXMode(PDFXMode mode) {
- this.pdfUtil.setXMode(mode);
- }
-
- /**
- * Sets the output color profile for the PDF renderer.
- * @param outputProfileURI the URI to the output color profile
- */
- public void setOutputProfileURI(String outputProfileURI) {
- this.pdfUtil.setOutputProfileURI(outputProfileURI);
- }
-
- /**
- * Sets the filter map to be used by the PDF renderer.
- * @param filterMap the filter map
- */
- public void setFilterMap(Map filterMap) {
- this.pdfUtil.setFilterMap(filterMap);
- }
-
- /**
- * Sets the encryption parameters used by the PDF renderer.
- * @param encryptionParams the encryption parameters
- */
- public void setEncryptionParams(PDFEncryptionParams encryptionParams) {
- this.pdfUtil.setEncryptionParams(encryptionParams);
- }
-
- MarkedContentInfo addCurrentImageToStructureTree() {
- return logicalStructureHandler.addImageContentItem(imageReference);
- }
- }
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