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|
/*
* Copyright 1999-2006 The Apache Software Foundation.
*
* Licensed 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.io.IOException;
import java.io.OutputStream;
import java.awt.Color;
import java.awt.geom.Rectangle2D;
import java.awt.geom.AffineTransform;
import java.util.Iterator;
import java.util.Map;
import java.util.List;
// XML
import org.w3c.dom.Document;
// Avalon
import org.apache.avalon.framework.configuration.Configuration;
import org.apache.avalon.framework.configuration.ConfigurationException;
// FOP
import org.apache.fop.apps.FOPException;
import org.apache.fop.apps.FOUserAgent;
import org.apache.fop.apps.MimeConstants;
import org.apache.fop.area.CTM;
import org.apache.fop.area.LineArea;
import org.apache.fop.area.OffDocumentExtensionAttachment;
import org.apache.fop.area.PageViewport;
import org.apache.fop.area.RegionViewport;
import org.apache.fop.area.Trait;
import org.apache.fop.area.OffDocumentItem;
import org.apache.fop.area.BookmarkData;
import org.apache.fop.area.inline.AbstractTextArea;
import org.apache.fop.area.inline.TextArea;
import org.apache.fop.area.inline.ForeignObject;
import org.apache.fop.area.inline.Image;
import org.apache.fop.area.inline.Leader;
import org.apache.fop.area.inline.InlineParent;
import org.apache.fop.area.inline.WordArea;
import org.apache.fop.area.inline.SpaceArea;
import org.apache.fop.datatypes.ColorType;
import org.apache.fop.fonts.Typeface;
import org.apache.fop.fonts.Font;
import org.apache.fop.fonts.FontSetup;
import org.apache.fop.image.FopImage;
import org.apache.fop.image.ImageFactory;
import org.apache.fop.image.XMLImage;
import org.apache.fop.pdf.PDFAMode;
import org.apache.fop.pdf.PDFAnnotList;
import org.apache.fop.pdf.PDFColor;
import org.apache.fop.pdf.PDFDocument;
import org.apache.fop.pdf.PDFEncryptionManager;
import org.apache.fop.pdf.PDFFilterList;
import org.apache.fop.pdf.PDFInfo;
import org.apache.fop.pdf.PDFLink;
import org.apache.fop.pdf.PDFMetadata;
import org.apache.fop.pdf.PDFNumber;
import org.apache.fop.pdf.PDFOutline;
import org.apache.fop.pdf.PDFPage;
import org.apache.fop.pdf.PDFResourceContext;
import org.apache.fop.pdf.PDFResources;
import org.apache.fop.pdf.PDFState;
import org.apache.fop.pdf.PDFStream;
import org.apache.fop.pdf.PDFText;
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.util.CharUtilities;
import org.apache.fop.fo.Constants;
import org.apache.fop.fo.extensions.ExtensionAttachment;
import org.apache.fop.fo.extensions.xmp.XMPMetadata;
/*
todo:
word rendering and optimistion
pdf state optimisation
line and border
background pattern
writing mode
text decoration
*/
/**
* Renderer that renders areas to PDF
*
*/
public class PDFRenderer extends AbstractPathOrientedRenderer {
/**
* The mime type for pdf
*/
public static final String MIME_TYPE = MimeConstants.MIME_PDF;
/** Rendering Options key for the PDF/A mode. */
public static final String PDF_A_MODE = "pdf-a-mode";
/** Controls whether comments are written to the PDF stream. */
protected static final boolean WRITE_COMMENTS = true;
/**
* the PDF Document being created
*/
protected PDFDocument pdfDoc;
/** the PDF/A mode (Default: disabled) */
protected PDFAMode pdfAMode = PDFAMode.DISABLED;
/**
* Map of pages using the PageViewport as the key
* this is used for prepared pages that cannot be immediately
* rendered
*/
protected Map pages = null;
/**
* Page references are stored using the PageViewport as the key
* when a reference is made the PageViewport is used
* for pdf this means we need the pdf page reference
*/
protected Map pageReferences = new java.util.HashMap();
/** Page viewport references */
protected Map pvReferences = new java.util.HashMap();
/**
* 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 stream to add PDF commands to
*/
protected PDFStream currentStream;
/**
* the current annotation list to add annotations to
*/
protected PDFResourceContext currentContext = null;
/**
* the current page to add annotations to
*/
protected PDFPage currentPage;
/** The current Transform */
protected AffineTransform currentBasicTransform;
/** drawing state */
protected PDFState currentState = null;
/** Name of currently selected font */
protected String currentFontName = "";
/** Size of currently selected font */
protected int currentFontSize = 0;
/** page height */
protected int pageHeight;
/** Registry of PDF filters */
protected Map filterMap;
/**
* true if a TJ command is left to be written
*/
//protected boolean textOpen = false;
/**
* true if a BT command has been written.
*/
protected boolean inTextMode = false;
/**
* the previous Y coordinate of the last word written.
* Used to decide if we can draw the next word on the same line.
*/
//protected int prevWordY = 0;
/**
* the previous X coordinate of the last word written.
* used to calculate how much space between two words
*/
//protected int prevWordX = 0;
/**
* The width of the previous word. Used to calculate space between
*/
//protected int prevWordWidth = 0;
/**
* reusable word area string buffer to reduce memory usage
*/
//private StringBuffer wordAreaPDF = new StringBuffer();
/**
* create the PDF renderer
*/
public PDFRenderer() {
}
/**
* Configure the PDF renderer.
* Get the configuration to be used for pdf stream filters,
* fonts etc.
* @see org.apache.avalon.framework.configuration.Configurable#configure(Configuration)
*/
public void configure(Configuration cfg) throws ConfigurationException {
//PDF filters
this.filterMap = PDFFilterList.buildFilterMapFromConfiguration(cfg);
//Font configuration
List cfgFonts = FontSetup.buildFontListFromConfiguration(cfg);
if (this.fontList == null) {
this.fontList = cfgFonts;
} else {
this.fontList.addAll(cfgFonts);
}
String s = cfg.getChild(PDF_A_MODE, true).getValue(null);
if (s != null) {
this.pdfAMode = PDFAMode.valueOf(s);
}
}
/**
* @see org.apache.fop.render.Renderer#setUserAgent(FOUserAgent)
*/
public void setUserAgent(FOUserAgent agent) {
super.setUserAgent(agent);
String s = (String)agent.getRendererOptions().get(PDF_A_MODE);
if (s != null) {
this.pdfAMode = PDFAMode.valueOf(s);
}
}
/**
* @see org.apache.fop.render.Renderer#startRenderer(OutputStream)
*/
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 = new PDFDocument(
userAgent.getProducer() != null ? userAgent.getProducer() : "");
this.pdfDoc.setPDFAMode(this.pdfAMode);
this.pdfDoc.setCreator(userAgent.getCreator());
this.pdfDoc.setCreationDate(userAgent.getCreationDate());
this.pdfDoc.getInfo().setAuthor(userAgent.getAuthor());
this.pdfDoc.getInfo().setTitle(userAgent.getTitle());
this.pdfDoc.getInfo().setKeywords(userAgent.getKeywords());
this.pdfDoc.setFilterMap(filterMap);
this.pdfDoc.outputHeader(stream);
//Setup encryption if necessary
PDFEncryptionManager.setupPDFEncryption(
userAgent.getPDFEncryptionParams(), this.pdfDoc);
}
/**
* @see org.apache.fop.render.Renderer#stopRenderer()
*/
public void stopRenderer() throws IOException {
pdfDoc.getResources().addFonts(pdfDoc, fontInfo);
pdfDoc.outputTrailer(ostream);
this.pdfDoc = null;
ostream = null;
pages = null;
pageReferences.clear();
pvReferences.clear();
pdfResources = null;
currentStream = null;
currentContext = null;
currentPage = null;
currentState = null;
currentFontName = "";
}
/**
* @see org.apache.fop.render.Renderer#supportsOutOfOrder()
*/
public boolean supportsOutOfOrder() {
//return false;
return true;
}
/**
* @see org.apache.fop.render.Renderer#processOffDocumentItem(OffDocumentItem)
*/
public void processOffDocumentItem(OffDocumentItem odi) {
// render Bookmark-Tree
if (odi instanceof BookmarkData) {
renderBookmarkTree((BookmarkData) odi);
} else if (odi instanceof OffDocumentExtensionAttachment) {
ExtensionAttachment attachment = ((OffDocumentExtensionAttachment)odi).getAttachment();
if (XMPMetadata.CATEGORY.equals(attachment.getCategory())) {
renderXMPMetadata((XMPMetadata)attachment);
}
}
}
/**
* 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;
PageViewport pv = bookmarkItem.getPageViewport();
if (pv != null) {
Rectangle2D bounds = pv.getViewArea();
double h = bounds.getHeight();
float yoffset = (float)h / 1000f;
String intDest = (String)pageReferences.get(pv.getKey());
if (parentBookmarkItem == null) {
PDFOutline outlineRoot = pdfDoc.getOutlineRoot();
pdfOutline = pdfDoc.getFactory().makeOutline(outlineRoot,
bookmarkItem.getBookmarkTitle(),
intDest, yoffset,
bookmarkItem.showChildItems());
} else {
pdfOutline = pdfDoc.getFactory().makeOutline(parentBookmarkItem,
bookmarkItem.getBookmarkTitle(),
intDest, yoffset,
bookmarkItem.showChildItems());
}
} else {
log.warn("Unresolved bookmark item received: " + bookmarkItem.getIDRef());
}
for (int i = 0; i < bookmarkItem.getCount(); i++) {
renderBookmarkItem(bookmarkItem.getSubData(i), pdfOutline);
}
}
private void renderXMPMetadata(XMPMetadata metadata) {
PDFMetadata pdfMetadata = pdfDoc.getFactory().makeMetadata(
metadata.getDocument(), metadata.isReadOnly());
pdfDoc.getRoot().setMetadata(pdfMetadata);
}
/** @see org.apache.fop.render.Renderer#getGraphics2DAdapter() */
public Graphics2DAdapter getGraphics2DAdapter() {
return new PDFGraphics2DAdapter(this);
}
/**
* writes out a comment.
* @param text text for the comment
*/
protected void comment(String text) {
if (WRITE_COMMENTS) {
currentStream.add("% " + text + "\n");
}
}
/** Saves the graphics state of the rendering engine. */
protected void saveGraphicsState() {
endTextObject();
currentStream.add("q\n");
}
/** Restores the last graphics state of the rendering engine. */
protected void restoreGraphicsState() {
endTextObject();
currentStream.add("Q\n");
}
/** Indicates the beginning of a text object. */
protected void beginTextObject() {
if (!inTextMode) {
currentStream.add("BT\n");
currentFontName = "";
inTextMode = true;
}
}
/** Indicates the end of a text object. */
protected void endTextObject() {
closeText();
if (inTextMode) {
currentStream.add("ET\n");
inTextMode = false;
}
}
/**
* 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.
*
* @param seqTitle the title of the page sequence
*/
public void startPageSequence(LineArea seqTitle) {
if (seqTitle != null) {
String str = convertTitleToString(seqTitle);
PDFInfo info = this.pdfDoc.getInfo();
if (info.getTitle() == null) {
info.setTitle(str);
}
}
if (pdfDoc.getRoot().getMetadata() == null) {
//If at this time no XMP metadata for the overall document has been set, create it
//from the PDFInfo object.
Document xmp = PDFMetadata.createXMPFromUserAgent(pdfDoc);
PDFMetadata pdfMetadata = pdfDoc.getFactory().makeMetadata(
xmp, true);
pdfDoc.getRoot().setMetadata(pdfMetadata);
}
}
/**
* 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();
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);
}
/**
* 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.
* @see org.apache.fop.render.Renderer#renderPage(PageViewport)
*/
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);
}
Rectangle2D bounds = page.getViewArea();
double h = bounds.getHeight();
pageHeight = (int) h;
currentStream = this.pdfDoc.getFactory()
.makeStream(PDFFilterList.CONTENT_FILTER, false);
currentState = new PDFState();
/* This transform shouldn't affect PDFState as it only sets the basic
* coordinate system for the rendering process.
*
currentState.setTransform(new AffineTransform(1, 0, 0, -1, 0,
(int) Math.round(pageHeight / 1000)));
*/
// Transform origin at top left to origin at bottom left
currentBasicTransform = new AffineTransform(1, 0, 0, -1, 0,
pageHeight / 1000f);
currentStream.add(CTMHelper.toPDFString(currentBasicTransform, false) + " cm\n");
currentFontName = "";
super.renderPage(page);
this.pdfDoc.registerObject(currentStream);
currentPage.setContents(currentStream);
PDFAnnotList annots = currentPage.getAnnotations();
if (annots != null) {
this.pdfDoc.addObject(annots);
}
this.pdfDoc.addObject(currentPage);
this.pdfDoc.output(ostream);
}
/**
* @see org.apache.fop.render.AbstractRenderer#startVParea(CTM, Rectangle2D)
*/
protected void startVParea(CTM ctm, Rectangle2D clippingRect) {
// Set the given CTM in the graphics state
currentState.push();
currentState.setTransform(
new AffineTransform(CTMHelper.toPDFArray(ctm)));
saveGraphicsState();
if (clippingRect != null) {
clipRect((float)clippingRect.getX() / 1000f,
(float)clippingRect.getY() / 1000f,
(float)clippingRect.getWidth() / 1000f,
(float)clippingRect.getHeight() / 1000f);
}
// multiply with current CTM
currentStream.add(CTMHelper.toPDFString(ctm) + " cm\n");
}
/**
* @see org.apache.fop.render.AbstractRenderer#endVParea()
*/
protected void endVParea() {
restoreGraphicsState();
currentState.pop();
}
/**
* Handle the traits for a region
* This is used to draw the traits for the given page region.
* (See Sect. 6.4.1.2 of XSL-FO spec.)
* @param region the RegionViewport whose region is to be drawn
*/
protected void handleRegionTraits(RegionViewport region) {
currentFontName = "";
super.handleRegionTraits(region);
}
/**
* Formats a float value (normally coordinates) as Strings.
* @param value the value
* @return the formatted value
*/
protected static final String format(float value) {
return PDFNumber.doubleOut(value);
}
/** @see org.apache.fop.render.AbstractPathOrientedRenderer */
protected void drawBorderLine(float x1, float y1, float x2, float y2,
boolean horz, boolean startOrBefore, int style, ColorType col) {
float w = x2 - x1;
float h = y2 - y1;
if ((w < 0) || (h < 0)) {
log.error("Negative extent received. Border won't be painted.");
return;
}
switch (style) {
case Constants.EN_DASHED:
setColor(toColor(col), false, null);
if (horz) {
float unit = Math.abs(2 * h);
int rep = (int)(w / unit);
if (rep % 2 == 0) {
rep++;
}
unit = w / rep;
currentStream.add("[" + format(unit) + "] 0 d ");
currentStream.add(format(h) + " w\n");
float ym = y1 + (h / 2);
currentStream.add(format(x1) + " " + format(ym) + " m "
+ format(x2) + " " + format(ym) + " l S\n");
} else {
float unit = Math.abs(2 * w);
int rep = (int)(h / unit);
if (rep % 2 == 0) {
rep++;
}
unit = h / rep;
currentStream.add("[" + format(unit) + "] 0 d ");
currentStream.add(format(w) + " w\n");
float xm = x1 + (w / 2);
currentStream.add(format(xm) + " " + format(y1) + " m "
+ format(xm) + " " + format(y2) + " l S\n");
}
break;
case Constants.EN_DOTTED:
setColor(toColor(col), false, null);
currentStream.add("1 J ");
if (horz) {
float unit = Math.abs(2 * h);
int rep = (int)(w / unit);
if (rep % 2 == 0) {
rep++;
}
unit = w / rep;
currentStream.add("[0 " + format(unit) + "] 0 d ");
currentStream.add(format(h) + " w\n");
float ym = y1 + (h / 2);
currentStream.add(format(x1) + " " + format(ym) + " m "
+ format(x2) + " " + format(ym) + " l S\n");
} else {
float unit = Math.abs(2 * w);
int rep = (int)(h / unit);
if (rep % 2 == 0) {
rep++;
}
unit = h / rep;
currentStream.add("[0 " + format(unit) + " ] 0 d ");
currentStream.add(format(w) + " w\n");
float xm = x1 + (w / 2);
currentStream.add(format(xm) + " " + format(y1) + " m "
+ format(xm) + " " + format(y2) + " l S\n");
}
break;
case Constants.EN_DOUBLE:
setColor(toColor(col), false, null);
currentStream.add("[] 0 d ");
if (horz) {
float h3 = h / 3;
currentStream.add(format(h3) + " w\n");
float ym1 = y1 + (h3 / 2);
float ym2 = ym1 + h3 + h3;
currentStream.add(format(x1) + " " + format(ym1) + " m "
+ format(x2) + " " + format(ym1) + " l S\n");
currentStream.add(format(x1) + " " + format(ym2) + " m "
+ format(x2) + " " + format(ym2) + " l S\n");
} else {
float w3 = w / 3;
currentStream.add(format(w3) + " w\n");
float xm1 = x1 + (w3 / 2);
float xm2 = xm1 + w3 + w3;
currentStream.add(format(xm1) + " " + format(y1) + " m "
+ format(xm1) + " " + format(y2) + " l S\n");
currentStream.add(format(xm2) + " " + format(y1) + " m "
+ format(xm2) + " " + format(y2) + " l S\n");
}
break;
case Constants.EN_GROOVE:
case Constants.EN_RIDGE:
{
float colFactor = (style == EN_GROOVE ? 0.4f : -0.4f);
currentStream.add("[] 0 d ");
Color c = toColor(col);
if (horz) {
Color uppercol = lightenColor(c, -colFactor);
Color lowercol = lightenColor(c, colFactor);
float h3 = h / 3;
currentStream.add(format(h3) + " w\n");
float ym1 = y1 + (h3 / 2);
setColor(uppercol, false, null);
currentStream.add(format(x1) + " " + format(ym1) + " m "
+ format(x2) + " " + format(ym1) + " l S\n");
setColor(c, false, null);
currentStream.add(format(x1) + " " + format(ym1 + h3) + " m "
+ format(x2) + " " + format(ym1 + h3) + " l S\n");
setColor(lowercol, false, null);
currentStream.add(format(x1) + " " + format(ym1 + h3 + h3) + " m "
+ format(x2) + " " + format(ym1 + h3 + h3) + " l S\n");
} else {
Color leftcol = lightenColor(c, -colFactor);
Color rightcol = lightenColor(c, colFactor);
float w3 = w / 3;
currentStream.add(format(w3) + " w\n");
float xm1 = x1 + (w3 / 2);
setColor(leftcol, false, null);
currentStream.add(format(xm1) + " " + format(y1) + " m "
+ format(xm1) + " " + format(y2) + " l S\n");
setColor(c, false, null);
currentStream.add(format(xm1 + w3) + " " + format(y1) + " m "
+ format(xm1 + w3) + " " + format(y2) + " l S\n");
setColor(rightcol, false, null);
currentStream.add(format(xm1 + w3 + w3) + " " + format(y1) + " m "
+ format(xm1 + w3 + w3) + " " + format(y2) + " l S\n");
}
break;
}
case Constants.EN_INSET:
case Constants.EN_OUTSET:
{
float colFactor = (style == EN_OUTSET ? 0.4f : -0.4f);
currentStream.add("[] 0 d ");
Color c = toColor(col);
if (horz) {
c = lightenColor(c, (startOrBefore ? 1 : -1) * colFactor);
currentStream.add(format(h) + " w\n");
float ym1 = y1 + (h / 2);
setColor(c, false, null);
currentStream.add(format(x1) + " " + format(ym1) + " m "
+ format(x2) + " " + format(ym1) + " l S\n");
} else {
c = lightenColor(c, (startOrBefore ? 1 : -1) * colFactor);
currentStream.add(format(w) + " w\n");
float xm1 = x1 + (w / 2);
setColor(c, false, null);
currentStream.add(format(xm1) + " " + format(y1) + " m "
+ format(xm1) + " " + format(y2) + " l S\n");
}
break;
}
case Constants.EN_HIDDEN:
break;
default:
setColor(toColor(col), false, null);
currentStream.add("[] 0 d ");
if (horz) {
currentStream.add(format(h) + " w\n");
float ym = y1 + (h / 2);
currentStream.add(format(x1) + " " + format(ym) + " m "
+ format(x2) + " " + format(ym) + " l S\n");
} else {
currentStream.add(format(w) + " w\n");
float xm = x1 + (w / 2);
currentStream.add(format(xm) + " " + format(y1) + " m "
+ format(xm) + " " + format(y2) + " l S\n");
}
}
}
/**
* Sets the current line width in points.
* @param width line width in points
*/
private void updateLineWidth(float width) {
if (currentState.setLineWidth(width)) {
//Only write if value has changed WRT the current line width
currentStream.add(format(width) + " w\n");
}
}
/**
* Clip a rectangular area.
* write a clipping operation given coordinates in the current
* transform.
* @param x the x coordinate
* @param y the y coordinate
* @param width the width of the area
* @param height the height of the area
*/
protected void clipRect(float x, float y, float width, float height) {
currentStream.add(format(x) + " " + format(y) + " "
+ format(width) + " " + format(height) + " re ");
clip();
}
/**
* Clip an area.
*/
protected void clip() {
currentStream.add("W\n");
currentStream.add("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) {
currentStream.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) {
currentStream.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() {
currentStream.add("h ");
}
/**
* @see org.apache.fop.render.AbstractPathOrientedRenderer#fillRect(float, float, float, float)
*/
protected void fillRect(float x, float y, float w, float h) {
if (w != 0 && h != 0) {
currentStream.add(format(x) + " " + format(y) + " "
+ format(w) + " " + format(h) + " 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) {
currentStream.add(format(startx) + " " + format(starty) + " m ");
currentStream.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() {
List breakOutList = new java.util.ArrayList();
PDFState.Data data;
while (true) {
data = currentState.getData();
if (currentState.pop() == null) {
break;
}
if (breakOutList.size() == 0) {
comment("------ break out!");
}
breakOutList.add(0, data); //Insert because of stack-popping
restoreGraphicsState();
}
return breakOutList;
}
/**
* Restores the state stack after a break out.
* @param breakOutList the state stack to restore.
*/
protected void restoreStateStackAfterBreakOut(List breakOutList) {
CTM tempctm;
comment("------ restoring context after break-out...");
PDFState.Data data;
Iterator i = breakOutList.iterator();
double[] matrix = new double[6];
while (i.hasNext()) {
data = (PDFState.Data)i.next();
currentState.push();
saveGraphicsState();
AffineTransform at = data.getTransform();
if (!at.isIdentity()) {
currentState.setTransform(at);
at.getMatrix(matrix);
tempctm = new CTM(matrix[0], matrix[1], matrix[2], matrix[3],
matrix[4] * 1000, matrix[5] * 1000);
currentStream.add(CTMHelper.toPDFString(tempctm) + " cm\n");
}
//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.
}
comment("------ done.");
}
/**
* @see org.apache.fop.render.AbstractRenderer#renderLineArea(LineArea)
*/
protected void renderLineArea(LineArea line) {
super.renderLineArea(line);
closeText();
}
/**
* 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) {
float start = currentIPPosition / 1000f;
float top = (ip.getOffset() + currentBPPosition) / 1000f;
float width = ip.getIPD() / 1000f;
float height = ip.getBPD() / 1000f;
// render contents
super.renderInlineParent(ip);
// place the link over the top
Object tr = ip.getTrait(Trait.INTERNAL_LINK);
boolean internal = false;
String dest = null;
float yoffset = 0;
if (tr == null) {
dest = (String)ip.getTrait(Trait.EXTERNAL_LINK);
} else {
String pvKey = (String)tr;
dest = (String)pageReferences.get(pvKey);
if (dest != null) {
PageViewport pv = (PageViewport)pvReferences.get(pvKey);
Rectangle2D bounds = pv.getViewArea();
double h = bounds.getHeight();
yoffset = (float)h / 1000f;
internal = true;
}
}
if (dest != null) {
// add link to pdf document
Rectangle2D rect = new Rectangle2D.Float(start, top, width, height);
// transform rect to absolute coords
AffineTransform transform = currentState.getTransform();
rect = transform.createTransformedShape(rect).getBounds2D();
rect = currentBasicTransform.createTransformedShape(rect).getBounds2D();
int type = internal ? PDFLink.INTERNAL : PDFLink.EXTERNAL;
PDFLink pdflink = pdfDoc.getFactory().makeLink(
rect, dest, type, yoffset);
currentPage.addAnnotation(pdflink);
}
}
/**
* @see org.apache.fop.render.AbstractRenderer#renderText(TextArea)
*/
public void renderText(TextArea text) {
renderInlineAreaBackAndBorders(text);
beginTextObject();
StringBuffer pdf = new StringBuffer();
String fontName = getInternalFontNameForArea(text);
int size = ((Integer) text.getTrait(Trait.FONT_SIZE)).intValue();
// This assumes that *all* CIDFonts use a /ToUnicode mapping
Typeface tf = (Typeface) fontInfo.getFonts().get(fontName);
boolean useMultiByte = tf.isMultiByte();
updateFont(fontName, size, pdf);
ColorType ct = (ColorType) text.getTrait(Trait.COLOR);
updateColor(ct, true, pdf);
// 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();
pdf.append("1 0 0 -1 " + format(rx / 1000f) + " " + format(bl / 1000f) + " Tm "
/*+ format(text.getTextLetterSpaceAdjust() / 1000f) + " Tc\n"*/
/*+ format(text.getTextWordSpaceAdjust() / 1000f) + " Tw ["*/);
pdf.append("[");
currentStream.add(pdf.toString());
super.renderText(text);
currentStream.add("] TJ\n");
renderTextDecoration(tf, size, text, bl, rx);
}
/**
* @see org.apache.fop.render.AbstractRenderer#renderWord(WordArea)
*/
public void renderWord(WordArea word) {
Font font = getFontFromArea(word.getParentArea());
Typeface tf = (Typeface) fontInfo.getFonts().get(font.getFontName());
boolean useMultiByte = tf.isMultiByte();
StringBuffer pdf = new StringBuffer();
String s = word.getWord();
escapeText(s, word.getLetterAdjustArray(),
font, (AbstractTextArea)word.getParentArea(), useMultiByte, pdf);
currentStream.add(pdf.toString());
super.renderWord(word);
}
/**
* @see org.apache.fop.render.AbstractRenderer#renderSpace(SpaceArea)
*/
public void renderSpace(SpaceArea space) {
Font font = getFontFromArea(space.getParentArea());
Typeface tf = (Typeface) fontInfo.getFonts().get(font.getFontName());
boolean useMultiByte = tf.isMultiByte();
String s = space.getSpace();
StringBuffer pdf = new StringBuffer();
AbstractTextArea textArea = (AbstractTextArea)space.getParentArea();
escapeText(s, null, font, textArea, useMultiByte, pdf);
if (space.isAdjustable()) {
int tws = -((TextArea) space.getParentArea()).getTextWordSpaceAdjust()
- 2 * textArea.getTextLetterSpaceAdjust();
if (tws != 0) {
pdf.append(format(tws / (font.getFontSize() / 1000f)));
pdf.append(" ");
}
}
currentStream.add(pdf.toString());
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 fs Font state
* @param parentArea the parent text area to retrieve certain traits from
* @param useMultiByte Indicates the use of multi byte convention
* @param pdf target buffer for the escaped text
*/
public void escapeText(String s, int[] letterAdjust,
Font fs, AbstractTextArea parentArea,
boolean useMultiByte, StringBuffer pdf) {
String startText = useMultiByte ? "<" : "(";
String endText = useMultiByte ? "> " : ") ";
/*
boolean kerningAvailable = false;
Map kerning = fs.getKerning();
if (kerning != null && !kerning.isEmpty()) {
//kerningAvailable = true;
//TODO Reenable me when the layout engine supports kerning, too
log.warn("Kerning support is disabled until it is supported by the layout engine!");
}
*/
int l = s.length();
float fontSize = fs.getFontSize() / 1000f;
boolean startPending = true;
for (int i = 0; i < l; i++) {
char orgChar = s.charAt(i);
char ch;
float glyphAdjust = 0;
if (fs.hasChar(orgChar)) {
ch = fs.mapChar(orgChar);
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 = fs.mapChar(CharUtilities.SPACE);
glyphAdjust = fs.getCharWidth(ch) - fs.getCharWidth(orgChar);
} else {
ch = fs.mapChar(orgChar);
}
}
if (letterAdjust != null && i < l - 1) {
glyphAdjust -= letterAdjust[i + 1];
}
if (startPending) {
pdf.append(startText);
startPending = false;
}
if (!useMultiByte) {
if (ch > 127) {
pdf.append("\\");
pdf.append(Integer.toOctalString((int) ch));
} else {
switch (ch) {
case '(':
case ')':
case '\\':
pdf.append("\\");
break;
default:
}
pdf.append(ch);
}
} else {
pdf.append(PDFText.toUnicodeHex(ch));
}
float adjust = glyphAdjust / fontSize;
if (adjust != 0) {
pdf.append(endText).append(format(adjust)).append(' ');
startPending = true;
}
}
if (!startPending) {
pdf.append(endText);
}
}
/**
* Checks to see if we have some text rendering commands open
* still and writes out the TJ command to the stream if we do
*/
protected void closeText() {
/*
if (textOpen) {
currentStream.add("] TJ\n");
textOpen = false;
prevWordX = 0;
prevWordY = 0;
currentFontName = "";
}*/
}
/**
* Establishes a new foreground or fill color. In contrast to updateColor
* this method does not check the PDFState for optimization possibilities.
* @param col the color to apply
* @param fill true to set the fill color, false for the foreground color
* @param pdf StringBuffer to write the PDF code to, if null, the code is
* written to the current stream.
*/
protected void setColor(Color col, boolean fill, StringBuffer pdf) {
PDFColor color = new PDFColor(col);
closeText();
if (pdf != null) {
pdf.append(color.getColorSpaceOut(fill));
} else {
currentStream.add(color.getColorSpaceOut(fill));
}
}
/**
* Establishes a new foreground or fill color.
* @param col the color to apply (null skips this operation)
* @param fill true to set the fill color, false for the foreground color
* @param pdf StringBuffer to write the PDF code to, if null, the code is
* written to the current stream.
*/
private void updateColor(ColorType col, boolean fill, StringBuffer pdf) {
if (col == null) {
return;
}
Color newCol = toColor(col);
boolean update = false;
if (fill) {
update = currentState.setBackColor(newCol);
} else {
update = currentState.setColor(newCol);
}
if (update) {
setColor(newCol, fill, pdf);
}
}
/** @see org.apache.fop.render.AbstractPathOrientedRenderer */
protected void updateColor(ColorType col, boolean fill) {
updateColor(col, fill, null);
}
private void updateFont(String name, int size, StringBuffer pdf) {
if ((!name.equals(this.currentFontName))
|| (size != this.currentFontSize)) {
closeText();
this.currentFontName = name;
this.currentFontSize = size;
pdf = pdf.append("/" + name + " " + format((float) size / 1000f)
+ " Tf\n");
}
}
/**
* @see org.apache.fop.render.AbstractRenderer#renderImage(Image, Rectangle2D)
*/
public void renderImage(Image image, Rectangle2D pos) {
endTextObject();
String url = image.getURL();
putImage(url, pos);
}
/** @see org.apache.fop.render.AbstractPathOrientedRenderer */
protected void drawImage(String url, Rectangle2D pos) {
endTextObject();
putImage(url, pos);
}
/**
* Adds a PDF XObject (a bitmap) to the PDF that will later be referenced.
* @param url URL of the bitmap
* @param pos Position of the bitmap
*/
protected void putImage(String url, Rectangle2D pos) {
PDFXObject xobject = pdfDoc.getImage(url);
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.getXNumber());
return;
}
url = ImageFactory.getURL(url);
ImageFactory fact = ImageFactory.getInstance();
FopImage fopimage = fact.getImage(url, userAgent);
if (fopimage == null) {
return;
}
if (!fopimage.load(FopImage.DIMENSIONS)) {
return;
}
String mime = fopimage.getMimeType();
if ("text/xml".equals(mime)) {
if (!fopimage.load(FopImage.ORIGINAL_DATA)) {
return;
}
Document doc = ((XMLImage) fopimage).getDocument();
String ns = ((XMLImage) fopimage).getNameSpace();
renderDocument(doc, ns, pos);
} else if ("image/svg+xml".equals(mime)) {
if (!fopimage.load(FopImage.ORIGINAL_DATA)) {
return;
}
Document doc = ((XMLImage) fopimage).getDocument();
String ns = ((XMLImage) fopimage).getNameSpace();
renderDocument(doc, ns, pos);
} else if ("image/eps".equals(mime)) {
FopPDFImage pdfimage = new FopPDFImage(fopimage, url);
int xobj = pdfDoc.addImage(currentContext, pdfimage).getXNumber();
fact.releaseImage(url, userAgent);
float w = (float)pos.getWidth() / 1000f;
float h = (float)pos.getHeight() / 1000f;
placeImage((float) pos.getX() / 1000,
(float) pos.getY() / 1000, w, h, xobj);
} else if ("image/jpeg".equals(mime) || "image/tiff".equals(mime)) {
FopPDFImage pdfimage = new FopPDFImage(fopimage, url);
int xobj = pdfDoc.addImage(currentContext, pdfimage).getXNumber();
fact.releaseImage(url, userAgent);
float w = (float)pos.getWidth() / 1000f;
float h = (float)pos.getHeight() / 1000f;
placeImage((float) pos.getX() / 1000,
(float) pos.getY() / 1000, w, h, xobj);
} else {
if (!fopimage.load(FopImage.BITMAP)) {
return;
}
FopPDFImage pdfimage = new FopPDFImage(fopimage, url);
int xobj = pdfDoc.addImage(currentContext, pdfimage).getXNumber();
fact.releaseImage(url, userAgent);
float w = (float) pos.getWidth() / 1000f;
float h = (float) pos.getHeight() / 1000f;
placeImage((float) pos.getX() / 1000f,
(float) pos.getY() / 1000f, w, h, xobj);
}
// output new data
try {
this.pdfDoc.output(ostream);
} catch (IOException ioe) {
// ioexception will be caught later
}
}
/**
* 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 object number of the referenced image
*/
protected void placeImage(float x, float y, float w, float h, int xobj) {
saveGraphicsState();
currentStream.add(format(w) + " 0 0 "
+ format(-h) + " "
+ format(currentIPPosition / 1000f + x) + " "
+ format(currentBPPosition / 1000f + h + y)
+ " cm\n" + "/Im" + xobj + " Do\n");
restoreGraphicsState();
}
/**
* @see org.apache.fop.render.AbstractRenderer#renderForeignObject(ForeignObject, Rectangle2D)
*/
public void renderForeignObject(ForeignObject fo, Rectangle2D pos) {
endTextObject();
Document doc = fo.getDocument();
String ns = fo.getNameSpace();
renderDocument(doc, ns, pos);
}
/**
* Renders an XML document (SVG for example).
* @param doc DOM document representing the XML document
* @param ns Namespace for the document
* @param pos Position on the page
*/
public void renderDocument(Document doc, String ns, Rectangle2D pos) {
RendererContext context;
context = new RendererContext(this, MIME_TYPE);
context.setUserAgent(userAgent);
context.setProperty(PDFRendererContextConstants.PDF_DOCUMENT, pdfDoc);
context.setProperty(PDFRendererContextConstants.OUTPUT_STREAM, ostream);
context.setProperty(PDFRendererContextConstants.PAGE_VIEWPORT, getCurrentPageViewport());
context.setProperty(PDFRendererContextConstants.PDF_STATE, currentState);
context.setProperty(PDFRendererContextConstants.PDF_PAGE, currentPage);
context.setProperty(PDFRendererContextConstants.PDF_CONTEXT,
currentContext == null ? currentPage : currentContext);
context.setProperty(PDFRendererContextConstants.PDF_CONTEXT, currentContext);
context.setProperty(PDFRendererContextConstants.PDF_STREAM, currentStream);
context.setProperty(PDFRendererContextConstants.XPOS,
new Integer(currentIPPosition + (int) pos.getX()));
context.setProperty(PDFRendererContextConstants.YPOS,
new Integer(currentBPPosition + (int) pos.getY()));
context.setProperty(PDFRendererContextConstants.PDF_FONT_INFO, fontInfo);
context.setProperty(PDFRendererContextConstants.PDF_FONT_NAME, currentFontName);
context.setProperty(PDFRendererContextConstants.PDF_FONT_SIZE,
new Integer(currentFontSize));
context.setProperty(PDFRendererContextConstants.WIDTH,
new Integer((int) pos.getWidth()));
context.setProperty(PDFRendererContextConstants.HEIGHT,
new Integer((int) pos.getHeight()));
renderXML(context, doc, ns);
}
/**
* 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);
currentState.push();
saveGraphicsState();
int style = area.getRuleStyle();
float startx = (currentIPPosition + area.getBorderAndPaddingWidthStart()) / 1000f;
float starty = (currentBPPosition + area.getOffset()) / 1000f;
float endx = (currentIPPosition + area.getBorderAndPaddingWidthStart()
+ area.getIPD()) / 1000f;
float ruleThickness = area.getRuleThickness() / 1000f;
ColorType col = (ColorType)area.getTrait(Trait.COLOR);
switch (style) {
case EN_SOLID:
case EN_DASHED:
case EN_DOUBLE:
drawBorderLine(startx, starty, endx, starty + ruleThickness,
true, true, style, col);
break;
case EN_DOTTED:
clipRect(startx, starty, endx - startx, ruleThickness);
//This displaces the dots to the right by half a dot's width
//TODO There's room for improvement here
currentStream.add("1 0 0 1 " + format(ruleThickness / 2) + " 0 cm\n");
drawBorderLine(startx, starty, endx, starty + ruleThickness,
true, true, style, col);
break;
case EN_GROOVE:
case EN_RIDGE:
float half = area.getRuleThickness() / 2000f;
setColor(lightenColor(toColor(col), 0.6f), true, null);
currentStream.add(format(startx) + " " + format(starty) + " m\n");
currentStream.add(format(endx) + " " + format(starty) + " l\n");
currentStream.add(format(endx) + " " + format(starty + 2 * half) + " l\n");
currentStream.add(format(startx) + " " + format(starty + 2 * half) + " l\n");
currentStream.add("h\n");
currentStream.add("f\n");
setColor(toColor(col), true, null);
if (style == EN_GROOVE) {
currentStream.add(format(startx) + " " + format(starty) + " m\n");
currentStream.add(format(endx) + " " + format(starty) + " l\n");
currentStream.add(format(endx) + " " + format(starty + half) + " l\n");
currentStream.add(format(startx + half) + " " + format(starty + half) + " l\n");
currentStream.add(format(startx) + " " + format(starty + 2 * half) + " l\n");
} else {
currentStream.add(format(endx) + " " + format(starty) + " m\n");
currentStream.add(format(endx) + " " + format(starty + 2 * half) + " l\n");
currentStream.add(format(startx) + " " + format(starty + 2 * half) + " l\n");
currentStream.add(format(startx) + " " + format(starty + half) + " l\n");
currentStream.add(format(endx - half) + " " + format(starty + half) + " l\n");
}
currentStream.add("h\n");
currentStream.add("f\n");
break;
default:
throw new UnsupportedOperationException("rule style not supported");
}
restoreGraphicsState();
currentState.pop();
beginTextObject();
super.renderLeader(area);
}
/** @see org.apache.fop.render.AbstractRenderer */
public String getMimeType() {
return MIME_TYPE;
}
}
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