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- /*
- * $Id$
- * Copyright (C) 2001 The Apache Software Foundation. All rights reserved.
- * For details on use and redistribution please refer to the
- * LICENSE file included with these sources.
- */
-
- /* image support modified from work of BoBoGi */
- /* font support based on work by Takayuki Takeuchi */
-
- package org.apache.fop.pdf;
-
- // images are the one place that FOP classes outside this package get
- // referenced and I'd rather not do it
- import org.apache.fop.image.FopImage;
-
- import org.apache.fop.layout.LinkSet;
- import org.apache.fop.datatypes.ColorSpace;
-
- import org.apache.fop.render.pdf.CIDFont;
- import org.apache.fop.render.pdf.fonts.LazyFont;
-
- import org.apache.fop.datatypes.IDReferences;
- import org.apache.fop.layout.Page;
- import org.apache.fop.layout.FontMetric;
- import org.apache.fop.layout.FontDescriptor;
- // Java
- import java.io.IOException;
- import java.io.OutputStream;
- import java.util.Vector;
- import java.util.Hashtable;
- import java.util.Enumeration;
- import java.awt.Rectangle;
-
- /**
- * class representing a PDF document.
- *
- * The document is built up by calling various methods and then finally
- * output to given filehandle using output method.
- *
- * A PDF document consists of a series of numbered objects preceded by a
- * header and followed by an xref table and trailer. The xref table
- * allows for quick access to objects by listing their character
- * positions within the document. For this reason the PDF document must
- * keep track of the character position of each object. The document
- * also keeps direct track of the /Root, /Info and /Resources objects.
- *
- * Modified by Mark Lillywhite, mark-fop@inomial.com. The changes
- * involve: ability to output pages one-at-a-time in a streaming
- * fashion (rather than storing them all for output at the end);
- * ability to write the /Pages object after writing the rest
- * of the document; ability to write to a stream and flush
- * the object list; enhanced trailer output; cleanups.
- *
- * Modified by lmckenzi@ca.ibm.com
- * Sometimes IDs are created, but not validated. This tracks
- * the difference.
- */
- public class PDFDocument {
- private static final Integer locationPlaceholder = new Integer(0);
- /**
- * the version of PDF supported
- */
- protected static final String pdfVersion = "1.3";
-
- /**
- * the current character position
- */
- protected int position = 0;
-
- /**
- * the character position of each object
- */
- protected Vector location = new Vector();
-
- /** List of objects to write in the trailer */
- private Vector trailerObjects = new Vector();
-
- /**
- * the counter for object numbering
- */
- protected int objectcount = 0;
-
- /**
- * the objects themselves
- */
- protected Vector objects = new Vector();
-
- /**
- * character position of xref table
- */
- protected int xref;
-
- /**
- * the /Root object
- */
- protected PDFRoot root;
-
- /** The root outline object */
- private PDFOutline outlineRoot = null;
-
- /** The /Pages object (mark-fop@inomial.com) */
- private PDFPages pages;
-
- /**
- * the /Info object
- */
- protected PDFInfo info;
-
- /**
- * the /Resources object
- */
- protected PDFResources resources;
-
- /**
- * the documents idReferences
- */
- protected IDReferences idReferences;
-
- /**
- * the colorspace (0=RGB, 1=CMYK)
- */
- // protected int colorspace = 0;
- protected ColorSpace colorspace = new ColorSpace(ColorSpace.DEVICE_RGB);
-
- /**
- * the counter for Pattern name numbering (e.g. 'Pattern1')
- */
- protected int patternCount = 0;
-
- /**
- * the counter for Shading name numbering
- */
- protected int shadingCount = 0;
-
- /**
- * the counter for XObject numbering
- */
- protected int xObjectCount = 0;
-
- /**
- * the XObjects
- */
- protected Vector xObjects = new Vector();
-
- /**
- * the XObjects Map.
- * Should be modified (works only for image subtype)
- */
- protected Hashtable xObjectsMap = new Hashtable();
-
- /**
- * the objects themselves
- */
- protected Vector pendingLinks = null;
-
- /**
- * creates an empty PDF document <p>
- *
- * The constructor creates a /Root and /Pages object to
- * track the document but does not write these objects until
- * the trailer is written. Note that the object ID of the
- * pages object is determined now, and the xref table is
- * updated later. This allows Pages to refer to their
- * Parent before we write it out. This took me a long
- * time to work out, and is so obvious now. Sigh.
- * mark-fop@inomial.com. Maybe I should do a PDF course.
- */
- public PDFDocument() {
-
- /* create the /Root, /Info and /Resources objects */
- this.pages = makePages();
-
- // Create the Root object
- this.root = makeRoot(pages);
-
- // Create the Resources object
- this.resources = makeResources();
-
- // Make the /Info record
- this.info = makeInfo();
- }
-
- /**
- * set the producer of the document
- *
- * @param producer string indicating application producing the PDF
- */
- public void setProducer(String producer) {
- this.info.setProducer(producer);
- }
-
- /**
- * Make a /Catalog (Root) object. This object is written in
- * the trailer.
- */
- public PDFRoot makeRoot(PDFPages pages) {
-
- /*
- * Make a /Pages object. This object is written in the trailer.
- */
- PDFRoot pdfRoot = new PDFRoot(++this.objectcount, pages);
- addTrailerObject(pdfRoot);
- return pdfRoot;
- }
-
- /**
- * Make a /Pages object. This object is written in the trailer.
- */
-
- public PDFPages makePages() {
- PDFPages pdfPages = new PDFPages(++this.objectcount);
- addTrailerObject(pdfPages);
- return pdfPages;
- }
-
- /**
- * Make a /Resources object. This object is written in the trailer.
- */
- public PDFResources makeResources() {
- PDFResources pdfResources = new PDFResources(++this.objectcount);
- addTrailerObject(pdfResources);
- return pdfResources;
- }
-
- /**
- * make an /Info object
- *
- * @param producer string indicating application producing the PDF
- * @return the created /Info object
- */
- protected PDFInfo makeInfo() {
-
- /*
- * create a PDFInfo with the next object number and add to
- * list of objects
- */
- PDFInfo pdfInfo = new PDFInfo(++this.objectcount);
- // set the default producer
- pdfInfo.setProducer(org.apache.fop.apps.Version.getVersion());
- this.objects.addElement(pdfInfo);
- return pdfInfo;
- }
-
- /**
- * Make a Type 0 sampled function
- *
- * @param theDomain Vector objects of Double objects.
- * This is the domain of the function.
- * See page 264 of the PDF 1.3 Spec.
- * @param theRange Vector objects of Double objects.
- * This is the Range of the function.
- * See page 264 of the PDF 1.3 Spec.
- * @param theSize A Vector object of Integer objects.
- * This is the number of samples in each input dimension.
- * I can't imagine there being more or less than two input dimensions,
- * so maybe this should be an array of length 2.
- *
- * See page 265 of the PDF 1.3 Spec.
- * @param theBitsPerSample An int specifying the number of bits user to represent each sample value.
- * Limited to 1,2,4,8,12,16,24 or 32.
- * See page 265 of the 1.3 PDF Spec.
- * @param theOrder The order of interpolation between samples. Default is 1 (one). Limited
- * to 1 (one) or 3, which means linear or cubic-spline interpolation.
- *
- * This attribute is optional.
- *
- * See page 265 in the PDF 1.3 spec.
- * @param theEncode Vector objects of Double objects.
- * This is the linear mapping of input values intop the domain
- * of the function's sample table. Default is hard to represent in
- * ascii, but basically [0 (Size0 1) 0 (Size1 1)...].
- * This attribute is optional.
- *
- * See page 265 in the PDF 1.3 spec.
- * @param theDecode Vector objects of Double objects.
- * This is a linear mapping of sample values into the range.
- * The default is just the range.
- *
- * This attribute is optional.
- * Read about it on page 265 of the PDF 1.3 spec.
- * @param theFunctionDataStream The sample values that specify the function are provided in a stream.
- *
- * This is optional, but is almost always used.
- *
- * Page 265 of the PDF 1.3 spec has more.
- * @param theFilter This is a vector of String objects which are the various filters that
- * have are to be applied to the stream to make sense of it. Order matters,
- * so watch out.
- *
- * This is not documented in the Function section of the PDF 1.3 spec,
- * it was deduced from samples that this is sometimes used, even if we may never
- * use it in FOP. It is added for completeness sake.
- * @param theNumber The object number of this PDF object.
- * @param theFunctionType This is the type of function (0,2,3, or 4).
- * It should be 0 as this is the constructor for sampled functions.
- */
- public PDFFunction makeFunction(int theFunctionType, Vector theDomain,
- Vector theRange, Vector theSize,
- int theBitsPerSample, int theOrder,
- Vector theEncode, Vector theDecode,
- StringBuffer theFunctionDataStream,
- Vector theFilter) { // Type 0 function
- PDFFunction function = new PDFFunction(++this.objectcount,
- theFunctionType, theDomain,
- theRange, theSize,
- theBitsPerSample, theOrder,
- theEncode, theDecode,
- theFunctionDataStream,
- theFilter);
-
- this.objects.addElement(function);
- return (function);
- }
-
- /**
- * make a type Exponential interpolation function
- * (for shading usually)
- *
- * @param theDomain Vector objects of Double objects.
- * This is the domain of the function.
- * See page 264 of the PDF 1.3 Spec.
- * @param theRange Vector of Doubles that is the Range of the function.
- * See page 264 of the PDF 1.3 Spec.
- * @param theCZero This is a vector of Double objects which defines the function result
- * when x=0.
- *
- * This attribute is optional.
- * It's described on page 268 of the PDF 1.3 spec.
- * @param theCOne This is a vector of Double objects which defines the function result
- * when x=1.
- *
- * This attribute is optional.
- * It's described on page 268 of the PDF 1.3 spec.
- * @param theInterpolationExponentN This is the inerpolation exponent.
- *
- * This attribute is required.
- * PDF Spec page 268
- * @param theFunctionType The type of the function, which should be 2.
- */
- public PDFFunction makeFunction(int theFunctionType, Vector theDomain,
- Vector theRange, Vector theCZero,
- Vector theCOne,
- double theInterpolationExponentN) { // type 2
- PDFFunction function = new PDFFunction(++this.objectcount,
- theFunctionType, theDomain,
- theRange, theCZero, theCOne,
- theInterpolationExponentN);
-
- this.objects.addElement(function);
- return (function);
- }
-
- /**
- * Make a Type 3 Stitching function
- *
- * @param theDomain Vector objects of Double objects.
- * This is the domain of the function.
- * See page 264 of the PDF 1.3 Spec.
- * @param theRange Vector objects of Double objects.
- * This is the Range of the function.
- * See page 264 of the PDF 1.3 Spec.
- * @param theFunctions A Vector of the PDFFunction objects that the stitching function stitches.
- *
- * This attributed is required.
- * It is described on page 269 of the PDF spec.
- * @param theBounds This is a vector of Doubles representing the numbers that,
- * in conjunction with Domain define the intervals to which each function from
- * the 'functions' object applies. It must be in order of increasing magnitude,
- * and each must be within Domain.
- *
- * It basically sets how much of the gradient each function handles.
- *
- * This attributed is required.
- * It's described on page 269 of the PDF 1.3 spec.
- * @param theEncode Vector objects of Double objects.
- * This is the linear mapping of input values intop the domain
- * of the function's sample table. Default is hard to represent in
- * ascii, but basically [0 (Size0 1) 0 (Size1 1)...].
- * This attribute is required.
- *
- * See page 270 in the PDF 1.3 spec.
- * @param theFunctionType This is the function type. It should be 3,
- * for a stitching function.
- */
- public PDFFunction makeFunction(int theFunctionType, Vector theDomain,
- Vector theRange, Vector theFunctions,
- Vector theBounds,
- Vector theEncode) { // Type 3
-
- PDFFunction function = new PDFFunction(++this.objectcount,
- theFunctionType, theDomain,
- theRange, theFunctions,
- theBounds, theEncode);
-
- this.objects.addElement(function);
- return (function);
- }
-
- /**
- * make a postscript calculator function
- *
- * @param theNumber
- * @param theFunctionType
- * @param theDomain
- * @param theRange
- * @param theFunctionDataStream
- */
- public PDFFunction makeFunction(int theNumber, int theFunctionType,
- Vector theDomain, Vector theRange,
- StringBuffer theFunctionDataStream) { // Type 4
- PDFFunction function = new PDFFunction(++this.objectcount,
- theFunctionType, theDomain,
- theRange,
- theFunctionDataStream);
-
- this.objects.addElement(function);
- return (function);
-
- }
-
- /**
- * make a function based shading object
- *
- * @param theShadingType The type of shading object, which should be 1 for function
- * based shading.
- * @param theColorSpace The colorspace is 'DeviceRGB' or something similar.
- * @param theBackground An array of color components appropriate to the
- * colorspace key specifying a single color value.
- * This key is used by the f operator buy ignored by the sh operator.
- * @param theBBox Vector of double's representing a rectangle
- * in the coordinate space that is current at the
- * time of shading is imaged. Temporary clipping
- * boundary.
- * @param theAntiAlias Whether or not to anti-alias.
- * @param theDomain Optional vector of Doubles specifying the domain.
- * @param theMatrix Vector of Doubles specifying the matrix.
- * If it's a pattern, then the matrix maps it to pattern space.
- * If it's a shading, then it maps it to current user space.
- * It's optional, the default is the identity matrix
- * @param theFunction The PDF Function that maps an (x,y) location to a color
- */
- public PDFShading makeShading(int theShadingType,
- ColorSpace theColorSpace,
- Vector theBackground, Vector theBBox,
- boolean theAntiAlias, Vector theDomain,
- Vector theMatrix,
- PDFFunction theFunction) { // make Shading of Type 1
- String theShadingName = new String("Sh" + (++this.shadingCount));
-
- PDFShading shading = new PDFShading(++this.objectcount,
- theShadingName, theShadingType,
- theColorSpace, theBackground,
- theBBox, theAntiAlias, theDomain,
- theMatrix, theFunction);
- this.objects.addElement(shading);
-
- // add this shading to resources
- this.resources.addShading(shading);
-
- return (shading);
- }
-
- /**
- * Make an axial or radial shading object.
- *
- * @param theShadingType 2 or 3 for axial or radial shading
- * @param theColorSpace "DeviceRGB" or similar.
- * @param theBackground theBackground An array of color components appropriate to the
- * colorspace key specifying a single color value.
- * This key is used by the f operator buy ignored by the sh operator.
- * @param theBBox Vector of double's representing a rectangle
- * in the coordinate space that is current at the
- * time of shading is imaged. Temporary clipping
- * boundary.
- * @param theAntiAlias Default is false
- * @param theCoords Vector of four (type 2) or 6 (type 3) Double
- * @param theDomain Vector of Doubles specifying the domain
- * @param theFunction the Stitching (PDFfunction type 3) function, even if it's stitching a single function
- * @param theExtend Vector of Booleans of whether to extend teh start and end colors past the start and end points
- * The default is [false, false]
- */
- public PDFShading makeShading(int theShadingType,
- ColorSpace theColorSpace,
- Vector theBackground, Vector theBBox,
- boolean theAntiAlias, Vector theCoords,
- Vector theDomain, PDFFunction theFunction,
- Vector theExtend) { // make Shading of Type 2 or 3
- String theShadingName = new String("Sh" + (++this.shadingCount));
-
- PDFShading shading = new PDFShading(++this.objectcount,
- theShadingName, theShadingType,
- theColorSpace, theBackground,
- theBBox, theAntiAlias, theCoords,
- theDomain, theFunction,
- theExtend);
-
- this.resources.addShading(shading);
-
- this.objects.addElement(shading);
- return (shading);
- }
-
- /**
- * Make a free-form gouraud shaded triangle mesh, coons patch mesh, or tensor patch mesh
- * shading object
- *
- * @param theShadingType 4, 6, or 7 depending on whether it's
- * Free-form gouraud-shaded triangle meshes, coons patch meshes,
- * or tensor product patch meshes, respectively.
- * @param theColorSpace "DeviceRGB" or similar.
- * @param theBackground theBackground An array of color components appropriate to the
- * colorspace key specifying a single color value.
- * This key is used by the f operator buy ignored by the sh operator.
- * @param theBBox Vector of double's representing a rectangle
- * in the coordinate space that is current at the
- * time of shading is imaged. Temporary clipping
- * boundary.
- * @param theAntiAlias Default is false
- * @param theBitsPerCoordinate 1,2,4,8,12,16,24 or 32.
- * @param theBitsPerComponent 1,2,4,8,12, and 16
- * @param theBitsPerFlag 2,4,8.
- * @param theDecode Vector of Doubles see PDF 1.3 spec pages 303 to 312.
- * @param theFunction the PDFFunction
- */
- public PDFShading makeShading(int theShadingType,
- ColorSpace theColorSpace,
- Vector theBackground, Vector theBBox,
- boolean theAntiAlias,
- int theBitsPerCoordinate,
- int theBitsPerComponent,
- int theBitsPerFlag, Vector theDecode,
- PDFFunction theFunction) { // make Shading of type 4,6 or 7
- String theShadingName = new String("Sh" + (++this.shadingCount));
-
- PDFShading shading = new PDFShading(++this.objectcount,
- theShadingName, theShadingType,
- theColorSpace, theBackground,
- theBBox, theAntiAlias,
- theBitsPerCoordinate,
- theBitsPerComponent,
- theBitsPerFlag, theDecode,
- theFunction);
-
- this.resources.addShading(shading);
-
- this.objects.addElement(shading);
- return (shading);
- }
-
- /**
- * make a Lattice-Form Gouraud mesh shading object
- *
- * @param theShadingType 5 for lattice-Form Gouraud shaded-triangle mesh
- * without spaces. "Shading1" or "Sh1" are good examples.
- * @param theColorSpace "DeviceRGB" or similar.
- * @param theBackground theBackground An array of color components appropriate to the
- * colorspace key specifying a single color value.
- * This key is used by the f operator buy ignored by the sh operator.
- * @param theBBox Vector of double's representing a rectangle
- * in the coordinate space that is current at the
- * time of shading is imaged. Temporary clipping
- * boundary.
- * @param theAntiAlias Default is false
- * @param theBitsPerCoordinate 1,2,4,8,12,16, 24, or 32
- * @param theBitsPerComponent 1,2,4,8,12,24,32
- * @param theDecode Vector of Doubles. See page 305 in PDF 1.3 spec.
- * @param theVerticesPerRow number of vertices in each "row" of the lattice.
- * @param theFunction The PDFFunction that's mapped on to this shape
- */
- public PDFShading makeShading(int theShadingType,
- ColorSpace theColorSpace,
- Vector theBackground, Vector theBBox,
- boolean theAntiAlias,
- int theBitsPerCoordinate,
- int theBitsPerComponent, Vector theDecode,
- int theVerticesPerRow,
- PDFFunction theFunction) { // make shading of Type 5
- String theShadingName = new String("Sh" + (++this.shadingCount));
-
- PDFShading shading = new PDFShading(++this.objectcount,
- theShadingName, theShadingType,
- theColorSpace, theBackground,
- theBBox, theAntiAlias,
- theBitsPerCoordinate,
- theBitsPerComponent, theDecode,
- theVerticesPerRow, theFunction);
-
- this.resources.addShading(shading);
-
- this.objects.addElement(shading);
-
- return (shading);
- }
-
- /**
- * Make a tiling pattern
- *
- * @param thePatternType the type of pattern, which is 1 for tiling.
- * @param theResources the resources associated with this pattern
- * @param thePaintType 1 or 2, colored or uncolored.
- * @param theTilingType 1, 2, or 3, constant spacing, no distortion, or faster tiling
- * @param theBBox Vector of Doubles: The pattern cell bounding box
- * @param theXStep horizontal spacing
- * @param theYStep vertical spacing
- * @param theMatrix Optional Vector of Doubles transformation matrix
- * @param theXUID Optional vector of Integers that uniquely identify the pattern
- * @param thePatternDataStream The stream of pattern data to be tiled.
- */
- public PDFPattern makePattern(int thePatternType, // 1
- PDFResources theResources, int thePaintType, int theTilingType,
- Vector theBBox, double theXStep, double theYStep, Vector theMatrix,
- Vector theXUID, StringBuffer thePatternDataStream) {
- String thePatternName = new String("Pa" + (++this.patternCount));
- // int theNumber, String thePatternName,
- // PDFResources theResources
- PDFPattern pattern = new PDFPattern(++this.objectcount,
- thePatternName, theResources, 1,
- thePaintType, theTilingType,
- theBBox, theXStep, theYStep,
- theMatrix, theXUID,
- thePatternDataStream);
-
- this.resources.addPattern(pattern);
- this.objects.addElement(pattern);
-
- return (pattern);
- }
-
- /**
- * Make a smooth shading pattern
- *
- * @param thePatternType the type of the pattern, which is 2, smooth shading
- * @param theShading the PDF Shading object that comprises this pattern
- * @param theXUID optional:the extended unique Identifier if used.
- * @param theExtGState optional: the extended graphics state, if used.
- * @param theMatrix Optional:Vector of Doubles that specify the matrix.
- */
- public PDFPattern makePattern(int thePatternType, PDFShading theShading,
- Vector theXUID, StringBuffer theExtGState,
- Vector theMatrix) {
- String thePatternName = new String("Pa" + (++this.patternCount));
-
- PDFPattern pattern = new PDFPattern(++this.objectcount,
- thePatternName, 2, theShading,
- theXUID, theExtGState, theMatrix);
-
- this.resources.addPattern(pattern);
- this.objects.addElement(pattern);
-
- return (pattern);
- }
-
- public int getColorSpace() {
- return (this.colorspace.getColorSpace());
- }
-
- public void setColorSpace(int theColorspace) {
- this.colorspace.setColorSpace(theColorspace);
- return;
- }
-
- public PDFPattern createGradient(boolean radial,
- ColorSpace theColorspace,
- Vector theColors, Vector theBounds,
- Vector theCoords) {
- PDFShading myShad;
- PDFFunction myfunky;
- PDFFunction myfunc;
- Vector theCzero;
- Vector theCone;
- PDFPattern myPattern;
- ColorSpace theColorSpace;
- double interpolation = (double)1.000;
- Vector theFunctions = new Vector();
-
- int currentPosition;
- int lastPosition = theColors.size() - 1;
-
-
- // if 5 elements, the penultimate element is 3.
- // do not go beyond that, because you always need
- // to have a next color when creating the function.
-
- for (currentPosition = 0; currentPosition < lastPosition;
- currentPosition++) { // for every consecutive color pair
- PDFColor currentColor =
- (PDFColor)theColors.elementAt(currentPosition);
- PDFColor nextColor = (PDFColor)theColors.elementAt(currentPosition
- + 1);
- // colorspace must be consistant
- if (this.colorspace.getColorSpace()
- != currentColor.getColorSpace())
- currentColor.setColorSpace(this.colorspace.getColorSpace());
-
- if (this.colorspace.getColorSpace() != nextColor.getColorSpace())
- nextColor.setColorSpace(this.colorspace.getColorSpace());
-
- theCzero = currentColor.getVector();
- theCone = nextColor.getVector();
-
- myfunc = this.makeFunction(2, null, null, theCzero, theCone,
- interpolation);
-
- theFunctions.addElement(myfunc);
-
- } // end of for every consecutive color pair
-
- myfunky = this.makeFunction(3, null, null, theFunctions, theBounds,
- null);
-
- if (radial) {
- if (theCoords.size() == 6) {
- myShad = this.makeShading(3, this.colorspace, null, null,
- false, theCoords, null, myfunky,
- null);
- } else { // if the center x, center y, and radius specifiy
- // the gradient, then assume the same center x, center y,
- // and radius of zero for the other necessary component
- Vector newCoords = new Vector();
- newCoords.addElement(theCoords.elementAt(0));
- newCoords.addElement(theCoords.elementAt(1));
- newCoords.addElement(theCoords.elementAt(2));
- newCoords.addElement(theCoords.elementAt(0));
- newCoords.addElement(theCoords.elementAt(1));
- newCoords.addElement(new Double(0.0));
-
- myShad = this.makeShading(3, this.colorspace, null, null,
- false, newCoords, null, myfunky,
- null);
-
- }
- } else {
- myShad = this.makeShading(2, this.colorspace, null, null, false,
- theCoords, null, myfunky, null);
-
- }
-
- myPattern = this.makePattern(2, myShad, null, null, null);
-
- return (myPattern);
- }
-
-
- /**
- * make a /Encoding object
- *
- * @param encodingName character encoding scheme name
- * @return the created /Encoding object
- */
- public PDFEncoding makeEncoding(String encodingName) {
-
- /*
- * create a PDFEncoding with the next object number and add to the
- * list of objects
- */
- PDFEncoding encoding = new PDFEncoding(++this.objectcount,
- encodingName);
- this.objects.addElement(encoding);
- return encoding;
- }
-
-
- /**
- * make a Type1 /Font object
- *
- * @param fontname internal name to use for this font (eg "F1")
- * @param basefont name of the base font (eg "Helvetica")
- * @param encoding character encoding scheme used by the font
- * @param metrics additional information about the font
- * @param descriptor additional information about the font
- * @return the created /Font object
- */
- public PDFFont makeFont(String fontname, String basefont,
- String encoding, FontMetric metrics,
- FontDescriptor descriptor) {
-
- /*
- * create a PDFFont with the next object number and add to the
- * list of objects
- */
- if (descriptor == null) {
- PDFFont font = new PDFFont(++this.objectcount, fontname,
- PDFFont.TYPE1, basefont, encoding);
- this.objects.addElement(font);
- return font;
- } else {
- byte subtype = PDFFont.TYPE1;
- if (metrics instanceof org.apache.fop.render.pdf.Font)
- subtype =
- ((org.apache.fop.render.pdf.Font)metrics).getSubType();
-
- PDFFontDescriptor pdfdesc = makeFontDescriptor(descriptor,
- subtype);
-
- PDFFontNonBase14 font = null;
- if (subtype == PDFFont.TYPE0) {
- /*
- * Temporary commented out - customized CMaps
- * isn't needed until /ToUnicode support is added
- * PDFCMap cmap = new PDFCMap(++this.objectcount,
- * "fop-ucs-H",
- * new PDFCIDSystemInfo("Adobe",
- * "Identity",
- * 0));
- * cmap.addContents();
- * this.objects.addElement(cmap);
- */
- font =
- (PDFFontNonBase14)PDFFont.createFont(++this.objectcount,
- fontname, subtype,
- basefont,
- "Identity-H");
- } else {
-
- font =
- (PDFFontNonBase14)PDFFont.createFont(++this.objectcount,
- fontname, subtype,
- basefont, encoding);
- }
- this.objects.addElement(font);
-
- font.setDescriptor(pdfdesc);
-
- if (subtype == PDFFont.TYPE0) {
- CIDFont cidMetrics;
- if(metrics instanceof LazyFont){
- cidMetrics = (CIDFont) ((LazyFont) metrics).getRealFont();
- }else{
- cidMetrics = (CIDFont)metrics;
- }
- PDFCIDSystemInfo sysInfo =
- new PDFCIDSystemInfo(cidMetrics.getRegistry(),
- cidMetrics.getOrdering(),
- cidMetrics.getSupplement());
- PDFCIDFont cidFont =
- new PDFCIDFont(++this.objectcount, basefont,
- cidMetrics.getCidType(),
- cidMetrics.getDefaultWidth(),
- cidMetrics.getWidths(), sysInfo,
- (PDFCIDFontDescriptor)pdfdesc);
- this.objects.addElement(cidFont);
-
- // ((PDFFontType0)font).setCMAP(cmap);
-
- ((PDFFontType0)font).setDescendantFonts(cidFont);
- } else {
- font.setWidthMetrics(metrics.getFirstChar(),
- metrics.getLastChar(),
- makeArray(metrics.getWidths(1)));
- }
-
- return font;
- }
- }
-
-
- /**
- * make a /FontDescriptor object
- */
- public PDFFontDescriptor makeFontDescriptor(FontDescriptor desc,
- byte subtype) {
- PDFFontDescriptor font = null;
-
- if (subtype == PDFFont.TYPE0) {
- // CID Font
- font = new PDFCIDFontDescriptor(++this.objectcount,
- desc.fontName(),
- desc.getFontBBox(),
- // desc.getAscender(),
- // desc.getDescender(),
- desc.getCapHeight(), desc.getFlags(),
- // new PDFRectangle(desc.getFontBBox()),
- desc.getItalicAngle(), desc.getStemV(), null); // desc.getLang(),
- // null);//desc.getPanose());
- }
- else {
- // Create normal FontDescriptor
- font = new PDFFontDescriptor(++this.objectcount, desc.fontName(),
- desc.getAscender(),
- desc.getDescender(),
- desc.getCapHeight(),
- desc.getFlags(),
- new PDFRectangle(desc.getFontBBox()),
- desc.getStemV(),
- desc.getItalicAngle());
- }
- this.objects.addElement(font);
-
- // Check if the font is embeddable
- if (desc.isEmbeddable()) {
- PDFStream stream = desc.getFontFile(this.objectcount + 1);
- if (stream != null) {
- this.objectcount++;
- font.setFontFile(desc.getSubType(), stream);
- this.objects.addElement(stream);
- }
- }
- return font;
- }
-
-
- /**
- * make an Array object (ex. Widths array for a font)
- */
- public PDFArray makeArray(int[] values) {
-
- PDFArray array = new PDFArray(++this.objectcount, values);
- this.objects.addElement(array);
- return array;
- }
-
-
- public int addImage(FopImage img) {
- // check if already created
- String url = img.getURL();
- PDFXObject xObject = (PDFXObject)this.xObjectsMap.get(url);
- if (xObject != null)
- return xObject.getXNumber();
- // else, create a new one
- xObject = new PDFXObject(++this.objectcount, ++this.xObjectCount,
- img);
- this.objects.addElement(xObject);
- this.xObjects.addElement(xObject);
- this.xObjectsMap.put(url, xObject);
- return xObjectCount;
- }
-
- /**
- * make a /Page object
- *
- * @param resources resources object to use
- * @param contents stream object with content
- * @param pagewidth width of the page in points
- * @param pageheight height of the page in points
- *
- * @return the created /Page object
- */
- public PDFPage makePage(PDFResources resources, PDFStream contents,
- int pagewidth, int pageheight) {
-
- /*
- * create a PDFPage with the next object number, the given
- * resources, contents and dimensions
- */
- PDFPage page = new PDFPage(++this.objectcount, resources, contents,
- pagewidth, pageheight);
-
- if(pendingLinks != null) {
- for(Enumeration e = pendingLinks.elements(); e.hasMoreElements(); ) {
- PendingLink pl = (PendingLink)e.nextElement();
- PDFGoTo gt = new PDFGoTo(++this.objectcount,
- page.referencePDF());
- gt.setDestination(pl.dest);
- addTrailerObject(gt);
- PDFInternalLink internalLink =
- new PDFInternalLink(gt.referencePDF());
- pl.link.setAction(internalLink);
- }
- pendingLinks = null;
- }
- /*
- if (currentPage != null) {
- Enumeration enum = currentPage.getIDList().elements();
- while (enum.hasMoreElements()) {
- String id = enum.nextElement().toString();
- idReferences.setInternalGoToPageReference(id,
- page.referencePDF());
- }
- }
- */
- /* add it to the list of objects */
- this.objects.addElement(page);
-
- /* add the page to the Root */
- this.root.addPage(page);
-
- return page;
- }
-
- /**
- * make a link object
- *
- * @param rect the clickable rectangle
- * @param destination the destination file
- * @param linkType the link type
- * @return the PDFLink object created
- */
- public PDFLink makeLink(Rectangle rect, String destination,
- int linkType) {
-
- PDFLink linkObject;
- PDFAction action;
-
- PDFLink link = new PDFLink(++this.objectcount, rect);
- this.objects.addElement(link);
-
- if (linkType == LinkSet.EXTERNAL) {
- // check destination
- if (destination.endsWith(".pdf")) { // FileSpec
- PDFFileSpec fileSpec = new PDFFileSpec(++this.objectcount,
- destination);
- this.objects.addElement(fileSpec);
- action = new PDFGoToRemote(++this.objectcount, fileSpec);
- this.objects.addElement(action);
- link.setAction(action);
- } else { // URI
- PDFUri uri = new PDFUri(destination);
- link.setAction(uri);
- }
- } else { // linkType is internal
- String goToReference = getGoToReference(destination);
- PDFInternalLink internalLink = new PDFInternalLink(goToReference);
- link.setAction(internalLink);
- }
- return link;
- }
-
- private String getGoToReference(String destination) {
- String goToReference;
- if (idReferences.doesIDExist(destination)) {
- if (idReferences.doesGoToReferenceExist(destination)) {
- goToReference =
- idReferences.getInternalLinkGoToReference(destination);
- } else { // assign Internal Link GoTo object
- goToReference =
- idReferences.createInternalLinkGoTo(destination,
- ++this.objectcount);
- addTrailerObject(idReferences.getPDFGoTo(destination));
- }
- } else { // id was not found, so create it
-
- //next line by lmckenzi@ca.ibm.com
- //solves when IDNode made before IDReferences.createID called
- //idReferences.createNewId(destination);
-
- idReferences.createUnvalidatedID(destination);
- idReferences.addToIdValidationList(destination);
- goToReference = idReferences.createInternalLinkGoTo(destination,
- ++this.objectcount);
- addTrailerObject(idReferences.getPDFGoTo(destination));
- }
- return goToReference;
- }
-
- public void addTrailerObject(PDFObject object) {
- this.trailerObjects.addElement(object);
- }
-
- class PendingLink {
- PDFLink link;
- String dest;
- }
-
- public PDFLink makeLinkCurrentPage(Rectangle rect, String dest) {
- PDFLink link = new PDFLink(++this.objectcount, rect);
- this.objects.addElement(link);
- PendingLink pl = new PendingLink();
- pl.link = link;
- pl.dest = dest;
- if(pendingLinks == null) {
- pendingLinks = new Vector();
- }
- pendingLinks.addElement(pl);
-
- return link;
- }
-
- public PDFLink makeLink(Rectangle rect, String page, String dest) {
- PDFLink link = new PDFLink(++this.objectcount, rect);
- this.objects.addElement(link);
-
- PDFGoTo gt = new PDFGoTo(++this.objectcount, page);
- gt.setDestination(dest);
- addTrailerObject(gt);
- PDFInternalLink internalLink = new PDFInternalLink(gt.referencePDF());
- link.setAction(internalLink);
-
- return link;
- }
-
- /**
- Ensure there is room in the locations xref for the number of
- objects that have been created.
- */
- private void prepareLocations() {
- while(location.size() < objectcount)
- location.addElement(locationPlaceholder);
- }
-
- /**
- * make a stream object
- *
- * @return the stream object created
- */
- public PDFStream makeStream() {
-
- /*
- * create a PDFStream with the next object number and add it
- *
- * to the list of objects
- */
- PDFStream obj = new PDFStream(++this.objectcount);
- obj.addDefaultFilters();
-
- this.objects.addElement(obj);
- return obj;
- }
-
-
- /**
- * make an annotation list object
- *
- * @return the annotation list object created
- */
- public PDFAnnotList makeAnnotList() {
-
- /*
- * create a PDFAnnotList with the next object number and add it
- * to the list of objects
- */
- PDFAnnotList obj = new PDFAnnotList(++this.objectcount);
- this.objects.addElement(obj);
- return obj;
- }
-
- /**
- * Get the root Outlines object. This method does not write
- * the outline to the PDF document, it simply creates a
- * reference for later.
- */
- public PDFOutline getOutlineRoot() {
- if(outlineRoot != null)
- return outlineRoot;
-
- outlineRoot = new PDFOutline(++this.objectcount, null, null);
- addTrailerObject(outlineRoot);
- root.setRootOutline(outlineRoot);
- return outlineRoot;
- }
-
- /**
- * Make an outline object and add it to the given outline
- * @param parent parent PDFOutline object
- * @param label the title for the new outline object
- * @param action the PDFAction to reference
- */
- public PDFOutline makeOutline(PDFOutline parent, String label,
- String destination) {
- String goToRef = getGoToReference(destination);
-
- PDFOutline obj = new PDFOutline(++this.objectcount, label, goToRef);
- //log.debug("created new outline object");
-
- if (parent != null) {
- parent.addOutline(obj);
- }
- this.objects.addElement(obj);
- return obj;
-
- }
-
- /**
- * get the /Resources object for the document
- *
- * @return the /Resources object
- */
- public PDFResources getResources() {
- return this.resources;
- }
-
- /**
- * write the entire document out
- *
- * @param writer the OutputStream to output the document to
- */
- public void output(OutputStream stream) throws IOException {
-
- prepareLocations();
-
- Enumeration en = this.objects.elements();
- while (en.hasMoreElements()) {
- /* retrieve the object with the current number */
- PDFObject object = (PDFObject)en.nextElement();
-
- /*
- * add the position of this object to the list of object
- * locations
- */
- location.setElementAt(
- new Integer(this.position),object.getNumber() - 1);
-
- /*
- * output the object and increment the character position
- * by the object's length
- */
- this.position += object.output(stream);
- }
-
- this.objects.clear();
- }
-
- /**
- * write the PDF header <P>
- *
- * This method must be called prior to formatting
- * and outputting AreaTrees.
- *
- * @param stream the OutputStream to write the header to
- * @return the number of bytes written
- */
- public void outputHeader(OutputStream stream)
- throws IOException {
- this.position=0;
-
- byte[] pdf = ("%PDF-" + this.pdfVersion + "\n").getBytes();
- stream.write(pdf);
- this.position += pdf.length;
-
- // output a binary comment as recommended by the PDF spec (3.4.1)
- byte[] bin = {
- (byte)'%', (byte)0xAA, (byte)0xAB, (byte)0xAC, (byte)0xAD,
- (byte)'\n'
- };
- stream.write(bin);
- this.position += bin.length;
-
- this.resources.setXObjects(xObjects);
- }
-
- /**
- * write the trailer
- *
- * @param stream the OutputStream to write the trailer to
- */
- public void outputTrailer(OutputStream stream)
- throws IOException {
- output(stream);
- Enumeration e = trailerObjects.elements();
- while(e.hasMoreElements()) {
- PDFObject o = (PDFObject) e.nextElement();
- this.location.setElementAt(
- new Integer(this.position), o.getNumber() - 1);
- this.position += o.output(stream);
- }
- /* output the xref table and increment the character position
- by the table's length */
- this.position += outputXref(stream);
-
- /* construct the trailer */
- String pdf =
- "trailer\n" +
- "<<\n" +
- "/Size " + (this.objectcount + 1) + "\n" +
- "/Root " + this.root.number + " " + this.root.generation + " R\n" +
- "/Info " + this.info.number + " " + this.info.generation + " R\n" +
- ">>\n" +
- "startxref\n" +
- this.xref + "\n" +
- "%%EOF\n";
-
- /* write the trailer */
- stream.write(pdf.getBytes());
- }
-
- /**
- * write the xref table
- *
- * @param stream the OutputStream to write the xref table to
- * @return the number of characters written
- */
- private int outputXref(OutputStream stream) throws IOException {
-
- /* remember position of xref table */
- this.xref = this.position;
-
- /* construct initial part of xref */
- StringBuffer pdf = new StringBuffer("xref\n0 "
- + (this.objectcount + 1)
- + "\n0000000000 65535 f \n");
-
- Enumeration en = this.location.elements();
- while (en.hasMoreElements()) {
- String x = en.nextElement().toString();
-
- /* contruct xref entry for object */
- String padding = "0000000000";
- String loc = padding.substring(x.length()) + x;
-
- /* append to xref table */
- pdf = pdf.append(loc + " 00000 n \n");
- }
-
- /* write the xref table and return the character length */
- byte[] pdfBytes = pdf.toString().getBytes();
- stream.write(pdfBytes);
- return pdfBytes.length;
- }
-
- public void setIDReferences(IDReferences idReferences) {
- this.idReferences = idReferences;
- }
-
- }
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