diff options
Diffstat (limited to 'src/org/apache/fop/pdf/PDFDocument.java')
| -rw-r--r-- | src/org/apache/fop/pdf/PDFDocument.java | 305 |
1 files changed, 0 insertions, 305 deletions
diff --git a/src/org/apache/fop/pdf/PDFDocument.java b/src/org/apache/fop/pdf/PDFDocument.java index 7cbf8bd3f..042f8b1a8 100644 --- a/src/org/apache/fop/pdf/PDFDocument.java +++ b/src/org/apache/fop/pdf/PDFDocument.java @@ -50,611 +50,306 @@ */ /* image support modified from work of BoBoGi */ - - 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; - - // Java - import java.io.IOException; - import java.io.PrintWriter; - import java.util.Vector; - - /** - * 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. - */ - public class PDFDocument { - - /** the version of PDF supported */ - protected static final String pdfVersion = "1.2"; - - /** the current character position */ - protected int position = 0; - - /** the character position of each object */ - protected Vector location = 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 /Info object */ - protected PDFInfo info; - - /** the /Resources object */ - protected PDFResources resources; - - protected int xObjectCount = 0; - protected Vector xObjects = new Vector(); - - /** - * creates an empty PDF document - */ - public PDFDocument() { - - /* create the /Root, /Info and /Resources objects */ - this.root = makeRoot(); - this.info = makeInfo(); - this.resources = makeResources(); - } - - /** - * set the producer of the document - * - * @param producer string indicating application producing the PDF - */ - public void setProducer(String producer) { - this.info.setProducer(producer); - } - - /** - * make /Root object as next object - * - * @return the created /Root object - */ - protected PDFRoot makeRoot() { - - /* create a PDFRoot with the next object number and add to - list of objects */ - PDFRoot pdfRoot = new PDFRoot(++this.objectcount); - this.objects.addElement(pdfRoot); - - /* create a new /Pages object to be root of Pages hierarchy - and add to list of objects */ - PDFPages rootPages = new PDFPages(++this.objectcount); - this.objects.addElement(rootPages); - - /* inform the /Root object of the /Pages root */ - pdfRoot.setRootPages(rootPages); - return pdfRoot; - } - - /** - * 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); - this.objects.addElement(pdfInfo); - return pdfInfo; - } - - /** - * make a /Resources object - * - * @return the created /Resources object - */ - private PDFResources makeResources() { - - /* create a PDFResources with the next object number and add - to list of objects */ - PDFResources pdfResources = new PDFResources(++this.objectcount); - this.objects.addElement(pdfResources); - return pdfResources; - } - - /** - * 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 - * @return the created /Font object - */ - public PDFFont makeFont(String fontname, String basefont, - String encoding) { - - /* create a PDFFont with the next object number and add to the - list of objects */ - PDFFont font = new PDFFont(++this.objectcount, fontname, - basefont, encoding); - this.objects.addElement(font); - return font; - } - - public int addImage(FopImage img) { - PDFXObject xObject = new PDFXObject(++this.objectcount, - ++this.xObjectCount, img); - this.objects.addElement(xObject); - this.xObjects.addElement(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); - - /* 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 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); - 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 PrinterWriter to output the document to - */ - public void output(PrintWriter writer) throws IOException { - - /* output the header and increment the character position by - the header's length */ - this.position += outputHeader(writer); - - this.resources.setXObjects(xObjects); - - /* loop through the object numbers */ - for (int i=1; i <= this.objectcount; i++) { - - /* add the position of this object to the list of object - locations */ - this.location.addElement(new Integer(this.position)); - - /* retrieve the object with the current number */ - PDFObject object = (PDFObject)this.objects.elementAt(i-1); - - /* output the object and increment the character position - by the object's length */ - this.position += object.output(writer); - } - - /* output the xref table and increment the character position - by the table's length */ - this.position += outputXref(writer); - - /* output the trailer and flush the Writer */ - outputTrailer(writer); - writer.flush(); - } - - /** - * write the PDF header - * - * @param writer the PrintWriter to write the header to - * @return the number of characters written - */ - protected int outputHeader(PrintWriter writer) throws IOException { - String pdf = "%PDF-" + this.pdfVersion + "\n"; - writer.write(pdf); - return pdf.length(); - } - - /** - * write the trailer - * - * @param writer the PrintWriter to write the trailer to - */ - protected void outputTrailer(PrintWriter writer) throws IOException { - - /* 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>>\nstartxref\n" + this.xref - + "\n%%EOF\n"; - - /* write the trailer */ - writer.write(pdf); - } - - /** - * write the xref table - * - * @param writer the PrintWriter to write the xref table to - * @return the number of characters written - */ - private int outputXref(PrintWriter writer) 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"); - - /* loop through object numbers */ - for (int i=1; i < this.objectcount+1; i++) { - - /* contruct xref entry for object */ - String padding = "0000000000"; - String x = this.location.elementAt(i-1).toString(); - 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 */ - writer.write(pdf.toString()); - return pdf.length(); - } - } - |