/** convenience method. Given an imported page, set our "globals" */ protected int setFromIPage(PdfImportedPage iPage) { int pageNum = iPage.getPageNumber(); PdfReaderInstance inst = currentPdfReaderInstance = iPage.getPdfReaderInstance(); reader = inst.getReader(); setFromReader(reader); return pageNum; }
/** * Gets the content stream of a page as a PdfStream object. * * @param pageNumber the page of which you want the stream * @param compressionLevel the compression level you want to apply to the stream * @return a PdfStream object * @since 2.1.3 (the method already existed without param compressionLevel) */ PdfStream getFormXObject(int pageNumber, int compressionLevel) throws IOException { PdfDictionary page = reader.getPageNRelease(pageNumber); PdfObject contents = PdfReader.getPdfObjectRelease(page.get(PdfName.CONTENTS)); PdfDictionary dic = new PdfDictionary(); byte bout[] = null; if (contents != null) { if (contents.isStream()) dic.putAll((PRStream) contents); else bout = reader.getPageContent(pageNumber, file); } else bout = new byte[0]; dic.put(PdfName.RESOURCES, PdfReader.getPdfObjectRelease(page.get(PdfName.RESOURCES))); dic.put(PdfName.TYPE, PdfName.XOBJECT); dic.put(PdfName.SUBTYPE, PdfName.FORM); PdfImportedPage impPage = (PdfImportedPage) importedPages.get(new Integer(pageNumber)); dic.put(PdfName.BBOX, new PdfRectangle(impPage.getBoundingBox())); PdfArray matrix = impPage.getMatrix(); if (matrix == null) dic.put(PdfName.MATRIX, IDENTITYMATRIX); else dic.put(PdfName.MATRIX, matrix); dic.put(PdfName.FORMTYPE, ONE); PRStream stream; if (bout == null) { stream = new PRStream((PRStream) contents, dic); } else { stream = new PRStream(reader, bout, compressionLevel); stream.putAll(dic); } return stream; }
void writeAllPages() throws IOException { try { file.reOpen(); for (Iterator it = importedPages.values().iterator(); it.hasNext(); ) { PdfImportedPage ip = (PdfImportedPage) it.next(); writer.addToBody( ip.getFormXObject(writer.getCompressionLevel()), ip.getIndirectReference()); } writeAllVisited(); } finally { try { reader.close(); file.close(); } catch (Exception e) { // Empty on purpose } } }
/** * Add an imported page to our output * * @param iPage an imported page * @throws IOException, BadPdfFormatException */ public void addPage(PdfImportedPage iPage) throws IOException, BadPdfFormatException { int pageNum = setFromIPage(iPage); PdfDictionary thePage = reader.getPageN(pageNum); PRIndirectReference origRef = reader.getPageOrigRef(pageNum); reader.releasePage(pageNum); RefKey key = new RefKey(origRef); PdfIndirectReference pageRef; IndirectReferences iRef = indirects.get(key); if (iRef != null && !iRef.getCopied()) { pageReferences.add(iRef.getRef()); iRef.setCopied(); } pageRef = getCurrentPage(); if (iRef == null) { iRef = new IndirectReferences(pageRef); indirects.put(key, iRef); } iRef.setCopied(); PdfDictionary newPage = copyDictionary(thePage); root.addPage(newPage); iPage.setCopied(); ++currentPageNumber; }
/** * Create a page stamp. New content and annotations, including new fields, are allowed. The fields * added cannot have parents in another pages. This method modifies the PdfReader instance. * * <p>The general usage to stamp something in a page is: * * <p> * * <pre> * PdfImportedPage page = copy.getImportedPage(reader, 1); * PdfCopy.PageStamp ps = copy.createPageStamp(page); * ps.addAnnotation(PdfAnnotation.createText(copy, new Rectangle(50, 180, 70, 200), "Hello", "No Thanks", true, "Comment")); * PdfContentByte under = ps.getUnderContent(); * under.addImage(img); * PdfContentByte over = ps.getOverContent(); * over.beginText(); * over.setFontAndSize(bf, 18); * over.setTextMatrix(30, 30); * over.showText("total page " + totalPage); * over.endText(); * ps.alterContents(); * copy.addPage(page); * </pre> * * @param iPage an imported page * @return the <CODE>PageStamp</CODE> */ public PageStamp createPageStamp(PdfImportedPage iPage) { int pageNum = iPage.getPageNumber(); PdfReader reader = iPage.getPdfReaderInstance().getReader(); PdfDictionary pageN = reader.getPageN(pageNum); return new PageStamp(reader, pageN, this); }