Examples of com.itextpdf.text.pdf.PdfObject

com.itextpdf.text.pdf.PdfObject
PdfObject is the abstract superclass of all PDF objects.
PDF supports seven basic types of objects: Booleans, numbers, strings, names, arrays, dictionaries and streams. In addition, PDF provides a null object. Objects may be labeled so that they can be referred to by other objects.
All these basic PDF objects are described in the 'Portable Document Format Reference Manual version 1.3' Chapter 4 (pages 37-54). @see PdfNull @see PdfBoolean @see PdfNumber @see PdfString @see PdfName @see PdfArray @see PdfDictionary @see PdfStream @see PdfIndirectReference

    public static Image getInstance(PRIndirectReference ref) throws BadElementException {
        PdfDictionary dic = (PdfDictionary)PdfReader.getPdfObjectRelease(ref);
        int width = ((PdfNumber)PdfReader.getPdfObjectRelease(dic.get(PdfName.WIDTH))).intValue();
        int height = ((PdfNumber)PdfReader.getPdfObjectRelease(dic.get(PdfName.HEIGHT))).intValue();
        Image imask = null;
        PdfObject obj = dic.get(PdfName.SMASK);
        if (obj != null && obj.isIndirect()) {
            imask = getInstance((PRIndirectReference)obj);
        }
        else {
            obj = dic.get(PdfName.MASK);
            if (obj != null && obj.isIndirect()) {
                PdfObject obj2 = PdfReader.getPdfObjectRelease(obj);
                if (obj2 instanceof PdfDictionary)
                    imask = getInstance((PRIndirectReference)obj);
            }
        }
        Image img = new ImgRaw(width, height, 1, 1, null);

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        if (additional == null)
            return;
        PdfArray value = additional.getAsArray(PdfName.COLORSPACE);
        if (value == null)
            return;
        PdfObject cs = simplifyColorspace(value);
        PdfObject newValue;
        if (cs.isName())
            newValue = cs;
        else {
            newValue = value;
            PdfName first = value.getAsName(0);

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        final byte[] result;
        switch (contentObject.type())
        {
            case PdfObject.INDIRECT:
                final PRIndirectReference ref = (PRIndirectReference) contentObject;
                final PdfObject directObject = PdfReader.getPdfObject(ref);
                result = getContentBytesFromContentObject(directObject);
                break;
            case PdfObject.STREAM:
                final PRStream stream = (PRStream) PdfReader.getPdfObject(contentObject);
                result = PdfReader.getStreamBytes(stream);
                break;
            case PdfObject.ARRAY:
                // Stitch together all content before calling processContent(), because
                // processContent() resets state.
                final ByteArrayOutputStream allBytes = new ByteArrayOutputStream();
                final PdfArray contentArray = (PdfArray) contentObject;
                final ListIterator<PdfObject> iter = contentArray.listIterator();
                while (iter.hasNext())
                {
                    final PdfObject element = iter.next();
                    allBytes.write(getContentBytesFromContentObject(element));
                }
                result = allBytes.toByteArray();
                break;
            default:

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     * @throws IOException
     * @since 5.0.1
     */
    public static byte[] getContentBytesForPage(PdfReader reader, int pageNum) throws IOException {
        final PdfDictionary pageDictionary = reader.getPageN(pageNum);
        final PdfObject contentObject = pageDictionary.get(PdfName.CONTENTS);
        if (contentObject == null)
            return new byte[0];
        
        final byte[] contentBytes = ContentByteUtils.getContentBytesFromContentObject(contentObject);
        return contentBytes;

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     * Displays an XObject using the registered handler for this XObject's subtype
     * @param xobjectName the name of the XObject to retrieve from the resource dictionary
     */
    private void displayXObject(PdfName xobjectName) throws IOException {
        PdfDictionary xobjects = resources.getAsDict(PdfName.XOBJECT);
        PdfObject xobject = xobjects.getDirectObject(xobjectName);
        PdfStream xobjectStream = (PdfStream)xobject;
        
        PdfName subType = xobjectStream.getAsName(PdfName.SUBTYPE);
        if (xobject.isStream()){
            XObjectDoHandler handler = xobjectDoHandlers.get(subType);
            if (handler == null)
                handler = xobjectDoHandlers.get(PdfName.DEFAULT);
            handler.handleXObject(this, xobjectStream, xobjects.getAsIndirectObject(xobjectName));
        } else {

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        @Override
        public PdfObject getDirectObject(PdfName key) {
            for (int i = resourcesStack.size() - 1; i >= 0; i--){
                PdfDictionary subResource = resourcesStack.get(i);
                if (subResource != null){
                    PdfObject obj =  subResource.getDirectObject(key);
                    if (obj != null) return obj;
                }
            }
            return super.getDirectObject(key); // shouldn't be necessary, but just in case we've done something crazy
        }

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    private static class ShowTextArray implements ContentOperator{
        public void invoke(PdfContentStreamProcessor processor, PdfLiteral operator, ArrayList<PdfObject> operands) {
            PdfArray array = (PdfArray)operands.get(0);
            float tj = 0;
            for (Iterator<PdfObject> i = array.listIterator(); i.hasNext(); ) {
                PdfObject entryObj = i.next();
                if (entryObj instanceof PdfString){
                    processor.displayPdfString((PdfString)entryObj);
                    tj = 0;
                } else {
                    tj = ((PdfNumber)entryObj).floatValue();

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    public void invoke(PdfContentStreamProcessor processor,
        PdfLiteral operator, ArrayList<PdfObject> operands)
        throws Exception {
        
        PdfObject properties = operands.get(1);
        
      processor.beginMarkedContent((PdfName)operands.get(0), getPropertiesDictionary(properties, processor.resources));
    }

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   * Gets the object that is shown in a row.
   * @param rowIndex  the row number containing the object
   * @return  a PDF object
   */
  protected String getObjectDescriptionByRow(int rowIndex) {
    PdfObject object = objects.getObjectByIndex(rowIndex);
    if (object instanceof PdfNull)
      return "Indirect object";
    return object.toString();
  }

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   */
  public void expandNode(PdfObjectTreeNode node) {
    if (node.getChildCount() > 0) {
      return;
    }
    PdfObject object = node.getPdfObject();
    PdfObjectTreeNode leaf;
    switch (object.type()) {
    case PdfObject.INDIRECT:
      PdfIndirectReference ref = (PdfIndirectReference)object;
      leaf = getNode(ref.getNumber());
      addNodes(node, leaf);
      if (leaf instanceof PdfPagesTreeNode)

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