Examples of com.lowagie.text.pdf.PdfObject

com.lowagie.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

  /**
   * Defines the sort order of the field (ascending or descending).
   * @param ascending  true is the default, use false for descending order
   */
  public void setSortOrder(boolean ascending) {
    PdfObject o = get(PdfName.S);
    if (o instanceof PdfName) {
      put(PdfName.A, new PdfBoolean(ascending));
    }
    else {
      throw new IllegalArgumentException(MessageLocalization.getComposedMessage("you.have.to.define.a.boolean.array.for.this.collection.sort.dictionary"));

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  /**
   * Defines the sort order of the field (ascending or descending).
   * @param ascending  an array with every element corresponding with a name of a field.
   */
  public void setSortOrder(boolean[] ascending) {
    PdfObject o = get(PdfName.S);
    if (o instanceof PdfArray) {
      if (((PdfArray)o).size() != ascending.length) {
        throw new IllegalArgumentException(MessageLocalization.getComposedMessage("the.number.of.booleans.in.this.array.doesn.t.correspond.with.the.number.of.fields"));
      }
      PdfArray array = new PdfArray();

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   * You can only use this method after you have set the value of the item.
   * @param prefix  a prefix
   */
  public void setPrefix(String key, String prefix) {
    PdfName fieldname = new PdfName(key);
    PdfObject o = get(fieldname);
    if (o == null)
      throw new IllegalArgumentException(MessageLocalization.getComposedMessage("you.must.set.a.value.before.adding.a.prefix"));
    PdfDictionary dict = new PdfDictionary(PdfName.COLLECTIONSUBITEM);
    dict.put(PdfName.D, o);
    dict.put(PdfName.P, new PdfString(prefix, PdfObject.TEXT_UNICODE));

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                dic.put(PdfName.GAMMA, new PdfNumber(gamma));
                dic.put(PdfName.WHITEPOINT, new PdfLiteral("[1 1 1]"));
                array.add(dic);
            }
            else {
                PdfObject wp = new PdfLiteral("[1 1 1]");
                array.add(PdfName.CALRGB);
                if (gamma != 1f) {
                    PdfArray gm = new PdfArray();
                    PdfNumber n = new PdfNumber(gamma);
                    gm.add(n);

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     */
    private byte[] getContentBytesForPage(int pageNum) throws IOException {
        RandomAccessFileOrArray f = reader.getSafeFile();
        try{
            final PdfDictionary pageDictionary = reader.getPageN(pageNum);
            final PdfObject contentObject = pageDictionary.get(PdfName.CONTENTS);
            final byte[] contentBytes = getContentBytesFromContentObject(contentObject);
            return contentBytes;
        } finally {    
            f.close();
        }

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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 iter = contentArray.listIterator();
              while (iter.hasNext())
              {
                final PdfObject element = (PdfObject) iter.next();
                allBytes.write(getContentBytesFromContentObject(element));
              }
              result = allBytes.toByteArray();
              break;
            default:

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        StringBuffer builder = new StringBuffer();
        builder.append('(');
        List subDictionaries = new ArrayList();
        for (Iterator i = dic.getKeys().iterator(); i.hasNext(); ) {
            PdfName key = (PdfName)i.next();
            PdfObject val = dic.getDirectObject(key);
            if (val.isDictionary())
                subDictionaries.add(key);
            builder.append(key);
            builder.append('=');
            builder.append(val);
            builder.append(", ");

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    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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                        PdfObject tuValue = dict.get(new PdfName("/TU"));
                        annotation = tuValue.toString();
                    }
                    */
                    
                    PdfObject typeValue = null;
                    PdfObject tuValue = null;
                    
                    Set dictKeys = dict.getKeys();
                    Iterator dictKeyIter = dictKeys.iterator();
                    while (dictKeyIter.hasNext()) {
                        PdfName dictKeyName = (PdfName) dictKeyIter.next();
                        PdfObject dictObject = dict.get(dictKeyName);
                        
                        if ("/Type".equals(dictKeyName.toString())) {
                            typeValue = dictObject;
                        } else if ("/TU".equals(dictKeyName.toString())) {
                            tuValue = dictObject;

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