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

            if (ch == -1)
                throw new InlineImageParseException("End of content stream reached before end of image data");
            
            bytes[i] = (byte)ch;
        }
        PdfObject ei = ps.readPRObject();
        if (!ei.toString().equals("EI")) {
            // Some PDF producers seem to add another non-whitespace character after the image data.
            // Let's try to handle that case here.
            PdfObject ei2 = ps.readPRObject();
            if (!ei2.toString().equals("EI"))
                throw new InlineImageParseException("EI not found after end of image data");
        }
        return bytes;
    }

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                pngColorType = 2;
            }
        }
        else if (colorspace instanceof PdfArray) {
            PdfArray ca = (PdfArray)colorspace;
            PdfObject tyca = ca.getDirectObject(0);
            if (PdfName.CALGRAY.equals(tyca)) {
                stride = (width * bpc + 7) / 8;
                pngColorType = 0;
            }
            else if (PdfName.CALRGB.equals(tyca)) {
                if (bpc == 8 || bpc == 16) {
                    stride = (width * bpc * 3 + 7) / 8;
                    pngColorType = 2;
                }
            }
            else if (PdfName.ICCBASED.equals(tyca)) {
                PRStream pr = (PRStream)ca.getDirectObject(1);
                int n = pr.getAsNumber(PdfName.N).intValue();
                if (n == 1) {
                    stride = (width * bpc + 7) / 8;
                    pngColorType = 0;
                    icc = PdfReader.getStreamBytes(pr);
                }
                else if (n == 3) {
                    stride = (width * bpc * 3 + 7) / 8;
                    pngColorType = 2;
                    icc = PdfReader.getStreamBytes(pr);
                }
            }
            else if (allowIndexed && PdfName.INDEXED.equals(tyca)) {
                findColorspace(ca.getDirectObject(1), false);
                if (pngColorType == 2) {
                    PdfObject id2 = ca.getDirectObject(3);
                    if (id2 instanceof PdfString) {
                        palette = ((PdfString)id2).getBytes();
                    }
                    else if (id2 instanceof PRStream) {
                        palette = PdfReader.getStreamBytes(((PRStream)id2));

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        PdfArray decode = dictionary.getAsArray(PdfName.DECODE);
        width = dictionary.getAsNumber(PdfName.WIDTH).intValue();
        height = dictionary.getAsNumber(PdfName.HEIGHT).intValue();
        bpc = dictionary.getAsNumber(PdfName.BITSPERCOMPONENT).intValue();
        pngBitDepth = bpc;
        PdfObject colorspace = dictionary.getDirectObject(PdfName.COLORSPACE);
        if (colorspace instanceof PdfName && colorSpaceDic != null){
            PdfObject csLookup = colorSpaceDic.getDirectObject((PdfName)colorspace);
            if (csLookup != null)
                colorspace = csLookup;
        }


        palette = null;
        icc = null;
        stride = 0;
        findColorspace(colorspace, true);
        ByteArrayOutputStream ms = new ByteArrayOutputStream();
        if (pngColorType < 0) {
            if (bpc != 8)
                throw new UnsupportedPdfException(MessageLocalization.getComposedMessage("the.color.depth.1.is.not.supported", bpc));


            if (PdfName.DEVICECMYK.equals(colorspace)) {
            }
            else if (colorspace instanceof PdfArray) {
                PdfArray ca = (PdfArray)colorspace;
                PdfObject tyca = ca.getDirectObject(0);
                if (!PdfName.ICCBASED.equals(tyca))
                    throw new UnsupportedPdfException(MessageLocalization.getComposedMessage("the.color.space.1.is.not.supported", colorspace));
                PRStream pr = (PRStream)ca.getDirectObject(1);
                int n = pr.getAsNumber(PdfName.N).intValue();
                if (n != 4) {

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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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  public static PdfViewerPreferencesImp getViewerPreferences(PdfDictionary catalog) {
    PdfViewerPreferencesImp preferences = new PdfViewerPreferencesImp();
    int prefs = 0;
    PdfName name = null;
    // page layout
    PdfObject obj = PdfReader.getPdfObjectRelease(catalog.get(PdfName.PAGELAYOUT));
    if (obj != null && obj.isName()) {
      name = (PdfName) obj;
      if (name.equals(PdfName.SINGLEPAGE))
        prefs |= PdfWriter.PageLayoutSinglePage;
      else if (name.equals(PdfName.ONECOLUMN))
        prefs |= PdfWriter.PageLayoutOneColumn;
      else if (name.equals(PdfName.TWOCOLUMNLEFT))
        prefs |= PdfWriter.PageLayoutTwoColumnLeft;
      else if (name.equals(PdfName.TWOCOLUMNRIGHT))
        prefs |= PdfWriter.PageLayoutTwoColumnRight;
      else if (name.equals(PdfName.TWOPAGELEFT))
        prefs |= PdfWriter.PageLayoutTwoPageLeft;
      else if (name.equals(PdfName.TWOPAGERIGHT))
        prefs |= PdfWriter.PageLayoutTwoPageRight;
    }
    // page mode
    obj = PdfReader.getPdfObjectRelease(catalog.get(PdfName.PAGEMODE));
    if (obj != null && obj.isName()) {
      name = (PdfName) obj;
      if (name.equals(PdfName.USENONE))
        prefs |= PdfWriter.PageModeUseNone;
      else if (name.equals(PdfName.USEOUTLINES))
        prefs |= PdfWriter.PageModeUseOutlines;
      else if (name.equals(PdfName.USETHUMBS))
        prefs |= PdfWriter.PageModeUseThumbs;
      else if (name.equals(PdfName.FULLSCREEN))
        prefs |= PdfWriter.PageModeFullScreen;
      else if (name.equals(PdfName.USEOC))
        prefs |= PdfWriter.PageModeUseOC;
      else if (name.equals(PdfName.USEATTACHMENTS))
        prefs |= PdfWriter.PageModeUseAttachments;
    }
    // set page layout and page mode preferences
    preferences.setViewerPreferences(prefs);
    // other preferences
    obj = PdfReader.getPdfObjectRelease(catalog
        .get(PdfName.VIEWERPREFERENCES));
    if (obj != null && obj.isDictionary()) {
      PdfDictionary vp = (PdfDictionary) obj;
      for (int i = 0; i < VIEWER_PREFERENCES.length; i++) {
        obj = PdfReader.getPdfObjectRelease(vp.get(VIEWER_PREFERENCES[i]));
        preferences.addViewerPreference(VIEWER_PREFERENCES[i], obj);
      }

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                PdfImage image = (PdfImage)obj1;
                if (image.get(PdfName.SMASK) != null)
                    throw new PdfXConformanceException(MessageLocalization.getComposedMessage("the.smask.key.is.not.allowed.in.images"));
                switch (conf) {
                    case PdfWriter.PDFX1A2001:
                        PdfObject cs = image.get(PdfName.COLORSPACE);
                        if (cs == null)
                            return;
                        if (cs.isName()) {
                            if (PdfName.DEVICERGB.equals(cs))
                                throw new PdfXConformanceException(MessageLocalization.getComposedMessage("colorspace.rgb.is.not.allowed"));
                        }
                        else if (cs.isArray()) {
                            if (PdfName.CALRGB.equals(((PdfArray)cs).getPdfObject(0)))
                                throw new PdfXConformanceException(MessageLocalization.getComposedMessage("colorspace.calrgb.is.not.allowed"));
                        }
                        break;
                }
                break;
            case PdfIsoKeys.PDFISOKEY_GSTATE:
                PdfDictionary gs = (PdfDictionary)obj1;
                // The example PdfXPdfA threw a NullPointerException because gs was null
                if (gs == null)
                  break;
                PdfObject obj = gs.get(PdfName.BM);
                if (obj != null && !PdfGState.BM_NORMAL.equals(obj) && !PdfGState.BM_COMPATIBLE.equals(obj))
                    throw new PdfXConformanceException(MessageLocalization.getComposedMessage("blend.mode.1.not.allowed", obj.toString()));
                obj = gs.get(PdfName.CA);
                double v = 0.0;
                if (obj != null && (v = ((PdfNumber)obj).doubleValue()) != 1.0)
                    throw new PdfXConformanceException(MessageLocalization.getComposedMessage("transparency.is.not.allowed.ca.eq.1", String.valueOf(v)));
                obj = gs.get(PdfName.ca);

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                }
                if (list.isEmpty())
                    break;
                String last = list.get(list.size() - 1).toString();
                if (level == 0 && list.size() == 3 && last.equals(DEF)) {
                    PdfObject key = list.get(0);
                    if (PdfName.REGISTRY.equals(key))
                        cmap.setRegistry(list.get(1).toString());
                    else if (PdfName.ORDERING.equals(key))
                        cmap.setOrdering(list.get(1).toString());
                    else if (CMAPNAME.equals(key))

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   * @param ocgs  the removal list
   */
  private void removeOCGsFromArray(PdfArray array, Set<String> ocgs) {
    if (array == null)
      return;
    PdfObject o;
    PdfDictionary dict;
    List<Integer> remove = new ArrayList<Integer>();
    for (int i = array.size(); i > 0; ) {
      o = array.getDirectObject(--i);
      if (o.isDictionary()) {
        dict = (PdfDictionary)o;
        if (isToBeRemoved(dict, ocgs)) {
          remove.add(i);
        }
        else {
          removeOCGsFromArray(dict, PdfName.OCGS, ocgs);
        }
      }
      if (o.isArray()) {
        removeOCGsFromArray((PdfArray)o, ocgs);
      }
    }
    for (Integer i : remove) {
      array.remove(i);

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      throw new DocumentException(MessageLocalization.getComposedMessage("can.t.read.document.structure"));
    // Storing the parent tree
    parentTree = PdfNumberTree.readTree(structTreeRoot.getAsDict(PdfName.PARENTTREE));
    structTreeRoot.remove(PdfName.STRUCTPARENTS);
    // Examining the StructTreeRoot
    PdfObject object = structTreeRoot.getDirectObject(PdfName.K);
    if (object == null)
      return;
    switch(object.type()) {
    case PdfObject.DICTIONARY:
      LOGGER.info("StructTreeRoot refers to dictionary");
      processStructElems((PdfDictionary)object, structTreeRoot.getAsIndirectObject(PdfName.K));
      break;
    case PdfObject.ARRAY:

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   */
  public int processMCID(PdfNumber structParents, PdfIndirectReference ref)
      throws DocumentException {
    if (ref == null)
      throw new DocumentException(MessageLocalization.getComposedMessage("can.t.read.document.structure"));
    PdfObject object = parentTree.get(structParents.intValue());
    PdfArray array = (PdfArray)PdfReader.getPdfObject(object);
    for (int i = 0; i < array.size(); i++) {
      if (array.getAsIndirectObject(i) == null) {
        array.set(i, ref);
        return i;

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