/// <summary>Removes an annotation from the page.</summary> /// <remarks> /// Removes an annotation from the page. /// <br /><br /> /// NOTE: If document is tagged, PdfDocument's PdfTagStructure instance will point at annotation tag parent after method call. /// </remarks> /// <param name="annotation">an annotation to be removed.</param> /// <returns>this PdfPage instance.</returns> public virtual iText.Kernel.Pdf.PdfPage RemoveAnnotation(PdfAnnotation annotation) { PdfArray annots = GetAnnots(false); if (annots != null) { if (annots.Contains(annotation.GetPdfObject())) { annots.Remove(annotation.GetPdfObject()); } else { annots.Remove(annotation.GetPdfObject().GetIndirectReference()); } if (annots.IsEmpty()) { GetPdfObject().Remove(PdfName.Annots); } } if (GetDocument().IsTagged()) { TagTreePointer tagPointer = GetDocument().GetTagStructureContext().RemoveAnnotationTag(annotation); if (tagPointer != null) { bool standardAnnotTagRole = tagPointer.GetRole().Equals(PdfName.Annot) || tagPointer.GetRole().Equals(PdfName .Form); if (tagPointer.GetKidsRoles().Count == 0 && standardAnnotTagRole) { tagPointer.RemoveTag(); } } } return(this); }
protected internal virtual bool CheckEncryption(PdfStream pdfStream) { if (crypto == null || crypto.IsEmbeddedFilesOnly()) { return(false); } else { PdfObject filter = pdfStream.Get(PdfName.Filter, true); if (filter != null) { if (PdfName.Crypt.Equals(filter)) { return(false); } else { if (filter.GetObjectType() == PdfObject.ARRAY) { PdfArray filters = (PdfArray)filter; if (!filters.IsEmpty() && PdfName.Crypt.Equals(filters.Get(0, true))) { return(false); } } } } return(true); } }
private static bool OrderBranchContainsSetElements(PdfObject arrayObj, PdfArray array, int currentIndex, ICollection <PdfIndirectReference> ocgs, PdfArray toOcgs, PdfDocument toDocument) { if (arrayObj.IsDictionary()) { if (ocgs.Contains(arrayObj.GetIndirectReference())) { return true; } else { if (currentIndex < (array.Size() - 1) && array.Get(currentIndex + 1).IsArray()) { PdfArray nextArray = array.GetAsArray(currentIndex + 1); if (!nextArray.Get(0).IsString()) { bool result = iText.Kernel.Pdf.OcgPropertiesCopier.OrderBranchContainsSetElements(nextArray, array, currentIndex + 1, ocgs, toOcgs, toDocument); if (result && toOcgs != null && !ocgs.Contains(arrayObj.GetIndirectReference())) { // Add the OCG to the OCGs array to register the OCG in document, since it is not used // directly in the document, but is used as a parent for the order group. If it is not added // to the OCGs array, then the OCG will be deleted at the 3rd stage of the /Order entry coping. toOcgs.Add(arrayObj.CopyTo(toDocument, false)); } return result; } } } } else { if (arrayObj.IsArray()) { PdfArray arrayItem = (PdfArray)arrayObj; for (int i = 0; i < arrayItem.Size(); i++) { PdfObject obj = arrayItem.Get(i); if (iText.Kernel.Pdf.OcgPropertiesCopier.OrderBranchContainsSetElements(obj, arrayItem, i, ocgs, toOcgs, toDocument )) { return true; } } if (!arrayItem.IsEmpty() && !arrayItem.Get(0).IsString()) { if (currentIndex > 0 && array.Get(currentIndex - 1).IsDictionary()) { PdfDictionary previousDict = (PdfDictionary)array.Get(currentIndex - 1); return ocgs.Contains(previousDict.GetIndirectReference()); } } } } return false; }
protected internal virtual byte[] DecodeFlateBytes(PdfStream stream, byte[] bytes) { PdfObject filterObject = stream.Get(PdfName.Filter); if (filterObject == null) { return(bytes); } // check if flateDecode filter is on top PdfName filterName; PdfArray filtersArray = null; if (filterObject is PdfName) { filterName = (PdfName)filterObject; } else { if (filterObject is PdfArray) { filtersArray = (PdfArray)filterObject; filterName = filtersArray.GetAsName(0); } else { throw new PdfException(PdfException.FilterIsNotANameOrArray); } } if (!PdfName.FlateDecode.Equals(filterName)) { return(bytes); } // get decode params if present PdfDictionary decodeParams; PdfArray decodeParamsArray = null; PdfObject decodeParamsObject = stream.Get(PdfName.DecodeParms); if (decodeParamsObject == null) { decodeParams = null; } else { if (decodeParamsObject.GetObjectType() == PdfObject.DICTIONARY) { decodeParams = (PdfDictionary)decodeParamsObject; } else { if (decodeParamsObject.GetObjectType() == PdfObject.ARRAY) { decodeParamsArray = (PdfArray)decodeParamsObject; decodeParams = decodeParamsArray.GetAsDictionary(0); } else { throw new PdfException(PdfException.DecodeParameterType1IsNotSupported).SetMessageParams(decodeParamsObject .GetType().ToString()); } } } // decode byte[] res = FlateDecodeFilter.FlateDecode(bytes, true); if (res == null) { res = FlateDecodeFilter.FlateDecode(bytes, false); } bytes = FlateDecodeFilter.DecodePredictor(res, decodeParams); //remove filter and decode params filterObject = null; if (filtersArray != null) { filtersArray.Remove(0); if (filtersArray.Size() == 1) { filterObject = filtersArray.Get(0); } else { if (!filtersArray.IsEmpty()) { filterObject = filtersArray; } } } decodeParamsObject = null; if (decodeParamsArray != null) { decodeParamsArray.Remove(0); if (decodeParamsArray.Size() == 1 && decodeParamsArray.Get(0).GetObjectType() != PdfObject.NULL) { decodeParamsObject = decodeParamsArray.Get(0); } else { if (!decodeParamsArray.IsEmpty()) { decodeParamsObject = decodeParamsArray; } } } if (filterObject == null) { stream.Remove(PdfName.Filter); } else { stream.Put(PdfName.Filter, filterObject); } if (decodeParamsObject == null) { stream.Remove(PdfName.DecodeParms); } else { stream.Put(PdfName.DecodeParms, decodeParamsObject); } return(bytes); }
private static void CopyDArrayField(PdfName fieldToCopy, ICollection<PdfIndirectReference> fromOcgsToCopy, PdfDictionary fromDict, PdfDictionary toDict, PdfDocument toDocument) { if (fromDict.GetAsArray(fieldToCopy) == null) { return; } PdfArray fromArray = fromDict.GetAsArray(fieldToCopy); if (toDict.GetAsArray(fieldToCopy) == null) { toDict.Put(fieldToCopy, new PdfArray()); } PdfArray toArray = toDict.GetAsArray(fieldToCopy); ICollection<PdfIndirectReference> toOcgsToCopy = new HashSet<PdfIndirectReference>(); foreach (PdfIndirectReference fromRef in fromOcgsToCopy) { toOcgsToCopy.Add(fromRef.GetRefersTo().CopyTo(toDocument, false).GetIndirectReference()); } if (PdfName.Order.Equals(fieldToCopy)) { // Stage 1: delete all Order the entire branches from the output document in which the copied OCGs were IList<int> removeIndex = new List<int>(); for (int i = 0; i < toArray.Size(); i++) { PdfObject toOrderItem = toArray.Get(i); if (iText.Kernel.Pdf.OcgPropertiesCopier.OrderBranchContainsSetElements(toOrderItem, toArray, i, toOcgsToCopy , null, null)) { removeIndex.Add(i); } } for (int i = removeIndex.Count - 1; i > -1; i--) { toArray.Remove(removeIndex[i]); } PdfArray toOcgs = toDocument.GetCatalog().GetPdfObject().GetAsDictionary(PdfName.OCProperties).GetAsArray( PdfName.OCGs); // Stage 2: copy all the Order the entire branches in which the copied OСGs were for (int i = 0; i < fromArray.Size(); i++) { PdfObject fromOrderItem = fromArray.Get(i); if (iText.Kernel.Pdf.OcgPropertiesCopier.OrderBranchContainsSetElements(fromOrderItem, fromArray, i, fromOcgsToCopy , toOcgs, toDocument)) { toArray.Add(fromOrderItem.CopyTo(toDocument, false)); } } } else { // Stage 3: remove from Order OCGs not presented in the output document. When forming // the Order dictionary in the PdfOcProperties constructor, only those OCGs that are // in the OCProperties/OCGs array will be taken into account if (PdfName.RBGroups.Equals(fieldToCopy)) { // Stage 1: delete all RBGroups from the output document in which the copied OCGs were for (int i = toArray.Size() - 1; i > -1; i--) { PdfArray toRbGroup = (PdfArray)toArray.Get(i); foreach (PdfObject toRbGroupItemObj in toRbGroup) { if (toOcgsToCopy.Contains(toRbGroupItemObj.GetIndirectReference())) { toArray.Remove(i); break; } } } // Stage 2: copy all the RBGroups in which the copied OCGs were foreach (PdfObject fromRbGroupObj in fromArray) { PdfArray fromRbGroup = (PdfArray)fromRbGroupObj; foreach (PdfObject fromRbGroupItemObj in fromRbGroup) { if (fromOcgsToCopy.Contains(fromRbGroupItemObj.GetIndirectReference())) { toArray.Add(fromRbGroup.CopyTo(toDocument, false)); break; } } } } else { // Stage 3: remove from RBGroups OCGs not presented in the output // document (is in the PdfOcProperties#fillDictionary method) foreach (PdfObject fromObj in fromArray) { iText.Kernel.Pdf.OcgPropertiesCopier.AttemptToAddObjectToArray(fromOcgsToCopy, fromObj, toArray, toDocument ); } } } if (toArray.IsEmpty()) { toDict.Remove(fieldToCopy); } }