private static void CopyTo(PdfDocument destDocument, IDictionary<PdfPage, PdfPage> page2page, PdfDocument callingDocument, bool copyFromDestDocument, int insertIndex) { StructureTreeCopier.CopyStructureResult copiedStructure = CopyStructure(destDocument, page2page, callingDocument , copyFromDestDocument); PdfStructTreeRoot destStructTreeRoot = destDocument.GetStructTreeRoot(); destStructTreeRoot.MakeIndirect(destDocument); foreach (PdfDictionary copied in copiedStructure.GetTopsList()) { destStructTreeRoot.AddKidObject(insertIndex, copied); if (insertIndex > -1) { ++insertIndex; } } if (!copyFromDestDocument) { if (!copiedStructure.GetCopiedNamespaces().IsEmpty()) { destStructTreeRoot.GetNamespacesObject().AddAll(copiedStructure.GetCopiedNamespaces()); } PdfDictionary srcRoleMap = callingDocument.GetStructTreeRoot().GetRoleMap(); PdfDictionary destRoleMap = destStructTreeRoot.GetRoleMap(); foreach (KeyValuePair<PdfName, PdfObject> mappingEntry in srcRoleMap.EntrySet()) { if (!destRoleMap.ContainsKey(mappingEntry.Key)) { destRoleMap.Put(mappingEntry.Key, mappingEntry.Value); } else { if (!mappingEntry.Value.Equals(destRoleMap.Get(mappingEntry.Key))) { String srcMapping = mappingEntry.Key + " -> " + mappingEntry.Value; String destMapping = mappingEntry.Key + " -> " + destRoleMap.Get(mappingEntry.Key); ILog logger = LogManager.GetLogger(typeof(StructureTreeCopier)); logger.Warn(String.Format(iText.IO.LogMessageConstant.ROLE_MAPPING_FROM_SOURCE_IS_NOT_COPIED_ALREADY_EXIST , srcMapping, destMapping)); } } } } }
/// <summary> /// Copies structure to a /// <paramref name="destDocument"/> /// and insert it in a specified position in the document. /// <br/><br/> /// NOTE: Works only for /// <c>PdfStructTreeRoot</c> /// that is read from the document opened in reading mode, /// otherwise an exception is thrown. /// <br/> /// Also, to insert a tagged page into existing tag structure, existing tag structure shouldn't be flushed, otherwise /// an exception may be raised. /// </summary> /// <param name="destDocument">document to copy structure to.</param> /// <param name="insertBeforePage">indicates where the structure to be inserted.</param> /// <param name="page2page">association between original page and copied page.</param> public static void CopyTo(PdfDocument destDocument, int insertBeforePage, IDictionary <PdfPage, PdfPage> page2page , PdfDocument callingDocument) { if (!destDocument.IsTagged()) { return; } // Here we separate the structure tree in two parts: struct elems that belong to the pages which indexes are // less then insertBeforePage and those struct elems that belong to other pages. Some elems might belong // to both parts and actually these are the ones that we are looking for. ICollection <PdfObject> firstPartElems = new HashSet <PdfObject>(); PdfStructTreeRoot destStructTreeRoot = destDocument.GetStructTreeRoot(); for (int i = 1; i < insertBeforePage; ++i) { PdfPage pageOfFirstHalf = destDocument.GetPage(i); ICollection <PdfMcr> pageMcrs = destStructTreeRoot.GetPageMarkedContentReferences(pageOfFirstHalf); if (pageMcrs != null) { foreach (PdfMcr mcr in pageMcrs) { firstPartElems.Add(mcr.GetPdfObject()); PdfDictionary top = AddAllParentsToSet(mcr, firstPartElems); if (top.IsFlushed()) { throw new PdfException(PdfException.TagFromTheExistingTagStructureIsFlushedCannotAddCopiedPageTags); } } } } IList <PdfDictionary> clonedTops = new List <PdfDictionary>(); PdfArray tops = destStructTreeRoot.GetKidsObject(); // Now we "walk" through all the elems which belong to the first part, and look for the ones that contain both // kids from first and second part. We clone found elements and move kids from the second part to cloned elems. int lastTopBefore = 0; for (int i_1 = 0; i_1 < tops.Size(); ++i_1) { PdfDictionary top = tops.GetAsDictionary(i_1); if (firstPartElems.Contains(top)) { lastTopBefore = i_1; StructureTreeCopier.LastClonedAncestor lastCloned = new StructureTreeCopier.LastClonedAncestor(); lastCloned.ancestor = top; PdfDictionary topClone = top.Clone(ignoreKeysForClone); topClone.Put(PdfName.P, destStructTreeRoot.GetPdfObject()); lastCloned.clone = topClone; SeparateKids(top, firstPartElems, lastCloned); if (topClone.ContainsKey(PdfName.K)) { topClone.MakeIndirect(destDocument); clonedTops.Add(topClone); } } } for (int i_2 = 0; i_2 < clonedTops.Count; ++i_2) { destStructTreeRoot.AddKidObject(lastTopBefore + 1 + i_2, clonedTops[i_2]); } CopyTo(destDocument, page2page, callingDocument, false, lastTopBefore + 1); }