예제 #1
0
        /// <summary>
        /// Inserts  pages of the specified document into this document.
        /// </summary>
        /// <param name="index">The index in this document where to insert the page .</param>
        /// <param name="document">The document to be inserted.</param>
        /// <param name="startIndex">The index of the first page to be inserted.</param>
        /// <param name="pageCount">The number of pages to be inserted.</param>
        public void InsertRange(int index, PDFDocument document, int startIndex, int pageCount)
        {
            if (document == null)
            {
                throw new ArgumentNullException("document");
            }

            if (index < 0 || index > Count)
            {
                throw new ArgumentOutOfRangeException("index", "Argument 'index' out of range.");
            }

            int importDocumentPageCount = document.PageCount;

            if (startIndex < 0 || startIndex + pageCount > importDocumentPageCount)
            {
                throw new ArgumentOutOfRangeException("startIndex", "Argument 'startIndex' out of range.");
            }

            if (pageCount > importDocumentPageCount)
            {
                throw new ArgumentOutOfRangeException("pageCount", "Argument 'pageCount' out of range.");
            }

            PDFPage[] insertPages = new PDFPage[pageCount];
            PDFPage[] importPages = new PDFPage[pageCount];

            // 1st create all new pages.
            for (int idx = 0, insertIndex = index, importIndex = startIndex;
                 importIndex < startIndex + pageCount;
                 idx++, insertIndex++, importIndex++)
            {
                PDFPage importPage = document.Pages[importIndex];
                PDFPage page       = ImportExternalPage(importPage);
                insertPages[idx] = page;
                importPages[idx] = importPage;

                Owner.IrefTable.Add(page);

                // Add page substitute to importedObjectTable.
                PDFImportedObjectTable importedObjectTable = Owner.ExternalDocumentTable.GetImportedObjectTable(importPage);
                importedObjectTable.Add(importPage.ObjectID, page.Reference);

                PagesArray.Elements.Insert(insertIndex, page.Reference);

                if (Owner.Settings.TrimMargins.AreSet)
                {
                    page.TrimMargins = Owner.Settings.TrimMargins;
                }
            }
            Elements.SetInteger(Keys.Count, PagesArray.Elements.Count);

            // 2nd copy link annotations that are in the range of the imported pages.
            for (int idx = 0, importIndex = startIndex;
                 importIndex < startIndex + pageCount;
                 idx++, importIndex++)
            {
                PDFPage importPage = document.Pages[importIndex];
                PDFPage page       = insertPages[idx];

                // Get annotations.
                PDFArray annots = importPage.Elements.GetArray(PDFPage.Keys.Annots);
                if (annots != null)
                {
                    PDFAnnotations annotations = new PDFAnnotations(Owner);

                    // Loop through annotations.
                    int count = annots.Elements.Count;
                    for (int idxAnnotation = 0; idxAnnotation < count; idxAnnotation++)
                    {
                        PDFDictionary annot = annots.Elements.GetDictionary(idxAnnotation);
                        if (annot != null)
                        {
                            string subtype = annot.Elements.GetString(PDFAnnotation.Keys.Subtype);
                            if (subtype == "/Link")
                            {
                                bool addAnnotation = false;
                                PDFLinkAnnotation newAnnotation = new PDFLinkAnnotation(Owner);

                                PDFName[] importAnnotationKeyNames = annot.Elements.KeyNames;
                                foreach (PDFName pdfItem in importAnnotationKeyNames)
                                {
                                    PDFItem impItem;
                                    switch (pdfItem.Value)
                                    {
                                    case "/BS":
                                        newAnnotation.Elements.Add("/BS", new PDFLiteral("<</W 0>>"));
                                        break;

                                    case "/F":      // /F 4
                                        impItem = annot.Elements.GetValue("/F");
                                        Debug.Assert(impItem is PDFInteger);
                                        newAnnotation.Elements.Add("/F", impItem.Clone());
                                        break;

                                    case "/Rect":      // /Rect [68.6 681.08 145.71 702.53]
                                        impItem = annot.Elements.GetValue("/Rect");
                                        Debug.Assert(impItem is PDFArray);
                                        newAnnotation.Elements.Add("/Rect", impItem.Clone());
                                        break;

                                    case "/StructParent":      // /StructParent 3
                                        impItem = annot.Elements.GetValue("/StructParent");
                                        Debug.Assert(impItem is PDFInteger);
                                        newAnnotation.Elements.Add("/StructParent", impItem.Clone());
                                        break;

                                    case "/Subtype":      // Already set.
                                        break;

                                    case "/Dest":      // /Dest [30 0 R /XYZ 68 771 0]
                                        impItem = annot.Elements.GetValue("/Dest");
                                        impItem = impItem.Clone();

                                        // Is value an array with 5 elements where the first one is an iref?
                                        PDFArray destArray = impItem as PDFArray;
                                        if (destArray != null && destArray.Elements.Count == 5)
                                        {
                                            if (destArray.Elements[0] is PDFReference iref)
                                            {
                                                iref = RemapReference(insertPages, importPages, iref);
                                                if (iref != null)
                                                {
                                                    destArray.Elements[0] = iref;
                                                    newAnnotation.Elements.Add("/Dest", destArray);
                                                    addAnnotation = true;
                                                }
                                            }
                                        }
                                        break;

                                    default:
#if DEBUG_
                                        Debug - Break.Break(true);
#endif
                                        break;
                                    }
                                }
                                // Add newAnnotations only it points to an imported page.
                                if (addAnnotation)
                                {
                                    annotations.Add(newAnnotation);
                                }
                            }
                        }
                    }

                    // At least one link annotation found?
                    if (annotations.Count > 0)
                    {
                        //Owner._irefTable.Add(annotations);
                        page.Elements.Add(PDFPage.Keys.Annots, annotations);
                    }
                }
            }
        }
예제 #2
0
        /// <summary>
        /// Inserts the specified PDFPage at the specified position to this document and maybe returns a new PDFPage object.
        /// The value returned is a new object if the inserted page comes from a foreign document.
        /// </summary>
        public PDFPage Insert(int index, PDFPage page)
        {
            if (page == null)
            {
                throw new ArgumentNullException("page");
            }

            // Is the page already owned by this document?
            if (page.Owner == Owner)
            {
                // Case: Page is first removed and than inserted again, maybe at another position.
                int count = Count;
                // Check if page is not already part of the document.
                for (int idx = 0; idx < count; idx++)
                {
                    if (ReferenceEquals(this[idx], page))
                    {
                        throw new InvalidOperationException(PSSR.MultiplePageInsert);
                    }
                }

                // TODO: check this case
                // Because the owner of the inserted page is this document we assume that the page was former part of it
                // and it is therefore well-defined.
                Owner.IrefTable.Add(page);
                Debug.Assert(page.Owner == Owner);

                // Insert page in array.
                PagesArray.Elements.Insert(index, page.Reference);

                // Update page count.
                Elements.SetInteger(Keys.Count, PagesArray.Elements.Count);

                return(page);
            }

            // All new page insertions come here.
            if (page.Owner == null)
            {
                // Case: New page was newly created and inserted now.
                page.Document = Owner;

                Owner.IrefTable.Add(page);
                Debug.Assert(page.Owner == Owner);
                PagesArray.Elements.Insert(index, page.Reference);
                Elements.SetInteger(Keys.Count, PagesArray.Elements.Count);
            }
            else
            {
                // Case: Page is from an external document -> import it.
                PDFPage importPage = page;
                page = ImportExternalPage(importPage);
                Owner.IrefTable.Add(page);

                // Add page substitute to importedObjectTable.
                PDFImportedObjectTable importedObjectTable = Owner.ExternalDocumentTable.GetImportedObjectTable(importPage);
                importedObjectTable.Add(importPage.ObjectID, page.Reference);

                PagesArray.Elements.Insert(index, page.Reference);
                Elements.SetInteger(Keys.Count, PagesArray.Elements.Count);
                PDFAnnotations.FixImportedAnnotation(page);
            }
            if (Owner.Settings.TrimMargins.AreSet)
            {
                page.TrimMargins = Owner.Settings.TrimMargins;
            }

            return(page);
        }