internal static PDFObject TreatNewCollectionObject(PDFDirect collection, PDFObject o) { if (!o.IsIndirect) { if (o.Parent != null) { o = ((PDFObject)o.Clone()); } if (o.PDFType == PDFObjectType.tPDFStream) { if (collection.Doc != null) { o = collection.Doc.Indirects.New(o.Direct); } else { o = Library.CreateIndirect(o.Direct); } } o.Parent = collection; return(o); } if (((o.Doc != collection.Doc) && (o.Doc != null)) && (collection.Doc != null)) { throw new InvalidOperationException("Can not connect objects from different documents"); } if ((o.Doc == null) && (collection.Doc != null)) { ((CorePDFObject)o.Indirect).SetDocument(collection.Doc); } return(o.Indirect); }
internal PDFFormXObject(PDFDocument thisDocument, PDFImportedObjectTable importedObjectTable, XPDFForm form) : base(thisDocument) { Debug.Assert(importedObjectTable != null); Debug.Assert(ReferenceEquals(thisDocument, importedObjectTable.Owner)); Elements.SetName(Keys.Type, "/XObject"); Elements.SetName(Keys.Subtype, "/Form"); if (form.IsTemplate) { Debug.Assert(importedObjectTable == null); // TODO more initialization here??? return; } XPDFForm pdfForm = form; // Get import page PDFPages importPages = importedObjectTable.ExternalDocument.Pages; if (pdfForm.PageNumber < 1 || pdfForm.PageNumber > importPages.Count) { PSSR.ImportPageNumberOutOfRange(pdfForm.PageNumber, importPages.Count, form._path); } PDFPage importPage = importPages[pdfForm.PageNumber - 1]; // Import resources PDFItem res = importPage.Elements["/Resources"]; if (res != null) // unlikely but possible { #if true // Get root object PDFObject root = res is PDFReference ? ((PDFReference)res).Value : (PDFDictionary)res; root = ImportClosure(importedObjectTable, thisDocument, root); // If the root was a direct object, make it indirect. if (root.Reference == null) { thisDocument.IrefTable.Add(root); } Debug.Assert(root.Reference != null); Elements["/Resources"] = root.Reference; #else // Get transitive closure PDFObject[] resources = importPage.Owner.Internals.GetClosure(resourcesRoot); int count = resources.Length; #if DEBUG_ for (int idx = 0; idx < count; idx++) { Debug.Assert(resources[idx].XRef != null); Debug.Assert(resources[idx].XRef.Document != null); Debug.Assert(resources[idx].Document != null); if (resources[idx].ObjectID.ObjectNumber == 12) { GetType(); } } #endif // 1st step. Already imported objects are reused and new ones are cloned. for (int idx = 0; idx < count; idx++) { PDFObject obj = resources[idx]; if (importedObjectTable.Contains(obj.ObjectID)) { // external object was already imported PDFReference iref = importedObjectTable[obj.ObjectID]; Debug.Assert(iref != null); Debug.Assert(iref.Value != null); Debug.Assert(iref.Document == Owner); // replace external object by the already clone counterpart resources[idx] = iref.Value; } else { // External object was not imported earlier and must be cloned PDFObject clone = obj.Clone(); Debug.Assert(clone.Reference == null); clone.Document = Owner; if (obj.Reference != null) { // add it to this (the importer) document Owner.irefTable.Add(clone); Debug.Assert(clone.Reference != null); // save old object identifier importedObjectTable.Add(obj.ObjectID, clone.Reference); //Debug.WriteLine("Cloned: " + obj.ObjectID.ToString()); } else { // The root object (the /Resources value) is not an indirect object Debug.Assert(idx == 0); // add it to this (the importer) document Owner.irefTable.Add(clone); Debug.Assert(clone.Reference != null); } // replace external object by its clone resources[idx] = clone; } } #if DEBUG_ for (int idx = 0; idx < count; idx++) { Debug.Assert(resources[idx].XRef != null); Debug.Assert(resources[idx].XRef.Document != null); Debug.Assert(resources[idx].Document != null); if (resources[idx].ObjectID.ObjectNumber == 12) { GetType(); } } #endif // 2nd step. Fix up indirect references that still refers to the import document. for (int idx = 0; idx < count; idx++) { PDFObject obj = resources[idx]; Debug.Assert(obj.Owner != null); FixUpObject(importedObjectTable, importedObjectTable.Owner, obj); } // Set resources key to the root of the clones Elements["/Resources"] = resources[0].Reference; #endif } // Take /Rotate into account. PDFRectangle rect = importPage.Elements.GetRectangle(PDFPage.InheritablePageKeys.MediaBox); // Reduce rotation to 0, 90, 180, or 270. int rotate = (importPage.Elements.GetInteger(PDFPage.InheritablePageKeys.Rotate) % 360 + 360) % 360; //rotate = 0; if (rotate == 0) { // Set bounding box to media box. Elements["/BBox"] = rect; } else { // TODO: Have to adjust bounding box? (I think not, but I'm not sure -> wait for problem) Elements["/BBox"] = rect; // Rotate the image such that it is upright. XMatrix matrix = new XMatrix(); double width = rect.Width; double height = rect.Height; matrix.RotateAtPrepend(-rotate, new XPoint(width / 2, height / 2)); // Translate the image such that its center lies on the center of the rotated bounding box. double offset = (height - width) / 2; if (rotate == 90) { // TODO It seems we can simplify this as the sign of offset changes too. if (height > width) { matrix.TranslatePrepend(offset, offset); // Tested. } else { matrix.TranslatePrepend(offset, offset); // TODO Test case. } } else if (rotate == 270) { // TODO It seems we can simplify this as the sign of offset changes too. if (height > width) { matrix.TranslatePrepend(-offset, -offset); // Tested. } else { matrix.TranslatePrepend(-offset, -offset); // Tested. } } //string item = "[" + PDFEncoders.ToString(matrix) + "]"; //Elements[Keys.Matrix] = new PDFLiteral(item); Elements.SetMatrix(Keys.Matrix, matrix); } // Preserve filter because the content keeps unmodified. PDFContent content = importPage.Contents.CreateSingleContent(); #if !DEBUG content.Compressed = true; #endif PDFItem filter = content.Elements["/Filter"]; if (filter != null) { Elements["/Filter"] = filter.Clone(); } // (no cloning needed because the bytes keep untouched) Stream = content.Stream; // new PDFStream(bytes, this); Elements.SetInteger("/Length", content.Stream.Value.Length); }