///// <summary>
///// Imports an object and its transitive closure to the specified document.
///// </summary>
/// <param name="importedObjectTable">The imported object table of the owner for the external document.</param>
/// <param name="owner">The document that owns the cloned objects.</param>
/// <param name="externalObject">The root object to be cloned.</param>
/// <returns>The clone of the root object</returns>
internal static PdfObject ImportClosure(PdfImportedObjectTable importedObjectTable, PdfDocument owner, PdfObject externalObject)
{
Debug.Assert(ReferenceEquals(importedObjectTable.Owner, owner), "importedObjectTable does not belong to the owner.");
Debug.Assert(ReferenceEquals(importedObjectTable.ExternalDocument, externalObject.Owner),
"The ExternalDocument of the importedObjectTable does not belong to the owner of object to be imported.");
// Get transitive closure of external object.
PdfObject[] elements = externalObject.Owner.Internals.GetClosure(externalObject);
int count = elements.Length;
#if DEBUG_
for (int idx = 0; idx < count; idx++)
{
Debug.Assert(elements[idx].XRef != null);
Debug.Assert(elements[idx].XRef.Document != null);
Debug.Assert(elements[idx].Document != null);
if (elements[idx].ObjectID.ObjectNumber == 12)
{
GetType();
}
}
#endif
// 1st loop. Already imported objects are reused and new ones are cloned.
for (int idx = 0; idx < count; idx++)
{
PdfObject obj = elements[idx];
Debug.Assert(!ReferenceEquals(obj.Owner, owner));
if (importedObjectTable.Contains(obj.ObjectID))
{
#if DEBUG_
if (obj.ObjectID.ObjectNumber == 5894)
{
obj.GetType();
}
#endif
// Case: 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 cloned counterpart.
elements[idx] = iref.Value;
}
else
{
// Case: External object was not yet imported earlier and must be cloned.
PdfObject clone = obj.Clone();
Debug.Assert(clone.Reference == null);
clone.Document = owner;
if (obj.Reference != null)
{
// Case: The cloned object was an indirect object.
// Add clone to new owner document.
owner._irefTable.Add(clone);
Debug.Assert(clone.Reference != null);
// Save an association from old object identifier to new iref.
importedObjectTable.Add(obj.ObjectID, clone.Reference);
}
else
{
// Case: The cloned object was a direct object.
// Only the root object can be a direct object.
Debug.Assert(idx == 0);
}
// Replace external object by its clone.
elements[idx] = clone;
}
}
#if DEBUG_
for (int idx = 0; idx < count; idx++)
{
//Debug.Assert(elements[idx].Reference != null);
//Debug.Assert(elements[idx].Reference.Document != null);
Debug.Assert(elements[idx].IsIndirect == false);
Debug.Assert(elements[idx].Owner != null);
//if (elements[idx].ObjectID.ObjectNumber == 12)
// GetType();
}
#endif
// 2nd loop. Fix up indirect references that still refers to the external document.
for (int idx = 0; idx < count; idx++)
{
PdfObject obj = elements[idx];
Debug.Assert(owner != null);
FixUpObject(importedObjectTable, importedObjectTable.Owner, obj);
}
// Return the imported root object.
return(elements[0]);
}
///// <summary>
///// Creates a deep copy of the specified value and its transitive closure and adds the
///// new objects to the specified owner document.
///// </summary>
/// <param name="owner">The document that owns the cloned objects.</param>
/// <param name="externalObject">The root object to be cloned.</param>
/// <returns>The clone of the root object</returns>
internal static PdfObject DeepCopyClosure(PdfDocument owner, PdfObject externalObject)
{
// Get transitive closure.
PdfObject[] elements = externalObject.Owner.Internals.GetClosure(externalObject);
int count = elements.Length;
#if DEBUG_
for (int idx = 0; idx < count; idx++)
{
Debug.Assert(elements[idx].XRef != null);
Debug.Assert(elements[idx].XRef.Document != null);
Debug.Assert(elements[idx].Document != null);
if (elements[idx].ObjectID.ObjectNumber == 12)
{
GetType();
}
}
#endif
// 1st loop. Replace all objects by their clones.
PdfImportedObjectTable iot = new PdfImportedObjectTable(owner, externalObject.Owner);
for (int idx = 0; idx < count; idx++)
{
PdfObject obj = elements[idx];
PdfObject clone = obj.Clone();
Debug.Assert(clone.Reference == null);
clone.Document = owner;
if (obj.Reference != null)
{
// Case: The cloned object was an indirect object.
// Add clone to new owner document.
owner._irefTable.Add(clone);
// The clone gets an iref by adding it to its new owner.
Debug.Assert(clone.Reference != null);
// Save an association from old object identifier to new iref.
iot.Add(obj.ObjectID, clone.Reference);
}
else
{
// Case: The cloned object was an direct object.
// Only the root object can be a direct object.
Debug.Assert(idx == 0);
}
// Replace external object by its clone.
elements[idx] = clone;
}
#if DEBUG_
for (int idx = 0; idx < count; idx++)
{
Debug.Assert(elements[idx]._iref != null);
Debug.Assert(elements[idx]._iref.Document != null);
Debug.Assert(resources[idx].Document != null);
if (elements[idx].ObjectID.ObjectNumber == 12)
{
GetType();
}
}
#endif
// 2nd loop. Fix up all indirect references that still refers to the import document.
for (int idx = 0; idx < count; idx++)
{
PdfObject obj = elements[idx];
Debug.Assert(obj.Owner == owner);
FixUpObject(iot, owner, obj);
}
// Return the clone of the former root object.
return(elements[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.FormTable.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);
}
/// <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.FormTable.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)
{
PdfReference iref = destArray.Elements[0] as PdfReference;
if (iref != null)
{
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);
}
}
}
}
/// <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);
// @PDF/UA: Pages must not be moved.
if (_document._uaManager != null)
{
_document.Events.OnPageAdded(_document, new PageEventArgs {
Page = page, PageIndex = index, EventType = PageEventType.Moved
});
}
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);
// @PDF/UA: Page was created.
if (_document._uaManager != null)
{
_document.Events.OnPageAdded(_document, new PageEventArgs {
Page = page, PageIndex = index, EventType = PageEventType.Created
});
}
}
else
{
#if true
// original code
// 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.FormTable.GetImportedObjectTable(importPage);
importedObjectTable.Add(importPage.ObjectID, page.Reference);
PagesArray.Elements.Insert(index, page.Reference);
Elements.SetInteger(Keys.Count, PagesArray.Elements.Count);
PdfAnnotations.FixImportedAnnotation(page);
#else
var externalPage = page;
// Case: Page is from an external document -> import it.
page = ImportExternalPage(externalPage);
Owner._irefTable.Add(page);
// Add page substitute to importedObjectTable.
PdfImportedObjectTable importedObjectTable = Owner.FormTable.GetImportedObjectTable(externalPage);
importedObjectTable.Add(externalPage.ObjectID, page.Reference);
PagesArray.Elements.Insert(index, page.Reference);
Elements.SetInteger(Keys.Count, PagesArray.Elements.Count);
PagesArray.Elements.Insert(index, page.Reference);
Elements.SetInteger(PdfPages.Keys.Count, PagesArray.Elements.Count);
// Import AcroFields, after the external Page has been imported and we have a valid ObjectID for the imported Page
ImportAcroFields(page, externalPage);
PdfAnnotations.FixImportedAnnotation(page);
#endif
// @PDF/UA: Page was imported.
if (_document._uaManager != null)
{
_document.Events.OnPageAdded(_document, new PageEventArgs {
Page = page, PageIndex = index, EventType = PageEventType.Imported
});
}
}
if (Owner.Settings.TrimMargins.AreSet)
{
page.TrimMargins = Owner.Settings.TrimMargins;
}
return(page);
}