/// <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);
}
}
}
}
/// <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);
}