public virtual void SetLinkDestinationToPageAppendMode()
{
String input = sourceFolder + "100pages.pdf";
String output = destinationFolder + "setLinkDestinationToPageAppendMode.pdf";
PdfDocument pdfDoc = new PdfDocument(new PdfReader(input), new PdfWriter(output), new StampingProperties()
.UseAppendMode());
PdfPage page1 = pdfDoc.GetPage(1);
PdfPage page2 = pdfDoc.GetPage(2);
PdfIndirectReference page1IndRef = page1.GetPdfObject().GetIndirectReference();
PdfIndirectReference page2IndRef = page2.GetPdfObject().GetIndirectReference();
PdfDictionary aDict = ((PdfLinkAnnotation)page1.GetAnnotations()[0]).GetAction();
new PdfAction(aDict).Put(PdfName.D, PdfExplicitDestination.CreateXYZ(page2, 300, 400, 1).GetPdfObject());
PageFlushingHelper flushingHelper = new PageFlushingHelper(pdfDoc);
flushingHelper.AppendModeFlush(2);
flushingHelper.UnsafeFlushDeep(1);
// annotation is flushed
NUnit.Framework.Assert.IsTrue(aDict.IsFlushed());
// page is not flushed
NUnit.Framework.Assert.IsFalse(page1IndRef.CheckState(PdfObject.FLUSHED));
// page is released
NUnit.Framework.Assert.IsNull(page1IndRef.refersTo);
// page is not flushed
NUnit.Framework.Assert.IsFalse(page2IndRef.CheckState(PdfObject.FLUSHED));
// page is released
NUnit.Framework.Assert.IsNull(page2IndRef.refersTo);
// exception is not thrown
pdfDoc.Close();
}
public virtual void ModifyAnnotationOnlyAppendMode()
{
String input = sourceFolder + "100pages.pdf";
String output = destinationFolder + "modifyAnnotOnly.pdf";
PdfDocument pdfDoc = new PdfDocument(new PdfReader(input), new PdfWriter(output), new StampingProperties()
.UseAppendMode());
PdfPage page = pdfDoc.GetPage(1);
PdfIndirectReference pageIndRef = page.GetPdfObject().GetIndirectReference();
PdfDictionary annotObj = page.GetAnnotations()[0].SetRectangle(new PdfArray(new Rectangle(0, 0, 300, 300))
).SetPage(page).GetPdfObject();
PageFlushingHelper flushingHelper = new PageFlushingHelper(pdfDoc);
flushingHelper.AppendModeFlush(1);
// annotation is flushed
NUnit.Framework.Assert.IsTrue(annotObj.IsFlushed());
// page is not flushed
NUnit.Framework.Assert.IsFalse(pageIndRef.CheckState(PdfObject.FLUSHED));
// page is released
NUnit.Framework.Assert.IsNull(pageIndRef.refersTo);
// exception is not thrown
pdfDoc.Close();
}
private static ICollection<PdfIndirectReference> GetAllUsedNonFlushedOCGs(IDictionary<PdfPage, PdfPage> page2page
, PdfDictionary toOcProperties) {
// NOTE: the PDF is considered to be valid and therefore the presence of OСG in OCProperties.OCGs is not checked
ICollection<PdfIndirectReference> fromUsedOcgs = new LinkedHashSet<PdfIndirectReference>();
// Visit the pages in parallel to find non-flush OSGs
PdfPage[] fromPages = page2page.Keys.ToArray(new PdfPage[0]);
PdfPage[] toPages = page2page.Values.ToArray(new PdfPage[0]);
for (int i = 0; i < toPages.Length; i++) {
PdfPage fromPage = fromPages[i];
PdfPage toPage = toPages[i];
// Copy OCGs from annotations
IList<PdfAnnotation> toAnnotations = toPage.GetAnnotations();
IList<PdfAnnotation> fromAnnotations = fromPage.GetAnnotations();
for (int j = 0; j < toAnnotations.Count; j++) {
if (!toAnnotations[j].IsFlushed()) {
PdfDictionary toAnnotDict = toAnnotations[j].GetPdfObject();
PdfDictionary fromAnnotDict = fromAnnotations[j].GetPdfObject();
PdfAnnotation toAnnot = toAnnotations[j];
PdfAnnotation fromAnnot = fromAnnotations[j];
if (!toAnnotDict.IsFlushed()) {
iText.Kernel.Pdf.OcgPropertiesCopier.GetUsedNonFlushedOCGsFromOcDict(toAnnotDict.GetAsDictionary(PdfName.OC
), fromAnnotDict.GetAsDictionary(PdfName.OC), fromUsedOcgs, toOcProperties);
iText.Kernel.Pdf.OcgPropertiesCopier.GetUsedNonFlushedOCGsFromXObject(toAnnot.GetNormalAppearanceObject(),
fromAnnot.GetNormalAppearanceObject(), fromUsedOcgs, toOcProperties);
iText.Kernel.Pdf.OcgPropertiesCopier.GetUsedNonFlushedOCGsFromXObject(toAnnot.GetRolloverAppearanceObject(
), fromAnnot.GetRolloverAppearanceObject(), fromUsedOcgs, toOcProperties);
iText.Kernel.Pdf.OcgPropertiesCopier.GetUsedNonFlushedOCGsFromXObject(toAnnot.GetDownAppearanceObject(), fromAnnot
.GetDownAppearanceObject(), fromUsedOcgs, toOcProperties);
}
}
}
PdfDictionary toResources = toPage.GetPdfObject().GetAsDictionary(PdfName.Resources);
PdfDictionary fromResources = fromPage.GetPdfObject().GetAsDictionary(PdfName.Resources);
iText.Kernel.Pdf.OcgPropertiesCopier.GetUsedNonFlushedOCGsFromResources(toResources, fromResources, fromUsedOcgs
, toOcProperties);
}
return fromUsedOcgs;
}
