private static iText.Kernel.Pdf.Navigation.PdfStructureDestination Create(PdfStructElem elem, PdfName type
, float left, float bottom, float right, float top, float zoom)
{
return(new iText.Kernel.Pdf.Navigation.PdfStructureDestination().Add(elem).Add(type).Add(left).Add(bottom)
.Add(right).Add(top).Add(zoom));
}
/// <summary>
/// Creates a new
/// <see cref="TagTreePointer"/>
/// which points at given
/// <see cref="iText.Kernel.Pdf.Tagging.PdfStructElem"/>
/// .
/// </summary>
/// <param name="structElem">
/// a
/// <see cref="iText.Kernel.Pdf.Tagging.PdfStructElem"/>
/// for which
/// <see cref="TagTreePointer"/>
/// will be created.
/// </param>
/// <returns>
/// a new
/// <see cref="TagTreePointer"/>
/// .
/// </returns>
public virtual TagTreePointer CreatePointerForStructElem(PdfStructElem structElem)
{
return(new TagTreePointer(structElem, document));
}
internal virtual Object SaveAssociatedObjectForWaitingTag(Object associatedObj, PdfStructElem structElem)
{
associatedObjToWaitingTag.Put(associatedObj, structElem);
return(waitingTagToAssociatedObj.Put(structElem.GetPdfObject(), associatedObj));
}
private void RemoveOldRoot(PdfStructElem oldRoot)
{
TagTreePointer tagPointer = new TagTreePointer(document);
tagPointer.SetCurrentStructElem(oldRoot).RemoveTag();
}
public virtual void StructElemTest04()
{
MemoryStream baos = new MemoryStream();
PdfWriter writer = new PdfWriter(baos);
writer.SetCompressionLevel(CompressionConstants.NO_COMPRESSION);
PdfDocument document = new PdfDocument(writer);
document.SetTagged();
document.GetStructTreeRoot().GetRoleMap().Put(new PdfName("Chunk"), PdfName.Span);
PdfStructElem doc = document.GetStructTreeRoot().AddKid(new PdfStructElem(document, PdfName.Document));
PdfPage page = document.AddNewPage();
PdfCanvas canvas = new PdfCanvas(page);
canvas.BeginText();
canvas.SetFontAndSize(PdfFontFactory.CreateFont(StandardFonts.COURIER), 24);
canvas.SetTextMatrix(1, 0, 0, 1, 32, 512);
PdfStructElem paragraph = doc.AddKid(new PdfStructElem(document, PdfName.P));
PdfStructElem span1 = paragraph.AddKid(new PdfStructElem(document, PdfName.Span, page));
canvas.OpenTag(new CanvasTag(span1.AddKid(new PdfMcrNumber(page, span1))));
canvas.ShowText("Hello ");
canvas.CloseTag();
PdfStructElem span2 = paragraph.AddKid(new PdfStructElem(document, new PdfName("Chunk"), page));
canvas.OpenTag(new CanvasTag(span2.AddKid(new PdfMcrNumber(page, span2))));
canvas.ShowText("World");
canvas.CloseTag();
canvas.EndText();
canvas.Release();
page.Flush();
document.Close();
byte[] bytes = baos.ToArray();
PdfReader reader = new PdfReader(new MemoryStream(bytes));
writer = new PdfWriter(destinationFolder + "structElemTest04.pdf");
writer.SetCompressionLevel(CompressionConstants.NO_COMPRESSION);
document = new PdfDocument(reader, writer);
page = document.GetPage(1);
canvas = new PdfCanvas(page);
PdfStructElem p = (PdfStructElem)document.GetStructTreeRoot().GetKids()[0].GetKids()[0];
canvas.BeginText();
canvas.SetFontAndSize(PdfFontFactory.CreateFont(StandardFonts.COURIER), 24);
canvas.SetTextMatrix(1, 0, 0, 1, 32, 490);
//Inserting span between of 2 existing ones.
span1 = p.AddKid(1, new PdfStructElem(document, PdfName.Span, page));
canvas.OpenTag(new CanvasTag(span1.AddKid(new PdfMcrNumber(page, span1))));
canvas.ShowText("text1");
canvas.CloseTag();
//Inserting span at the end.
span1 = p.AddKid(new PdfStructElem(document, PdfName.Span, page));
canvas.OpenTag(new CanvasTag(span1.AddKid(new PdfMcrNumber(page, span1))));
canvas.ShowText("text2");
canvas.CloseTag();
canvas.EndText();
canvas.Release();
page.Flush();
document.Close();
CompareResult("structElemTest04.pdf", "cmp_structElemTest04.pdf", "diff_structElem_04_");
}
/// <summary>
/// Moves this
/// <see cref="TagTreePointer"/>
/// instance to the tag at which given
/// <see cref="TagTreePointer"/>
/// instance is pointing.
/// </summary>
/// <param name="tagTreePointer">
/// a
/// <see cref="TagTreePointer"/>
/// that points at the tag which will become the current tag
/// of this instance.
/// </param>
/// <returns>
/// this
/// <see cref="TagTreePointer"/>
/// instance.
/// </returns>
public virtual iText.Kernel.Pdf.Tagutils.TagTreePointer MoveToPointer(iText.Kernel.Pdf.Tagutils.TagTreePointer
tagTreePointer)
{
this.currentStructElem = tagTreePointer.currentStructElem;
return(this);
}
internal virtual void SaveConnectionBetweenStructAndModel(IAccessibleElement element, PdfStructElem structElem
)
{
connectedModelToStruct[element] = structElem;
connectedStructToModel[structElem.GetPdfObject()] = element;
}
private PdfStructElem AddNewKid(PdfStructElem kid)
{
return(GetCurrentStructElem().AddKid(GetNextNewKidPosition(), kid));
}
internal virtual iText.Kernel.Pdf.Tagutils.TagTreePointer SetCurrentStructElem(PdfStructElem structElem)
{
currentStructElem = structElem;
return(this);
}
internal override void SetToStructElem(PdfStructElem elem)
{
}
internal BackedAccessibleProperties(PdfStructElem backingElem)
{
this.backingElem = backingElem;
}
internal TagTreePointer(PdfStructElem structElem, PdfDocument document)
{
tagStructureContext = document.GetTagStructureContext();
SetCurrentStructElem(structElem);
}
private PdfStructElem AddNewKid(PdfStructElem kid)
{
return(GetCurrentElemEnsureIndirect().AddKid(GetNextNewKidPosition(), kid));
}
internal virtual iText.Kernel.Pdf.Tagutils.TagTreePointer SetCurrentStructElem(PdfStructElem structElem)
{
if (structElem.GetParent() == null)
{
throw new PdfException(PdfException.StructureElementShallContainParentObject);
}
currentStructElem = structElem;
return(this);
}
public static iText.Kernel.Pdf.Navigation.PdfStructureDestination CreateXYZ(PdfStructElem elem, float left
, float top, float zoom)
{
return(Create(elem, PdfName.XYZ, left, float.NaN, float.NaN, top, zoom));
}
internal virtual IAccessibleElement GetModelConnectedToStruct(PdfStructElem @struct)
{
return(connectedStructToModel.Get(@struct.GetPdfObject()));
}
public static iText.Kernel.Pdf.Navigation.PdfStructureDestination CreateFit(PdfStructElem elem)
{
return(Create(elem, PdfName.Fit, float.NaN, float.NaN, float.NaN, float.NaN, float.NaN));
}
public static iText.Kernel.Pdf.Navigation.PdfStructureDestination CreateFitR(PdfStructElem elem, float left
, float bottom, float right, float top)
{
return(Create(elem, PdfName.FitR, left, bottom, right, top, float.NaN));
}
