/// <summary>
/// Gets the <see cref="PdfSharp.Pdf.Annotations.PdfAnnotation"/> at the specified index.
/// </summary>
public PdfAnnotation this[int index]
{
get
{
PdfReference iref = null;
PdfDictionary dict = null;
PdfItem item = Elements[index];
if ((iref = item as PdfReference) != null)
{
Debug.Assert(iref.Value is PdfDictionary, "Reference to dictionary expected.");
dict = (PdfDictionary)iref.Value;
}
else
{
Debug.Assert(item is PdfDictionary, "Dictionary expected.");
dict = (PdfDictionary)item;
}
PdfAnnotation annotation = dict as PdfAnnotation;
if (annotation == null)
{
annotation = new PdfGenericAnnotation(dict);
if (iref == null)
{
Elements[index] = annotation;
}
}
return(annotation);
}
}
/// <summary>
/// Gets the <see cref="PdfSharp.Pdf.Annotations.PdfAnnotation"/> at the specified index.
/// </summary>
public PdfAnnotation this[int index]
{
get
{
PdfReference iref;
PdfDictionary dict;
PdfItem item = Elements[index];
if ((iref = item as PdfReference) != null)
{
Debug.Assert(iref.Value is PdfDictionary, "Reference to dictionary expected.");
dict = (PdfDictionary)iref.Value;
}
else
{
Debug.Assert(item is PdfDictionary, "Dictionary expected.");
dict = (PdfDictionary)item;
}
PdfAnnotation annotation = dict as PdfAnnotation;
if (annotation == null)
{
if (dict.Elements.GetString(PdfAnnotation.Keys.Subtype) == "/Widget")
{
annotation = new PdfWidgetAnnotation(dict);
}
else if (dict.Elements.GetString(PdfAnnotation.Keys.Subtype) == "/Link")
{
annotation = new PdfLinkAnnotation(dict);
}
else if (dict.Elements.GetString(PdfAnnotation.Keys.Subtype) == "/Stamp")
{
annotation = new PdfRubberStampAnnotation(dict);
}
else if (dict.Elements.GetString(PdfAnnotation.Keys.Subtype) == "/Text")
{
annotation = new PdfTextAnnotation(dict);
}
else
{
annotation = new PdfGenericAnnotation(dict);
}
if (iref == null)
{
Elements[index] = annotation;
}
}
return(annotation);
}
}
/// <summary>
/// Gets the <see cref="PdfSharp.Pdf.Annotations.PdfAnnotation"/> with the specified title. Returns null if not found
/// </summary>
public PdfAnnotation this[string name]
{
get
{
if (_annotationsLookup.ContainsKey(name))
{
return(_annotationsLookup[name]);
}
PdfReference iref;
PdfDictionary dict;
for (int i = 0; i < Elements.Count; i++)
{
if ((iref = Elements[i] as PdfReference) != null)
{
dict = (PdfDictionary)iref.Value;
}
else
{
dict = (PdfDictionary)Elements[i];
}
if (!string.Equals(name, dict.Elements.GetString(PdfAnnotation.Keys.T)))
{
continue;
}
// Found it. Track it for quicker lookup in the future.
PdfAnnotation annotation = dict as PdfAnnotation;
if (annotation == null)
{
annotation = new PdfGenericAnnotation(dict);
if (iref == null)
{
Elements[i] = annotation;
}
}
_annotationsLookup.Add(annotation.Title, annotation);
return(annotation);
}
return(null);
}
}
/// <summary>
/// Gets the <see cref="PdfSharp.Pdf.Annotations.PdfAnnotation"/> at the specified index.
/// </summary>
public PdfAnnotation this[int index]
{
get
{
PdfReference iref = null;
PdfDictionary dict = null;
PdfItem item = Elements[index];
if ((iref = item as PdfReference) != null)
{
Debug.Assert(iref.Value is PdfDictionary, "Reference to dictionary expected.");
dict = (PdfDictionary)iref.Value;
}
else
{
Debug.Assert(item is PdfDictionary, "Dictionary expected.");
dict = (PdfDictionary)item;
}
PdfAnnotation annotation = dict as PdfAnnotation;
if (annotation == null)
{
annotation = new PdfGenericAnnotation(dict);
if (iref == null)
Elements[index] = annotation;
}
return annotation;
}
}
