// Used in code snippet 1.
static void ProcessStructElement(SElement element, int indent)
{
if (!element.IsValid())
{
return;
}
// Print out the type and title info, if any.
PrintIndent(indent++);
Console.Write("Type: " + element.GetType());
if (element.HasTitle())
{
Console.Write(". Title: " + element.GetTitle());
}
int num = element.GetNumKids();
for (int i = 0; i < num; ++i)
{
// Check is the kid is a leaf node (i.e. it is a ContentItem).
if (element.IsContentItem(i))
{
ContentItem cont = element.GetAsContentItem(i);
ContentItem.Type type = cont.GetType();
Page page = cont.GetPage();
PrintIndent(indent);
Console.Write("Content Item. Part of page #" + page.GetIndex());
PrintIndent(indent);
switch (type)
{
case ContentItem.Type.e_MCID:
case ContentItem.Type.e_MCR:
Console.Write("MCID: " + cont.GetMCID());
break;
case ContentItem.Type.e_OBJR:
{
Console.Write("OBJR ");
Obj ref_obj = cont.GetRefObj();
if (ref_obj != null)
{
Console.Write("- Referenced Object#: " + ref_obj.GetObjNum());
}
}
break;
default:
break;
}
}
else // the kid is another StructElement node.
{
ProcessStructElement(element.GetAsStructElem(i), indent);
}
}
}
// Used in code snippet 2.
static void ProcessElements(ElementReader reader)
{
Element element;
while ((element = reader.Next()) != null) // Read page contents
{
// In this sample we process only paths & text, but the code can be
// extended to handle any element type.
Element.Type type = element.GetType();
if (type == Element.Type.e_path || type == Element.Type.e_text || type == Element.Type.e_path)
{
switch (type)
{
case Element.Type.e_path: // Process path ...
Console.WriteLine();
Console.Write("PATH: ");
break;
case Element.Type.e_text: // Process text ...
Console.WriteLine();
Console.WriteLine("TEXT: " + element.GetTextString());
break;
case Element.Type.e_form: // Process form XObjects
Console.WriteLine();
Console.Write("FORM XObject: ");
//reader.FormBegin();
//ProcessElements(reader);
//reader.End();
break;
}
// Check if the element is associated with any structural element.
// Content items are leaf nodes of the structure tree.
SElement struct_parent = element.GetParentStructElement();
if (struct_parent.IsValid())
{
// Print out the parent structural element's type, title, and object number.
Console.Write(" Type: " + struct_parent.GetType()
+ ", MCID: " + element.GetStructMCID());
if (struct_parent.HasTitle())
{
Console.Write(". Title: " + struct_parent.GetTitle());
}
Console.Write(", Obj#: " + struct_parent.GetSDFObj().GetObjNum());
}
}
}
}
// Used in code snippet 3.
static void ProcessStructElement2(SElement element, Hashtable mcid_doc_map, int indent)
{
if (!element.IsValid())
{
return;
}
// Print out the type and title info, if any.
PrintIndent(indent);
Console.Write("<" + element.GetType());
if (element.HasTitle())
{
Console.Write(" title=\"" + element.GetTitle() + "\"");
}
Console.Write(">");
int num = element.GetNumKids();
for (int i = 0; i < num; ++i)
{
if (element.IsContentItem(i))
{
ContentItem cont = element.GetAsContentItem(i);
if (cont.GetType() == ContentItem.Type.e_MCID)
{
int page_num = cont.GetPage().GetIndex();
if (mcid_doc_map.ContainsKey(page_num))
{
Hashtable mcid_page_map = (Hashtable)(mcid_doc_map[page_num]);
int mcid = cont.GetMCID();
if (mcid_page_map.ContainsKey(mcid))
{
Console.Write(mcid_page_map[mcid]);
}
}
}
}
else // the kid is another StructElement node.
{
ProcessStructElement2(element.GetAsStructElem(i), mcid_doc_map, indent + 1);
}
}
PrintIndent(indent);
Console.Write("</" + element.GetType() + ">");
}
