public T Get <T>(
PdfString key
) where T : PdfObjectWrapper
{
PdfObjectWrapper names = Get(typeof(T));
return((T)names.GetType().GetProperty("Item", BindingFlags.Public | BindingFlags.Instance).GetValue(names, new object[] { key }));
}
public PdfObjectWrapper Get(
Type type,
PdfString key
)
{
PdfObjectWrapper namedObjects = Get(type);
return((PdfObjectWrapper)namedObjects.GetType().GetMethod("get_Item", BindingFlags.Public | BindingFlags.Instance).Invoke(namedObjects, new object[] { key }));
}
/**
* <summary>Registers a named object.</summary>
* <param name="name">Object name.</param>
* <param name="object">Named object.</param>
* <returns>Registered named object.</returns>
*/
public T Register <T>(
PdfString name,
T @object
) where T : PdfObjectWrapper
{
PdfObjectWrapper namedObjects = Names.Get(@object.GetType());
namedObjects.GetType().GetMethod("set_Item", BindingFlags.Public | BindingFlags.Instance).Invoke(namedObjects, new object[] { name, @object });
return(@object);
}
private void PrintBookmarks(
Bookmarks bookmarks
)
{
if (bookmarks == null)
{
return;
}
foreach (Bookmark bookmark in bookmarks)
{
// Show current bookmark!
Console.WriteLine("Bookmark '" + bookmark.Title + "'");
Console.Write(" Target: ");
PdfObjectWrapper target = bookmark.Target;
if (target is Destination)
{
PrintDestination((Destination)target);
}
else if (target is actions::Action)
{
PrintAction((actions::Action)target);
}
else if (target == null)
{
Console.WriteLine("[not available]");
}
else
{
Console.WriteLine("[unknown type: " + target.GetType().Name + "]");
}
// Show child bookmarks!
PrintBookmarks(bookmark.Bookmarks);
}
}
public override void Run(
)
{
// 1. Opening the PDF file...
string filePath = PromptFileChoice("Please select a PDF file");
using (files::File file = new files::File(filePath))
{
Document document = file.Document;
// 2. Link extraction from the document pages.
TextExtractor extractor = new TextExtractor();
extractor.AreaTolerance = 2; // 2 pt tolerance on area boundary detection.
bool linkFound = false;
foreach (Page page in document.Pages)
{
if (!PromptNextPage(page, !linkFound))
{
Quit();
break;
}
IDictionary <RectangleF?, IList <ITextString> > textStrings = null;
linkFound = false;
// Get the page annotations!
PageAnnotations annotations = page.Annotations;
if (!annotations.Exists())
{
Console.WriteLine("No annotations here.");
continue;
}
// Iterating through the page annotations looking for links...
foreach (Annotation annotation in annotations)
{
if (annotation is Link)
{
linkFound = true;
if (textStrings == null)
{
textStrings = extractor.Extract(page);
}
Link link = (Link)annotation;
RectangleF linkBox = link.Box;
// Text.
/*
* Extracting text superimposed by the link...
* NOTE: As links have no strong relation to page text but a weak location correspondence,
* we have to filter extracted text by link area.
*/
StringBuilder linkTextBuilder = new StringBuilder();
foreach (ITextString linkTextString in extractor.Filter(textStrings, linkBox))
{
linkTextBuilder.Append(linkTextString.Text);
}
Console.WriteLine("Link '" + linkTextBuilder + "' ");
// Position.
Console.WriteLine(
" Position: "
+ "x:" + Math.Round(linkBox.X) + ","
+ "y:" + Math.Round(linkBox.Y) + ","
+ "w:" + Math.Round(linkBox.Width) + ","
+ "h:" + Math.Round(linkBox.Height)
);
// Target.
Console.Write(" Target: ");
PdfObjectWrapper target = link.Target;
if (target is Destination)
{
PrintDestination((Destination)target);
}
else if (target is actions::Action)
{
PrintAction((actions::Action)target);
}
else if (target == null)
{
Console.WriteLine("[not available]");
}
else
{
Console.WriteLine("[unknown type: " + target.GetType().Name + "]");
}
}
}
if (!linkFound)
{
Console.WriteLine("No links here.");
continue;
}
}
}
}
