public void Contains()
{
PdfRectangle rectangle = new PdfRectangle(10, 10, 20, 20);
Assert.True(rectangle.Contains(new PdfPoint(15, 15)));
Assert.False(rectangle.Contains(new PdfPoint(10, 15)));
Assert.True(rectangle.Contains(new PdfPoint(10, 15), true));
Assert.False(rectangle.Contains(new PdfPoint(100, 100), true));
}
public static IReadOnlyList <Hyperlink> GetHyperlinks(Page page, IPdfTokenScanner pdfScanner, AnnotationProvider annotationProvider)
{
var result = new List <Hyperlink>();
var annotations = annotationProvider.GetAnnotations();
foreach (var annotation in annotations)
{
if (annotation.Type != AnnotationType.Link)
{
continue;
}
// Must be a link annotation with an action of type /URI.
if (!annotation.AnnotationDictionary.TryGet(NameToken.A, pdfScanner, out DictionaryToken actionDictionary) ||
!actionDictionary.TryGet(NameToken.S, pdfScanner, out NameToken actionType) ||
actionType != NameToken.Uri)
{
continue;
}
// (Required) The uniform resource identifier to resolve, encoded in 7-bit ASCII.
if (!actionDictionary.TryGet(NameToken.Uri, pdfScanner, out IDataToken <string> uriStringToken))
{
continue;
}
var bounds = annotation.Rectangle;
// Build in tolerance for letters close to the link region.
var tolerantBounds = new PdfRectangle(bounds.TopLeft.Translate(-0.5, 0), bounds.BottomRight.Translate(0.5, 0));
var linkLetters = new List <Letter>();
foreach (var letter in page.Letters)
{
if (tolerantBounds.Contains(letter.Location, true))
{
linkLetters.Add(letter);
}
}
var words = DefaultWordExtractor.Instance.GetWords(linkLetters);
var presentationText = string.Join(" ", words.Select(x => x.Text));
result.Add(new Hyperlink(bounds, linkLetters, presentationText, uriStringToken.Data, annotation));
}
return(result);
}
public static string ExtractStringFromPdf(Stream stream)
{
var stringBuilder = new StringBuilder();
using var document = PdfDocument.Open(stream);
foreach (var page in document.GetPages())
{
var areaWithoutBorders = new PdfRectangle(0, 50, page.Width, page.Height - 50);
var words = page.GetWords().Where(w => areaWithoutBorders.Contains(w.BoundingBox)).ToList();
var pageText = string.Join(" ", words);
stringBuilder.Append(pageText);
}
return(stringBuilder.ToString());
}
