private static void AnnotationHighLevelAPI(PDFDoc doc)
{
// The following code snippet traverses all annotations in the document
System.Console.WriteLine("Traversing all annotations in the document...");
string uri;
int page_num = 1;
for (PageIterator itr = doc.GetPageIterator(); itr.HasNext(); itr.Next())
{
System.Console.WriteLine("Page " + page_num++ + ": ");
Page page = itr.Current();
int num_annots = page.GetNumAnnots();
for (int i = 0; i < num_annots; ++i)
{
Annot annot = page.GetAnnot(i);
if (!annot.IsValid())
{
continue;
}
System.Console.WriteLine("Annot Type: " + annot.GetSDFObj().Get("Subtype").Value().GetName());
Rect bbox = annot.GetRect();
System.Console.WriteLine(" Position: " + bbox.x1
+ ", " + bbox.y1
+ ", " + bbox.x2
+ ", " + bbox.y2);
switch (annot.GetType())
{
case Annot.Type.e_Link:
{
Link lnk = new Link(annot);
Action action = lnk.GetAction();
if (!action.IsValid())
{
continue;
}
if (action.GetType() == Action.Type.e_GoTo)
{
Destination dest = action.GetDest();
if (!dest.IsValid())
{
System.Console.WriteLine(" Destination is not valid");
}
else
{
int pg_num = dest.GetPage().GetIndex();
System.Console.WriteLine(" Links to: page number " + pg_num + " in this document");
}
}
else if (action.GetType() == Action.Type.e_URI)
{
uri = action.GetSDFObj().Get("URI").Value().GetAsPDFText();
System.Console.WriteLine(" Links to: " + uri);
}
// ...
}
break;
case Annot.Type.e_Widget:
break;
case Annot.Type.e_FileAttachment:
break;
// ...
default:
break;
}
}
}
// Use the high-level API to create new annotations.
Page first_page = doc.GetPage(1);
// Create a hyperlink...
Link hyperlink = Link.Create(doc, new Rect(85, 570, 503, 524), Action.CreateURI(doc, "http://www.pdftron.com"));
first_page.AnnotPushBack(hyperlink);
// Create an intra-document link...
Action goto_page_3 = Action.CreateGoto(Destination.CreateFitH(doc.GetPage(3), 0));
Link link = Link.Create(doc, new Rect(85, 458, 503, 502), goto_page_3);
// Set the annotation border width to 3 points...
Annot.BorderStyle border_style = new Annot.BorderStyle(Annot.BorderStyle.Style.e_solid, 3, 0, 0);
//link.SetBorderStyle(border_style);
link.SetColor(new ColorPt(0, 0, 1));
// Add the new annotation to the first page
first_page.AnnotPushBack(link);
// Create a stamp annotation ...
RubberStamp stamp = RubberStamp.Create(doc, new Rect(30, 30, 300, 200));
stamp.SetIcon("Draft");
first_page.AnnotPushBack(stamp);
// Create a file attachment annotation (embed the 'peppers.jpg').
FileAttachment file_attach = FileAttachment.Create(doc, new Rect(80, 280, 200, 320), (input_path + "peppers.jpg"));
first_page.AnnotPushBack(file_attach);
Ink ink = Ink.Create(doc, new Rect(110, 10, 300, 200));
Point pt3 = new Point(110, 10);
//pt3.x = 110; pt3.y = 10;
ink.SetPoint(0, 0, pt3);
pt3.x = 150; pt3.y = 50;
ink.SetPoint(0, 1, pt3);
pt3.x = 190; pt3.y = 60;
ink.SetPoint(0, 2, pt3);
pt3.x = 180; pt3.y = 90;
ink.SetPoint(1, 0, pt3);
pt3.x = 190; pt3.y = 95;
ink.SetPoint(1, 1, pt3);
pt3.x = 200; pt3.y = 100;
ink.SetPoint(1, 2, pt3);
pt3.x = 166; pt3.y = 86;
ink.SetPoint(2, 0, pt3);
pt3.x = 196; pt3.y = 96;
ink.SetPoint(2, 1, pt3);
pt3.x = 221; pt3.y = 121;
ink.SetPoint(2, 2, pt3);
pt3.x = 288; pt3.y = 188;
ink.SetPoint(2, 3, pt3);
ink.SetColor(new ColorPt(0, 1, 1), 3);
first_page.AnnotPushBack(ink);
}
static void CreateHighlightAnnots(Annotation annotation, System.Drawing.Color highlightColor, Document document, List <Rect> coveredRectsBefore, out List <Rect> coveredRectsAfter)
{
List <Quad> quads = annotation.Quads.Where(q => q.IsContainer == false).ToList();
List <int> pages = quads.Select(q => q.PageIndex).ToList().Distinct().ToList();
pages.Sort();
KnowledgeItem quotation = (KnowledgeItem)annotation.EntityLinks.Where(e => e.Indication == EntityLink.PdfKnowledgeItemIndication).FirstOrDefault().Source;
string quotationText = quotation.Text;
if (string.IsNullOrEmpty(quotationText))
{
quotationText = quotation.CoreStatement;
}
bool TextAlreadyWrittenToAnAnnotation = false;
coveredRectsAfter = coveredRectsBefore;
double currentR = highlightColor.R;
double currentG = highlightColor.G;
double currentB = highlightColor.B;
double currentA = highlightColor.A;
ColorPt colorPt = new ColorPt(
currentR / 255,
currentG / 255,
currentB / 255
);
double highlightOpacity = currentA / 255;
foreach (int pageIndex in pages)
{
pdftron.PDF.Page page = document.GetPage(pageIndex);
if (page == null)
{
continue;
}
if (!page.IsValid())
{
continue;
}
List <Quad> quadsOnThisPage = annotation.Quads.Where(q => q.PageIndex == pageIndex && q.IsContainer == false).Distinct().ToList();
List <Rect> boxes = new List <Rect>();
foreach (Quad quad in quadsOnThisPage)
{
boxes.Add(new Rect(quad.MinX, quad.MinY, quad.MaxX, quad.MaxY));
}
Annot newAnnot = null;
// If we want to make the later annotation invisible, we should uncomment the following if then else, and comment out the line after that
if (boxes.Select(b => new { b.x1, b.y1, b.x2, b.y2 }).Intersect(coveredRectsAfter.Select(b => new { b.x1, b.y1, b.x2, b.y2 })).Count() == boxes.Count())
{
newAnnot = CreateSingleHighlightAnnot(document, boxes, colorPt, 0);
}
else
{
newAnnot = CreateSingleHighlightAnnot(document, boxes, colorPt, highlightOpacity);
}
// newAnnot = CreateSingleHighlightAnnot(document, boxes, colorPt, highlightOpacity);
if (!TextAlreadyWrittenToAnAnnotation)
{
newAnnot.SetContents(quotationText);
TextAlreadyWrittenToAnAnnotation = true;
}
page.AnnotPushBack(newAnnot);
if (newAnnot.IsValid() == false)
{
continue;
}
if (newAnnot.GetAppearance() == null)
{
newAnnot.RefreshAppearance();
}
coveredRectsAfter.AddRange(boxes);
}
}