public PDFPoint TargetPosition { get; set; }
TargetPosition # get and set (PDFInternalLink)
A PDFPoint that represents the position, in PDF units (1/72 of an inch and bottom-left), of the target page to scroll to. The default value is an empty PDFPoint.
The position is in PDF units (1/72 of an inch and bottom-left). So to go to the top of the page, you must go to "0, PageHeight". You can use the PDFDocumentPage.ConvertPoint helper method to convert from pixel or inches to PDF units and back.
using Leadtools;
using Leadtools.Codecs;
using Leadtools.Controls;
using Leadtools.Pdf;
using Leadtools.Svg;
using Leadtools.WinForms;
public void PDFDocumentParseDocumentStructureExample()
{
string pdfFileName1 = Path.Combine(LEAD_VARS.ImagesDir, @"Leadtools.pdf");
string pdfFileName2 = Path.Combine(LEAD_VARS.ImagesDir, @"Bookmarks.pdf");
// Create a version of the source file with a few bookmarks
PDFFile file = new PDFFile(pdfFileName1);
// Load the pages
file.Load();
List<PDFBookmark> bookmarks = new List<PDFBookmark>();
// We will bookmarks for each page, cascading levels:
// Goto page 1
// Goto page 2
// Goto page 3
// Goto page 4
int level = 0;
for (int i = 0; i < file.Pages.Count; i++)
{
PDFFilePage page = file.Pages[i];
PDFBookmark bookmark = new PDFBookmark();
bookmark.Title = "Goto page " + page.PageNumber.ToString();
bookmark.BookmarkStyle = PDFBookmarkStyle.Plain;
bookmark.Level = level;
bookmark.TargetPageNumber = page.PageNumber;
bookmark.TargetPageFitType = PDFPageFitType.Default;
bookmark.TargetPosition = new PDFPoint(0, page.Height);
bookmark.TargetZoomPercent = 0;
bookmarks.Add(bookmark);
level++;
if (level > 8)
{
// Reset levels
level = 0;
}
}
file.WriteBookmarks(bookmarks, pdfFileName2);
// Create a document for the output file
using (PDFDocument document = new PDFDocument(pdfFileName2))
{
// Now read the bookmarks and internal links in the document
document.ParseDocumentStructure(PDFParseDocumentStructureOptions.InternalLinks | PDFParseDocumentStructureOptions.Bookmarks);
Console.WriteLine("{0} bookmarks found:", document.Bookmarks.Count);
foreach (PDFBookmark bookmark in document.Bookmarks)
{
Console.WriteLine(" Title: {0}, Level: {1}, Target page: {2}", bookmark.Title, bookmark.Level, bookmark.TargetPageNumber);
}
Console.WriteLine("{0} Internal links found:", document.InternalLinks.Count);
foreach (PDFInternalLink internalLink in document.InternalLinks)
{
Console.WriteLine(" Source bounds: {0}, Target page: {1}", internalLink.SourceBounds, internalLink.TargetPageNumber);
}
}
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images";
}
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