public static SelectInfo?GetSelection(this PdfBookmark bookmark,
PdfDocument document)
{
PdfDestination destination = bookmark.Action?.Destination ?? bookmark.Destination;
if (destination == null)
{
return(null);
}
int firstPage = destination.PageIndex;
int lastPage = document.Pages.Count - 1;
PdfBookmark nextBookmark = bookmark.GetNextBookmark(document);
if (nextBookmark != null)
{
PdfDestination nextDestination = nextBookmark.Action?.Destination ?? nextBookmark.Destination;
lastPage = nextDestination.PageIndex - 1 > firstPage
? nextDestination.PageIndex - 1
: firstPage;
}
return(new SelectInfo
{
StartPage = firstPage,
EndPage = lastPage,
StartIndex = 0,
EndIndex = document.Pages[lastPage].Text.CountChars,
});
}
public static bool Contains(this PdfBookmark bookmark, PdfDocument document, int pageIdx)
{
PdfDestination destination = bookmark.Action?.GetDestination() ?? bookmark.Destination;
if (destination == null)
{
return(false);
}
int firstPage = destination.PageIndex;
PdfDestination nextDestination = null;
while (nextDestination == null)
{
var nextBookmark = bookmark.GetNextBookmark(document);
if (nextBookmark == null)
{
return(pageIdx >= firstPage);
}
nextDestination = nextBookmark.Action?.GetDestination() ?? nextBookmark.Destination;
bookmark = nextBookmark;
}
int lastPage = nextDestination.PageIndex - 1 > firstPage
? nextDestination.PageIndex - 1
: firstPage;
return(pageIdx >= firstPage && pageIdx <= lastPage);
}
