This aint pretty. It's just a proof of concept written by a Java hacking
fool. I'm going to refactor if I get approval. :)
Basically you need to start with this (document is a PDDocument):
PDDocumentCatalog log = document.getDocumentCatalog();
PDDocumentNameDictionary dic = log.getNames();
PDDestinationNameTreeNode dests = dic.getDests();
Okay, so the destinations will be available via the getNames() method of
dests, if they exist at that level. If they do not, you need to bore down by
using the getKids() method, and check those items for names. If those don't
work, bore down, etc. Here I print out all the named destinations, and
change the zoom property, for a particular type of PDF; you may need to
land at a different level of PDDestinationNameTreeNode.
The PDPageXYZDestination class is the thing to keep an eye on.
private static boolean hasDests(PDDestinationNameTreeNode dests) throws
IOException {
if (dests.getNames() == null) {
List kids = dests.getKids();
List<PDNameTreeNode> destList = kids;
System.out.println("No. of kids: " + destList.size());
boolean val = false;
for (PDNameTreeNode dest2 : destList) {
System.out.println("in for");
Map<?, ?> destList2 = dest2.getNames();
// System.out.println("getnames... " + dest2.getNames());
if (destList2 != null) {
System.out.println("we have some dests now...");
Collection<PDPageXYZDestination> values =
(Collection<PDPageXYZDestination>) destList2.values();
Collection<PDPageXYZDestination> c = values;
System.out.println(c.size());
for (PDPageXYZDestination destNode : c) {
System.out.println(destNode.toString());
System.out.println("tostring: " +
destNode.toString());
System.out.println("getleft: " +
destNode.getLeft());
System.out.println("getpagenumber" +
destNode.getPageNumber());
System.out.println("gettop: " + destNode.getTop());
System.out.println("getzoom: " +
destNode.getZoom());
System.out.println("getpagenumber: " +
destNode.getPage());
System.out.println("getcosarray: " +
destNode.getCOSArray());
System.out.println("find page number: " +
destNode.findPageNumber());
System.out.println("getcosobject: " +
destNode.getCOSObject());
System.out.println("********************************************");
destNode.setZoom(-1);
val = true;
}
System.out.println("next in for...");
} else {
System.out.println("no names!");
}
}
System.out.println("returning ... " + val);
return val;
} else {
System.out.println("returning false...");
return false;
}
}
On Fri, Jun 18, 2010 at 12:09 PM, <[email protected]> wrote:
> Hesham,
> A named destination is a specific type of node in the document
> outline (aka a specific type of bookmark). A "normal" bookmark will point
> to a page (via the page's object ID and revision) while a named
> destination will point to some name. Then that needs to be resolved
> (somehow?) to the specific object that it points to. The object could be
> a page, an image, a paragraph, word, or anything else you'll find in a
> PDF. The main difference is that you can jump to specific point in a page
> (e.g. page 3 halfway down where a specific paragraph begins) instead of
> just pointing to the page. I've never needed this level of precision and
> references to pages are simpler and more common (and slightly more
> efficient since it points directly to a page instead of pointing to a
> pointer to an object), so I have not yet used named destinations. I hope
> this helps explain the differences and why one would be chosen over the
> other.
>
> Kevin,
> I too am interested in how you did this, as I expect I'll have to cross
> this bridge at some point.
>
> ----
> Thanks,
> Adam
>
>
>
>
>
> From:
> "Hesham G." <[email protected]>
> To:
> <[email protected]>
> Date:
> 06/17/2010 20:14
> Subject:
> Re: getting page numbers of named destinations
>
>
>
> Kevin ,
>
> I have been watching this post out, and I don't seem to understand yet
> what is the difference between "Named destinations" and "bookmarks" ?
> And I hope if you could share your code with us for how you have got it.
>
>
> Best regards ,
> Hesham
>
>
> ---------------------------------------------
> Included message :
>
> > Thank you SO MUCH, Adam. With your advice, and some tinkering with
> PDFBox, I
> > was able to get at and manipulate the named destinations.
> >
> > On Tue, Jun 1, 2010 at 3:23 PM, <[email protected]> wrote:
> >
> >> Kevin,
> >>
> >> Section 7.7.2 of the PDF Spec (I'm referencing version 1.7) goes over
> the
> >> Document catalog and table 20 points you to section 12.3.2.3 for "Named
> >> Destinations"). Section 12.3.2.3 explains that "the correspondence
> >> between name objects and destinations shall be defined by the Dests
> entry
> >> in the document catalogue (see 7.7.2, "Document Catalog")." So, per
> the
> >> spec, the answer lies in the document catalog.
> >>
> >> Table 28 defines what entries are allowed in the catalog dictionary.
> The
> >> "Document Outline" (i.e. key: "Outlines"), which are also known as
> >> bookmarks, are what you are looping through in your code. So that's
> why
> >> you're getting bookmarks and not named destinations. You don't want
> >> document.getDocumentCatalog().getDocumentOutline() but you do want
> >> document.getDocumentCatalog().
> >>
> >> Like I said before, I haven't actually dealt with named destinations,
> nor
> >> have I even seen a document which uses them, so I don't know how the
> >> "Dests" key works. However, it should be pretty easy to figure if you
> >> take a look at a PDF in vi, Notepad++, or any other quality editor.
> Once
> >> you know what you're looking for, it's just a matter of looking at
> things
> >> in PDDocumentCatalog to find it.
> >>
> >> ----
> >> Thanks,
> >> Adam
> >>
> >>
> >>
> >>
> >>
> >> From:
> >> Kevin Brown <[email protected]>
> >> To:
> >> [email protected]
> >> Date:
> >> 05/25/2010 11:11
> >> Subject:
> >> Re: getting page numbers of named destinations
> >>
> >>
> >>
> >> Thanks much! I'm trying this but it seems to pull in bookmarks, not
> named
> >> destinations. Am I missing something?
> >>
> >>
> >> On Sat, May 22, 2010 at 11:15 AM, Andreas Lehmkuehler
> >> <[email protected]>wrote:
> >>
> >> > Hi
> >> >
> >> > Kevin Brown schrieb:
> >> >
> >> > I can't seem to get this done with pdfbox. There doesn't seem to be
> a
> >> way
> >> >> to
> >> >> get the page number from the context of the named destination. Am I
> >> wrong?
> >> >> Anyone got any sample code for working with named destinations?
> >> >>
> >> > If you have a look at the mentioned example you find some code like
> >> this:
> >> >
> >> > PDDocumentOutline
> >> > bookmarks=document.getDocumentCatalog().getDocumentOutline();
> >> > PDOutlineItem item = bookmarks.getFirstChild().getNextSibling();
> >> >
> >> > And the PDOutlineItem class provides a method to get the
> corresponding
> >> > page:
> >> >
> >> > /**
> >> > * This method will attempt to find the page in this PDF document
> that
> >> this
> >> > outline points to.
> >> > * If the outline does not point to anything then this method will
> >> return
> >> > null. If the outline
> >> > * is an action that is not a GoTo action then this methods will
> throw
> >> the
> >> > OutlineNotLocationException
> >> > *
> >> > * @param doc The document to get the page from.
> >> > *
> >> > * @return The page that this outline will go to when activated or
> null
> >> if
> >> > it does not point to anything.
> >> > * @throws IOException If there is an error when trying to find the
> >> page.
> >> > */
> >> > public PDPage findDestinationPage( PDDocument doc ) throws
> IOException
> >> >
> >> > I didn't test it, but theoretically it looks like the piece of code
> you
> >> are
> >> > looking for.
> >> >
> >> > BR
> >> > Andreas Lehmkühler
> >> >
> >> >
> >> >
> >> >> On Wed, May 19, 2010 at 12:45 PM, Kevin Brown <[email protected]>
> wrote:
> >> >>
> >> >> Thanks. I do need to do that!
> >> >>>
> >> >>> At the moment I'm trying to see if I can get the
> >> >>> GotoSecondBookmarkOnOpen.java sample has any clues... if
> PDOutlineItem
> >> >>> could refer to a named destination then I may be in business!
> >> >>>
> >> >>>
> >> >>>
> >> >>> On Wed, May 19, 2010 at 11:57 AM, <[email protected]> wrote:
> >> >>>
> >> >>> I haven't dealt with named destinations, but if you get get the
> >> object
> >> >>>> ID
> >> >>>> of the page, you can look up the page number with
> doc.getPageMap().
> >> If
> >> >>>> you haven't already, I'd suggest tracing through a PDF with a hex
> >> editor
> >> >>>> (or any good quality text editor will work fine) to find out how
> >> >>>> everything is connected.
> >> >>>>
> >> >>>> ----
> >> >>>> Thanks,
> >> >>>> Adam
> >> >>>>
> >> >>>>
> >> >>>>
> >> >>>>
> >> >>>>
> >> >>>> From:
> >> >>>> Kevin Brown <[email protected]>
> >> >>>> To:
> >> >>>> [email protected]
> >> >>>> Date:
> >> >>>> 05/19/2010 08:42
> >> >>>> Subject:
> >> >>>> getting page numbers of named destinations
> >> >>>>
> >> >>>>
> >> >>>>
> >> >>>> Is it possible to, for a PDF, get the named destinations in it,
> and
> >> find
> >> >>>> out
> >> >>>> what page each is on? It doesn't look like it from my perusal of
> the
> >> >>>> documentation, but I'm not sure. Seems like you can get the
> >> destination
> >> >>>> names but that's about it.
> >> >>>>
> >> >>>>
> >> >>>>
> >> >>>> ? Click here to submit conditions
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> >>
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> >> Mortgage Company, Inc. is confidential and/or legally privileged. The
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>
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> This email and any content within or attached hereto from Sun West
> Mortgage Company, Inc. is confidential and/or legally privileged. The
> information is intended only for the use of the individual or entity named
> on this email. If you are not the intended recipient, you are hereby
> notified that any disclosure, copying, distribution or the taking of any
> action in reliance on the contents of this email information is strictly
> prohibited, and that the documents should be returned to this office
> immediately by email. Receipt by anyone other than the intended recipient is
> not a waiver of any privilege. Please do not include your social security
> number, account number, or any other personal or financial information in
> the content of the email. Should you have any questions, please call (800)
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