Right, is there not a way to obtain the transformation matrix for the image? On Feb 15, 2008, at 2:48 AM, 1T3XT info wrote:
> chris glace wrote: >> I'm trying to find the position of an xobject in an existing pdf >> file. >> I'm wondering if there is a way to use stream.get(PdfName. . . >> to return the location of the object. The code I'm using is as >> follows. > > I don't understand your code. > If you say you're looking for the 'position' of an XObject. > Do you mean you are looking for the byte offset in the file > (where to find an XObject in a PDF file), or do you mean you > are looking for the position of an image on a specific page > in a PDF document? > > I assume you mean the latter (because the former is simple). > > An XObject is a stream that can be reused in many different > other streams. For instance: you could have an image XObject > of a logo that appears on every page in the document. > Suppose that you have some pages in landscape and some in portrait. > Then the logo will have different coordinates on these different > pages. Therefore the position of the XObject IS NEVER STORED with > the XObject, the position can be found in the stream that refers > to the XObject. > Maybe your reaction is: "Oh right, then it's simple: I have to > look in the content stream of the pages using the XObject." > Yes and no. That's indeed where you should look, but it's not > simple. Because the actual position depends on the current > transformation matrix of the state at the moment the image is > added. It's quite some programming work to parse the content > stream and calculate the position of an XObject. iText doesn't > do this. > -- > This answer is provided by 1T3XT BVBA > > ---------------------------------------------------------------------- > --- > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2008. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > iText-questions mailing list > iText-questions@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/itext-questions > Buy the iText book: http://itext.ugent.be/itext-in-action/ ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ iText-questions mailing list iText-questions@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/itext-questions Buy the iText book: http://itext.ugent.be/itext-in-action/
