Enrique Palomo Jiménez wrote: > Hi all, > > I want to take an existing pdf and add it a non-opaque watermark. > I have tried it in postscript but postscript hava an opaque imaging model. > Pdf allows it. I can do it with acrobat 6.0, but i need to add the watermark > in batch mode or inside an application. > > I've found lowagie library for java. > > Anyone knows if there is something similar for python?? > > must i begin to learn java?? > > Regards
For what it's worth, if you use PostScript correctly there will be no need to migrate to PDF (though it can have advantages). PostScript doesn't "have an opaque imaging model" at all. You can define arbitrary paths, and draw on top of existing graphics. Problems may occur if you want your watermark to appear "behind" your main content if the main content draws with an opaque background (because that would obscure the watermark and render it invisible), but that's nothing to do with PostScript per se, so you might be trying to walk a hundred miles when a trip round the corner would do. The ReportLab functionality (PageCatcher) to read existing PDFs and incorporate them as a part of other PDF documents is not, unfortunately, a part of the open source toolkit. regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC www.holdenweb.com PyCon TX 2006 www.python.org/pycon/ -- http://mail.python.org/mailman/listinfo/python-list