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Topic: Mask step followed by Annotation step
Conf: (P-PDF) Developers, Msg: 125752
Date: 1/18/2005 09:34 PM
I need to manage 2 steps in the life of documents PDF :
1) A masking step: users insert masks in the PDF.
2) A annotation step : users insert annotations in the PDF, but can't modify the mask objects.
With this context, I have to operate a certain process between step 1 and step 2, which "burns" mask objects (rectangle, etc.).
I can't work with PDF security, because users of step 1 and step 2 are the same !
My questions are :
1) Is there a way to really burn an object into another one (eg: an image into another one) ?
2) What tool can I use to handle existing objects (like annotations created by users), in order to transform them to a final object (what kind ?) which should be burned (or "unhandlable") ? Does PDFLib provides such functionnalities ?
3) The initial format of documents are TIFF, then : Do I need to come back on the TIFF version of documents, in order to burn annotations at this level, and to reconvert documents to be sure the masks won't be "handlable" at the PDF level ? Does a PDF2TIFF exist, does a single tool provides all my needed functionnalities ?
4) In a general way, it seems it's simple to add objects in a PDF by API, but I don't know if I can loop on existing objects (for example to get the outputstream of an image, or to detect a rectangle annotation...).
Thanks to help me.