thanks for response i will what you said.
________________________________
From: iText Info <[email protected]>
To: [email protected]
Sent: Monday, 6 August 2012 11:49 AM
Subject: Re: [iText-questions] insert images in multiple pages
Op 5/08/2012 23:21, agha ali schreef:
> if i insert the image in pdf in foreach loop as you previously stated
> that it will duplicate and it is not a good solution .
Correct, and by creating the Image objects up-front, you can avoid that
problem.
> but the images may be all distinct or some common ,
And that's not a problem.
> i can find the list of distinct imageName,
OK, but please be aware that the images lose their name when you add
them to a PDF.
The image stream is added as 1 or more objects to the PDF file.
They also get a name such as /Img0 when referred to from a page, but
that name is unique per page, NOT unique in the document. An Image
XObject named /Img0 in page 1 may be totally different from an Image
XObject with the same name in page 2.
> so what i want is insert the image data in pdf as a resource
Er... Bad idea! Bad idea! Bad Idea! This way you could add images to a
PDF document that are never used. For instance: you add 20 images
because you THINK they are needed, but eventually you may only use 16 of
them, resulting in at least 4 objects with possibly large byte streams
that are unnecessary.
> and use that resource and insert the the specific image (with
> loaction and size) in foreach loop.
That's EXACTLY what iText does. The moment you add an Image for the
first time to a PDF, an id is created internally. Whenever you use the
same Image XObject again, the id is reused.
If you really insist to implement your design (which is IMHO flawed),
you can do so by using the code in section 16.1.1 (page 527) of "iText
in Action - Second Edition" (that's in the advanced chapters hardly
anybody reads).
In that example, a low-level PdfImage object is created (that's an image
dictionary), and it's added straight to the writer before the high-level
Image object is added to the Document. When the low-level object is
added to the writer, it gets a reference that is unknown to the
high-level object, so don't forget to set that reference!
The four lines in Listing 16.1 from chapter 16, are invoked
automatically for you if you use iText correctly, so there's really no
need for you to implement your idea.
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------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and
threat landscape has changed and how IT managers can respond. Discussions
will include endpoint security, mobile security and the latest in malware
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
_______________________________________________
iText-questions mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/itext-questions
iText(R) is a registered trademark of 1T3XT BVBA.
Many questions posted to this list can (and will) be answered with a reference
to the iText book: http://www.itextpdf.com/book/
Please check the keywords list before you ask for examples:
http://itextpdf.com/themes/keywords.php
