Ellen - what you write isn't true for Adobe Acrobat/Reader (can't
comment on others).
The preview you see in the Acrobat/Reader print dialog is ALSO based
on the CropBox, as per the PDF Reference.
Leonard
On Apr 22, 2008, at 10:15 AM, Ning Zhao wrote:
> Hi Sapien,
>
> recently I fought against a similar problem during my work and got it
> straight. Some facts to notice:
>
> 1. The mainstream pdf readers only render the cropbox area on screen.
> Only when you hit the "print" button can you view your document in the
> mediabox, in your "print preview" screen. This could cause confusion
> when the cropbox is really smaller than the mediabox. So, make sure
> you
> get the coordinates of corners of your cropbox and mediabox and be
> clear
> where your watermark should appear. Relative to mediabox or cropbox?
> Sometimes you may really place your watermark right but only cannot
> see
> it on screen. They can be seen when you print your doc off.
>
> 2. There are methods likes top(), bottom(), left(), right() you can
> apply to a PdfRectangle object in the iText API to get the coordinates
> of your cropbox and mediabox.
>
> Hope that helps.
>
>
> Best Regards,
> Ellen N. Zhao
>
> Sapien schrieb:
>> Thanks for the tip Paulo, this appears to be what I need, and I've
>> done some
>> investigating into both mediabox and cropbox. I've tried
>> implementing some
>> examples in my code, but can't seem to get it right. Has anyone
>> successfully used mediabox and cropbox in Coldfusion within a
>> cfscript tag?
>> Many thanks.
>>
>>
>> Paulo Soares wrote:
>>
>>> You need to take into account the mediabox and the cropbox to
>>> place the
>>> text, placing it always at the same height won't work.
>>>
>>> Paulo
>>>
>>> ----- Original Message -----
>>> From: "Sapien" <[EMAIL PROTECTED]>
>>> To: <itext-questions@lists.sourceforge.net>
>>> Sent: Thursday, April 10, 2008 6:02 PM
>>> Subject: [iText-questions] iText Watermark position issue
>>>
>>>
>>>
>>>> Coders,
>>>>
>>>> Please forgive me in advance as my java kung foo is not that
>>>> strong. I
>>>> have
>>>> a site which allows users to merge multiple pdf documents they
>>>> choose via
>>>> a
>>>> checklist, and then it will apply a small watermark to the top left
>>>> (xposition 158, yposition 743). The problem is that there are
>>>> some pdfs
>>>> in
>>>> which the watermark gets set in the middle of the page instead
>>>> of the top
>>>> left. I believe I have read in some forums where it may be a
>>>> size issue
>>>> of
>>>> sorts, but I'm still confused. I do know that I have found a
>>>> weird work
>>>> around, which involves saving the pdf documents that don't work
>>>> right,
>>>> then
>>>> rescanning via copy machine and having my copy machine send it
>>>> back to me
>>>> via email. It will then apply the watermark to the upper left
>>>> corner. I
>>>> will attach my code below (note: code is written in coldfusion
>>>> and java):
>>>>
>>>>
>>>> <!--- BEGIN WATERMARK SCRIPT --->
>>>>
>>>> <cfscript>
>>>>
>>>> paths = arrayNew(1);
>>>>
>>>> /*
>>>> This points to the jar we want to load.
>>>> Could also load a directory of .class files
>>>> */
>>>> paths[1] = expandPath("iText.jar");
>>>>
>>>> //create the loader
>>>> loader2 = createObject("component", "javaloader.JavaLoader").init
>>>> (paths);
>>>>
>>>> function insertWatermarkPDF(pdfFileIn, imageFile, pdfFileOut,
>>>> xPos, yPos,
>>>> zIndex)
>>>> {
>>>> // zindex refers to placing the image over or under the content,
>>>> default
>>>> is
>>>> under
>>>> // but if your content has a background, it may obscure the
>>>> watermark
>>>> if (NOT structKeyExists(arguments, "zIndex"))
>>>> arguments.zIndex = 0;
>>>>
>>>> //try
>>>> //{
>>>> document = loader2.create("com.lowagie.text.Document");
>>>> document.init();
>>>>
>>>> pdfReader = loader2.create("com.lowagie.text.pdf.PdfReader");
>>>> pdfReader.init(arguments.pdfFileIn);
>>>>
>>>> // page countING
>>>> n = pdfReader.getNumberOfPages();
>>>>
>>>> // creae an outputstream
>>>> streamOut = loader2.create("java.io.FileOutputStream");
>>>> streamOut.init(arguments.pdfFileOut);
>>>>
>>>> // give it to the pdfstamper
>>>> pdfStamper = loader2.create("com.lowagie.text.pdf.PdfStamper");
>>>> pdfStamper.init(pdfReader, streamOut);
>>>>
>>>> // contentbyte is a static object, no constructor
>>>> under = loader2.create("com.lowagie.text.pdf.PdfContentByte");
>>>>
>>>> // create the Image handler, static object, no constructor
>>>> Image = loader2.create("com.lowagie.text.Image");
>>>>
>>>> // now create an instance with this file (report_watermark.jpg)
>>>> img = Image.getInstance(JavaCast("string", arguments.imageFile));
>>>> img.setAbsolutePosition(arguments.xPos, arguments.yPos);
>>>>
>>>> for (ii = 1; ii LT n; ii = ii + 1)
>>>> {
>>>> // pdfStamper supports getUnderContent() and getOverContent()
>>>> if (arguments.zIndex)
>>>> under = pdfStamper.getOverContent(JavaCast("int", ii));
>>>> else
>>>> under = pdfStamper.getUnderContent(JavaCast("int", ii));
>>>>
>>>> under.addImage(img);
>>>> }
>>>>
>>>> pdfStamper.close();
>>>>
>>>> return true;
>>>> //}
>>>> //catch (any e)
>>>> //{
>>>> // return false;
>>>> //}
>>>> }
>>>>
>>>> </cfscript>
>>>>
>>>> <cfoutput>#insertWatermarkPDF("<PATH REMOVED>\concatenation.pdf"
>>>> ,"<PATH REMOVED>\n#form.tail#up.gif"
>>>> ,"<PATH REMOVED>\concatenation2.pdf"
>>>> ,158
>>>> ,743
>>>> ,1)#
>>>> </cfoutput>
>>>>
>>>> I hope this isn't confusing. Thanks in advance for everyone's
>>>> assistance.
>>>>
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>>
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