-none- 2007-10-03 - By John Zeitler
Back
Right, I'm a complete and total idiot. I figured out the problem... my
margins were set to 0! The header and footer were printing to the document,
all right, but were rendering OUTSIDE of the page's bounds. Therefore it
looked like nothing was happening. Sorry to waste your time.
Incidentally, is this information made clearer in the book rather than the
tutorials? The API documentation at http://itext.ugent.be/library/api/ is
sketchy at best and misleading at worst (it still has the HeaderFooter
functionality as non-deprecated, which has been decried as 'old' here).
John Zeitler wrote:
>
> As I'd said, it's a direct copy/paste from the linked tutorial. I'll
> reproduce it here anyway:
>
> /**
> * @(protected)
> com.lowagie.text.pdf.PdfPageEventHelper#onEndPage(com.lowagie.text.pdf
.PdfWriter,
> com.lowagie.text.Document)
> */
> public void onEndPage(PdfWriter writer, Document document) {
> try {
> Rectangle page = document.getPageSize();
> PdfPTable head = new PdfPTable(3);
> for (int k = 1; k <= 6; ++k)
> head.addCell("head " + k);
> head.setTotalWidth(page.getWidth() - document.leftMargin() -
> document.rightMargin());
> head.writeSelectedRows(0, -1, document.leftMargin(),
> page.getHeight() - document.topMargin() + head.getTotalHeight(),
> writer.getDirectContent());
> PdfPTable foot = new PdfPTable(3);
> for (int k = 1; k <= 6; ++k)
> foot.addCell("foot " + k);
> foot.setTotalWidth(page.getWidth() - document.leftMargin() -
> document.rightMargin());
> foot.writeSelectedRows(0, -1, document.leftMargin(),
> document.bottomMargin(),
> writer.getDirectContent());
> }
> catch (Exception e) {
> throw new ExceptionConverter(e);
> }
> }
>
>
> Paulo Soares wrote:
>>
>> Where's the onEndPage method code?
>>
>> Paulo
>>
>> -- -- Original Message -- --
>> From: "John Zeitler" <john.s.zeitler@(protected)>
>> To: <itext-questions@(protected)>
>> Sent: Tuesday, October 02, 2007 7:33 PM
>> Subject: [iText-questions] Questions On Headers/Footers with PageEvents
>>
>>
>>>
>>> Hi,
>>>
>>> I've run into a bit of trouble with headers and footers. I started off
>>> using setHeader(HeaderFooter), then saw that that was apparently 'old
>>> functionality' and that I should be using page events. So, I created a
>>> bare-bones event class based explicitly on the example from EndPage.java
>>> in
>>> the iText tutorial (here:
>>> http://itextdocs.lowagie.com/tutorial/directcontent/pageevents/index.html
>>> ).
>>> I literally just copied the onEndPage method from that one and put it
>>> into
>>> my new class; it's the only method in the class. My problem is that the
>>> event is being called and handled by the class, but no output is being
>>> written by that method (the rest of the output is OK). Here's what I'm
>>> doing (abstracting out unimportant stuff):
>>> Java code-ish:
>>> /* assuming OutputStream out is passed in to this, the document
>>> generator;
>>> * out is the OutputStream from the HttpServletResponse */
>>>
>>> Document document = new Document([page size], [margins all set to 0]);
>>> PdfWriter writer = PdfWriter.getInstance(document, out);
>>> writer.setPageEvent(new myPageEventHandler()); //this has the onEndPage
>>> from
>>> EndPage.java
>>> document.open();
>>>
>>> /* from here is contained in a bean which renders its data as a table;
>>> document is passed in */
>>>
>>> document.newPage();
>>>
>>> Phrase titleText = new Phrase("This is a bold title that is NOT to be a
>>> header");
>>> document.add(titleText);
>>>
>>> PdfPTable table = new PdfPTable(3);
>>> table.setTotalWidth([page size.width * a margin ratio]);
>>> table.setLockedWidth(true);
>>>
>>> PdfPCell cell = null;
>>> /* assume that this could be hundreds or thousands of rows long */
>>> for(int i = 0; i<9999; i++) {
>>> cell = new PdfPCell(new Phrase("celldata " + i));
>>> /* cell modifications, like border width, rowspan, etc. */
>>> table.addCell(cell);
>>> }
>>>
>>> document.add(table);
>>>
>>> /* now this is performed by the class which calls the bean's method
>>> (above)
>>> */
>>>
>>> if(document != null) document.close();
>>> if(out != null) out.close();
>>>
>>> //end Java code
>>>
>>> I suspect there's something going on with the mixing of the
>>> writeSelectedRows in the onEndPage method; if I replace that line with
>>> document.add(head) etc. I can write to the page, but the problem is that
>>> those don't show up on the first page, just the second page and
>>> thereafter.
>>> More to the point, just using document.add doesn't allow me to set the
>>> positioning of the headers and footers. As a final bit of information,
>>> I'm
>>> using iText 2.0.5 after upgrading from 1.1.4; I've quashed all other
>>> bugs,
>>> but this one is the last one (headers and footers didn't work for me in
>>> the
>>> old version either). This is driving me crazy and I'm looking for any
>>> help
>>> or advice that can be offered. Thanks!
>>>
>>> John Z.
>>
>>
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>
>
--
View this message in context: http://www.nabble.com/Questions-On-Headers
-Footers-with-PageEvents-tf4556782.html#a13018153
Sent from the iText - General mailing list archive at Nabble.com.
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