Hi mithunk, After generating the area tree you know exactly on which page the signature block is. If you get two pages with a block having your signature id, the signature block is obviously split. In that case, the second block has to start at (0/0).
If you add bpda of ALL previous blocks, of course you get a wrong value, if one block contains another block. If I were you, I'd build a test file with a few blocks with exactly known heights. Then when adding, I would compare the results with the actual positions. From here I can't tell you why you get wrong results. Regards, Georg Datterl ------ Kontakt ------ Georg Datterl Geneon media solutions gmbh Gutenstetter Straße 8a 90449 Nürnberg HRB Nürnberg: 17193 Geschäftsführer: Yong-Harry Steiert Tel.: 0911/36 78 88 - 26 Fax: 0911/36 78 88 - 20 www.geneon.de Weitere Mitglieder der Willmy MediaGroup: IRS Integrated Realization Services GmbH: www.irs-nbg.de Willmy PrintMedia GmbH: www.willmy.de Willmy Consult & Content GmbH: www.willmycc.de -----Ursprüngliche Nachricht----- Von: mithunk [mailto:mithunakulka...@yahoo.com] Gesendet: Mittwoch, 6. Oktober 2010 23:16 An: fop-users@xmlgraphics.apache.org Betreff: Re: AW: AW: AW: Identifying absolute position of a FO:Block Hi Georg, I have PDF with 2 pages, in that case. How do I calculate the position? I should add blocks of second page only right? As the data in my case is dynamic I wont know whether the signature block will be in first page or second page. Right now if I add bpda of all the previous blocks, I am getting wrong position information. Thanks, MK Georg Datterl wrote: > > Hi mithunk, > > Two things I can think of given your description: > The measurements are in milipoints. Divide by 1000 when finished to get > points. > Only add relevant blocks. Given a structure like > > <block A> > <block B /> > <block C /> > </block A> > <block D> > <block E /> > <block F /> > </block D> > > to get the position of block F you add the height of blocks E and A. > Basically: previous siblings of targetnode and all of its parent nodes are > interesting. > > Regards, > > Georg Datterl > > ------ Kontakt ------ > > Georg Datterl > > Geneon media solutions gmbh > Gutenstetter Straße 8a > 90449 Nürnberg > > HRB Nürnberg: 17193 > Geschäftsführer: Yong-Harry Steiert > > Tel.: 0911/36 78 88 - 26 > Fax: 0911/36 78 88 - 20 > > www.geneon.de > > Weitere Mitglieder der Willmy MediaGroup: > > IRS Integrated Realization Services GmbH: www.irs-nbg.de > Willmy PrintMedia GmbH: www.willmy.de > Willmy Consult & Content GmbH: www.willmycc.de > > -----Ursprüngliche Nachricht----- > Von: mithunk [mailto:mithunakulka...@yahoo.com] > Gesendet: Dienstag, 5. Oktober 2010 22:14 > An: fop-users@xmlgraphics.apache.org > Betreff: Re: AW: AW: Identifying absolute position of a FO:Block > > > Hi, > > I tried creating AreaTree for my XSL-FO. And as you suggested added bpda > of > all the block elements in the area tree (untill my block is hit). But the > y > position that I get after adding all these is wrong. I want to calculate > the > absolute position of this block (x and y coordinates). Please help, as I > need to finish this POC in another day. > Please also mention if it not possible in FOP. > > Thanks, > Mithun > > > Georg Datterl wrote: >> >> Hi, >> >> First: I had a look at IF, but AT is better suited for the task, IMHO. >> >> Now for some details: >> >> Here's a simple fo file with a named block: >> >> <?xml version="1.0" encoding="UTF-8"?> >> <fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format";> >> <fo:layout-master-set> >> <fo:simple-page-master master-name="x"> >> <fo:region-body/> >> </fo:simple-page-master> >> </fo:layout-master-set> >> <fo:page-sequence master-reference="x"> >> <fo:flow flow-name="xsl-region-body"> >> <fo:block> >> <fo:block id="block-to-find"> >> <fo:inline>testtext </fo:inline> >> </fo:block> >> </fo:block> >> </fo:flow> >> </fo:page-sequence> >> </fo:root> >> >> Here's the area tree for this fo (fop test.fo -at test.xml): >> >> <?xml version="1.0" encoding="UTF-8"?> >> <!--Produced by Apache FOP Version svn-trunk--> >> <areaTree> >> <pageSequence> >> <pageViewport bounds="0 0 594720 792000" key="P1" nr="1" >> formatted-nr="1" simple-page-master-name="x"> >> <page> >> <regionViewport ipd="594720" bpd="792000" >> ipda="594720" bpda="792000" bap="0 0 0 0" is-viewport-area="true" rect="0 >> 0 594720 792000"> >> <regionBody ipd="594720" >> bpd="792000" ipda="594720" bpda="792000" bap="0 0 0 0" >> is-reference-area="true" name="xsl-region-body" ctm="[1.0 0.0 0.0 1.0 0.0 >> 0.0]"> >> <beforeFloat/> >> <mainReference ipd="0" >> bpd="0" bap="0 0 0 0" is-reference-area="true"> >> >> <flow >> ipd="594720" bpd="14400" ipda="594720" bpda="14400" bap="0 0 0 0" >> is-reference-area="true"> >> >> <block ipd="594720" bpd="14400" ipda="594720" bpda="14400" bap="0 0 0 0"> >> >> <block ipd="594720" bpd="14400" ipda="594720" bpda="14400" bap="0 0 0 0" >> prod-id="block-to-find"> >> >> <lineArea ipd="594720" bpd="11100" ipda="594720" bpda="14400" bap="0 0 0 >> 0" space-before="1650" space-after="1650"> >> >> <inlineparent ipd="38688" bpd="11100" ipda="38688" bpda="11100" bap="0 0 >> 0 >> 0" offset="0"> >> >> <text offset="0" baseline="8616" ipd="38688" bpd="11100" ipda="38688" >> bpda="11100" bap="0 0 0 0" font-name="sans-serif" font-style="normal" >> font-weight="400" font-size="12000" color="#000000"> >> >> <word offset="0">testtext</word> >> >> </text> >> >> </inlineparent> >> >> </lineArea> >> >> </block> >> >> </block> >> </flow> >> >> </mainReference> >> <footnote >> top-offset="0"/> >> </regionBody> >> </regionViewport> >> </page> >> </pageViewport> >> </pageSequence> >> </areaTree> >> >> Now look for the block element with attribute prod-id="block-to-find". >> That's your target block. As Craig said, if the block spans more pages, >> there may be more than one block with this attribute. >> >> Now you can get the width of the block (attribute ipd) and the height >> (attribute bpd). Use ipda and bpda if you need the padding, too. Also see >> http://wiki.apache.org/xmlgraphics-fop/AreaTreeXMLDocumentation or search >> this mailing list for "area tree". >> For the block's position in the page, add the height of all previous >> blocks in the page. >> >> Regards, >> >> Georg Datterl >> >> ------ Kontakt ------ >> >> Georg Datterl >> >> Geneon media solutions gmbh >> Gutenstetter Straße 8a >> 90449 Nürnberg >> >> HRB Nürnberg: 17193 >> Geschäftsführer: Yong-Harry Steiert >> >> Tel.: 0911/36 78 88 - 26 >> Fax: 0911/36 78 88 - 20 >> >> www.geneon.de >> >> Weitere Mitglieder der Willmy MediaGroup: >> >> IRS Integrated Realization Services GmbH: www.irs-nbg.de >> Willmy PrintMedia GmbH: www.willmy.de >> Willmy Consult & Content GmbH: www.willmycc.de >> >> >> -----Ursprüngliche Nachricht----- >> Von: Craig Ringer [mailto:cr...@postnewspapers.com.au] >> Gesendet: Dienstag, 5. Oktober 2010 02:35 >> An: fop-users@xmlgraphics.apache.org >> Cc: mithunk >> Betreff: Re: AW: Identifying absolute position of a FO:Block >> >> On 4/10/2010 11:28 PM, mithunk wrote: >>> >>> Thanks Georg, >>> >>> I am new to FOP. Can you please help me with how to calculate the >>> position >>> by giving a block id. >>> I modified my XSL with a block id (for a field), now dont know how to >>> calculate the position. >> >> METHOD 1: >> >> Use fop to produce the intermediate "area tree" output from your XSL-FO. >> See the documentation for details on that. >> >> Once you have the area tree, use xpath to find the block. IIRC the id >> will be in the 'prod-id' attribute of the block(s) generated. If it's >> broken across a page, column, etc there may be more than one element >> generated. >> >> Once you've found the element(s) you should be able to work out the >> position from the positioning attributes them and their parent elements. >> >> It's possible that the new intermediate format ("IF") is better than the >> area tree for this, but I haven't worked with it much so all I can >> suggest is generating it, looking at it, and seeing if it's useful. I >> have the feeling the new IF doesn't include element IDs, but I may be >> misremembering. >> >> -- >> Craig Ringer >> >> Tech-related writing at http://soapyfrogs.blogspot.com/ >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: fop-users-unsubscr...@xmlgraphics.apache.org >> For additional commands, e-mail: fop-users-h...@xmlgraphics.apache.org >> >> >> > > -- > View this message in context: > http://old.nabble.com/Identifying-absolute-position-of-a-FO%3ABlock-tp29858679p29890837.html > Sent from the FOP - Users mailing list archive at Nabble.com. > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: fop-users-unsubscr...@xmlgraphics.apache.org > For additional commands, e-mail: fop-users-h...@xmlgraphics.apache.org > > > -- View this message in context: http://old.nabble.com/Identifying-absolute-position-of-a-FO%3ABlock-tp29858679p29900934.html Sent from the FOP - Users mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: fop-users-unsubscr...@xmlgraphics.apache.org For additional commands, e-mail: fop-users-h...@xmlgraphics.apache.org
