[jira] [Commented] (FOP-2222) Incorrect page break in cell

["Nico (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FOP-2222?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13646581#comment-13646581 ] 

Nico commented on FOP-2222:
---------------------------

Thanks Luis for the link. However, the problem is different (BalancingColumnBreakingAlgorithm is not involved).

My test case is just a table with 2 cells. Fop can't set up the right page breaks on this simple example. 
You are right, getCombinedKnuthElementsForRowGroup seems to be the problem, but I can't figure out how it works (what are the purpose of the box and penalties ?). The element list it sends to PageBreakingAlgorithm::computeDifference is only ok for the first page : it simply need to be recomputed on each page break. Does the fop code structure allow this ?

                
> Incorrect page break in cell
> ----------------------------
>
>                 Key: FOP-2222
>                 URL: https://issues.apache.org/jira/browse/FOP-2222
>             Project: Fop
>          Issue Type: Bug
>          Components: page-master/layout
>    Affects Versions: 1.1, trunk
>            Reporter: Nico
>         Attachments: test-two-cells.fo, test-two-cells.pdf
>
>
> In a table with one row and two cells, spanning across multiple pages, the pages break are not what should be expected. (I don't know if it's by design or a bug).
> Please see the attached .fo and .pdf.
> Test case : the first cell has blocks with 120mm height. The second cell has blocks with 100mm heights. The page height is 266mm
> First page : each cell contains his two blocks on the page
> second page : after the first page break, the fist cell show only the one block where two is expected. The second block, which is on page 3, should fit on page 2.
> Is it standard behaviour ? Thanks.

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