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From "Robert Meyer (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (FOP-2160) writing-mode="lr" causing null-pointer-exception
Date Wed, 19 Dec 2012 11:21:12 GMT

     [ https://issues.apache.org/jira/browse/FOP-2160?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Robert Meyer updated FOP-2160:
------------------------------

    Attachment: patch.diff

I had a quick look at this and found that the null pointer was happening because the adjustingInfo
variable was not set. I am surprised this issue has not come up before as having gone through
the debug process, it seems clear that this value may or may not be set. The AbstractTextArea.applyVariationFactor
handles null whereas the same method in FilledArea does not. The reason why the null pointer
is not occuring when you omit any of the three things you mentioned is because the applyVariations
is not called which bypasses the issue. The patch simply allows the FilledArea class method
to handle the null value.
                
> writing-mode="lr" causing null-pointer-exception
> ------------------------------------------------
>
>                 Key: FOP-2160
>                 URL: https://issues.apache.org/jira/browse/FOP-2160
>             Project: Fop
>          Issue Type: Bug
>          Components: page-master/layout
>    Affects Versions: 1.1
>         Environment: Operating System: All
> Platform: All
>            Reporter: james quest
>         Attachments: patch.diff, stack
>
>
> i have seen that this fo causes a null-pointer-exception at fop1.1rc1.
> the same fo is perfectly fine if writing-mode="lr" or not specified
> <fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format" font-family="Arial" writing-mode="rl">
>   <fo:layout-master-set>
>     <fo:simple-page-master page-height="297mm" page-width="210mm" master-name="a4">
>       <fo:region-body margin-top="11mm" margin-bottom="12mm" margin-right="10mm" margin-left="10mm"/>
>     </fo:simple-page-master>
>   </fo:layout-master-set>
>   <fo:page-sequence master-reference="a4">
>     <fo:flow flow-name="xsl-region-body">
>       <fo:block id="1">وكلما</fo:block>
>       <fo:block text-align-last="justify">More text <fo:leader leader-pattern="dots"/>
<fo:page-number-citation ref-id="1"/>
>       </fo:block>
>     </fo:flow>
>   </fo:page-sequence>
> </fo:root>
> attached is the stack trace. 
> if you remove *any* of these 3 things, then there is no issue either 
> 1. <fo:leader>
> 2. <fo:page-number-citation>
> 3. text-align-last="justify"

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