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https://issues.apache.org/jira/browse/FOP-2722?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joao Goncalves reassigned FOP-2722:
-----------------------------------
Assignee: Joao Goncalves
> Use letter-spacing.maximum and alignment justification with CJK contents
> throw Exception
> -----------------------------------------------------------------------------------------
>
> Key: FOP-2722
> URL: https://issues.apache.org/jira/browse/FOP-2722
> Project: FOP
> Issue Type: Bug
> Components: layout/inline
> Affects Versions: 2.2
> Reporter: chunlinyao
> Assignee: Joao Goncalves
> Priority: Major
>
> I am try to use letter-spacing.maximum to justification CJK contents.
> {code:xml}
> <fo:block text-align="justify">
> <fo:inline letter-spacing.optimum="0pt" letter-spacing.maximum="2pt">
> 生产年
> </fo:inline>
> </fo:block>
> {code}
> With CJK contents fop throw Exception
> {code:java}
> Caused by: java.lang.IllegalArgumentException: factor < 0; was: -1
> at org.apache.fop.traits.MinOptMax.mult(MinOptMax.java:253)
> ~[fop-2.2.jar:?]
> at
> org.apache.fop.layoutmgr.inline.TextLayoutManager.addElementsForAWordFragment(TextLayoutManager.java:1331)
> ~[fop-2.2.jar:?]
> at
> org.apache.fop.layoutmgr.inline.TextLayoutManager.processWord(TextLayoutManager.java:947)
> ~[fop-2.2.jar:?]
> at
> org.apache.fop.layoutmgr.inline.TextLayoutManager.getNextKnuthElements(TextLayoutManager.java:805)
> ~[fop-2.2.jar:?]
>
> {code}
> After some debug I found on TextLayoutManager.java:1325 it set factor to -1.
> <https://github.com/apache/fop/blob/ddeba2b442/fop-core/src/main/java/org/apache/fop/layoutmgr/inline/TextLayoutManager.java#L1325>
> {code:java}
> int unsuppressibleLetterSpaces = suppressibleLetterSpace
> ? mapping.letterSpaceCount - 1
> : mapping.letterSpaceCount;
> {code}
> Should we change it to:
> {code:java}
> int unsuppressibleLetterSpaces = (suppressibleLetterSpace &&
> mapping.letterSpaceCount > 0)
> ? mapping.letterSpaceCount - 1
> : mapping.letterSpaceCount;
> {code}
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