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Posted to fop-dev@xmlgraphics.apache.org by "chunlinyao (JIRA)" <ji...@apache.org> on 2017/07/10 23:38:00 UTC
[jira] [Created] (FOP-2722) Use letter-spacing.maximum and
alignment justification with CJK contents throw Exception
chunlinyao created FOP-2722:
-------------------------------
Summary: 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
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:
int unsuppressibleLetterSpaces = (suppressibleLetterSpace && mapping.letterSpaceCount > 0)
? mapping.letterSpaceCount - 1
: mapping.letterSpaceCount;
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