Martin Doucha created FOP-2438:
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Summary: Non-breaking space causes alignment problems with
text-align-last="justify"
Key: FOP-2438
URL: https://issues.apache.org/jira/browse/FOP-2438
Project: Fop
Issue Type: Bug
Affects Versions: 1.1, trunk
Reporter: Martin Doucha
Non-breaking spaces are not included in stretch factor calculation under
special circumstances but they are stretched by the resulting (oversized)
stretch factor, leading to text overflowing out of block. Those special
circumstances are:
- text-align-last="justify"
- text-align="start" (or anything else other than justify)
- the non-breaking space has to get positioned on the last line of the block
Here's Knuth sequence for block "Test Test Test" with the above alignment
settings:
<KnuthSequence [box w=17220, glue w=2500 stretch=1250 shrink=0, box w=17220,
aux. box w=2500, box w=17220, penalty p=-INFINITE w=0 (forced break, ??? (-1))]>
Notice that the second space is represented as box instead of glue with penalty.
Here's Knuth sequence for the same block but this time with alignment
justify/justify:
<KnuthSequence [box w=17220, glue w=2500 stretch=1250 shrink=833, box w=17220,
aux. box w=0, aux. penalty p=INFINITE w=0, glue w=2500 stretch=1250 shrink=833,
box w=17220, penalty p=-INFINITE w=0 (forced break, ??? (-1))]>
This gets rendered correctly.
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