[gsl-issues] [Issue 111272] No hyphenation with Graph ite fonts

2010-06-07 Thread es
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http://www.openoffice.org/issues/show_bug.cgi?id=111272


User es changed the following:

What|Old value |New value

  Status|RESOLVED  |VERIFIED





--- Additional comments from e...@openoffice.org Mon Jun  7 13:11:46 + 
2010 ---
Verified in CWS graphite02

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[gsl-issues] [Issue 111272] No hyphenation with Graph ite fonts

2010-05-31 Thread sba
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http://www.openoffice.org/issues/show_bug.cgi?id=111272


User sba changed the following:

What|Old value |New value

 Assigned to|sba   |es





--- Additional comments from s...@openoffice.org Mon May 31 14:46:44 + 
2010 ---
SBA-ES: Please take over, thx.

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[gsl-issues] [Issue 111272] No hyphenation with Graph ite fonts

2010-05-19 Thread hdu
To comment on the following update, log in, then open the issue:
http://www.openoffice.org/issues/show_bug.cgi?id=111272


User hdu changed the following:

What|Old value |New value

 IssuesThisDependsOn|111054|111054,111277



This issue depends on issue 111277, which changed state:

What|Old value |New value

  Status|NEW   |RESOLVED

  Resolution|  |DUPLICATE

  Status|RESOLVED  |CLOSED





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[gsl-issues] [Issue 111272] No hyphenation with Graph ite fonts

2010-05-12 Thread hdu
To comment on the following update, log in, then open the issue:
http://www.openoffice.org/issues/show_bug.cgi?id=111272


User hdu changed the following:

What|Old value |New value

  CC|'kami,kstribley,timar'|'hdu,kami,kstribley,timar'

 Assigned to|hdu   |sba





--- Additional comments from h...@openoffice.org Wed May 12 13:47:46 + 
2010 ---
@sba: please verify in CWS graphite02

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[gsl-issues] [Issue 111272] No hyphenation with Graph ite fonts

2010-05-06 Thread hdu
To comment on the following update, log in, then open the issue:
http://www.openoffice.org/issues/show_bug.cgi?id=111272



This issue depends on issue 111054, which changed state:

What|Old value |New value

  Status|STARTED   |RESOLVED

  Resolution|  |FIXED





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[gsl-issues] [Issue 111272] No hyphenation with Graph ite fonts

2010-05-06 Thread hdu
To comment on the following update, log in, then open the issue:
http://www.openoffice.org/issues/show_bug.cgi?id=111272


User hdu changed the following:

What|Old value |New value

  Status|STARTED   |RESOLVED

  Resolution|  |FIXED

Target milestone|---   |OOo 3.3





--- Additional comments from h...@openoffice.org Thu May  6 11:53:01 + 
2010 ---
The line breaking problem is also fixed by Keith's second patch in issue 111054.

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[gsl-issues] [Issue 111272] No hyphenation with Graph ite fonts

2010-05-05 Thread kstribley
To comment on the following update, log in, then open the issue:
http://www.openoffice.org/issues/show_bug.cgi?id=111272





--- Additional comments from kstrib...@openoffice.org Wed May  5 07:49:33 
+ 2010 ---
 Until Graphite gets these reliable instructions about where Writer wants his 
 line 
 starts/ends Graphite must disable these special ligatures.

Yes, it is disabled already, see graphite_layout.cxx line 547.
maLayout.setStartOfLine(false);
maLayout.setEndOfLine(false);

  As regards scripts without OOo hyphenators, Myanmar script based languages
are one example.
  In Myanmar spaces are more common at phrase boundaries than word boundaries.

 This is good example of the where the OOo hyphenator can and should be
extended. AFAIK the 
 hyphenator in lingucomponent just needs its syllable list extended for it.

I think a word break iterator should be sufficient to identify words since there
are usually no spaces between them. It is on my to do list! Myanmar Unicode
keyboards are generally not using ZWSP between syllables (unlike Khmer) because
this makes it harder to implement a dictionary based word breaker.

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[gsl-issues] [Issue 111272] No hyphenation with Graph ite fonts

2010-05-04 Thread hdu
To comment on the following update, log in, then open the issue:
http://www.openoffice.org/issues/show_bug.cgi?id=111272


User hdu changed the following:

What|Old value |New value

 IssuesThisDependsOn|  |111054





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[gsl-issues] [Issue 111272] No hyphenation with Graph ite fonts

2010-05-03 Thread kstribley
To comment on the following update, log in, then open the issue:
http://www.openoffice.org/issues/show_bug.cgi?id=111272





--- Additional comments from kstrib...@openoffice.org Mon May  3 06:14:10 
+ 2010 ---
Created an attachment (id=69249)
Example using 'surfing' which expects hyphenation mid-ligature


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[gsl-issues] [Issue 111272] No hyphenation with Graph ite fonts

2010-05-03 Thread kstribley
To comment on the following update, log in, then open the issue:
http://www.openoffice.org/issues/show_bug.cgi?id=111272





--- Additional comments from kstrib...@openoffice.org Mon May  3 06:20:46 
+ 2010 ---
The latest patch attached to issue 111054, attachment 69248, should render the
fiLigHyph document correctly. I got round the potential problem with the
ligature spanning the hyphenation point by disabling extra context being used to
create the segment when SAL_LAYOUT_COMPLEX_DISABLED is set and adjusting the
caching to not return a segment with a cluster spanning the requested 
mnEndCharPos.

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[gsl-issues] [Issue 111272] No hyphenation with Graph ite fonts

2010-05-03 Thread kstribley
To comment on the following update, log in, then open the issue:
http://www.openoffice.org/issues/show_bug.cgi?id=111272





--- Additional comments from kstrib...@openoffice.org Mon May  3 06:23:03 
+ 2010 ---
Created an attachment (id=69250)
Example showing Myanmar line breaking, which regresses with current fix.


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[gsl-issues] [Issue 111272] No hyphenation with Graph ite fonts

2010-05-03 Thread kstribley
To comment on the following update, log in, then open the issue:
http://www.openoffice.org/issues/show_bug.cgi?id=111272





--- Additional comments from kstrib...@openoffice.org Mon May  3 06:25:03 
+ 2010 ---
Created an attachment (id=69251)
Correct rendering when klbHyphenBreak is used


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[gsl-issues] [Issue 111272] No hyphenation with Graph ite fonts

2010-05-03 Thread kstribley
To comment on the following update, log in, then open the issue:
http://www.openoffice.org/issues/show_bug.cgi?id=111272





--- Additional comments from kstrib...@openoffice.org Mon May  3 06:26:17 
+ 2010 ---
Created an attachment (id=69252)
Bad rendering when klbLetterBreak


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[gsl-issues] [Issue 111272] No hyphenation with Graph ite fonts

2010-05-03 Thread kstribley
To comment on the following update, log in, then open the issue:
http://www.openoffice.org/issues/show_bug.cgi?id=111272





--- Additional comments from kstrib...@openoffice.org Mon May  3 06:40:20 
+ 2010 ---
The Myanmar attachments above show that line breaking occurs mid-syllable when
there are no spaces on a line. The first paragraph has Myanmar punctuation, so
presumably ICU prefers to break after those code points, which results in
reasonable rendering. In practice, Myanmar typists do normally type some spaces,
but it can be problematic in narrow columns.

I can see 2 possible ways to resolve the regression for Burmese with Padauk. 
1) implement a proper dictionary based line breaker for OOo
2) adjust break weight used in GetTextBreak according to whether
SAL_LAYOUT_COMPLEX_DISABLED is set

2) does not necessarily exclude 1), but it is dependent on there being no
complex scripts for which hyphenation is used.
1) is the best long term solution anyway, but would also need to be implemented
for Shan, Mon, Karen and probably several others.

NB: Although the Padauk font uses the klbHyphenBreak, no hyphen should be 
rendered.

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[gsl-issues] [Issue 111272] No hyphenation with Graph ite fonts

2010-05-03 Thread nemeth
To comment on the following update, log in, then open the issue:
http://www.openoffice.org/issues/show_bug.cgi?id=111272





--- Additional comments from nem...@openoffice.org Mon May  3 07:56:36 
+ 2010 ---
 NB: Although the Padauk font uses the klbHyphenBreak, no hyphen should be
rendered.

Hyphenator of OOo supports Unicode, but alternative or missing hyphen is not
yet. With an optional hyphen sign support, OOo's hyphenator would be suitable
for dictionary based line breaking. (Maybe it is better, than ICU's method,
because Liang's hyphenation algorithm based on competing patterns).


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[gsl-issues] [Issue 111272] No hyphenation with Graph ite fonts

2010-05-03 Thread hdu
To comment on the following update, log in, then open the issue:
http://www.openoffice.org/issues/show_bug.cgi?id=111272





--- Additional comments from h...@openoffice.org Mon May  3 10:55:57 + 
2010 ---
Using klbCellBreak is indeed overkill because conceptually klbLetterBreak would 
be sufficient for 
WE/EE's expectations. The problem was that Graphite seemed to ignore 
klbLetterBreak even when it 
was set as the preferred boundary.

Things such as start/end of line need support from WE/EE. IMHO these engines 
need to insert special 
codepoints so VCL has a chance to know the intent. Using the line break/ draw 
requests itself would 
not contain enough info as WE/EE switch portions even for simple attribute 
changes such as the text 
background color. Until Graphite gets these reliable instructions about where 
Writer wants his line 
starts/ends Graphite must disable these special ligatures.

For the topic of ligature splitting/breaking etc. I suggest that Writer inserts 
codepoints such as ZW* to 
suggest/allow or disallow ligature splits. This would solve the problem you 
mentioned and other 
problems in language which like composite words. In these all components of a 
ligature must be from 
the same morpheme.

 As regards scripts without OOo hyphenators, Myanmar script based languages 
 are one example.
 In Myanmar spaces are more common at phrase boundaries than word boundaries.

This is good example of the where the OOo hyphenator can and should be 
extended. AFAIK the 
hyphenator in lingucomponent just needs its syllable list extended for it.

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[gsl-issues] [Issue 111272] No hyphenation with Graph ite fonts

2010-05-01 Thread kstribley
To comment on the following update, log in, then open the issue:
http://www.openoffice.org/issues/show_bug.cgi?id=111272





--- Additional comments from kstrib...@openoffice.org Sat May  1 14:21:03 
+ 2010 ---
Thanks very much @nemeth and @hdu for reporting and investigating this and
explaining more about what GetTextBreak() needs to return. I think the long term
solution, will need to take into account the expanded text problem in issue
111054, which will exclude the use of Segment::findNextBreakPoint(...), since
there is no way to tell it in advance the extra char factor. We definitely, want
to avoid recreating a RangeSegment there because of the performance hit, but as
@hdu's TODO suggests that could probably be retrieved from the cache.

As far as the break weights are concerned, the information from the Graphite
GlyphInfo objects is returning a breakweight of +30 for all the letters, which
equates to klbLetterBreak, so in theory that should be sufficient, though
perhaps findNextBreakPoint requires a range like 
findNextBreakPoint(mnMinCharPos, gr::klbLetterBreak, gr::klbClipBreak,
targetWidth, fBreakWidth ); I think using gr::klbClipBreak will probably cause
problems with SE Asian scripts.

I think the biggest problem may be with the fi and fii ligatures. In the case of
in-suffi-cient it isn't too bad because the hyphenation point isn't
mid-ligature. However, with a word like surfing, it will be more difficult. I've
tweaked my patch for issue 111054 to use gr::klbLetterBreak and the best I get
is surfi-ng.  I'm not sure whether it is possible to get graphite to give a
different break-weight mid-ligature. If the GlyphInfo data is used, then it
certainly won't, since the info per Glyph.

Graphite has the ability to set start and end of line flags when a segment is
created. Currently these are not set, because it can cause trailing space to be
dropped in position calculations, which gives bad results in some of the other
layout methods. In the case of GetTextBreak it might be better to set at least
the end of line flag. The Segment::hasLineBoundaryContext() method could perhaps
be used to optimize this. However, afaik there is no way to know the start of
line context from the current OOo API in VCL. Even if the start and end of line
flags were set, it doesn't change the problem with hyphenation based on a
hyphenation engine external to Graphite. This would probably require an
extension to the Graphite API to allow this information to be passed into the
Graphite Text Source.

As regards scripts without OOo hyphenators, Myanmar script based languages are
one example. In Myanmar spaces are more common at phrase boundaries than word
boundaries. The Padauk graphite font has syllable based boundaries, which is an
improvement on space based though the best approach uses a combination of a
syllable algorithm and a word list. I hope to develop this for Burmese, soon. I
have tested it in the past, but the original word list I was given had copyright
issues, so I need to switch to another one.

My current patch for issue 111054 has a regression for justification, so I won't
post an update until I've diagnosed that.


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[gsl-issues] [Issue 111272] No hyphenation with Graph ite fonts

2010-04-30 Thread hdu
To comment on the following update, log in, then open the issue:
http://www.openoffice.org/issues/show_bug.cgi?id=111272


User hdu changed the following:

What|Old value |New value

 Summary|Hyphenation with Graphite |No hyphenation with Graphi
|fonts |te fonts





--- Additional comments from h...@openoffice.org Fri Apr 30 11:17:52 + 
2010 ---
 Graphite subsystem uses only the hyphenation information of the Graphite fonts
 for in-word hyphenation

ah, that would explain the behaviour for ignoring klbHyphenBreak. By why does 
it also fail for 
klbLetterBreak?

 in-word hyphenation of Graphite is not adequate for most of the European 
 languages

Indeed. As I said Writer/EditEngine use their dedicated hyphenator to adjust to 
the most appropriate 
hyphen position after consulting VCL for providing the first-fit whole-letter 
line break position. So in 
the current concept the glyph shaping engine has no say in that.

For scripts where OOo's hyphenator does not have support yet the concept of 
providing hyphen 
suggestions from a smart font table is nice. I am wondering though which 
scripts would benefit from 
this? Would they use the '-' as hyphen character too? I guess there cannot be 
many. And for them it is 
probably easier to update OOo's hyphenator for them.

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[gsl-issues] [Issue 111272] No hyphenation with Graph ite fonts

2010-04-30 Thread hdu
To comment on the following update, log in, then open the issue:
http://www.openoffice.org/issues/show_bug.cgi?id=111272


User hdu changed the following:

What|Old value |New value

 Attachment is patch|  |Created an attachment (id=
|  |69196)
using klbClipBreak 
|  |instead






--- Additional comments from h...@openoffice.org Fri Apr 30 13:25:00 + 
2010 ---
Created an attachment (id=69196)
using klbClipBreak instead


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[gsl-issues] [Issue 111272] No hyphenation with Graph ite fonts

2010-04-30 Thread hdu
To comment on the following update, log in, then open the issue:
http://www.openoffice.org/issues/show_bug.cgi?id=111272





--- Additional comments from h...@openoffice.org Fri Apr 30 13:30:42 + 
2010 ---
Using klbClipBreaking instead of hyphen or whole-letter breaking fixes the 
problem as it does not require 
detailed knowledge of the script inside the generic font. Graphite still 
returns the full-word line break 
suggestion but using the trick from issue 92342 also solves this. The 
breakiterator and hyphenator that 
Writer/EditEngine use then do the rest to get proper hyphenation positions.
@nemeth: please check your scenarios using my patch above, issue 111277 is 
solved by it too

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[gsl-issues] [Issue 111272] No hyphenation with Graph ite fonts

2010-04-30 Thread nemeth
To comment on the following update, log in, then open the issue:
http://www.openoffice.org/issues/show_bug.cgi?id=111272


User nemeth changed the following:

What|Old value |New value

  CC|'kstribley'   |'kami,kstribley,timar'





--- Additional comments from nem...@openoffice.org Fri Apr 30 13:58:14 
+ 2010 ---
 For scripts where OOo's hyphenator does not have support yet the concept of
 providing hyphen suggestions from a smart font table is nice. I am wondering 
 though which scripts would benefit from this? Would they use the '-' as 
 hyphen 
 character too? I guess there cannot be many. And for them it is 
 probably easier to update OOo's hyphenator for them.

Graphite has complete support for arbitrary changes at hyphenation points, end
and beginning of lines, moreover, typesetting a line (for example, Arabic uses
optional elongated character variants at end of the words instead of bigger
spaces for justification). OOo's hyphenation implementation has some problems in
this area, see 

 please check your scenarios using my patch above, issue 111277 is solved by 
 it too

It's fantastic. Many thanks for the quick fix. I will try to check it.


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[gsl-issues] [Issue 111272] No hyphenation with Graph ite fonts

2010-04-30 Thread nemeth
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http://www.openoffice.org/issues/show_bug.cgi?id=111272





--- Additional comments from nem...@openoffice.org Fri Apr 30 14:03:36 
+ 2010 ---
... Hyphenation implementation of OOo has some problems in this area, see Issue
71608 (Bad non-standard hyphenation of diaeresis and Unicode f ligatures) ...

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