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to make it conformant to the Unicode 6.1 specifications #14 and #29.
The most important changes are:
* The implementation has been reworked from scratch to fix all known bugs;
* Separate-out the grapheme and the line breaking implementation to eliminate
an overhead due to calculating unnecessary breaks;
* Stop using deprecated SG class in favor of resolving pairs of surrogates;
* A proper support for SMP code points;
* Support for extended grapheme clusters (a drop-in replacement for the legacy
grapheme clusters as of Unicode 5.1);
* The hardcoded tailoring of UBA has been eliminated which breaks the 7 years-old
lineBreaking test. Some later, we'll investigate if such a tailoring is still needed.
Change-Id: I9f5867b3cec753b4fc120bc5a7e20f9a73d89370
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
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to keep them consistent with positions for all other flags.
This changes the internal behavior so that attributes[0].lineBreakType now means
"break opportunity at start of the text (before the first character in the string)"
and is always assigned with HB_NoBreak to conform rule LB2
(see http://www.unicode.org/reports/tr14/#LB2).
The current implementation is based on the sample implementation from tr14
that aimed to be as simple as possible rather than to be optimal.
From now, we can use pieces of the attributes array "as is"
without having to adjust some positions. Or we can analize some long text
by chunks (e.g. paragraph by paragraph) and consume less memory.
This introduces a minor overhead that will be eliminated shortly.
Change-Id: Ic873a05a9d5203b1c3d5aff2e4445a3f034c4bd2
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
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SoftHyphen enum value was added to specify such a boundary reason
Change-Id: I4248909eed6ab8cbca419de4dcf9fe917620a158
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
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Add QUnicodeTools namespace and rename qGetCharAttributes to initCharAttributes;
Make it possible to disable tailoring globally by overriding
qt_initcharattributes_default_algorithm_only value
(useful for i.e. running the specification conformance tests);
This is mostly a preparation step for the upcoming patches.
Change-Id: I783879fd17b63b52d7983e25dad5b820f0515e7f
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
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there are several reasons to do this:
* text breaking is not a shaper's job;
* since the text breaking rules are bound to a specific Unicode version,
updating Qt's internal unicode data would require updating the data in HB as well;
* makes porting to HurfBuzz-NG some easier
Change-Id: I0bbf8e8a343bc074696f4ddf2ae4e7fa32a61629
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
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As in the past, to avoid rewriting various autotests that contain
line-number information, an extra blank line has been inserted at the
end of the license text to ensure that this commit does not change the
total number of lines in the license header.
Change-Id: I311e001373776812699d6efc045b5f742890c689
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
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Replace Nokia contact email address with Qt Project website.
Change-Id: I431bbbf76d7c27d8b502f87947675c116994c415
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
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Change-Id: I02f2c620296fcd91d4967d58767ea33fc4e1e7dc
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
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Updated version of LGPL and FDL licenseheaders.
Apply release phase licenseheaders for all source files.
Reviewed-by: Trust Me
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When QTextBoundaryFinder doesn't own the buffer, don't realloc it and
get a new one instead.
Reviewed-by: Ritt Konstantin
(cherry picked from commit 320f172c851a4720299297c8b3b757eb1202c568)
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This is the beginning of revision history for this module. If you
want to look at revision history older than this, please refer to the
Qt Git wiki for how to use Git history grafting. At the time of
writing, this wiki is located here:
http://qt.gitorious.org/qt/pages/GitIntroductionWithQt
If you have already performed the grafting and you don't see any
history beyond this commit, try running "git log" with the "--follow"
argument.
Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12
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