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authorJohn Tapsell <john.tapsell.ext@basyskom.com>2012-02-08 10:12:13 +0000
committerQt by Nokia <qt-info@nokia.com>2012-02-23 15:07:58 +0100
commit785e95ef0a95ca8fb39ef57678cd4876ee657c43 (patch)
tree6791a39301cd8823482f4a045ed0b53f2df2cc8c /src/gui/text
parentcf2ca62dcd2494155b9c07d6a14df7c453226c1e (diff)
Harfbuzz-thai: Hide ZWJ and ZWNJ characters and show Inherited characters
Thai is not supposed to have ZWJ and ZWNJ characters or any other of the Inherited Unicode Scripts (http://www.verisigninc.com/assets/idn-inherited-unicode-script.pdf) - they don't have a mapping to the thai encoding tis620 which libthai requires. However it is an unfortunate fact that there are many websites etc that liberally place these ZWJ and ZWNJ characters throughout thai text to force word boundaries, so we must also deal with them. We deal with all Inherited characters by mapping them to the invalid code ~0 in tis620 encoding, following what libthai does internally in its own tis620 encoding functions, and then replacing this character with the original unicode and setting dontPrint to true to hide the ZWJ and ZWNJ characters. Includes a unit test to check the behaviour. Change-Id: I1ee8388b650cb5fc61bcb265efb9843c73f327ac Reviewed-by: Adrian Yanes <ext-adrian.yanes@nokia.com> Reviewed-by: Lars Knoll <lars.knoll@nokia.com> Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@nokia.com>
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