2015-02-24 13:58 GMT+04:00 Vignesh Raman <[email protected]>: > Hi, > > In one of the test using qt harfbuzz the font "ซ้ำ" is rendered as > http://postimg.org/image/77eo3ekbb/bfc768ce/ > > There was a similar issue reported in > https://bugreports.qt.io/browse/QTBUG-21206. > > I applied the harfbuzz thai patches from, > > http://linux.thai.net/websvn/wsvn/software.qt/trunk/qt-everywhere-opensource-4.7.0/?#ad73b806583aa98bb601f6b456fa92491 > > Also I applied the patch, > Fix isolated Thai SARA AM handling - > 44f415aafaf7eec56b31468a58e0ca768bbc082d > > But the issue was still not resolved. > > I checked in harfbuzz-0.9.38, > ./hb-view --annotate Tahoma.ttf "ซ้ำ" > thai1.png > > The text rendered properly (There is no overlap of vocal as shown in > previous image) > http://postimg.org/image/h62uhsu29/dab679e6/ > > You need Qt 5.5 (where HB-NG is the preferred shaper engine) or Qt 5.4 configured with -qt-harfbuzz. Plz re-open QTBUG-21206 <https://bugreports.qt.io/browse/QTBUG-21206> if the issue still reproducible with 5.5.
> > My questions > 1) From above two test can we confirm that harfbuzz-0.9.38 renders the > thai text correctly and qt harfbuzz is not rendering correctly? > yes > 2) Is there a way to test thai characters/text with > qt-everywhere-opensource-src-4.7.4/src/3rdparty/harfbuzz ? > no. use Qt>=5.4 > 3) Is this a know issue with qt harfbuzz ? > didn't you just point to QTBUG-21206 <https://bugreports.qt.io/browse/QTBUG-21206>? so I'd say it is a known issue for old Qt. Regards, Konstantin
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