[HarfBuzz] Overlap of vocal with thai text

[Behdad Esfahbod]

Hi,

You want to use Qt with harfbuzz-ng, not old-harfbuzz.  I'm not sure how to do
that.  Search around for that perhaps.

behdad

On 15-02-24 01:58 AM, Vignesh Raman wrote:
> 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/
> 
> 
> 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?
> 2) Is there a way to test thai characters/text with
> qt-everywhere-opensource-src-4.7.4/src/3rdparty/harfbuzz ?
> 3) Is this a know issue with qt harfbuzz ?
> 
> Any pointers is appreciated. Thanks.
> 

-- 
behdad
http://behdad.org/