[HarfBuzz] Dotted circles in harfbuzz

[John Tapsell]

I suggested to Vignesh off the mailing list to apply the following patch:
http://pastebin.com/e3tJRYMP

i.e just adding:

                 glyphString[slen++] = C_DOTTED_CIRCLE;
+               item->attributes[slen-1].dontPrint = true; // FIXME this
will hide all dotted circle

However he found that this causes a crash.  I wasn't sure of the correct
fix for this.

John

On 24 June 2015 at 13:19, Vignesh Raman <rvignesh.raman at gmail.com> wrote:

> Hi All,
>
> I was checking a thai webpage which has a virtual keyboard,
> https://www.branah.com/thai
>
> When I open this website in chrome, I do not see the dotted circles in
> keyboard and
> when top level thai characters are typed  nothing appears in text area.
>
> Using a sample application (facybroswer) dotted circle is seen in the
> keyboard and when the top level thai characters are typed, it is seen
> in the text area along with dotted circle.
>
> The Qt version used is Qt 4.7.4. I see the dotted circle was added in
> harbuzz (harfbuzz old) bundled with Qt with the below patch,
>
> From 44f415aafaf7eec56b31468a58e0ca768bbc082d Mon Sep 17 00:00:00 2001
> From: Jiang Jiang <jiang.jiang at nokia.com>
> Date: Mon, 16 Jan 2012 15:39:56 +0100
> Subject: [PATCH] Fix isolated Thai SARA AM handling
>
> If I remove this patch the dotted circle is not seen. But when the
> first level vocal is entered nothing
> appears in the text area and the application crashes.
>
> So my questions are,
> 1) Is this dotted circle a standard feature in harbuzz or any qt web
> browsers.
> 2) Is it possbile to make the behaviour similar to chrome? Dotted
> circle hidden and no characters should be seen when top level thai
> characters are pressed.
>
> Thanks for any pointers.
>
> Regards,
> Vignesh.
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> HarfBuzz at lists.freedesktop.org
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>
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