[HarfBuzz] HB-NG and Qt

[Rolf Langenhuijzen]

I'm not 100% on this discussion but I'm behind a Windows 7 machine at
the moment so and not able to inspect of a font has a certain table, but
Notepad does not apply kerning to Tahoma. It does apply kerning to a
font from Adobe, for example Adobe Garamond Pro. Notepad does apply
kerning for Calibri, a "newer" MS font. So I think for all "new" system
fonts kerning is applied. So I assume they have a kern feature (and
Tahoma does not). 

Does this help? 

Is there a easy tool for Windows to output these features per file? 

Rolf 

Konstantin Ritt schreef op 2014-11-07 09:17: 

> Since we didn't find any native Windows app which applies kerning for these fonts, Eskil just re-considered the described report from "regression" to "fix" ;) 
> 
> Thanks guys. 
> 
> Regards,
> Konstantin 
> 
> 2014-11-07 10:22 GMT+04:00 Khaled Hosny <khaledhosny at eglug.org>:
> 
>> On Thu, Nov 06, 2014 at 08:25:05PM +0000, Jonathan Kew wrote:
>>> On 6/11/14 20:10, Khaled Hosny wrote:
>>>>On Thu, Nov 06, 2014 at 09:32:26AM -0800, Behdad Esfahbod wrote:
>>>>>On 14-11-05 11:50 PM, Khaled Hosny wrote:
>>>>>>Tahoma (at least the version shipped in Windows 7) has a kern table,
>>>>>>but no kern feature in its GPOS table, so HarfBuzz will not apply the
>>>>>>kern table as Behdad described. Uniscribe does not apply the kern
>>>>>>table here either AFAICT, so I think the font is working as intended.
>>>>>
>>>>>That was indeed my thinking before. From what I remember, Uniscribe *never*
>>>>>applied the TrueType 'kern' table; it was left to applications to do that.
>>>>>
>>>>>So I think what I like to see is: on versions of Windows that ship with such
>>>>>fonts, does notepad apply kerning? If it does, we should do in HarfBuzz.
>>>>>Otherwise I'm leaning towards keeping HarfBuzz as is.
>>>>
>>>>I tried notepad while testing this and it did not apply kerning for that
>>>>font (I got kerning in few other random fonts I tried, just in case).
>>> 
>>> In the fonts where you did get kerning, is there a GPOS 'kern' feature
>>> present?
>> 
>> I tried some Adobe fonts so I think those have a kern feature, but I
>> tried some MS fonts as well (I don't recall which fonts and I don't have
>> that machine around to check again now).
>> 
>> Regards,
>> Khaled
> 
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