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Re: [ft-devel] Auto Embolding of Lohit Devanagari


From: address@hidden
Subject: Re: [ft-devel] Auto Embolding of Lohit Devanagari
Date: Mon, 27 Feb 2012 21:11:26 +0530



On 27 February 2012 19:36, Alexei Podtelezhnikov <address@hidden> wrote:
On Mon, Feb 27, 2012 at 2:12 AM, address@hidden
<address@hidden> wrote:
> On 27 February 2012 07:58, Alexei Podtelezhnikov <address@hidden> wrote:
>> <address@hidden> wrote:
>> > I think there are 2 issues in auto-embolden Lohit Devanagari;
>> > a) disconnection of horizontal strokes (which should be connected with
>> > previous/next glyph)4.8
>>
>> It looks like advance value is incorrectly adjusted or calculated.
>> I was able to reproduce this on Fedora 16 x86_64, 64-bit build of
>> freetype-2.4.8.
>>
>> Pravin, can you check Fedora x86_64 spin?
>
> Still the major problem is broken upper horizontal BAR, in local language we
> call it Shirorekha. It should be continuous as it is in Lohit normal.

In this particular font the glyph width is larger than it advance,
which is unusual.
FT_Outline_Embolden does not adjust glyph metrics. So I wonder how you handle
the advance values or which higher level text layout library does that for you.

Earlier even me too thought it might be problem. But even if we make right and left kerning ZERO result does not change.

Text "कखगघचाक"  u0915u0916
I have changes width of only above characters in font  (see u'\u0915\u0916\u0917\u0918\u091a\u093e\u0915' characters)
Updated TTF file http://pravins.fedorapeople.org/Lohit-Devanagari.ttf
Updated Sfd file http://pravins.fedorapeople.org/Lohit-Devanagari.sfd
Screenshot http://pravins.fedorapeople.org/Screenshot-lohit-test-3.png

Does hinting makes any difference here with Bold?

Regards,
Pravin Satpute

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