Re: [ft] i18n fonts

[Russell Shaw]

Adam Twardoch wrote:
> Russell,
>
> Unicode does not deal with text rendering -- this is another level. The 
> character-to-glyph transformation is being done on a layout level. The 
> most popular layout system is OpenType Layout. Then, the laid out glyph 
> coordinates are passed to a rasterizer such as the Microsoft system 
> rasterizer or such as FreeType.
>
> This should be your first reading:
> http://www.microsoft.com/typography/Glyph%20Processing/overview.mspx
>
> The most popular OpenType Layout engines are Uniscribe (pre-installed on 
> Windows, available through APIs), ICU Layout (opensource), 
> Pango/HarfBuzz (opensource), Monotype WorldType (commercial), Bitstream 
> Panorama (commercial). On Mac OS X, there is a number of text subsystems 
> such as ATSUI or CoreText, but they only support OpenType Layout in a 
> limited way (though the support was somewhat extended in Mac OS X 10.5).

Hi,
I want to make a font creation tool.
I can parse in the gsub tables. I was trying to do the gpos tables,
but the OpenType spec doesn't define "ValueRecord" in
"Single Adjustment Positioning: Format 1":

  http://www.microsoft.com/typography/otspec/gpos.htm