[Development] Making FreeType and platform-independent HarfBuzz-NG available on all platforms

[Konstantin Ritt]

Hi,

2014-09-25 17:12 GMT+04:00 Andreas Hartmetz <andreas.hartmetz at kdab.com>:

> Hello,
>
> we have a customer who is interested (among possibly other font
> rendering improvements) in using the same high-quality font stack on all
> platforms, for which HarfBuzz-NG / FreeType is the obvious candidate. I
> wonder if patches to do that would be accepted. It seems fairly
> uncontroversial to me, but you never know.


Of course. Feel free to add me to the reviewers list.


> Note that, while FreeType is already available on Windows, it needs a
> lot of polishing to look as good as on Linux. It seems like
> rasterization is done by FreeType in that FreeType/Windows case, but for
> shaping HarfBuzz uses input (basically glyph bounding boxes) from
> Windows API, which causes things like cut-off glyphs because the two
> APIs don't quite agree about the metrics.


That's probably the main reason why we don't use FT on all platforms by
default.


> Some additional CI capacity might be required to test it on OSX - there
> is a bit of a conflict insofar that it's easier to make it a compile-
> time option: on OSX things are curently pretty hard-wired to CoreText,
> including in HarfBuzz-NG itself, but that requires far more CPU power to
> test due to the need to compile another configuration. Does anyone have
> any ideas for solving this?
>


> Cheers,
> Andreas
>
> --
> Andreas Hartmetz | andreas.hartmetz at kdab.com | Software Engineer
> KDAB (Deutschland) GmbH&Co KG, a KDAB Group company
> Tel. Germany +49-30-521325470, Sweden (HQ) +46-563-540090
> KDAB - Qt Experts - Platform-independent software solutions
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>

Regards,
Konstantin
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