Questions about the font shaping tender
vmiklos at collabora.co.uk
Tue Feb 2 10:15:07 CET 2016
I think the problem to solve is that we have different layout on Linux,
Windows and OS X, which means it's next to impossible to write unit
tests that assert the text is laid out correctly, since there can be
small differences today. The hope is that this is the root cause of e.g.
the chart tests which are not enabled by default today.
As far as I know, there are two ways you can solve this:
- use the Linux stack everywhere (fontconfig, freetype, harfbuzz?
something like that), IIRC that's what e.g. Chromium does
- create a 4th layout in VCL, which is just a stub, but gives exactly
the same results in all platforms, to allow writing unit tests that
are executed in all platforms
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