source-foundry / dehinter Goto Github PK

The fontTools library is transitioning to Py3.6+ support as of the v4.0.0 library release. Need to bump the min support level to 3.6 from 3.5 here

At current, the GASP table modification appears to change the rangeGaspBehavior to 0x000f, which turns on:
-gridfit
-grayscale
-symmetric gridfit
-symmetric smoothing

My understanding is that this turns on hinting at the full ppem range (with smoothing, and all that).

For a script that is meant to remove all hinting, shouldn't the rangeGaspBehavior be set to 0x000a, which is:
-grayscale
-symmetric smoothing

This way you have full smoothing and the rasterizer doesn't try to apply gridfit when no hinting is present to instruct it how to implement gridfit.

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TBH I'm not sure who's wrong or right here, just wanted to put this out here as an observation.

https://github.com/khaledhosny/ots/blob/ff09cd0b6b0dd210a4c1bafd61fcbbba21738751/src/maxp.cc#L50

The workaround is to call dehinter with --keep-maxp.

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Add options like:

--keep-ltsh

that bypass execution of the default changes associated with the respective tables in dehinted fonts.

Annotate Python source files with type hints and add mypy static type checks.

Should dehinter also remove cvarif dehinting a VF?

ttfautohint -d and pyftsubset remove the VDMX table by default. Identified this in the Ubuntu-Regular.ttf font. This should be added. Will include a --keep-vdmx option to keep the table when needed.