Import Masters via API

Glyphs
1

Hello Glyphs team,

I am trying to import masters via API:

for importMaster in importFont.masters:
    font.masters.append(importMaster)
    newMasterID = importMaster.id
    for glyph in font.glyphs:
        importGlyph = importFont.glyphs[glyph.name]
        glyph.layers[newMasterID] = importGlyph.layers[newMasterID]
    font.kerning[newMasterID] = importFont.kerning[newMasterID]

In principle it works, but the metrics and stem widths of the imported masters are not set. I guess, they are stored outside of the master object? As my script is from 2018, are there other API changes to consider as well?

Thank you in advance.

2

They have to be set on the font level. This changed in Glyphs 3 to ensure compatible metric and stem setups.

Look at GSFont on docu.glyphsapp.com, e.g.:

3

There is a method that handles this. So your script would look like this:

for importMaster in importFont.masters:
    font.addFontAsNewMaster_(importMaster)
1 Like
4

Great! Thank you.