Hi
i was trying to find a universal solution to import kerning by classes from fontforge to Glyphs app using python script. i found @mekkablue ‘s script named “Import Kerning from .fea file“ and change it a bit to match the classes naming structure and script direction (i also used chatGPT).
this is the script:
from __future__ import division, print_function, unicode_literals
import os
from GlyphsApp import Glyphs, GSGlyphsInfo
def importfea_file(Doc, filePath, DIR):
if not os.path.isfile(filePath):
print("File not found:", filePath)
return
with open(filePath, "r", encoding="utf-8") as f:
Font = Doc.font
FontMasterIndex = Doc.windowControllers()[0].masterIndex()
FontMaster = Font.masters[FontMasterIndex]
GlyphsInfo = GSGlyphsInfo.sharedManager()
KerningLines = []
Line = f.readline()
while Line:
Line = Line.strip()
if not Line:
Line = f.readline()
continue
if Line.startswith("@"):
key = Line[:Line.find(" ")]
key_name = key.split("_")[0][1:] + key.split("_")[-1]
GlyphNames = Line[Line.find("[")+1:Line.find("]")].split(" ")
Left = True
Right = True
if "first" in key:
Right = False
elif "second" in key:
Left = False
print("Creating group:", key_name, "Left:", Left, "Right:", Right)
print(" Contains glyphs:", GlyphNames)
for GlyphName in GlyphNames:
GlyphName = GlyphsInfo.niceGlyphNameForName_(GlyphName)
Glyph = Font.glyphForName_(GlyphName)
if Glyph:
if Left:
Glyph.setRightKerningGroup_(key_name)
if Right:
Glyph.setLeftKerningGroup_(key_name)
elif Line.startswith("pos"):
KerningLines.append(Line)
Line = f.readline()
if FontMaster.id not in Font.kerning:
Font.kerning[FontMaster.id] = {}
for Line in KerningLines:
Keys = Line.split()
if len(Keys) < 4:
continue
LeftKey = Keys[1]
RightKey = Keys[2]
Value = int(Keys[3].replace(";", ""))
if LeftKey.startswith("@"):
LeftKeyFinal = LeftKey
else:
LeftKeyFinal = Font.glyphs[LeftKey].id
if RightKey.startswith("@"):
RightKeyFinal = RightKey
else:
RightKeyFinal = Font.glyphs[RightKey].id
if DIR == 'RTL':
LeftKeyFinal, RightKeyFinal = RightKeyFinal, LeftKeyFinal
print(f"Setting kerning: {LeftKeyFinal} - {RightKeyFinal} = {Value}")
Font.kerning[FontMaster.id][(LeftKeyFinal, RightKeyFinal)] = Value
def main():
Doc = Glyphs.currentDocument
kern_fea_file_LTR = "/Users/amin/Desktop/kern_LTR.fea"
kern_fea_file_RTL = "/Users/amin/Desktop/kern_RTL.fea"
importfea_file(Doc, kern_fea_file_LTR, LTR)
importfea_file(Doc, kern_fea_file_RTL, RTL)
if __name__ == "__main__":
main()
and this is the kerning file sample:
#DIR:LTR
@kc58_first_1 = [A Aacute Agrave];
@kc58_first_2 = [E Eacute Egrave];
@kc58_first_3 = [O Oacute Ograve];
@kc58_second_1 = [V W];
@kc58_second_2 = [Y Yacute];
pos @kc58_first_1 @kc58_second_1 -80;
pos @kc58_first_1 @kc58_second_2 -70;
pos @kc58_first_2 @kc58_second_1 -60;
pos @kc58_first_3 @kc58_second_2 -65;
classes created in Glyphs app without any kerning values. kernings window show no kerning and i got this error when i trying to save the file:
i know there is some mistakes with the script and script direction implementation but i haven’t any clue.
