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use a v1.1 STAT table with format 1 & 3 records (instead of v1.2 with format 4) to make things work smoothly in Adobe InDesign. Re #577

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This commit is contained in:
Rasmus Andersson 2023-06-12 18:16:07 -07:00
parent 582467fa8d
commit fd99812ed0
1 changed files with 40 additions and 9 deletions
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49
misc/tools/bake-vf.py
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@ -25,6 +25,7 @@ from fontTools.ttLib import TTFont
from fontTools.otlLib.builder import buildStatTable
# STAT_AXES is used for making a STAT table with format 4 records
STAT_AXES = [
{ "name": "Optical Size", "tag": "opsz" },
{ "name": "Weight", "tag": "wght" },
@ -32,7 +33,10 @@ STAT_AXES = [
]
# stat_locations is used for making a STAT table with format 4 records
def stat_locations(is_italic):
# see https://learn.microsoft.com/en-us/typography/opentype/spec/
# stat#axis-value-table-format-4
ital = 1 if is_italic else 0
suffix = " Italic" if is_italic else ""
return [
@ -41,14 +45,32 @@ def stat_locations(is_italic):
{ "name": "Light"+suffix, "location":{"wght":300, "ital":ital} },
{ "name": "Regular"+suffix, "location":{"wght":400, "ital":ital}, "flags":0x2 },
{ "name": "Medium"+suffix, "location":{"wght":500, "ital":ital} },
{ "name": "SemiBold"+suffix, "location":{"wght":600, "ital":ital} },
{ "name": "Bold"+suffix, "location":{"wght":700, "ital":ital} },
{ "name": "Heavy"+suffix, "location":{"wght":800, "ital":ital} },
{ "name": "SemiBold"+suffix, "location":{"wght":580, "ital":ital} },
{ "name": "Bold"+suffix, "location":{"wght":660, "ital":ital} },
{ "name": "ExtraBold"+suffix, "location":{"wght":780, "ital":ital} },
{ "name": "Black"+suffix, "location":{"wght":900, "ital":ital} },
]
# "flags":0x2
# Indicates that the axis value represents the “normal” value
# for the axis and may be omitted when composing name strings.
# stat_axes is used for making a STAT table with format 1 & 3 records
def stat_axes(is_italic):
# see https://learn.microsoft.com/en-us/typography/opentype/spec/
# stat#axis-value-table-format-3
suffix = " Italic" if is_italic else ""
return [
{ "name": "Optical Size", "tag": "opsz" },
{ "name": "Weight", "tag": "wght", "values": [
{ "name": "Thin"+suffix, "value": 100, "linkedValue": 400 },
{ "name": "ExtraLight"+suffix, "value": 200, "linkedValue": 500 },
{ "name": "Light"+suffix, "value": 300, "linkedValue": 580 },
{ "name": "Regular"+suffix, "value": 400, "linkedValue": 660, "flags":0x2 },
{ "name": "Medium"+suffix, "value": 500, "linkedValue": 780 },
{ "name": "SemiBold"+suffix, "value": 580, "linkedValue": 900 },
{ "name": "Bold"+suffix, "value": 660 },
{ "name": "ExtraBold"+suffix, "value": 780 },
{ "name": "Black"+suffix, "value": 900 },
]},
]
WINDOWS_ENGLISH_IDS = 3, 1, 0x409
@ -248,9 +270,18 @@ def setFamilyName(font, nextFamilyName):
def gen_stat(ttfont):
ital = 1 if font_is_italic(ttfont) else 0
locations = stat_locations(ital)
buildStatTable(ttfont, STAT_AXES, locations=locations)
# builds a STAT table
# https://learn.microsoft.com/en-us/typography/opentype/spec/stat
#
# We are limited to format 2 or 3 records, else Adobe products like InDesign
# bugs out. See https://github.com/rsms/inter/issues/577
#
# build a version 1.1 STAT table with format 1 and 3 records:
buildStatTable(ttfont, stat_axes(font_is_italic(ttfont)))
#
# build a version 1.2 STAT table with format 4 records:
# locations = stat_locations(font_is_italic(ttfont))
# buildStatTable(ttfont, STAT_AXES, locations=locations)
# def fixup_fvar(ttfont):