def interpolate_layout(designspace_filename, loc, finder):
masters, instances = designspace.load(designspace_filename)
base_idx = None
for i, m in enumerate(masters):
if 'info' in m and m['info']['copy']:
assert base_idx is None
base_idx = i
assert base_idx is not None, "Cannot find 'base' master; Add <info> element to one of the masters in the .designspace document."
from pprint import pprint
print("Index of base master:", base_idx)
print("Building GX")
print("Loading TTF masters")
basedir = os.path.dirname(designspace_filename)
master_ttfs = [
finder(os.path.join(basedir, m['filename'])) for m in masters
]
master_fonts = [TTFont(ttf_path) for ttf_path in master_ttfs]
#font = master_fonts[base_idx]
font = TTFont(master_ttfs[base_idx])
master_locs = [o['location'] for o in masters]
axis_tags = set(master_locs[0].keys())
assert all(axis_tags == set(m.keys()) for m in master_locs)
# Set up axes
axes = {}
for tag in axis_tags:
default = master_locs[base_idx][tag]
lower = min(m[tag] for m in master_locs)
upper = max(m[tag] for m in master_locs)
axes[tag] = (lower, default, upper)
print("Axes:")
pprint(axes)
print("Location:", loc)
print("Master locations:")
pprint(master_locs)
# Normalize locations
loc = models.normalizeLocation(loc, axes)
master_locs = [models.normalizeLocation(m, axes) for m in master_locs]
print("Normalized location:", loc)
print("Normalized master locations:")
pprint(master_locs)
# Assume single-model for now.
model = models.VariationModel(master_locs)
assert 0 == model.mapping[base_idx]
merger = InstancerMerger(model, loc)
print("Building variations tables")
merge_tables(font, merger, master_fonts, axes, base_idx, ['GPOS'])
return font
def interpolate_layout(designspace_filename, loc, finder):
masters, instances = designspace.load(designspace_filename)
base_idx = None
for i,m in enumerate(masters):
if 'info' in m and m['info']['copy']:
assert base_idx is None
base_idx = i
assert base_idx is not None, "Cannot find 'base' master; Add <info> element to one of the masters in the .designspace document."
from pprint import pprint
print("Index of base master:", base_idx)
print("Building GX")
print("Loading TTF masters")
basedir = os.path.dirname(designspace_filename)
master_ttfs = [finder(os.path.join(basedir, m['filename'])) for m in masters]
master_fonts = [TTFont(ttf_path) for ttf_path in master_ttfs]
#font = master_fonts[base_idx]
font = TTFont(master_ttfs[base_idx])
master_locs = [o['location'] for o in masters]
axis_tags = set(master_locs[0].keys())
assert all(axis_tags == set(m.keys()) for m in master_locs)
# Set up axes
axes = {}
for tag in axis_tags:
default = master_locs[base_idx][tag]
lower = min(m[tag] for m in master_locs)
upper = max(m[tag] for m in master_locs)
axes[tag] = (lower, default, upper)
print("Axes:")
pprint(axes)
print("Location:", loc)
print("Master locations:")
pprint(master_locs)
# Normalize locations
loc = models.normalizeLocation(loc, axes)
master_locs = [models.normalizeLocation(m, axes) for m in master_locs]
print("Normalized location:", loc)
print("Normalized master locations:")
pprint(master_locs)
# Assume single-model for now.
model = models.VariationModel(master_locs)
assert 0 == model.mapping[base_idx]
merger = InstancerMerger(font, model, loc)
print("Building variations tables")
merge_tables(font, merger, master_fonts, axes, base_idx, ['GPOS'])
return font
def _merge_OTL(font, model, master_fonts, axisTags, base_idx):
print("Merging OpenType Layout tables")
merger = VariationMerger(model, axisTags)
merge_tables(font, merger, master_fonts, axisTags, base_idx, ['GPOS'])
store = merger.store_builder.finish()
try:
GDEF = font['GDEF'].table
assert GDEF.Version <= 0x00010002
except KeyError:
font['GDEF'] = newTable('GDEF')
GDEFTable = font["GDEF"] = newTable('GDEF')
GDEF = GDEFTable.table = ot.GDEF()
GDEF.Version = 0x00010003
GDEF.VarStore = store
def _merge_OTL(font, model, master_fonts, axisTags, base_idx):
log.info("Merging OpenType Layout tables")
merger = VariationMerger(model, axisTags, font)
merge_tables(font, merger, master_fonts, axisTags, base_idx, ['GPOS'])
store = merger.store_builder.finish()
try:
GDEF = font['GDEF'].table
assert GDEF.Version <= 0x00010002
except KeyError:
font['GDEF']= newTable('GDEF')
GDEFTable = font["GDEF"] = newTable('GDEF')
GDEF = GDEFTable.table = ot.GDEF()
GDEF.Version = 0x00010003
GDEF.VarStore = store
