def buildCompatChars(sfd, ttf):
zwj = u'\u200D'
ranges = (
(0xfb50, 0xfbb1),
(0xfbd3, 0xfd3d),
(0xfd50, 0xfdf9),
(0xfdfc, 0xfdfc),
(0xfe70, 0xfefc),
)
with open(ttf, "rb") as f:
data = f.read()
blob = HarfBuzz.glib_blob_create(GLib.Bytes.new(data))
face = HarfBuzz.face_create(blob, 0)
hbfont = HarfBuzz.font_create(face)
upem = HarfBuzz.face_get_upem(face)
HarfBuzz.font_set_scale(hbfont, upem, upem)
HarfBuzz.ot_font_set_funcs(hbfont)
ttfont = TTFont(ttf)
for r in ranges:
for c in range(r[0], r[1]+1):
dec = ucd.decomposition(unichr(c)).split()
if dec:
keyword = dec[0]
text = u''
for i in dec[1:]:
text += unichr(int(str(i),16))
if keyword == '<initial>':
text = text + zwj
elif keyword == '<final>':
text = zwj + text
elif keyword == '<medial>':
text = zwj + text + zwj
components = shape(text, hbfont)
if components:
glyph = sfd.createChar(c)
glyph.clear()
glyph.color = 0xff0000 # red color
x = 0
for component in components:
gid = component[0]
name = ttfont.getGlyphName(gid)
x_advance = component[1]
x_offset = component[2]
y_offset = component[3]
matrix = psMat.translate(x + x_offset, y_offset)
# ignore blank glyphs, e.g. space or ZWJ
if sfd[name].foreground or sfd[name].references:
glyph.addReference(name, matrix)
x += x_advance
glyph.width = x
def buildCompatChars(sfd, ttf):
zwj = u'\u200D'
ranges = (
(0xfb50, 0xfbb1),
(0xfbd3, 0xfd3d),
(0xfd50, 0xfdf9),
(0xfdfc, 0xfdfc),
(0xfe70, 0xfefc),
)
with open(ttf, "rb") as f:
data = f.read()
blob = HarfBuzz.glib_blob_create(GLib.Bytes.new(data))
face = HarfBuzz.face_create(blob, 0)
hbfont = HarfBuzz.font_create(face)
upem = HarfBuzz.face_get_upem(face)
HarfBuzz.font_set_scale(hbfont, upem, upem)
HarfBuzz.ot_font_set_funcs(hbfont)
ttfont = TTFont(ttf)
for r in ranges:
for c in range(r[0], r[1] + 1):
dec = ucd.decomposition(unichr(c)).split()
if dec:
keyword = dec[0]
text = u''
for i in dec[1:]:
text += unichr(int(str(i), 16))
if keyword == '<initial>':
text = text + zwj
elif keyword == '<final>':
text = zwj + text
elif keyword == '<medial>':
text = zwj + text + zwj
components = shape(text, hbfont)
if components:
glyph = sfd.createChar(c)
glyph.clear()
glyph.color = 0xff0000 # red color
x = 0
for component in components:
gid = component[0]
name = ttfont.getGlyphName(gid)
x_advance = component[1]
x_offset = component[2]
y_offset = component[3]
matrix = psMat.translate(x + x_offset, y_offset)
# ignore blank glyphs, e.g. space or ZWJ
if sfd[name].foreground or sfd[name].references:
glyph.addReference(name, matrix)
x += x_advance
glyph.width = x
class TTXLEFont(LEFontInstance):
def __init__(self, fname, size=12):
super(TTXLEFont, self).__init__()
self.ttx = TTFont(fname)
self.size = size
self.upem = self.ttx['head'].unitsPerEm
self.cmap = self.ttx['cmap'].getcmap(3, 1).cmap
def getFontTable(self, table):
return self.ttx.getTableData(table)
def getAscent(self):
self.ttx['hhea'].ascent * self.size * 1. / self.upem
def getDescent(self):
self.ttx['hhea'].descent * self.size * 1. / self.upem
def getLeading(self):
self.ttx['hhea'].lineGap * self.size * 1. / self.upem
def getUnitsPerEm(self):
return self.upem
def mapCharToGlyph(self, code):
return self.ttx.getGlyphID(self.cmap[code])
def getGlyphAdvance(self, glyph):
if glyph >= self.ttx['maxp'].numGlyphs:
return (0., 0.)
name = self.ttx.getGlyphName(glyph)
x = self.ttx['hmtx'][name][0] * self.size * 1. / self.upem
if 'vmtx' in self.ttx:
y = self.ttx['vmtx'][name][0] * self.size * 1. / self.upem
else:
y = 0.
return (x, y)
def getGlyphPoint(self, glyph, point):
return (0., 0.)
def getXPixelsPerEm(self):
return self.size
def getYPixelsPerEm(self):
return self.size
def getScaleFactorX(self):
return 1.
def getScaleFactorY(self):
return 1.
class TTXLEFont(LEFontInstance):
def __init__(self, fname, size=12):
super(TTXLEFont, self).__init__()
self.ttx = TTFont(fname)
self.size = size
self.upem = self.ttx['head'].unitsPerEm
self.cmap = self.ttx['cmap'].getcmap(3, 1).cmap
def getFontTable(self, table):
return self.ttx.getTableData(table)
def getAscent(self):
self.ttx['hhea'].ascent * self.size * 1. / self.upem
def getDescent(self):
self.ttx['hhea'].descent * self.size * 1. / self.upem
def getLeading(self):
self.ttx['hhea'].lineGap * self.size * 1. / self.upem
def getUnitsPerEm(self):
return self.upem
def mapCharToGlyph(self, code):
return self.ttx.getGlyphID(self.cmap[code])
def getGlyphAdvance(self, glyph):
if glyph >= self.ttx['maxp'].numGlyphs:
return (0., 0.)
name = self.ttx.getGlyphName(glyph)
x = self.ttx['hmtx'][name][0] * self.size * 1. / self.upem
if 'vmtx' in self.ttx:
y = self.ttx['vmtx'][name][0] * self.size * 1. / self.upem
else:
y = 0.
return (x, y)
def getGlyphPoint(self, glyph, point):
return (0., 0.)
def getXPixelsPerEm(self):
return self.size
def getYPixelsPerEm(self):
return self.size
def getScaleFactorX(self):
return 1.
def getScaleFactorY(self):
return 1.
else:
features_string += f' {feature_text_line}'
features_string += f'\n}} {feature_name};\n'
aalt_string += '} aalt;\n'
final_string = classes_string + prefix_string + aalt_string + features_string
# Rename glyphs within features string to match target set
print(' Renaming features glyphs')
with open(Path(INDEX_DIR / f'{config["inputFile"]}.json'),
'r') as file:
glyph_id_map = json.load(file)
glyph_id_map_keys = sorted(glyph_id_map.keys(), reverse=True)
for glyph_name in glyph_id_map_keys:
regex = rf'(^|\s|\{{|\[|\\)({glyph_name})(\s|\}}|\]|\'|\;|$)'
if re.search(regex, final_string) is not None:
glyph_id = glyph_id_map[glyph_name]
new_glyph_name = input_font.getGlyphName(glyph_id)
# Run twice for instances that are sandwiched between two other instances
for i in range(2):
final_string = re.sub(regex,
f'\g<1>{new_glyph_name}\g<3>',
final_string)
with open(Path(TEMP_DIR / 'features.fea'), 'w') as features_file:
features_file.write(final_string)
# Set up substitution functionality
print(' Adding features set to output font')
addOpenTypeFeaturesFromString(output_font, final_string)
# Save font
print(' Saving output font to TTF file')
output_font.save(output_file_path)
output_font.close()
print(f'Completed font "{output_file_path}"')
import icu
icufont = TTXLEFont(sys.argv[1], ttx=tt)
iculayout = icu.LayoutEngine(
icufont,
icu.ScriptCodes.index(opts.script) if opts.script else 0, 0)
lf = codecs.open(sys.argv[2], "r", "utf_8")
count = 0
for line in lf.readlines():
count += 1
text = line.strip()
b = hbng.Buffer(text)
b.shape(hbfont, shapers=["ot"])
hbres = [x.gid for x in b.glyphs]
s = gr.Segment(grfont, grface, 0, text, 0)
grres = [x.gid for x in s.slots]
if opts.compare == 'graphite':
if hbres != grres:
hbnres = [tt.getGlyphName(x) for x in hbres]
grnres = [tt.getGlyphName(x) for x in grres]
print("Failed at line %d: %s %r, %r" %
(count, text.encode('utf_8'), hbnres, grnres))
elif opts.compare == "icu":
iculayout.layoutChars(text, 0)
icures = filter(lambda x: x != 65535, list(iculayout.getGlyphs()))
if hbres != icures:
hbnres = [tt.getGlyphName(x) for x in hbres]
icunres = [tt.getGlyphName(x) for x in icures]
print("Failed at line %d: %s %r, %r" %
(count, text.encode('utf_8'), hbnres, icunres))
preview = ""
for i in range(num_chars):
preview += str(chr(i + start_char))
image = Image.new("RGB", (1000, 1000))
draw = ImageDraw.Draw(image)
draw.text((0, 0), preview, font=font)
image = image.crop(image.getbbox())
image.save(args.tf + "_prev" + str(args.pt[pt]) + ".png")
pixels = image.load()
# Find the max and min values
ymax = 0
ymin = 0
for z in range(num_chars):
m = glyphtools.get_glyph_metrics(font_info,
font_info.getGlyphName(start_id + z))
new_ymax = (font_size * m['yMax'] / scale)
new_ymin = (font_size * m['yMin'] / scale)
ymin = round(min(ymin, new_ymin))
ymax = round(max(ymax, new_ymax))
maxmax = round(abs(ymin) + abs(ymax))
# We are adding a new font size. Allign the start address
if curr_offset & 3:
curr_offset = (curr_offset + 3) & ~3
# Add the glyph header indicating the global size of the font
font_data += abs(ymin).to_bytes(1, byteorder="little", signed=False)
font_data += abs(ymax).to_bytes(1, byteorder="little", signed=False)
font_data.append(0)
font_data.append(0)
tt = TTFont(sys.argv[1])
if opts.compare == "icu":
from palaso.font.icule import TTXLEFont
import icu
icufont = TTXLEFont(sys.argv[1], ttx=tt)
iculayout = icu.LayoutEngine(icufont, icu.ScriptCodes.index(opts.script) if opts.script else 0, 0)
lf = codecs.open(sys.argv[2], "r", "utf_8")
count = 0
for line in lf.readlines() :
count += 1
text = line.strip()
b = hbng.Buffer(text)
b.shape(hbfont, shapers=["ot"])
hbres = [x.gid for x in b.glyphs]
s = gr.Segment(grfont, grface, 0, text, 0)
grres = [x.gid for x in s.slots]
if opts.compare == 'graphite' :
if hbres != grres :
hbnres = [tt.getGlyphName(x) for x in hbres]
grnres = [tt.getGlyphName(x) for x in grres]
print("Failed at line %d: %s %r, %r" % (count, text.encode('utf_8'), hbnres, grnres))
elif opts.compare == "icu":
iculayout.layoutChars(text, 0)
icures = filter(lambda x: x != 65535, list(iculayout.getGlyphs()))
if hbres != icures :
hbnres = [tt.getGlyphName(x) for x in hbres]
icunres = [tt.getGlyphName(x) for x in icures]
print("Failed at line %d: %s %r, %r" % (count, text.encode('utf_8'), hbnres, icunres))