Merge pull request #24 from dougfelt/master

change builder tooling to support emoji sequences
pull/28/head
Behdad Esfahbod 2015-11-18 15:20:27 -08:00
commit 0088b3e020
5 changed files with 378 additions and 70 deletions

174
Makefile
View File

@ -12,7 +12,6 @@
# See the License for the specific language governing permissions and
# limitations under the License.
EMOJI = NotoColorEmoji
font: $(EMOJI).ttf
@ -20,16 +19,32 @@ CFLAGS = -std=c99 -Wall -Wextra `pkg-config --cflags --libs cairo`
LDFLAGS = `pkg-config --libs cairo`
PNGQUANTDIR := third_party/pngquant
PNGQUANT := $(PNGQUANTDIR)/pngquant
PNGQUANTFLAGS = --speed 1 --skip-if-larger --ext '.png' --force
PNGQUANTFLAGS = --speed 1 --skip-if-larger --force
$(PNGQUANT):
$(MAKE) -C $(PNGQUANTDIR)
# zopflipng is better (about 10%) but much slower. it will be used if
# present. pass ZOPFLIPNG= as an arg to make to use optipng instead.
waveflag: waveflag.c
$(CC) $< -o $@ $(CFLAGS) $(LDFLAGS)
ZOPFLIPNG = zopflipng
OPTIPNG = optipng
EMOJI_BUILDER = third_party/color_emoji/emoji_builder.py
ADD_GLYPHS = third_party/color_emoji/add_glyphs.py
PUA_ADDER = map_pua_emoji.py
VS_ADDER = add_vs_cmap.py # from nototools
EMOJI_SRC_DIR := png/128
FLAGS_SRC_DIR := third_party/region-flags/png
BUILD_DIR := build
EMOJI_DIR := $(BUILD_DIR)/emoji
FLAGS_DIR := $(BUILD_DIR)/flags
RESIZED_FLAGS_DIR := $(BUILD_DIR)/resized_flags
RENAMED_FLAGS_DIR := $(BUILD_DIR)/renamed_flags
QUANTIZED_DIR := $(BUILD_DIR)/quantized_pngs
COMPRESSED_DIR := $(BUILD_DIR)/compressed_pngs
LIMITED_FLAGS = CN DE ES FR GB IT JP KR RU US
FLAGS = AD AE AF AG AI AL AM AO AR AS AT AU AW AX AZ \
SELECTED_FLAGS = AD AE AF AG AI AL AM AO AR AS AT AU AW AX AZ \
BA BB BD BE BF BG BH BI BJ BM BN BO BR BS BT BW BY BZ \
CA CC CD CF CG CH CI CK CL CM CN CO CR CU CV CW CX CY CZ \
DE DJ DK DM DO DZ \
@ -54,51 +69,127 @@ FLAGS = AD AE AF AG AI AL AM AO AR AS AT AU AW AX AZ \
WS \
YE \
ZA ZM ZW
ALL_FLAGS = $(basename $(notdir $(wildcard $(FLAGS_SRC_DIR)/*.png)))
FLAGS_SRC_DIR = third_party/region-flags/png
FLAGS_DIR = ./flags
FLAGS = $(SELECTED_FLAGS)
GLYPH_NAMES := $(shell ./flag_glyph_name.py $(FLAGS))
WAVED_FLAGS := $(foreach flag,$(FLAGS),$(FLAGS_DIR)/$(flag).png)
PNG128_FLAGS := $(foreach glyph_name,$(GLYPH_NAMES),$(addprefix ./png/128/emoji_$(glyph_name),.png))
FLAG_NAMES = $(FLAGS:%=%.png)
FLAG_FILES = $(addprefix $(FLAGS_DIR)/, $(FLAG_NAMES))
RESIZED_FLAG_FILES = $(addprefix $(RESIZED_FLAGS_DIR)/, $(FLAG_NAMES))
$(FLAGS_DIR)/%.png: $(FLAGS_SRC_DIR)/%.png ./waveflag $(PNGQUANT)
mkdir -p $(FLAGS_DIR)
./waveflag "$<" "$@"
optipng -quiet -o7 "$@"
$(PNGQUANT) $(PNGQUANTFLAGS) "$@"
FLAG_GLYPH_NAMES = $(shell ./flag_glyph_name.py $(FLAGS))
RENAMED_FLAG_NAMES = $(FLAG_GLYPH_NAMES:%=emoji_%.png)
RENAMED_FLAG_FILES = $(addprefix $(RENAMED_FLAGS_DIR)/, $(RENAMED_FLAG_NAMES))
flag-symlinks: $(WAVED_FLAGS)
$(subst ^, , \
$(join \
$(FLAGS:%=ln^-fs^../../flags/%.png^), \
$(GLYPH_NAMES:%=./png/128/emoji_%.png;) \
) \
)
EMOJI_NAMES = $(notdir $(wildcard $(EMOJI_SRC_DIR)/emoji_u*.png))
EMOJI_FILES= $(addprefix $(EMOJI_DIR)/,$(EMOJI_NAMES)))
$(PNG128_FLAGS): flag-symlinks
ALL_NAMES = $(EMOJI_NAMES) $(RENAMED_FLAG_NAMES)
EMOJI_PNG128 = ./png/128/emoji_u
ALL_QUANTIZED_FILES = $(addprefix $(QUANTIZED_DIR)/, $(ALL_NAMES))
ALL_COMPRESSED_FILES = $(addprefix $(COMPRESSED_DIR)/, $(ALL_NAMES))
EMOJI_BUILDER = third_party/color_emoji/emoji_builder.py
ADD_GLYPHS = third_party/color_emoji/add_glyphs.py
PUA_ADDER = map_pua_emoji.py
VS_ADDER = add_vs_cmap.py
ifeq (, $(shell which $(VS_ADDER)))
$(error "$(VS_ADDER) not in path, run setup.py in nototools")
# tool checks
ifeq (,$(shell which $(ZOPFLIPNG)))
ifeq (,$(wildcard $(ZOPFLIPNG)))
MISSING_ZOPFLI = fail
endif
endif
%.ttx: %.ttx.tmpl $(ADD_GLYPHS) $(UNI) $(PNG128_FLAGS)
python $(ADD_GLYPHS) "$<" "$@" "$(EMOJI_PNG128)"
ifeq (,$(shell which $(OPTIPNG)))
ifeq (,$(wildcard $(OPTIPNG)))
MISSING_OPTIPNG = fail
endif
endif
ifeq (, $(shell which $(VS_ADDER)))
MISSING_ADDER = fail
endif
emoji: $(EMOJI_FILES)
flags: $(FLAG_FILES)
resized_flags: $(RESIZED_FLAG_FILES)
renamed_flags: $(RENAMED_FLAG_FILES)
quantized: $(ALL_QUANTIZED_FILES)
compressed: $(ALL_COMPRESSED_FILES)
check_compress_tool:
ifdef MISSING_ZOPFLI
ifdef MISSING_OPTIPNG
$(error "neither $(ZOPFLIPNG) nor $(OPTIPNG) is available")
else
@echo "using $(OPTIPNG)"
endif
else
@echo "using $(ZOPFLIPNG)"
endif
check_vs_adder:
ifdef MISSING_ADDER
$(error "$(VS_ADDER) not in path, run setup.py in nototools")
endif
$(EMOJI_DIR) $(FLAGS_DIR) $(RESIZED_FLAGS_DIR) $(RENAMED_FLAGS_DIR) $(QUANTIZED_DIR) $(COMPRESSED_DIR):
mkdir -p "$@"
$(PNGQUANT):
$(MAKE) -C $(PNGQUANTDIR)
waveflag: waveflag.c
$(CC) $< -o $@ $(CFLAGS) $(LDFLAGS)
$(EMOJI_DIR)/%.png: $(EMOJI_SRC_DIR)/%.png | $(EMOJI_DIR)
echo "emoji $< $@"
@convert -extent 136x128 -gravity center -background none "$<" "$@"
$(FLAGS_DIR)/%.png: $(FLAGS_SRC_DIR)/%.png ./waveflag $(PNGQUANT) | $(FLAGS_DIR)
@./waveflag "$<" "$@"
$(RESIZED_FLAGS_DIR)/%.png: $(FLAGS_DIR)/%.png | $(RESIZED_FLAGS_DIR)
@convert -extent 136x128 -gravity center -background none "$<" "$@"
flag-symlinks: $(RESIZED_FLAG_FILES) | $(RENAMED_FLAGS_DIR)
@$(subst ^, , \
$(join \
$(FLAGS:%=ln^-fs^../resized_flags/%.png^), \
$(RENAMED_FLAG_FILES:%=%; ) \
) \
)
$(RENAMED_FLAG_FILES): flag-symlinks
$(QUANTIZED_DIR)/%.png: $(RENAMED_FLAGS_DIR)/%.png $(PNGQUANT) | $(QUANTIZED_DIR)
$(PNGQUANT) $(PNGQUANTFLAGS) -o "$@" "$<"
$(QUANTIZED_DIR)/%.png: $(EMOJI_DIR)/%.png $(PNGQUANT) | $(QUANTIZED_DIR)
$(PNGQUANT) $(PNGQUANTFLAGS) -o "$@" "$<"
$(COMPRESSED_DIR)/%.png: $(QUANTIZED_DIR)/%.png | check_compress_tool $(COMPRESSED_DIR)
ifdef MISSING_ZOPFLI
$(OPTIPNG) -quiet -o7 -clobber -force -out "$@" "$<"
else
$(ZOPFLIPNG) -y "$<" "$@" 2> /dev/null
endif
%.ttx: %.ttx.tmpl $(ADD_GLYPHS) $(ALL_COMPRESSED_FILES)
@python $(ADD_GLYPHS) "$<" "$@" "$(COMPRESSED_DIR)/emoji_u"
%.ttf: %.ttx
@rm -f "$@"
ttx "$<"
$(EMOJI).ttf: $(EMOJI).tmpl.ttf $(EMOJI_BUILDER) $(PUA_ADDER) \
$(EMOJI_PNG128)*.png $(PNG128_FLAGS)
python $(EMOJI_BUILDER) -V $< "$@" $(EMOJI_PNG128)
python $(PUA_ADDER) "$@" "$@-with-pua"
$(ALL_COMPRESSED_FILES) | check_vs_adder
@python $(EMOJI_BUILDER) -V $< "$@" "$(COMPRESSED_DIR)/emoji_u"
@python $(PUA_ADDER) "$@" "$@-with-pua"
$(VS_ADDER) --dstdir '.' -o "$@-with-pua-varsel" "$@-with-pua"
mv "$@-with-pua-varsel" "$@"
rm "$@-with-pua"
@ -106,5 +197,10 @@ $(EMOJI).ttf: $(EMOJI).tmpl.ttf $(EMOJI_BUILDER) $(PUA_ADDER) \
clean:
rm -f $(EMOJI).ttf $(EMOJI).tmpl.ttf $(EMOJI).tmpl.ttx
rm -f waveflag
rm -rf $(FLAGS_DIR)
rm -f `find -type l -name "*.png"`
rm -rf $(BUILD_DIR)
.SECONDARY: $(EMOJI_FILES) $(FLAG_FILES) $(RESIZED_FLAG_FILES) $(RENAMED_FLAG_FILES) \
$(ALL_QUANTIZED_FILES) $(ALL_COMPRESSED_FILES)
.PHONY: clean flags emoji renamed_flags quantized compressed check_compress_tool

View File

@ -4,12 +4,16 @@
<GlyphOrder>
<!-- The 'id' attribute is only for humans; it is ignored when parsed. -->
<GlyphID id="0" name=".notdef"/>
<GlyphID id="1" name="null"/>
<GlyphID id="2" name="nonmarkingreturn"/>
<GlyphID id="3" name="space"/>
<GlyphID id="4" name="u200D"/>
</GlyphOrder>
<head>
<!-- Most of this table will be recalculated by the compiler -->
<tableVersion value="1.0"/>
<fontRevision value="1.22"/>
<fontRevision value="1.23"/>
<checkSumAdjustment value="0x4d5a161a"/>
<magicNumber value="0x5f0f3cf5"/>
<flags value="00000000 00001011"/>
@ -119,12 +123,19 @@
<hmtx>
<mtx name=".notdef" width="2550" lsb="0"/>
<mtx name="null" width="0" lsb="0"/>
<mtx name="nonmarkingreturn" width="2550" lsb="0"/>
<mtx name="space" width="2550" lsb="0"/>
<mtx name="u200D" width="0" lsb="0"/>
</hmtx>
<cmap>
<tableVersion version="0"/>
<cmap_format_12 platformID="3" platEncID="10" language="0" format="12" reserved="0" length="1" nGroups="1">
<map code="0x0" name=".notdef"/><!-- &lt;control> -->
<map code="0xd" name="nonmarkingreturn"/>
<map code="0x20" name="space"/>
<map code="0x200d" name="u200D"/>
</cmap_format_12>
</cmap>
@ -145,7 +156,7 @@
Noto Color Emoji
</namerecord>
<namerecord nameID="5" platformID="3" platEncID="1" langID="0x409">
Version 1.22
Version 1.23
</namerecord>
<namerecord nameID="6" platformID="3" platEncID="1" langID="0x409">
NotoColorEmoji

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@ -0,0 +1,95 @@
import os
from os import path
import subprocess
OUTPUT_DIR = '/tmp/placeholder_emoji'
def generate_image(name, text):
print name, text.replace('\n', '_')
subprocess.check_call(
['convert', '-size', '100x100', 'label:%s' % text,
'%s/%s' % (OUTPUT_DIR, name)])
def is_color_patch(cp):
return cp >= 0x1f3fb and cp <= 0x1f3ff
def has_color_patch(values):
for v in values:
if is_color_patch(v):
return True
return False
def regional_to_ascii(cp):
return unichr(ord('A') + cp - 0x1f1e6)
def is_flag_sequence(values):
if len(values) != 2:
return False
for v in values:
v -= 0x1f1e6
if v < 0 or v > 25:
return False
return True
def is_keycap_sequence(values):
return len(values) == 2 and values[1] == 0x20e3
def get_keycap_text(values):
return '-%c-' % unichr(values[0]) # convert gags on '['
char_map = {
0x1f468: 'M',
0x1f469: 'W',
0x1f466: 'B',
0x1f467: 'G',
0x2764: 'H', # heavy black heart, no var sel
0x1f48b: 'K', # kiss mark
0x200D: '-', # zwj placeholder
0xfe0f: '-', # variation selector placeholder
0x1f441: 'I', # Eye
0x1f5e8: 'W', # 'witness' (left speech bubble)
}
def get_combining_text(values):
chars = []
for v in values:
char = char_map.get(v, None)
if not char:
return None
if char != '-':
chars.append(char)
return ''.join(chars)
if not path.isdir(OUTPUT_DIR):
os.makedirs(OUTPUT_DIR)
with open('sequences.txt', 'r') as f:
for seq in f:
seq = seq.strip()
text = None
values = [int(code, 16) for code in seq.split('_')]
if len(values) == 1:
val = values[0]
text = '%04X' % val # ensure upper case format
elif is_flag_sequence(values):
text = ''.join(regional_to_ascii(cp) for cp in values)
elif has_color_patch(values):
print 'skipping color patch sequence %s' % seq
elif is_keycap_sequence(values):
text = get_keycap_text(values)
else:
text = get_combining_text(values)
if not text:
print 'missing %s' % seq
if text:
if len(text) > 3:
if len(text) == 4:
hi = text[:2]
lo = text[2:]
else:
hi = text[:-3]
lo = text[-3:]
text = '%s\n%s' % (hi, lo)
generate_image('emoji_u%s.png' % seq, text)

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@ -1,6 +1,6 @@
#!/usr/bin/env python
import glob, os, sys
import collections, glob, os, sys
from fontTools import ttx
from fontTools.ttLib.tables import otTables
from png import PNG
@ -10,11 +10,34 @@ sys.path.append(
import add_emoji_gsub
def is_vs(cp):
return cp >= 0xfe00 and cp <= 0xfe0f
def codes_to_string(codes):
if "_" in codes:
pieces = codes.split ("_")
string = "".join ([unichr (int (code, 16)) for code in pieces])
else:
try:
string = unichr (int (codes, 16))
except:
raise ValueError("uh-oh, no unichr for '%s'" % codes)
return string
def glyph_sequence(string):
# sequence of names of glyphs that form a ligature
# variation selectors are stripped
return ["u%04X" % ord(char) for char in string if not is_vs(ord(char))]
def glyph_name(string):
# name of a ligature
# includes variation selectors when present
return "_".join (["u%04X" % ord (char) for char in string])
def add_ligature (font, string):
def add_ligature (font, seq, name):
if 'GSUB' not in font:
ligature_subst = otTables.LigatureSubst()
ligature_subst.ligatures = {}
@ -34,17 +57,27 @@ def add_ligature (font, string):
ligatures = lookup.SubTable[0].ligatures
lig = otTables.Ligature()
lig.CompCount = len(string)
lig.Component = [glyph_name(ch) for ch in string[1:]]
lig.LigGlyph = glyph_name(string)
lig.CompCount = len(seq)
lig.Component = seq[1:]
lig.LigGlyph = name
first = glyph_name(string[0])
first = seq[0]
try:
ligatures[first].append(lig)
except KeyError:
ligatures[first] = [lig]
# Ligating sequences for emoji that already have a defined codepoint,
# to match the sequences for the related emoji with no codepoint.
# The key is the name of the glyph with the codepoint, the value is the
# name of the sequence in filename form.
EXTRA_SEQUENCES = {
'u1F46A': '1F468_200D_1F469_200D_1F466', # MWB
'u1F491': '1F469_200D_2764_FE0F_200D_1F468', # WHM
'u1F48F': '1F469_200D_2764_FE0F_200D_1F48B_200D_1F468', # WHKM
}
if len (sys.argv) < 4:
print >>sys.stderr, """
Usage:
@ -65,23 +98,22 @@ table and the first GSUB lookup (if existing) are modified.
in_file = sys.argv[1]
out_file = sys.argv[2]
img_prefix = sys.argv[3]
img_prefixen = sys.argv[3:]
del sys.argv
font = ttx.TTFont()
font.importXML (in_file)
img_files = {}
glb = "%s*.png" % img_prefix
print "Looking for images matching '%s'." % glb
for img_file in glob.glob (glb):
codes = img_file[len (img_prefix):-4]
if "_" in codes:
pieces = codes.split ("_")
u = "".join ([unichr (int (code, 16)) for code in pieces])
else:
u = unichr (int (codes, 16))
img_files[u] = img_file
for img_prefix in img_prefixen:
glb = "%s*.png" % img_prefix
print "Looking for images matching '%s'." % glb
for img_file in glob.glob (glb):
codes = img_file[len (img_prefix):-4]
u = codes_to_string(codes)
if u in img_files:
print 'overwriting %s with %s' % (img_files[u], imag_file)
img_files[u] = img_file
if not img_files:
raise Exception ("No image files found in '%s'." % glb)
@ -98,20 +130,72 @@ h = font['hmtx'].metrics
img_pairs = img_files.items ()
img_pairs.sort (key=lambda pair: (len (pair[0]), pair[0]))
glyph_names = set()
ligatures = {}
def add_lig_sequence(ligatures, seq, n):
# Assume sequences with ZWJ are emoji 'ligatures' and rtl order
# is also valid. Internal permutations, though, no.
# We associate a sequence with a filename. We can overwrite the
# sequence with a different filename later.
tseq = tuple(seq)
if tseq in ligatures:
print 'lig sequence %s, replace %s with %s' % (
tseq, ligatures[tseq], n)
ligatures[tseq] = n
if 'u200D' in seq:
rev_seq = seq[:]
rev_seq.reverse()
trseq = tuple(rev_seq)
# if trseq in ligatures:
# print 'rev lig sequence %s, replace %s with %s' % (
# trseq, ligatures[trseq], n)
ligatures[trseq] = n
for (u, filename) in img_pairs:
print "Adding glyph for U+%s" % ",".join (["%04X" % ord (char) for char in u])
# print "Adding glyph for U+%s" % ",".join (["%04X" % ord (char) for char in u])
n = glyph_name (u)
glyph_names.add(n)
g.append (n)
for char in u:
if char not in c:
cp = ord(char)
if cp not in c and not is_vs(cp):
name = glyph_name (char)
c[ord (char)] = name
c[cp] = name
if len (u) > 1:
h[name] = [0, 0]
(img_width, img_height) = PNG (filename).get_size ()
advance = int (round ((float (ascent+descent) * img_width / img_height)))
h[n] = [advance, 0]
if len (u) > 1:
add_ligature (font, u)
seq = glyph_sequence(u)
add_lig_sequence(ligatures, seq, n)
for n in EXTRA_SEQUENCES:
if n in glyph_names:
seq = glyph_sequence(codes_to_string(EXTRA_SEQUENCES[n]))
add_lig_sequence(ligatures, seq, n)
else:
print 'extras: no glyph for %s' % n
keyed_ligatures = collections.defaultdict(list)
for k, v in ligatures.iteritems():
first = k[0]
keyed_ligatures[first].append((k, v))
for base in sorted(keyed_ligatures):
pairs = keyed_ligatures[base]
# print 'base %s has %d sequences' % (base, len(pairs))
# Sort longest first, this ensures longer sequences with common prefixes
# are handled before shorter ones. It would be better to have multiple
# lookups, most likely.
pairs.sort(key = lambda pair: (len(pair[0]), pair[0]), reverse=True)
for seq, name in pairs:
# print seq, name
add_ligature(font, seq, name)
font.saveXML (out_file)

View File

@ -20,7 +20,8 @@
import sys, struct, StringIO
from png import PNG
import os
from os import path
def get_glyph_name_from_gsub (string, font, cmap_dict):
ligatures = font['GSUB'].table.LookupList.Lookup[0].SubTable[0].ligatures
@ -83,6 +84,7 @@ class CBDT:
write_func = self.image_write_func (image_format)
for glyph in glyphs:
img_file = glyph_filenames[glyph]
# print 'writing data for glyph %s' % path.basename(img_file)
offset = self.tell ()
write_func (PNG (img_file))
self.glyph_maps.append (GlyphMap (glyph, offset, image_format))
@ -107,7 +109,11 @@ class CBDT:
line_height = (ascent + descent) * y_ppem / float (upem)
line_ascent = ascent * y_ppem / float (upem)
y_bearing = int (round (line_ascent - .5 * (line_height - height)))
# fudge y_bearing if calculations are a bit off
if y_bearing == 128:
y_bearing = 127
advance = width
# print "small glyph metrics h: %d w: %d" % (height, width)
# smallGlyphMetrics
# Type Name
# BYTE height
@ -115,10 +121,14 @@ class CBDT:
# CHAR BearingX
# CHAR BearingY
# BYTE Advance
self.write (struct.pack ("BBbbB",
try:
self.write (struct.pack ("BBbbB",
height, width,
x_bearing, y_bearing,
advance))
except Exception as e:
raise ValueError("%s, h: %d w: %d x: %d y: %d %d a:" % (
e, height, width, x_bearing, y_bearing, advance))
def write_format1 (self, png):
@ -437,8 +447,10 @@ By default they are dropped.
eblc.write_header ()
eblc.start_strikes (len (img_prefixes))
for img_prefix in img_prefixes:
def is_vs(cp):
return cp >= 0xfe00 and cp <= 0xfe0f
for img_prefix in img_prefixes:
print
img_files = {}
@ -448,9 +460,14 @@ By default they are dropped.
codes = img_file[len (img_prefix):-4]
if "_" in codes:
pieces = codes.split ("_")
uchars = "".join ([unichr (int (code, 16)) for code in pieces])
cps = [int(code, 16) for code in pieces]
uchars = "".join ([unichr(cp) for cp in cps if not is_vs(cp)])
else:
uchars = unichr (int (codes, 16))
cp = int(codes, 16)
if is_vs(cp):
print "ignoring unexpected vs input %04x" % cp
continue
uchars = unichr(cp)
img_files[uchars] = img_file
if not img_files:
raise Exception ("No image files found in '%s'." % glb)
@ -460,14 +477,19 @@ By default they are dropped.
advance = width = height = 0
for uchars, img_file in img_files.items ():
if len (uchars) == 1:
glyph_name = unicode_cmap.cmap[ord (uchars)]
try:
glyph_name = unicode_cmap.cmap[ord (uchars)]
except:
print "no cmap entry for %x" % ord(uchars)
raise ValueError("%x" % ord(uchars))
else:
glyph_name = get_glyph_name_from_gsub (uchars, font, unicode_cmap.cmap)
glyph_id = font.getGlyphID (glyph_name)
glyph_imgs[glyph_id] = img_file
if "verbose" in options:
uchars_name = ",".join (["%04X" % ord (char) for char in uchars])
print "Matched U+%s: id=%d name=%s image=%s" % (uchars_name, glyph_id, glyph_name, img_file)
# print "Matched U+%s: id=%d name=%s image=%s" % (
# uchars_name, glyph_id, glyph_name, img_file)
advance += glyph_metrics[glyph_name][0]
w, h = PNG (img_file).get_size ()
@ -476,7 +498,7 @@ By default they are dropped.
glyphs = sorted (glyph_imgs.keys ())
if not glyphs:
raise Exception ("No common characteres found between font and '%s'." % glb)
raise Exception ("No common characters found between font and '%s'." % glb)
print "Embedding images for %d glyphs for this strike." % len (glyphs)
advance, width, height = (div (x, len (glyphs)) for x in (advance, width, height))