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Support .ttc files #6

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Support .ttc files #6

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163 changes: 86 additions & 77 deletions scripts/powerline-fontpatcher
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Original file line number Diff line number Diff line change
Expand Up @@ -28,88 +28,97 @@ args = parser.parse_args()
class FontPatcher(object):
def __init__(self, source_font, target_fonts, rename_font=True):
self.source_font = fontforge.open(source_font.name)
self.target_fonts = (fontforge.open(target_font.name) for target_font in target_fonts)
self.target_fonts = ((fontforge.open("{}({})".format(target_font.name, font_name)) for font_name in fontforge.fontsInFile(target_font.name)) for target_font in target_fonts)
self.rename_font = rename_font

def patch(self):
for target_font in self.target_fonts:
source_font = self.source_font
target_font_em_original = target_font.em
target_font.em = 2048
target_font.encoding = 'ISO10646'

# Rename font
if self.rename_font:
target_font.familyname += ' for Powerline'
target_font.fullname += ' for Powerline'
fontname, style = re.match("^([^-]*)(?:(-.*))?$", target_font.fontname).groups()
target_font.fontname = fontname + 'ForPowerline'
if style is not None:
target_font.fontname += style
target_font.appendSFNTName('English (US)', 'Preferred Family', target_font.familyname)
target_font.appendSFNTName('English (US)', 'Compatible Full', target_font.fullname)

source_bb = source_font['block'].boundingBox()
target_bb = [0, 0, 0, 0]
target_font_width = 0

# Find the biggest char width and height in the Latin-1 extended range and the box drawing range
# This isn't ideal, but it works fairly well - some fonts may need tuning after patching
for cp in range(0x00, 0x17f) + range(0x2500, 0x2600):
try:
bbox = target_font[cp].boundingBox()
except TypeError:
continue
if not target_font_width:
target_font_width = target_font[cp].width
if bbox[0] < target_bb[0]:
target_bb[0] = bbox[0]
if bbox[1] < target_bb[1]:
target_bb[1] = bbox[1]
if bbox[2] > target_bb[2]:
target_bb[2] = bbox[2]
if bbox[3] > target_bb[3]:
target_bb[3] = bbox[3]

# Find source and target size difference for scaling
x_ratio = (target_bb[2] - target_bb[0]) / (source_bb[2] - source_bb[0])
y_ratio = (target_bb[3] - target_bb[1]) / (source_bb[3] - source_bb[1])
scale = psMat.scale(x_ratio, y_ratio)

# Find source and target midpoints for translating
x_diff = target_bb[0] - source_bb[0]
y_diff = target_bb[1] - source_bb[1]
translate = psMat.translate(x_diff, y_diff)
transform = psMat.compose(scale, translate)

# Create new glyphs from symbol font
for source_glyph in source_font.glyphs():
if source_glyph == source_font['block']:
# Skip the symbol font block glyph
continue

# Select and copy symbol from its encoding point
source_font.selection.select(source_glyph.encoding)
source_font.copy()

# Select and paste symbol to its unicode code point
target_font.selection.select(source_glyph.unicode)
target_font.paste()

# Transform the glyph
target_font.transform(transform)

# Reset the font's glyph width so it's still considered monospaced
target_font[source_glyph.unicode].width = target_font_width

target_font.em = target_font_em_original
for fonts in self.target_fonts:
new_fonts = []
for target_font in fonts:
source_font = self.source_font
target_font_em_original = target_font.em
target_font.em = 2048
target_font.encoding = 'ISO10646'

# Rename font
if self.rename_font:
target_font.familyname += ' for Powerline'
target_font.fullname += ' for Powerline'
fontname, style = re.match("^([^-]*)(?:(-.*))?$", target_font.fontname).groups()
target_font.fontname = fontname + 'ForPowerline'
if style is not None:
target_font.fontname += style
target_font.appendSFNTName('English (US)', 'Preferred Family', target_font.familyname)
target_font.appendSFNTName('English (US)', 'Compatible Full', target_font.fullname)

source_bb = source_font['block'].boundingBox()
target_bb = [0, 0, 0, 0]
target_font_width = 0

# Find the biggest char width and height in the Latin-1 extended range and the box drawing range
# This isn't ideal, but it works fairly well - some fonts may need tuning after patching
for cp in range(0x00, 0x17f) + range(0x2500, 0x2600):
try:
bbox = target_font[cp].boundingBox()
except TypeError:
continue
if not target_font_width:
target_font_width = target_font[cp].width
if bbox[0] < target_bb[0]:
target_bb[0] = bbox[0]
if bbox[1] < target_bb[1]:
target_bb[1] = bbox[1]
if bbox[2] > target_bb[2]:
target_bb[2] = bbox[2]
if bbox[3] > target_bb[3]:
target_bb[3] = bbox[3]

# Find source and target size difference for scaling
x_ratio = (target_bb[2] - target_bb[0]) / (source_bb[2] - source_bb[0])
y_ratio = (target_bb[3] - target_bb[1]) / (source_bb[3] - source_bb[1])
scale = psMat.scale(x_ratio, y_ratio)

# Find source and target midpoints for translating
x_diff = target_bb[0] - source_bb[0]
y_diff = target_bb[1] - source_bb[1]
translate = psMat.translate(x_diff, y_diff)
transform = psMat.compose(scale, translate)

# Create new glyphs from symbol font
for source_glyph in source_font.glyphs():
if source_glyph == source_font['block']:
# Skip the symbol font block glyph
continue

# Select and copy symbol from its encoding point
source_font.selection.select(source_glyph.encoding)
source_font.copy()

# Select and paste symbol to its unicode code point
target_font.selection.select(source_glyph.unicode)
target_font.paste()

# Transform the glyph
target_font.transform(transform)

# Reset the font's glyph width so it's still considered monospaced
target_font[source_glyph.unicode].width = target_font_width

target_font.em = target_font_em_original

new_fonts.append(target_font)

# Generate patched font
extension = os.path.splitext(target_font.path)[1]
if extension.lower() not in ['.ttf', '.otf']:
# Default to OpenType if input is not TrueType/OpenType
extension = '.otf'
target_font.generate('{0}{1}'.format(target_font.fullname, extension))
if len(new_fonts) > 1:
# assume the damn thing is a .ttc
new_fonts[0].generateTtc('{0}.ttc'.format(new_fonts[0].familyname), tuple(new_fonts[1:]))
else:
target_font = new_fonts[0]
extension = os.path.splitext(target_font.path)[1]
if extension.lower() not in ['.ttf', '.otf']:
# Default to OpenType if input is not TrueType/OpenType
extension = '.otf'
target_font.generate('{0}{1}'.format(target_font.fullname, extension))

fp = FontPatcher(args.source_font, args.target_fonts, args.rename_font)
fp.patch()