def get_embed_font_info(self, family, failure_critical=True):
efi = []
body_font_family = None
if not family:
return body_font_family, efi
from calibre.utils.fonts.scanner import font_scanner, NoFonts
from calibre.utils.fonts.utils import panose_to_css_generic_family
try:
faces = font_scanner.fonts_for_family(family)
except NoFonts:
msg = (u'No embeddable fonts found for family: %r' % family)
if failure_critical:
raise ValueError(msg)
self.oeb.log.warn(msg)
return body_font_family, efi
if not faces:
msg = (u'No embeddable fonts found for family: %r' % family)
if failure_critical:
raise ValueError(msg)
self.oeb.log.warn(msg)
return body_font_family, efi
for i, font in enumerate(faces):
ext = 'otf' if font['is_otf'] else 'ttf'
fid, href = self.oeb.manifest.generate(
id=u'font',
href=u'fonts/%s.%s' %
(ascii_filename(font['full_name']).replace(u' ', u'-'), ext))
item = self.oeb.manifest.add(fid,
href,
guess_type('dummy.' + ext)[0],
data=font_scanner.get_font_data(font))
item.unload_data_from_memory()
cfont = {
u'font-family': u'"%s"' % font['font-family'],
u'panose-1': u' '.join(map(unicode_type, font['panose'])),
u'src': u'url(%s)' % item.href,
}
if i == 0:
generic_family = panose_to_css_generic_family(font['panose'])
body_font_family = u"'%s',%s" % (font['font-family'],
generic_family)
self.oeb.log(u'Embedding font: %s' % font['font-family'])
for k in (u'font-weight', u'font-style', u'font-stretch'):
if font[k] != u'normal':
cfont[k] = font[k]
rule = '@font-face { %s }' % ('; '.join(
u'%s:%s' % (k, v) for k, v in iteritems(cfont)))
rule = css_parser.parseString(rule)
efi.append(rule)
return body_font_family, efi
def get_embed_font_info(self, family, failure_critical=True):
efi = []
body_font_family = None
if not family:
return body_font_family, efi
from calibre.utils.fonts.scanner import font_scanner, NoFonts
from calibre.utils.fonts.utils import panose_to_css_generic_family
try:
faces = font_scanner.fonts_for_family(family)
except NoFonts:
msg = (u'No embeddable fonts found for family: %r'%family)
if failure_critical:
raise ValueError(msg)
self.oeb.log.warn(msg)
return body_font_family, efi
if not faces:
msg = (u'No embeddable fonts found for family: %r'%family)
if failure_critical:
raise ValueError(msg)
self.oeb.log.warn(msg)
return body_font_family, efi
for i, font in enumerate(faces):
ext = 'otf' if font['is_otf'] else 'ttf'
fid, href = self.oeb.manifest.generate(id=u'font',
href=u'fonts/%s.%s'%(ascii_filename(font['full_name']).replace(u' ', u'-'), ext))
item = self.oeb.manifest.add(fid, href,
guess_type('dummy.'+ext)[0],
data=font_scanner.get_font_data(font))
item.unload_data_from_memory()
cfont = {
u'font-family':u'"%s"'%font['font-family'],
u'panose-1': u' '.join(map(unicode_type, font['panose'])),
u'src': u'url(%s)'%item.href,
}
if i == 0:
generic_family = panose_to_css_generic_family(font['panose'])
body_font_family = u"'%s',%s"%(font['font-family'], generic_family)
self.oeb.log(u'Embedding font: %s'%font['font-family'])
for k in (u'font-weight', u'font-style', u'font-stretch'):
if font[k] != u'normal':
cfont[k] = font[k]
rule = '@font-face { %s }'%('; '.join(u'%s:%s'%(k, v) for k, v in
iteritems(cfont)))
rule = css_parser.parseString(rule)
efi.append(rule)
return body_font_family, efi
def __init__(self, elem, embed_relationships, XPath, get):
self.name = self.family_name = get(elem, 'w:name')
self.alt_names = tuple(
get(x, 'w:val') for x in XPath('./w:altName')(elem))
if self.alt_names and not has_system_fonts(self.name):
for x in self.alt_names:
if has_system_fonts(x):
self.family_name = x
break
self.embedded = {}
for x in ('Regular', 'Bold', 'Italic', 'BoldItalic'):
for y in XPath('./w:embed%s[@r:id]' % x)(elem):
rid = get(y, 'r:id')
key = get(y, 'w:fontKey')
subsetted = get(y, 'w:subsetted') in {'1', 'true', 'on'}
if rid in embed_relationships:
self.embedded[x] = Embed(embed_relationships[rid], key,
subsetted)
self.generic_family = 'auto'
for x in XPath('./w:family[@w:val]')(elem):
self.generic_family = get(x, 'w:val', 'auto')
ntt = binary_property(elem, 'notTrueType', XPath, get)
self.is_ttf = ntt is inherit or not ntt
self.panose1 = None
self.panose_name = None
for x in XPath('./w:panose1[@w:val]')(elem):
try:
v = get(x, 'w:val')
v = tuple(int(v[i:i + 2], 16) for i in range(0, len(v), 2))
except (TypeError, ValueError, IndexError):
pass
else:
self.panose1 = v
self.panose_name = panose_to_css_generic_family(v)
self.css_generic_family = {
'roman': 'serif',
'swiss': 'sans-serif',
'modern': 'monospace',
'decorative': 'fantasy',
'script': 'cursive'
}.get(self.generic_family, None)
self.css_generic_family = self.css_generic_family or self.panose_name or 'serif'
def find_font_for_text(self,
text,
allowed_families={'serif', 'sans-serif'},
preferred_families=('serif', 'sans-serif',
'monospace', 'cursive',
'fantasy')):
'''
Find a font on the system capable of rendering the given text.
Returns a font family (as given by fonts_for_family()) that has a
"normal" font and that can render the supplied text. If no such font
exists, returns None.
:return: (family name, faces) or None, None
'''
from calibre.utils.fonts.utils import (supports_text,
panose_to_css_generic_family,
get_printable_characters)
if not isinstance(text, unicode_type):
raise TypeError(u'%r is not unicode' % text)
text = get_printable_characters(text)
found = {}
def filter_faces(font):
try:
raw = self.get_font_data(font)
return supports_text(raw, text)
except:
pass
return False
for family in self.find_font_families():
faces = list(filter(filter_faces, self.fonts_for_family(family)))
if not faces:
continue
generic_family = panose_to_css_generic_family(faces[0]['panose'])
if generic_family in allowed_families or generic_family == preferred_families[
0]:
return (family, faces)
elif generic_family not in found:
found[generic_family] = (family, faces)
for f in preferred_families:
if f in found:
return found[f]
return None, None
def get_embed_font_info(self, family, failure_critical=True):
efi = []
body_font_family = None
if not family:
return body_font_family, efi
from calibre.utils.fonts.scanner import font_scanner
from calibre.utils.fonts.utils import panose_to_css_generic_family
faces = font_scanner.fonts_for_family(family)
if not faces:
msg = u"No embeddable fonts found for family: %r" % self.opts.embed_font_family
if failure_critical:
raise ValueError(msg)
self.oeb.log.warn(msg)
return body_font_family, efi
for i, font in enumerate(faces):
ext = "otf" if font["is_otf"] else "ttf"
fid, href = self.oeb.manifest.generate(
id=u"font", href=u"fonts/%s.%s" % (ascii_filename(font["full_name"]).replace(u" ", u"-"), ext)
)
item = self.oeb.manifest.add(
fid, href, guess_type("dummy." + ext)[0], data=font_scanner.get_font_data(font)
)
item.unload_data_from_memory()
cfont = {
u"font-family": u'"%s"' % font["font-family"],
u"panose-1": u" ".join(map(unicode, font["panose"])),
u"src": u"url(%s)" % item.href,
}
if i == 0:
generic_family = panose_to_css_generic_family(font["panose"])
body_font_family = u"'%s',%s" % (font["font-family"], generic_family)
self.oeb.log(u"Embedding font: %s" % font["font-family"])
for k in (u"font-weight", u"font-style", u"font-stretch"):
if font[k] != u"normal":
cfont[k] = font[k]
rule = "@font-face { %s }" % ("; ".join(u"%s:%s" % (k, v) for k, v in cfont.iteritems()))
rule = cssutils.parseString(rule)
efi.append(rule)
return body_font_family, efi
def find_font_for_text(
self,
text,
allowed_families={"serif", "sans-serif"},
preferred_families=("serif", "sans-serif", "monospace", "cursive", "fantasy"),
):
"""
Find a font on the system capable of rendering the given text.
Returns a font family (as given by fonts_for_family()) that has a
"normal" font and that can render the supplied text. If no such font
exists, returns None.
:return: (family name, faces) or None, None
"""
from calibre.utils.fonts.utils import supports_text, panose_to_css_generic_family, get_printable_characters
if not isinstance(text, unicode):
raise TypeError("%r is not unicode" % text)
text = get_printable_characters(text)
found = {}
def filter_faces(font):
try:
raw = self.get_font_data(font)
return supports_text(raw, text)
except:
pass
return False
for family in self.find_font_families():
faces = filter(filter_faces, self.fonts_for_family(family))
if not faces:
continue
generic_family = panose_to_css_generic_family(faces[0]["panose"])
if generic_family in allowed_families or generic_family == preferred_families[0]:
return (family, faces)
elif generic_family not in found:
found[generic_family] = (family, faces)
for f in preferred_families:
if f in found:
return found[f]
return None, None
def __init__(self, elem, embed_relationships, XPath, get):
self.name = self.family_name = get(elem, 'w:name')
self.alt_names = tuple(get(x, 'w:val') for x in XPath('./w:altName')(elem))
if self.alt_names and not has_system_fonts(self.name):
for x in self.alt_names:
if has_system_fonts(x):
self.family_name = x
break
self.embedded = {}
for x in ('Regular', 'Bold', 'Italic', 'BoldItalic'):
for y in XPath('./w:embed%s[@r:id]' % x)(elem):
rid = get(y, 'r:id')
key = get(y, 'w:fontKey')
subsetted = get(y, 'w:subsetted') in {'1', 'true', 'on'}
if rid in embed_relationships:
self.embedded[x] = Embed(embed_relationships[rid], key, subsetted)
self.generic_family = 'auto'
for x in XPath('./w:family[@w:val]')(elem):
self.generic_family = get(x, 'w:val', 'auto')
ntt = binary_property(elem, 'notTrueType', XPath, get)
self.is_ttf = ntt is inherit or not ntt
self.panose1 = None
self.panose_name = None
for x in XPath('./w:panose1[@w:val]')(elem):
try:
v = get(x, 'w:val')
v = tuple(int(v[i:i+2], 16) for i in xrange(0, len(v), 2))
except (TypeError, ValueError, IndexError):
pass
else:
self.panose1 = v
self.panose_name = panose_to_css_generic_family(v)
self.css_generic_family = {'roman':'serif', 'swiss':'sans-serif', 'modern':'monospace',
'decorative':'fantasy', 'script':'cursive'}.get(self.generic_family, None)
self.css_generic_family = self.css_generic_family or self.panose_name or 'serif'
