def embed_font(self, style):
from calibre.ebooks.oeb.polish.embed import find_matching_font, weight_as_number
ff = font_families_from_style(style)
if not ff:
return
ff = ff[0]
if ff in self.warned or ff == 'inherit':
return
try:
fonts = font_scanner.fonts_for_family(ff)
except NoFonts:
self.log.warn('Failed to find fonts for family:', ff, 'not embedding')
self.warned.add(ff)
return
weight = weight_as_number(style.get('font-weight', '400'))
def do_embed(f):
data = font_scanner.get_font_data(f)
name = f['full_name']
ext = 'otf' if f['is_otf'] else 'ttf'
name = ascii_filename(name).replace(' ', '-').replace('(', '').replace(')', '')
fid, href = self.oeb.manifest.generate(id=u'font', href=u'fonts/%s.%s'%(name, ext))
item = self.oeb.manifest.add(fid, href, guess_type('dummy.'+ext)[0], data=data)
item.unload_data_from_memory()
page_sheet = self.get_page_sheet()
href = page_sheet.relhref(item.href)
css = '''@font-face { font-family: "%s"; font-weight: %s; font-style: %s; font-stretch: %s; src: url(%s) }''' % (
f['font-family'], f['font-weight'], f['font-style'], f['font-stretch'], href)
sheet = self.parser.parseString(css, validate=False)
page_sheet.data.insertRule(sheet.cssRules[0], len(page_sheet.data.cssRules))
return find_font_face_rules(sheet, self.oeb)[0]
for f in fonts:
if f['weight'] == weight and f['font-style'] == style.get('font-style', 'normal') and f['font-stretch'] == style.get('font-stretch', 'normal'):
self.log('Embedding font %s from %s' % (f['full_name'], f['path']))
return do_embed(f)
try:
f = find_matching_font(fonts, style.get('font-weight', 'normal'), style.get('font-style', 'normal'), style.get('font-stretch', 'normal'))
except Exception:
if ff not in self.warned2:
self.log.exception('Failed to find a matching font for family', ff, 'not embedding')
self.warned2.add(ff)
return
self.log('Embedding font %s from %s' % (f['full_name'], f['path']))
return do_embed(f)
def embed_font(self, style):
from calibre.ebooks.oeb.polish.embed import find_matching_font, weight_as_number
ff = font_families_from_style(style)
if not ff:
return
ff = ff[0]
if ff in self.warned or ff == 'inherit':
return
try:
fonts = font_scanner.fonts_for_family(ff)
except NoFonts:
self.log.warn('Failed to find fonts for family:', ff, 'not embedding')
self.warned.add(ff)
return
weight = weight_as_number(style.get('font-weight', '400'))
def do_embed(f):
data = font_scanner.get_font_data(f)
name = f['full_name']
ext = 'otf' if f['is_otf'] else 'ttf'
name = ascii_filename(name).replace(' ', '-').replace('(', '').replace(')', '')
fid, href = self.oeb.manifest.generate(id=u'font', href=u'fonts/%s.%s'%(name, ext))
item = self.oeb.manifest.add(fid, href, guess_type('dummy.'+ext)[0], data=data)
item.unload_data_from_memory()
page_sheet = self.get_page_sheet()
href = page_sheet.relhref(item.href)
css = '''@font-face { font-family: "%s"; font-weight: %s; font-style: %s; font-stretch: %s; src: url(%s) }''' % (
f['font-family'], f['font-weight'], f['font-style'], f['font-stretch'], href)
sheet = self.parser.parseString(css, validate=False)
page_sheet.data.insertRule(sheet.cssRules[0], len(page_sheet.data.cssRules))
return find_font_face_rules(sheet, self.oeb)[0]
for f in fonts:
if f['weight'] == weight and f['font-style'] == style.get('font-style', 'normal') and f['font-stretch'] == style.get('font-stretch', 'normal'):
self.log('Embedding font %s from %s' % (f['full_name'], f['path']))
return do_embed(f)
try:
f = find_matching_font(fonts, style.get('font-weight', 'normal'), style.get('font-style', 'normal'), style.get('font-stretch', 'normal'))
except Exception:
if ff not in self.warned2:
self.log.exception('Failed to find a matching font for family', ff, 'not embedding')
self.warned2.add(ff)
return
self.log('Embedding font %s from %s' % (f['full_name'], f['path']))
return do_embed(f)
def test_fallback_font_matching(self):
def cf(id, weight='normal', style='normal', stretch='normal'):
return {'id':id, 'font-weight':weight, 'font-style':style, 'font-stretch':stretch}
fonts = [cf(1, '500', 'oblique', 'condensed'), cf(2, '300', 'italic', 'normal')]
self.assertEqual(find_matching_font(fonts)['id'], 2)
fonts = [cf(1, '500', 'oblique', 'normal'), cf(2, '300', 'italic', 'normal')]
self.assertEqual(find_matching_font(fonts)['id'], 1)
fonts = [cf(1, '500', 'oblique', 'normal'), cf(2, '200', 'oblique', 'normal')]
self.assertEqual(find_matching_font(fonts)['id'], 1)
fonts = [cf(1, '600', 'oblique', 'normal'), cf(2, '100', 'oblique', 'normal')]
self.assertEqual(find_matching_font(fonts)['id'], 2)
fonts = [cf(1, '600', 'oblique', 'normal'), cf(2, '100', 'oblique', 'normal')]
self.assertEqual(find_matching_font(fonts, '500')['id'], 2)
fonts = [cf(1, '600', 'oblique', 'normal'), cf(2, '100', 'oblique', 'normal')]
self.assertEqual(find_matching_font(fonts, '600')['id'], 1)
