def drawTextItem(self, point, text_item):
# return super(PdfEngine, self).drawTextItem(point, text_item)
self.apply_graphics_state()
gi = GlyphInfo(*self.qt_hack.get_glyphs(point, text_item))
if not gi.indices:
return
metrics = self.fonts.get(gi.name)
if metrics is None:
from calibre.utils.fonts.utils import get_all_font_names
try:
names = get_all_font_names(gi.name, True)
names = ' '.join('%s=%s'%(k, names[k]) for k in sorted(names))
except Exception:
names = 'Unknown'
self.debug('Loading font: %s' % names)
try:
self.fonts[gi.name] = metrics = self.create_sfnt(text_item)
except UnsupportedFont:
return super(PdfEngine, self).drawTextItem(point, text_item)
for glyph_id in gi.indices:
try:
metrics.glyph_map[glyph_id] = metrics.full_glyph_map[glyph_id]
except (KeyError, ValueError):
pass
glyphs = []
last_x = last_y = 0
for glyph_index, (x, y) in zip(gi.indices, gi.positions):
glyphs.append((x-last_x, last_y - y, glyph_index))
last_x, last_y = x, y
self.pdf.draw_glyph_run([gi.stretch, 0, 0, -1, 0, 0], gi.size, metrics,
glyphs)
def drawTextItem(self, point, text_item):
self.content_written_to_current_page = 'drawTextItem'
# return super(PdfEngine, self).drawTextItem(point, text_item)
self.apply_graphics_state()
gi = GlyphInfo(*self.qt_hack.get_glyphs(point, text_item))
if not gi.indices:
return
metrics = self.fonts.get(gi.name)
if metrics is None:
from calibre.utils.fonts.utils import get_all_font_names
try:
names = get_all_font_names(gi.name, True)
names = ' '.join('%s=%s'%(k, names[k]) for k in sorted(names))
except Exception:
names = 'Unknown'
self.debug('Loading font: %s' % names)
try:
self.fonts[gi.name] = metrics = self.create_sfnt(text_item)
except UnsupportedFont:
return super(PdfEngine, self).drawTextItem(point, text_item)
for glyph_id in gi.indices:
try:
metrics.glyph_map[glyph_id] = metrics.full_glyph_map[glyph_id]
except (KeyError, ValueError):
pass
glyphs = []
last_x = last_y = 0
for glyph_index, (x, y) in zip(gi.indices, gi.positions):
glyphs.append((x-last_x, last_y - y, glyph_index))
last_x, last_y = x, y
self.pdf.draw_glyph_run([gi.stretch, 0, 0, -1, 0, 0], gi.size, metrics,
glyphs)
def __init__(self, sfnt):
for table in (b'head', b'hhea', b'hmtx', b'cmap', b'OS/2', b'post',
b'name'):
if table not in sfnt:
raise UnsupportedFont('This font has no %s table'%table)
self.sfnt = sfnt
self.head = self.sfnt[b'head']
hhea = self.sfnt[b'hhea']
hhea.read_data(self.sfnt[b'hmtx'])
self.ascent = hhea.ascender
self.descent = hhea.descender
self.bbox = (self.head.x_min, self.head.y_min, self.head.x_max,
self.head.y_max)
self._advance_widths = hhea.advance_widths
self.cmap = self.sfnt[b'cmap']
self.units_per_em = self.head.units_per_em
self.os2 = self.sfnt[b'OS/2']
self.os2.read_data()
self.post = self.sfnt[b'post']
self.post.read_data()
self.names = get_all_font_names(self.sfnt[b'name'].raw, raw_is_table=True)
self.is_otf = 'CFF ' in self.sfnt.tables
self._sig = hash(self.sfnt[b'name'].raw)
# Metrics for embedding in PDF
pdf_scale = self.pdf_scale = lambda x:int(round(x*1000./self.units_per_em))
self.pdf_ascent, self.pdf_descent = map(pdf_scale,
(self.os2.typo_ascender, self.os2.typo_descender))
self.pdf_bbox = tuple(map(pdf_scale, self.bbox))
self.pdf_capheight = pdf_scale(getattr(self.os2, 'cap_height',
self.os2.typo_ascender))
self.pdf_avg_width = pdf_scale(self.os2.average_char_width)
self.pdf_stemv = 50 + int((self.os2.weight_class / 65.0) ** 2)
def __init__(self, sfnt):
self.sfnt = sfnt
self.head = self.sfnt[b"head"]
hhea = self.sfnt[b"hhea"]
hhea.read_data(self.sfnt[b"hmtx"])
self.ascent = hhea.ascender
self.descent = hhea.descender
self.bbox = (self.head.x_min, self.head.y_min, self.head.x_max, self.head.y_max)
self._advance_widths = hhea.advance_widths
self.cmap = self.sfnt[b"cmap"]
self.units_per_em = self.head.units_per_em
self.os2 = self.sfnt[b"OS/2"]
self.os2.read_data()
self.post = self.sfnt[b"post"]
self.post.read_data()
self.names = get_all_font_names(self.sfnt[b"name"].raw, raw_is_table=True)
self.is_otf = "CFF " in self.sfnt.tables
self._sig = hash(self.sfnt[b"name"].raw)
# Metrics for embedding in PDF
pdf_scale = self.pdf_scale = lambda x: int(round(x * 1000.0 / self.units_per_em))
self.pdf_ascent, self.pdf_descent = map(pdf_scale, (self.os2.typo_ascender, self.os2.typo_descender))
self.pdf_bbox = tuple(map(pdf_scale, self.bbox))
self.pdf_capheight = pdf_scale(getattr(self.os2, "cap_height", self.os2.typo_ascender))
self.pdf_avg_width = pdf_scale(self.os2.average_char_width)
self.pdf_stemv = 50 + int((self.os2.weight_class / 65.0) ** 2)
def __init__(self, sfnt):
for table in (b'head', b'hhea', b'hmtx', b'cmap', b'OS/2', b'post',
b'name'):
if table not in sfnt:
raise UnsupportedFont('This font has no %s table'%table)
self.sfnt = sfnt
self.head = self.sfnt[b'head']
hhea = self.sfnt[b'hhea']
hhea.read_data(self.sfnt[b'hmtx'])
self.ascent = hhea.ascender
self.descent = hhea.descender
self.bbox = (self.head.x_min, self.head.y_min, self.head.x_max,
self.head.y_max)
self._advance_widths = hhea.advance_widths
self.cmap = self.sfnt[b'cmap']
self.units_per_em = self.head.units_per_em
self.os2 = self.sfnt[b'OS/2']
self.os2.read_data()
self.post = self.sfnt[b'post']
self.post.read_data()
self.names = get_all_font_names(self.sfnt[b'name'].raw, raw_is_table=True)
self.is_otf = 'CFF ' in self.sfnt.tables
self._sig = hash(self.sfnt[b'name'].raw)
# Metrics for embedding in PDF
pdf_scale = self.pdf_scale = lambda x:int(round(x*1000./self.units_per_em))
self.pdf_ascent, self.pdf_descent = map(pdf_scale,
(self.os2.typo_ascender, self.os2.typo_descender))
self.pdf_bbox = tuple(map(pdf_scale, self.bbox))
self.pdf_capheight = pdf_scale(getattr(self.os2, 'cap_height',
self.os2.typo_ascender))
self.pdf_avg_width = pdf_scale(self.os2.average_char_width)
self.pdf_stemv = 50 + int((self.os2.weight_class / 65.0) ** 2)
def drawTextItem(self, point, text_item):
# return super(PdfEngine, self).drawTextItem(point, text_item)
self.apply_graphics_state()
gi = GlyphInfo(*self.qt_hack.get_glyphs(point, text_item))
if not gi.indices:
return
metrics = self.fonts.get(gi.name)
if metrics is None:
from calibre.utils.fonts.utils import get_all_font_names
try:
names = get_all_font_names(gi.name, True)
names = ' '.join('%s=%s' % (k, names[k])
for k in sorted(names))
except Exception:
names = 'Unknown'
self.debug('Loading font: %s' % names)
try:
self.fonts[gi.name] = metrics = self.create_sfnt(text_item)
except UnsupportedFont:
self.debug(
'Failed to load font: %s, drawing text as outlines...' %
names)
return super(PdfEngine, self).drawTextItem(point, text_item)
indices, positions = [], []
ignore_glyphs = metrics.ignore_glyphs
for glyph_id, gpos in zip(gi.indices, gi.positions):
if glyph_id not in ignore_glyphs:
indices.append(glyph_id), positions.append(gpos)
for glyph_id in indices:
try:
metrics.glyph_map[glyph_id] = metrics.full_glyph_map[glyph_id]
except (KeyError, ValueError):
pass
glyphs = []
last_x = last_y = 0
for glyph_index, (x, y) in zip(indices, positions):
glyphs.append((x - last_x, last_y - y, glyph_index))
last_x, last_y = x, y
if not self.content_written_to_current_page:
dy = self.graphics.current_state.transform.dy()
ypositions = [y + dy for x, y in positions]
miny = min(ypositions or (0, ))
maxy = max(ypositions or (self.pixel_height, ))
page_top = self.header_height if self.has_headers else 0
page_bottom = self.pixel_height - (self.footer_height
if self.has_footers else 0)
if page_top <= miny <= page_bottom or page_top <= maxy <= page_bottom:
self.content_written_to_current_page = 'drawTextItem'
else:
self.debug(
'Text in header/footer: miny=%s maxy=%s page_top=%s page_bottom=%s'
% (miny, maxy, page_top, page_bottom))
self.pdf.draw_glyph_run([gi.stretch, 0, 0, -1, 0, 0], gi.size, metrics,
glyphs)
def check_fonts(container):
font_map = {}
errors = []
for name, mt in container.mime_map.iteritems():
if mt in OEB_FONTS:
raw = container.raw_data(name)
try:
name_map = get_all_font_names(raw)
except Exception as e:
errors.append(InvalidFont(_('Not a valid font: %s') % e, name))
continue
font_map[name] = name_map.get('family_name', None) or name_map.get(
'preferred_family_name', None) or name_map.get(
'wws_family_name', None)
try:
embeddable, fs_type = is_font_embeddable(raw)
except UnsupportedFont:
embeddable = True
if not embeddable:
errors.append(NotEmbeddable(name, fs_type))
sheets = []
for name, mt in container.mime_map.iteritems():
if mt in OEB_STYLES:
try:
sheets.append((name, container.parsed(name), None))
except Exception:
pass # Could not parse, ignore
elif mt in OEB_DOCS:
for style in container.parsed(name).xpath(
'//*[local-name()="style"]'):
if style.get('type', 'text/css') == 'text/css' and style.text:
sheets.append((name, container.parse_css(style.text),
style.sourceline))
for name, sheet, line_offset in sheets:
for rule in sheet.cssRules.rulesOfType(CSSRule.FONT_FACE_RULE):
src = rule.style.getPropertyCSSValue('src')
if src is not None and src.length > 0:
href = getattr(src.item(0), 'uri', None)
if href is not None:
fname = container.href_to_name(href, name)
font_name = font_map.get(fname, None)
if font_name is None:
continue
families = parse_font_family(
rule.style.getPropertyValue('font-family'))
if families:
if families[0] != font_name:
errors.append(
FontAliasing(font_name, families[0], name,
line_offset))
return errors
def check_fonts(container):
font_map = {}
errors = []
for name, mt in container.mime_map.iteritems():
if mt in OEB_FONTS:
raw = container.raw_data(name)
if mt == guess_type('a.woff'):
try:
raw = woff.from_woff(raw)
except Exception as e:
errors.append(
InvalidFont(_('Not a valid WOFF font: %s') % e, name))
continue
try:
name_map = get_all_font_names(raw)
except Exception as e:
errors.append(InvalidFont(_('Not a valid font: %s') % e, name))
continue
font_map[name] = name_map.get('family_name', None) or name_map.get(
'preferred_family_name', None) or name_map.get(
'wws_family_name', None)
sheets = []
for name, mt in container.mime_map.iteritems():
if mt in OEB_STYLES:
sheets.append((name, container.parsed(name), None))
elif mt in OEB_DOCS:
for style in container.parsed(name).xpath(
'//*[local-name()="style"]'):
if style.get('type', 'text/css') == 'text/css':
sheets.append((name, container.parse_css(style.text),
style.sourceline))
for name, sheet, line_offset in sheets:
for rule in sheet.cssRules.rulesOfType(CSSRule.FONT_FACE_RULE):
src = rule.style.getPropertyCSSValue('src')
if src is not None and src.length > 0:
href = getattr(src.item(0), 'uri', None)
if href is not None:
fname = container.href_to_name(href, name)
font_name = font_map.get(fname, None)
if font_name is None:
continue
ff = rule.style.getPropertyCSSValue('font-family')
if ff is not None and ff.length > 0:
ff = getattr(ff.item(0), 'value', None)
if ff is not None and ff != font_name:
errors.append(
FontAliasing(font_name, ff, name, line_offset))
return errors
def drawTextItem(self, point, text_item):
# return super(PdfEngine, self).drawTextItem(point, text_item)
self.apply_graphics_state()
gi = GlyphInfo(*self.qt_hack.get_glyphs(point, text_item))
if not gi.indices:
return
metrics = self.fonts.get(gi.name)
if metrics is None:
from calibre.utils.fonts.utils import get_all_font_names
try:
names = get_all_font_names(gi.name, True)
names = ' '.join('%s=%s'%(k, names[k]) for k in sorted(names))
except Exception:
names = 'Unknown'
self.debug('Loading font: %s' % names)
try:
self.fonts[gi.name] = metrics = self.create_sfnt(text_item)
except UnsupportedFont:
self.debug('Failed to load font: %s, drawing text as outlines...' % names)
return super(PdfEngine, self).drawTextItem(point, text_item)
indices, positions = [], []
ignore_glyphs = metrics.ignore_glyphs
for glyph_id, gpos in zip(gi.indices, gi.positions):
if glyph_id not in ignore_glyphs:
indices.append(glyph_id), positions.append(gpos)
for glyph_id in indices:
try:
metrics.glyph_map[glyph_id] = metrics.full_glyph_map[glyph_id]
except (KeyError, ValueError):
pass
glyphs = []
last_x = last_y = 0
for glyph_index, (x, y) in zip(indices, positions):
glyphs.append((x-last_x, last_y - y, glyph_index))
last_x, last_y = x, y
if not self.content_written_to_current_page:
dy = self.graphics.current_state.transform.dy()
ypositions = [y + dy for x, y in positions]
miny = min(ypositions or (0,))
maxy = max(ypositions or (self.pixel_height,))
page_top = self.header_height if self.has_headers else 0
page_bottom = self.pixel_height - (self.footer_height if self.has_footers else 0)
if page_top <= miny <= page_bottom or page_top <= maxy <= page_bottom:
self.content_written_to_current_page = 'drawTextItem'
else:
self.debug('Text in header/footer: miny=%s maxy=%s page_top=%s page_bottom=%s'% (
miny, maxy, page_top, page_bottom))
self.pdf.draw_glyph_run([gi.stretch, 0, 0, -1, 0, 0], gi.size, metrics,
glyphs)
def check_fonts(container):
font_map = {}
errors = []
for name, mt in container.mime_map.iteritems():
if mt in OEB_FONTS:
raw = container.raw_data(name)
if mt == guess_type('a.woff'):
try:
raw = woff.from_woff(raw)
except Exception as e:
errors.append(InvalidFont(_('Not a valid WOFF font: %s') % e, name))
continue
try:
name_map = get_all_font_names(raw)
except Exception as e:
errors.append(InvalidFont(_('Not a valid font: %s') % e, name))
continue
font_map[name] = name_map.get('family_name', None) or name_map.get('preferred_family_name', None) or name_map.get('wws_family_name', None)
sheets = []
for name, mt in container.mime_map.iteritems():
if mt in OEB_STYLES:
try:
sheets.append((name, container.parsed(name), None))
except Exception:
pass # Could not parse, ignore
elif mt in OEB_DOCS:
for style in container.parsed(name).xpath('//*[local-name()="style"]'):
if style.get('type', 'text/css') == 'text/css' and style.text:
sheets.append((name, container.parse_css(style.text), style.sourceline))
for name, sheet, line_offset in sheets:
for rule in sheet.cssRules.rulesOfType(CSSRule.FONT_FACE_RULE):
src = rule.style.getPropertyCSSValue('src')
if src is not None and src.length > 0:
href = getattr(src.item(0), 'uri', None)
if href is not None:
fname = container.href_to_name(href, name)
font_name = font_map.get(fname, None)
if font_name is None:
continue
ff = rule.style.getPropertyCSSValue('font-family')
if ff is not None and ff.length > 0:
ff = getattr(ff.item(0), 'value', None)
if ff is not None and ff != font_name:
errors.append(FontAliasing(font_name, ff, name, line_offset))
return errors
def check_fonts(container):
font_map = {}
errors = []
for name, mt in iteritems(container.mime_map):
if mt in OEB_FONTS:
raw = container.raw_data(name)
try:
name_map = get_all_font_names(raw)
except Exception as e:
errors.append(InvalidFont(_('Not a valid font: %s') % e, name))
continue
font_map[name] = name_map.get('family_name', None) or name_map.get('preferred_family_name', None) or name_map.get('wws_family_name', None)
try:
embeddable, fs_type = is_font_embeddable(raw)
except UnsupportedFont:
embeddable = True
if not embeddable:
errors.append(NotEmbeddable(name, fs_type))
sheets = []
for name, mt in iteritems(container.mime_map):
if mt in OEB_STYLES:
try:
sheets.append((name, container.parsed(name), None))
except Exception:
pass # Could not parse, ignore
elif mt in OEB_DOCS:
for style in container.parsed(name).xpath('//*[local-name()="style"]'):
if style.get('type', 'text/css') == 'text/css' and style.text:
sheets.append((name, container.parse_css(style.text), style.sourceline))
for name, sheet, line_offset in sheets:
for rule in sheet.cssRules.rulesOfType(CSSRule.FONT_FACE_RULE):
src = rule.style.getPropertyCSSValue('src')
if src is not None and src.length > 0:
href = getattr(src.item(0), 'uri', None)
if href is not None:
fname = container.href_to_name(href, name)
font_name = font_map.get(fname, None)
if font_name is None:
continue
families = parse_font_family(rule.style.getPropertyValue('font-family'))
if families:
if families[0] != font_name:
errors.append(FontAliasing(font_name, families[0], name, line_offset))
return errors
