def __init__(self,
stream,
page_size,
compress=False,
mark_links=False,
debug=print):
self.stream = HashingStream(stream)
self.compress = compress
self.write_line(PDFVER)
self.write_line(u'%íì¦"'.encode('utf-8'))
creator = ('%s %s [https://calibre-ebook.com]' %
(__appname__, __version__))
self.write_line('%% Created by %s' % creator)
self.objects = IndirectObjects()
self.objects.add(PageTree(page_size))
self.objects.add(Catalog(self.page_tree))
self.current_page = Page(self.page_tree, compress=self.compress)
self.info = Dictionary({
'Creator': String(creator),
'Producer': String(creator),
'CreationDate': utcnow(),
})
self.stroke_opacities, self.fill_opacities = {}, {}
self.font_manager = FontManager(self.objects, self.compress)
self.image_cache = {}
self.pattern_cache, self.shader_cache = {}, {}
self.debug = debug
self.links = Links(self, mark_links, page_size)
i = QImage(1, 1, QImage.Format_ARGB32)
i.fill(qRgba(0, 0, 0, 255))
self.alpha_bit = i.constBits().asstring(4).find(b'\xff')
def set_metadata(self, title=None, author=None, tags=None):
if title:
self.info['Title'] = String(title)
if author:
self.info['Author'] = String(author)
if tags:
self.info['Keywords'] = String(tags)
def set_metadata(self, title=None, author=None, tags=None, mi=None):
if title:
self.info['Title'] = String(title)
if author:
self.info['Author'] = String(author)
if tags:
self.info['Keywords'] = String(tags)
if mi is not None:
self.metadata = self.objects.add(Metadata(mi))
self.catalog.obj['Metadata'] = self.metadata
def __init__(self, metrics, num, objects, compress):
self.metrics, self.compress = metrics, compress
self.is_otf = self.metrics.is_otf
self.subset_tag = str(
re.sub('.', lambda m: codepoint_to_chr(int(m.group())+ord('A')), oct(num).replace('o', '')
)).rjust(6, 'A')
self.font_stream = FontStream(metrics.is_otf, compress=compress)
try:
psname = metrics.postscript_name
except Exception:
psname = uuid4()
self.font_descriptor = Dictionary({
'Type': Name('FontDescriptor'),
'FontName': Name('%s+%s'%(self.subset_tag, psname)),
'Flags': 0b100, # Symbolic font
'FontBBox': Array(metrics.pdf_bbox),
'ItalicAngle': metrics.post.italic_angle,
'Ascent': metrics.pdf_ascent,
'Descent': metrics.pdf_descent,
'CapHeight': metrics.pdf_capheight,
'AvgWidth': metrics.pdf_avg_width,
'StemV': metrics.pdf_stemv,
})
self.descendant_font = Dictionary({
'Type':Name('Font'),
'Subtype':Name('CIDFontType' + ('0' if metrics.is_otf else '2')),
'BaseFont': self.font_descriptor['FontName'],
'FontDescriptor':objects.add(self.font_descriptor),
'CIDSystemInfo':Dictionary({
'Registry':String('Adobe'),
'Ordering':String('Identity'),
'Supplement':0,
}),
})
if not self.is_otf:
self.descendant_font['CIDToGIDMap'] = Name('Identity')
self.font_dict = Dictionary({
'Type':Name('Font'),
'Subtype':Name('Type0'),
'Encoding':Name('Identity-H'),
'BaseFont':self.descendant_font['BaseFont'],
'DescendantFonts':Array([objects.add(self.descendant_font)]),
})
self.used_glyphs = set()
def add_links(self):
for link in self.links:
path, href, frag = link[0]
page, rect = link[1:]
combined_path = os.path.normcase(
os.path.abspath(
os.path.join(os.path.dirname(path),
*unquote(href).split('/'))))
is_local = not href or combined_path in self.anchors
annot = Dictionary({
'Type': Name('Annot'),
'Subtype': Name('Link'),
'Rect': rect,
'Border': Array([0, 0, 0]),
})
if self.mark_links:
annot.update({
'Border': Array([16, 16, 1]),
'C': Array([1.0, 0, 0])
})
if is_local:
path = combined_path if href else path
try:
annot['Dest'] = self.anchors[path][frag]
except KeyError:
try:
annot['Dest'] = self.anchors[path][None]
except KeyError:
pass
else:
url = href + (('#' + frag) if frag else '')
try:
purl = urlparse(url)
except Exception:
self.pdf.debug('Ignoring unparseable URL: %r' % url)
continue
if purl.scheme and purl.scheme != 'file':
action = Dictionary({
'Type': Name('Action'),
'S': Name('URI'),
})
# Do not try to normalize/quote/unquote this URL as if it
# has a query part, it will get corrupted
action['URI'] = String(url)
annot['A'] = action
if 'A' in annot or 'Dest' in annot:
if 'Annots' not in page:
page['Annots'] = Array()
page['Annots'].append(self.pdf.objects.add(annot))
else:
self.pdf.debug(
'Could not find destination for link: %s in file %s' %
(href, path))
def process_toc_item(self, toc, parentref):
path = toc.abspath or None
frag = toc.fragment or None
if path is None:
return
path = os.path.normcase(os.path.abspath(path))
if path not in self.anchors:
return None
a = self.anchors[path]
dest = a.get(frag, a[None])
item = Dictionary({'Parent':parentref, 'Dest':dest,
'Title':String(toc.text or _('Unknown'))})
return self.pdf.objects.add(item)
def add_links(self):
for link in self.links:
path, href, frag = link[0]
page, rect = link[1:]
combined_path = os.path.abspath(
os.path.join(os.path.dirname(path),
*unquote(href).split('/')))
is_local = not href or combined_path in self.anchors
annot = Dictionary({
'Type': Name('Annot'),
'Subtype': Name('Link'),
'Rect': rect,
'Border': Array([0, 0, 0]),
})
if self.mark_links:
annot.update({
'Border': Array([16, 16, 1]),
'C': Array([1.0, 0, 0])
})
if is_local:
path = combined_path if href else path
try:
annot['Dest'] = self.anchors[path][frag]
except KeyError:
try:
annot['Dest'] = self.anchors[path][None]
except KeyError:
pass
else:
url = href + (('#' + frag) if frag else '')
purl = urlparse(url)
if purl.scheme and purl.scheme != 'file':
action = Dictionary({
'Type': Name('Action'),
'S': Name('URI'),
})
parts = (x.encode('utf-8')
if isinstance(x, type(u'')) else x for x in purl)
url = urlunparse(map(quote, map(unquote,
parts))).decode('ascii')
action['URI'] = String(url)
annot['A'] = action
if 'A' in annot or 'Dest' in annot:
if 'Annots' not in page:
page['Annots'] = Array()
page['Annots'].append(self.pdf.objects.add(annot))
else:
self.pdf.debug(
'Could not find destination for link: %s in file %s' %
(href, path))
def end(self):
if self.current_page.getvalue():
self.end_page()
self.font_manager.embed_fonts(self.debug)
inforef = self.objects.add(self.info)
self.links.add_links()
self.objects.pdf_serialize(self.stream)
self.write_line()
startxref = self.objects.write_xref(self.stream)
file_id = String(as_unicode(self.stream.hashobj.hexdigest()))
self.write_line('trailer')
trailer = Dictionary({'Root':self.catalog, 'Size':len(self.objects)+1,
'ID':Array([file_id, file_id]), 'Info':inforef})
serialize(trailer, self.stream)
self.write_line('startxref')
self.write_line('%d'%startxref)
self.stream.write('%%EOF')