def __init__(self, opts, log, cover_data=None, toc=None):
from calibre.gui2 import must_use_qt
from calibre.utils.podofo import get_podofo
must_use_qt()
QObject.__init__(self)
self.logger = self.log = log
self.podofo = get_podofo()
self.doc = self.podofo.PDFDoc()
self.loop = QEventLoop()
self.view = QWebView()
self.page = Page(opts, self.log)
self.view.setPage(self.page)
self.view.setRenderHints(QPainter.Antialiasing|QPainter.TextAntialiasing|QPainter.SmoothPixmapTransform)
self.view.loadFinished.connect(self._render_html,
type=Qt.QueuedConnection)
for x in (Qt.Horizontal, Qt.Vertical):
self.view.page().mainFrame().setScrollBarPolicy(x,
Qt.ScrollBarAlwaysOff)
self.render_queue = []
self.combine_queue = []
self.tmp_path = PersistentTemporaryDirectory(u'_pdf_output_parts')
self.opts = opts
self.cover_data = cover_data
self.paged_js = None
self.toc = toc
def print_finished(self, pdf_data):
with open(OUTPUT, 'wb') as f:
f.write(pdf_data)
QApplication.instance().exit(0)
podofo = get_podofo()
doc = podofo.PDFDoc()
doc.load(pdf_data)
def __init__(self, opts, log, cover_data=None, toc=None):
from calibre.gui2 import must_use_qt
from calibre.utils.podofo import get_podofo
must_use_qt()
QObject.__init__(self)
self.logger = self.log = log
self.podofo = get_podofo()
self.doc = self.podofo.PDFDoc()
self.loop = QEventLoop()
self.view = QWebView()
self.page = Page(opts, self.log)
self.view.setPage(self.page)
self.view.setRenderHints(QPainter.Antialiasing
| QPainter.TextAntialiasing
| QPainter.SmoothPixmapTransform)
self.view.loadFinished.connect(self._render_html,
type=Qt.QueuedConnection)
for x in (Qt.Horizontal, Qt.Vertical):
self.view.page().mainFrame().setScrollBarPolicy(
x, Qt.ScrollBarAlwaysOff)
self.render_queue = []
self.combine_queue = []
self.tmp_path = PersistentTemporaryDirectory(u'_pdf_output_parts')
self.opts = opts
self.cover_data = cover_data
self.paged_js = None
self.toc = toc
def test_merge_fonts():
path = sys.argv[-1]
podofo = get_podofo()
pdf_doc = podofo.PDFDoc()
pdf_doc.open(path)
merge_fonts(pdf_doc)
out = path.rpartition('.')[0] + '-merged.pdf'
pdf_doc.save(out)
print('Merged PDF writted to', out)
def is_rasterbook(path, basic_return=True):
"""
Identify whether this is a raster doc (ie. a scan) or a digitally authored text+graphic doc.
Skip conversion if source doc is not mostly raster-image based.
Ascertain this by checking whether there are as many image objects in the PDF
as there are pages +/- 5 (google books and other scanners add pure-text preambles to their pdfs)
If basic_return is True:
return:
aforementioned bool value
otherwise:
return:
aforementioned bool value, number of pages, number of images
"""
def fun_basic_return(result, pages, images):
if basic_return:
return result
else:
return result, pages, images
printsd('enter is_rasterbook: {}'.format(path))
podofo = get_podofo()
pdf = podofo.PDFDoc()
printsd('opens file')
pdf.open(path)
printsd('\n starts counting pages')
pages = pdf.page_count()
printsd('\n number of pages: {}'.format(pages))
try:
# without try statement, a lot of PDFs causes podofo.Error:
# Error: A NULL handle was passed, but initialized data was expected.
# It's probably a bug in calibre podofo image_count method:
# https://github.com/kovidgoyal/calibre/blob/master/src/calibre/utils/podofo/doc.cpp#L146
# or PDF file created with errors.
#
# This is not a big concern because raises mostly for heavy image PDFs
images = pdf.image_count()
except:
import inspect
error_info = sys.exc_info()
prints("Unexpected error: {}".format(error_info))
prints("from module: {}".format(inspect.getmodule(error_info[0])))
# reraise exception if other exception than podofo.Error
# str comparison because of problems with importing cpp Error
# TODO: error type in except statement
if object.__str__(error_info[0]) != "<class 'podofo.Error'>":
raise
else:
# TODO: WARN or ASK user what to do, image count is unknown
return fun_basic_return(True, pages, None)
else:
prints("pages(%s) : images(%s) > %s" % (pages, images, path))
if pages > 0:
return fun_basic_return(abs(pages - images) <= 5, pages, images)
return fun_basic_return(False, pages, images)
def test_merge_fonts():
path = sys.argv[-1]
podofo = get_podofo()
pdf_doc = podofo.PDFDoc()
pdf_doc.open(path)
from calibre.utils.logging import default_log
merge_fonts(pdf_doc, default_log)
out = path.rpartition('.')[0] + '-merged.pdf'
pdf_doc.save(out)
print('Merged PDF written to', out)
def is_rasterbook(path, basic_return=True):
"""
Identify whether this is a raster doc (ie. a scan) or a digitally authored text+graphic doc.
Skip conversion if source doc is not mostly raster-image based.
Ascertain this by checking whether there are as many image objects in the PDF
as there are pages +/- 5 (google books and other scanners add pure-text preambles to their pdfs)
If basic_return is True:
return:
aforementioned bool value
otherwise:
return:
aforementioned bool value, number of pages, number of images
"""
def fun_basic_return(result, pages, images):
if basic_return:
return result
else:
return result, pages, images
printsd('enter is_rasterbook: {}'.format(path))
podofo = get_podofo()
pdf = podofo.PDFDoc()
printsd('opens file')
pdf.open(path)
printsd('\n starts counting pages')
pages = pdf.page_count()
printsd('\n number of pages: {}'.format(pages))
try:
# without try statement, a lot of PDFs causes podofo.Error:
# Error: A NULL handle was passed, but initialized data was expected.
# It's probably a bug in calibre podofo image_count method:
# https://github.com/kovidgoyal/calibre/blob/master/src/calibre/utils/podofo/doc.cpp#L146
images = pdf.image_count()
except:
import inspect
error_info = sys.exc_info()
prints("Unexpected error: {}".format(error_info))
prints("from module: {}".format(inspect.getmodule(error_info[0])))
# reraise exception if other exception than podofo.Error
# str comparison because of problems with importing cpp Error
# TODO: error type in except statement
if object.__str__(error_info[0]) != "<class 'podofo.Error'>":
raise
else:
# TODO: WARN or ASK user what to do, image count is unknown
return fun_basic_return(True, pages, None)
else:
prints("pages(%s) : images(%s) > %s" % (pages, images, path))
if pages > 0:
return fun_basic_return(abs(pages - images) <= 5, pages, images)
return fun_basic_return(False, pages, images)
def dump(self, items, out_stream, pdf_metadata):
from calibre.utils.podofo import get_podofo
f = PersistentTemporaryFile('_comic2pdf.pdf')
f.close()
self.metadata = pdf_metadata
try:
self.render_images(f.name, pdf_metadata, items)
with open(f.name, 'rb') as x:
raw = x.read()
doc = get_podofo().PDFDoc()
doc.load(raw)
doc.creator = u'%s %s [http://calibre-ebook.com]'%(
__appname__, __version__)
doc.title = self.metadata.title
doc.author = self.metadata.author
if self.metadata.tags:
doc.keywords = self.metadata.tags
raw = doc.write()
out_stream.write(raw)
finally:
try:
os.remove(f.name)
except:
pass
def dump(self, items, out_stream, pdf_metadata):
from calibre.utils.podofo import get_podofo
f = PersistentTemporaryFile('_comic2pdf.pdf')
f.close()
self.metadata = pdf_metadata
try:
self.render_images(f.name, pdf_metadata, items)
with open(f.name, 'rb') as x:
raw = x.read()
doc = get_podofo().PDFDoc()
doc.load(raw)
doc.creator = u'%s %s [http://calibre-ebook.com]' % (__appname__,
__version__)
doc.title = self.metadata.title
doc.author = self.metadata.author
if self.metadata.tags:
doc.keywords = self.metadata.tags
raw = doc.write()
out_stream.write(raw)
finally:
try:
os.remove(f.name)
except:
pass
def data_as_pdf_doc(data):
podofo = get_podofo()
ans = podofo.PDFDoc()
ans.load(data)
return ans
