def convert_pdf_to_jpeg(log, pdf_data, page_num, reported_errors=None):
pdf_file = temp_filename("pdf", pdf_data)
jpeg_dir = create_temp_dir()
if True:
from calibre.ebooks.metadata.pdf import page_images
page_images(pdf_file, jpeg_dir, first=page_num, last=page_num)
for dirpath, dirnames, filenames in os.walk(jpeg_dir):
if len(filenames) != 1:
raise Exception("pdftoppm created %d files" % len(filenames))
if not (filenames[0].endswith(".jpg")
or filenames[0].endswith(".jpeg")):
raise Exception("pdftoppm created unexpected file: %s" %
filenames[0])
with io.open(os.path.join(dirpath, filenames[0]), "rb") as of:
jpeg_data = of.read()
break
else:
raise Exception("pdftoppm created no files")
return jpeg_data
def render(self):
self.error = None
try:
page_images(self.pdfpath, self.tdir, last=10)
except Exception as e:
self.error = as_unicode(e)
if not sip.isdeleted(self) and self.isVisible():
self.rendering_done.emit()
def render(self):
self.error = None
try:
page_images(self.pdfpath, self.tdir, last=10)
except Exception as e:
self.error = as_unicode(e)
if not sip.isdeleted(self) and self.isVisible():
self.rendering_done.emit()
def render(self):
self.current_tdir = os.path.join(self.tdir, str(self.first))
self.error = None
try:
os.mkdir(self.current_tdir)
page_images(self.pdfpath, self.current_tdir, first=self.first, last=self.first + PAGES_PER_RENDER - 1)
except Exception as e:
if self.covers.count():
pass
else:
self.error = as_unicode(e)
if not sip.isdeleted(self) and self.isVisible():
self.rendering_done.emit()
def render(self):
self.current_tdir = os.path.join(self.tdir, unicode_type(self.first))
self.error = None
try:
os.mkdir(self.current_tdir)
page_images(self.pdfpath, self.current_tdir, first=self.first, last=self.first + PAGES_PER_RENDER - 1)
except Exception as e:
if self.covers.count():
pass
else:
self.error = as_unicode(e)
if not sip.isdeleted(self) and self.isVisible():
self.rendering_done.emit()
def main(path_to_html, tdir, image_format='jpeg'):
if image_format not in ('jpeg', 'png'):
raise ValueError('Image format must be either jpeg or png')
must_use_qt()
path_to_html = os.path.abspath(path_to_html)
os.chdir(tdir)
renderer = Render()
renderer.start_load(path_to_html)
ret = QApplication.instance().exec_()
if ret == 0:
page_images('rendered.pdf', image_format=image_format)
ext = {'jpeg': 'jpg'}.get(image_format, image_format)
atomic_rename('page-images-1.' + ext, 'rendered.' + image_format)
return ret == 0
