def option_parser():
from calibre.gui2.main_window import option_parser
parser = option_parser(_('''\
%prog [options] file
View an e-book.
'''))
a = parser.add_option
a('--raise-window', default=False, action='store_true',
help=_('If specified, the E-book viewer window will try to come to the '
'front when started.'))
a('--full-screen', '--fullscreen', '-f', default=False, action='store_true',
help=_('If specified, the E-book viewer window will try to open '
'full screen when started.'))
a('--force-reload', default=False, action='store_true',
help=_('Force reload of all opened books'))
a('--open-at', default=None, help=_(
'The position at which to open the specified book. The position is '
'a location or position you can get by using the Go to->Location action in the viewer controls. '
'Alternately, you can use the form toc:something and it will open '
'at the location of the first Table of Contents entry that contains '
'the string "something". The form toc-href:something will match the '
'href (internal link destination) of toc nodes. The matching is exact, '
'If you want to match a substring, use the form toc-href-contains:something. '
'The form ref:something will use Reference mode references.'))
a('--continue', default=False, action='store_true', dest='continue_reading',
help=_('Continue reading the last opened book'))
setup_gui_option_parser(parser)
return parser
def main(args=sys.argv):
# Ensure viewer can continue to function if GUI is closed
os.environ.pop('CALIBRE_WORKER_TEMP_DIR', None)
reset_base_dir()
scheme = QWebEngineUrlScheme(FAKE_PROTOCOL.encode('ascii'))
scheme.setSyntax(QWebEngineUrlScheme.Syntax.Host)
scheme.setFlags(QWebEngineUrlScheme.Flag.SecureScheme)
QWebEngineUrlScheme.registerScheme(scheme)
override = 'calibre-ebook-viewer' if islinux else None
processed_args = []
internal_book_data = internal_book_data_path = None
for arg in args:
if arg.startswith('--internal-book-data='):
internal_book_data_path = arg.split('=', 1)[1]
continue
processed_args.append(arg)
if internal_book_data_path:
try:
with lopen(internal_book_data_path, 'rb') as f:
internal_book_data = json.load(f)
finally:
try:
os.remove(internal_book_data_path)
except OSError:
pass
args = processed_args
app = Application(args, override_program_name=override, windows_app_uid=VIEWER_APP_UID)
parser = option_parser()
opts, args = parser.parse_args(args)
oat = opts.open_at
if oat and not (
oat.startswith('toc:') or oat.startswith('toc-href:') or oat.startswith('toc-href-contains:') or
oat.startswith('epubcfi(/') or is_float(oat) or oat.startswith('ref:')):
raise SystemExit('Not a valid --open-at value: {}'.format(opts.open_at))
if get_session_pref('singleinstance', False):
from calibre.utils.lock import SingleInstance
from calibre.gui2.listener import Listener
with SingleInstance(singleinstance_name) as si:
if si:
try:
listener = Listener(address=viewer_socket_address(), parent=app)
listener.start_listening()
except Exception as err:
error_dialog(None, _('Failed to start listener'), _(
'Could not start the listener used for single instance viewers. Try rebooting your computer.'),
det_msg=str(err), show=True)
else:
with closing(listener):
run_gui(app, opts, args, internal_book_data, listener=listener)
else:
send_message_to_viewer_instance(args, opts.open_at)
else:
run_gui(app, opts, args, internal_book_data)
def main(args=sys.argv):
# Ensure viewer can continue to function if GUI is closed
os.environ.pop('CALIBRE_WORKER_TEMP_DIR', None)
reset_base_dir()
scheme = QWebEngineUrlScheme(FAKE_PROTOCOL.encode('ascii'))
scheme.setSyntax(QWebEngineUrlScheme.Syntax.Host)
scheme.setFlags(QWebEngineUrlScheme.SecureScheme)
QWebEngineUrlScheme.registerScheme(scheme)
override = 'calibre-ebook-viewer' if islinux else None
app = Application(args, override_program_name=override, windows_app_uid=VIEWER_APP_UID)
parser = option_parser()
opts, args = parser.parse_args(args)
oat = opts.open_at
if oat and not (
oat.startswith('toc:') or oat.startswith('toc-href:') or oat.startswith('toc-href-contains:') or
oat.startswith('epubcfi(/') or is_float(oat)):
raise SystemExit('Not a valid --open-at value: {}'.format(opts.open_at))
listener = None
if get_session_pref('singleinstance', False):
try:
listener = ensure_single_instance(args, opts.open_at)
except Exception as e:
import traceback
error_dialog(None, _('Failed to start viewer'), as_unicode(e), det_msg=traceback.format_exc(), show=True)
raise SystemExit(1)
acc = EventAccumulator(app)
app.file_event_hook = acc
app.load_builtin_fonts()
app.setWindowIcon(QIcon(I('viewer.png')))
migrate_previous_viewer_prefs()
main = EbookViewer(open_at=opts.open_at, continue_reading=opts.continue_reading, force_reload=opts.force_reload)
main.set_exception_handler()
if len(args) > 1:
acc.events.append(os.path.abspath(args[-1]))
acc.got_file.connect(main.handle_commandline_arg)
main.show()
main.msg_from_anotherinstance.connect(main.another_instance_wants_to_talk, type=Qt.QueuedConnection)
if listener is not None:
t = Thread(name='ConnListener', target=listen, args=(listener, main.msg_from_anotherinstance))
t.daemon = True
t.start()
QTimer.singleShot(0, acc.flush)
if opts.raise_window:
main.raise_()
if opts.full_screen:
main.set_full_screen(True)
app.exec_()
if listener is not None:
listener.close()
def option_parser():
from calibre.gui2.main_window import option_parser
parser = option_parser(
_(
"""\
%prog [options] book.lrf
Read the LRF ebook book.lrf
"""
)
)
parser.add_option(
"--verbose",
default=False,
action="store_true",
dest="verbose",
help=_("Print more information about the rendering process"),
)
parser.add_option(
"--visual-debug",
help=_("Turn on visual aids to debugging the rendering engine"),
default=False,
action="store_true",
dest="visual_debug",
)
parser.add_option(
"--disable-hyphenation",
dest="hyphenate",
default=True,
action="store_false",
help=_("Disable hyphenation. Should significantly speed up rendering."),
)
parser.add_option(
"--white-background",
dest="white_background",
default=False,
action="store_true",
help=_(
"By default the background is off white as I find this easier on the eyes. Use this option to make the background pure white."
),
)
parser.add_option(
"--profile", dest="profile", default=False, action="store_true", help=_("Profile the LRF renderer")
)
return parser
def option_parser():
from calibre.gui2.main_window import option_parser
parser = option_parser(_('''\
%prog [options] book.lrf
Read the LRF e-book book.lrf
'''))
parser.add_option('--verbose', default=False, action='store_true', dest='verbose',
help=_('Print more information about the rendering process'))
parser.add_option('--visual-debug', help=_('Turn on visual aids to debugging the rendering engine'),
default=False, action='store_true', dest='visual_debug')
parser.add_option('--disable-hyphenation', dest='hyphenate', default=True, action='store_false',
help=_('Disable hyphenation. Should significantly speed up rendering.'))
parser.add_option('--white-background', dest='white_background', default=False, action='store_true',
help=_('By default the background is off white as I find this easier on the eyes. Use this option to make the background pure white.'))
parser.add_option('--profile', dest='profile', default=False, action='store_true',
help=_('Profile the LRF renderer'))
return parser
def main(args=sys.argv, logger=None):
parser = option_parser()
opts, args = parser.parse_args(args)
if hasattr(opts, 'help'):
parser.print_help()
return 1
pid = os.fork() if (islinux or isbsd) else -1
if pid <= 0:
override = 'calibre-lrf-viewer' if islinux else None
app = Application(args, override_program_name=override)
app.setWindowIcon(QIcon(I('viewer.png')))
opts = normalize_settings(parser, opts)
stream = open(args[1], 'rb') if len(args) > 1 else None
main = file_renderer(stream, opts, logger=logger)
main.set_exception_handler()
main.show()
main.render()
main.activateWindow()
main.raise_()
return app.exec_()
return 0
def option_parser():
from calibre.gui2.main_window import option_parser
parser = option_parser(_('''\
%prog [options] file
View an e-book.
'''))
a = parser.add_option
a('--raise-window',
default=False,
action='store_true',
help=_('If specified, viewer window will try to come to the '
'front when started.'))
a('--full-screen',
'--fullscreen',
'-f',
default=False,
action='store_true',
help=_('If specified, viewer window will try to open '
'full screen when started.'))
a('--open-at',
default=None,
help=_(
'The position at which to open the specified book. The position is '
'a location you can get by using the Goto action in the viewer controls. '
'Alternately, you can use the form toc:something and it will open '
'at the location of the first Table of Contents entry that contains '
'the string "something".'))
a('--continue',
default=False,
action='store_true',
dest='continue_reading',
help=_('Continue reading at the previously opened book'))
setup_gui_option_parser(parser)
return parser