def show_splash_screen(self):
self.splash_screen = SplashScreen(get_debug_executable())
self.splash_screen.show_message(_('Starting %s: Loading books...') % __appname__)
class GuiRunner(QObject):
'''Make sure an event loop is running before starting the main work of
initialization'''
def __init__(self, opts, args, actions, listener, app, gui_debug=None):
self.startup_time = time.time()
self.opts, self.args, self.listener, self.app = opts, args, listener, app
self.gui_debug = gui_debug
self.actions = actions
self.main = None
QObject.__init__(self)
self.splash_screen = None
self.timer = QTimer.singleShot(1, self.initialize)
if DEBUG:
prints('Starting up...')
def start_gui(self, db):
from calibre.gui2.ui import Main
main = self.main = Main(self.opts, gui_debug=self.gui_debug)
if self.splash_screen is not None:
self.splash_screen.show_message(_('Initializing user interface...'))
with gprefs: # Only write gui.json after initialization is complete
main.initialize(self.library_path, db, self.listener, self.actions, splash_screen=self.splash_screen)
self.splash_screen = None
if DEBUG:
prints('Started up in %.2f seconds'%(time.time() -
self.startup_time), 'with', len(db.data), 'books')
add_filesystem_book = partial(main.iactions['Add Books'].add_filesystem_book, allow_device=False)
sys.excepthook = main.unhandled_exception
if len(self.args) > 1:
files = [os.path.abspath(p) for p in self.args[1:] if not
os.path.isdir(p)]
if len(files) < len(sys.argv[1:]):
prints('Ignoring directories passed as command line arguments')
if files:
add_filesystem_book(files)
for event in self.app.file_event_hook.events:
add_filesystem_book(event)
self.app.file_event_hook = add_filesystem_book
def hide_splash_screen(self):
if self.splash_screen is not None:
with self.app:
self.splash_screen.hide()
self.splash_screen = None
def choose_dir(self, initial_dir):
self.hide_splash_screen()
return choose_dir(None, 'choose calibre library',
_('Choose a location for your new calibre e-book library'),
default_dir=initial_dir)
def show_error(self, title, msg, det_msg=''):
self.hide_splash_screen()
with self.app:
error_dialog(self.main, title, msg, det_msg=det_msg, show=True)
def initialization_failed(self):
print 'Catastrophic failure initializing GUI, bailing out...'
QCoreApplication.exit(1)
raise SystemExit(1)
def initialize_db_stage2(self, db, tb):
from calibre.db.legacy import LibraryDatabase
if db is None and tb is not None:
# DB Repair failed
self.show_error(_('Repairing failed'), _(
'The database repair failed. Starting with a new empty library.'),
det_msg=tb)
if db is None:
candidate = self.choose_dir(get_default_library_path())
if not candidate:
self.initialization_failed()
try:
self.library_path = candidate
db = LibraryDatabase(candidate)
except:
self.show_error(_('Bad database location'), _(
'Bad database location %r. calibre will now quit.')%self.library_path,
det_msg=traceback.format_exc())
self.initialization_failed()
try:
self.start_gui(db)
except Exception:
self.show_error(_('Startup error'), _(
'There was an error during {0} startup. Parts of {0} may not function.'
' Click Show details to learn more.').format(__appname__),
det_msg=traceback.format_exc())
def initialize_db(self):
from calibre.db.legacy import LibraryDatabase
db = None
try:
db = LibraryDatabase(self.library_path)
except apsw.Error:
self.hide_splash_screen()
with self.app:
repair = question_dialog(None, _('Corrupted database'),
_('The library database at %s appears to be corrupted. Do '
'you want calibre to try and rebuild it automatically? '
'The rebuild may not be completely successful. '
'If you say No, a new empty calibre library will be created.')
% force_unicode(self.library_path, filesystem_encoding),
det_msg=traceback.format_exc()
)
if repair:
if repair_library(self.library_path):
db = LibraryDatabase(self.library_path)
except:
self.show_error(_('Bad database location'),
_('Bad database location %r. Will start with '
' a new, empty calibre library')%self.library_path,
det_msg=traceback.format_exc())
self.initialize_db_stage2(db, None)
def show_splash_screen(self):
self.splash_screen = SplashScreen(get_debug_executable())
self.splash_screen.show_message(_('Starting %s: Loading books...') % __appname__)
def initialize(self, *args):
if gprefs['show_splash_screen']:
self.show_splash_screen()
self.library_path = get_library_path(self)
if not self.library_path:
self.initialization_failed()
self.initialize_db()
