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 initialize(self, library_path, db, actions, show_gui=True):
opts = self.opts
self.preferences_action, self.quit_action = actions
self.library_path = library_path
self.library_broker = GuiLibraryBroker(db)
self.content_server = None
self.server_change_notification_timer = t = QTimer(self)
self.server_changes = Queue()
t.setInterval(1000), t.timeout.connect(self.handle_changes_from_server_debounced), t.setSingleShot(True)
self._spare_pool = None
self.must_restart_before_config = False
for ac in self.iactions.values():
try:
ac.do_genesis()
except Exception:
# Ignore errors in third party plugins
import traceback
traceback.print_exc()
if getattr(ac, 'plugin_path', None) is None:
raise
self.donate_action = QAction(QIcon(I('donate.png')),
_('&Donate to support calibre'), self)
for st in self.istores.values():
st.do_genesis()
MainWindowMixin.init_main_window_mixin(self, db)
# Jobs Button {{{
self.job_manager = JobManager()
self.jobs_dialog = JobsDialog(self, self.job_manager)
self.jobs_button = JobsButton(parent=self)
self.jobs_button.initialize(self.jobs_dialog, self.job_manager)
# }}}
LayoutMixin.init_layout_mixin(self)
DeviceMixin.init_device_mixin(self)
self.progress_indicator = ProgressIndicator(self)
self.progress_indicator.pos = (0, 20)
self.verbose = opts.verbose
self.get_metadata = GetMetadata()
self.upload_memory = {}
self.metadata_dialogs = []
self.default_thumbnail = None
self.tb_wrapper = textwrap.TextWrapper(width=40)
self.viewers = collections.deque()
self.system_tray_icon = None
do_systray = config['systray_icon'] or opts.start_in_tray
if do_systray:
self.system_tray_icon = factory(app_id='com.calibre-ebook.gui').create_system_tray_icon(parent=self, title='calibre')
if self.system_tray_icon is not None:
self.system_tray_icon.setIcon(QIcon(I('lt.png', allow_user_override=False)))
if not (iswindows or ismacos):
self.system_tray_icon.setIcon(QIcon.fromTheme('calibre-tray', self.system_tray_icon.icon()))
self.system_tray_icon.setToolTip(self.jobs_button.tray_tooltip())
self.system_tray_icon.setVisible(True)
self.jobs_button.tray_tooltip_updated.connect(self.system_tray_icon.setToolTip)
elif do_systray:
prints('Failed to create system tray icon, your desktop environment probably'
' does not support the StatusNotifier spec https://www.freedesktop.org/wiki/Specifications/StatusNotifierItem/')
self.system_tray_menu = QMenu(self)
self.toggle_to_tray_action = self.system_tray_menu.addAction(QIcon(I('page.png')), '')
self.toggle_to_tray_action.triggered.connect(self.system_tray_icon_activated)
self.system_tray_menu.addAction(self.donate_action)
self.eject_action = self.system_tray_menu.addAction(
QIcon(I('eject.png')), _('&Eject connected device'))
self.eject_action.setEnabled(False)
self.addAction(self.quit_action)
self.system_tray_menu.addAction(self.quit_action)
self.keyboard.register_shortcut('quit calibre', _('Quit calibre'),
default_keys=('Ctrl+Q',), action=self.quit_action)
if self.system_tray_icon is not None:
self.system_tray_icon.setContextMenu(self.system_tray_menu)
self.system_tray_icon.activated.connect(self.system_tray_icon_activated)
self.quit_action.triggered[bool].connect(self.quit)
self.donate_action.triggered[bool].connect(self.donate)
self.minimize_action = QAction(_('Minimize the calibre window'), self)
self.addAction(self.minimize_action)
self.keyboard.register_shortcut('minimize calibre', self.minimize_action.text(),
default_keys=(), action=self.minimize_action)
self.minimize_action.triggered.connect(self.showMinimized)
self.esc_action = QAction(self)
self.addAction(self.esc_action)
self.keyboard.register_shortcut('clear current search',
_('Clear the current search'), default_keys=('Esc',),
action=self.esc_action)
self.esc_action.triggered.connect(self.esc)
self.shift_esc_action = QAction(self)
self.addAction(self.shift_esc_action)
self.keyboard.register_shortcut('focus book list',
_('Focus the book list'), default_keys=('Shift+Esc',),
action=self.shift_esc_action)
self.shift_esc_action.triggered.connect(self.shift_esc)
self.ctrl_esc_action = QAction(self)
self.addAction(self.ctrl_esc_action)
self.keyboard.register_shortcut('clear virtual library',
_('Clear the Virtual library'), default_keys=('Ctrl+Esc',),
action=self.ctrl_esc_action)
self.ctrl_esc_action.triggered.connect(self.ctrl_esc)
self.alt_esc_action = QAction(self)
self.addAction(self.alt_esc_action)
self.keyboard.register_shortcut('clear additional restriction',
_('Clear the additional restriction'), default_keys=('Alt+Esc',),
action=self.alt_esc_action)
self.alt_esc_action.triggered.connect(self.clear_additional_restriction)
# ###################### Start spare job server ########################
QTimer.singleShot(1000, self.create_spare_pool)
# ###################### Location Manager ########################
self.location_manager.location_selected.connect(self.location_selected)
self.location_manager.unmount_device.connect(self.device_manager.umount_device)
self.location_manager.configure_device.connect(self.configure_connected_device)
self.location_manager.update_device_metadata.connect(self.update_metadata_on_device)
self.eject_action.triggered.connect(self.device_manager.umount_device)
# ################### Update notification ###################
UpdateMixin.init_update_mixin(self, opts)
# ###################### Search boxes ########################
SearchRestrictionMixin.init_search_restriction_mixin(self)
SavedSearchBoxMixin.init_saved_seach_box_mixin(self)
# ###################### Library view ########################
LibraryViewMixin.init_library_view_mixin(self, db)
SearchBoxMixin.init_search_box_mixin(self) # Requires current_db
self.library_view.model().count_changed_signal.connect(
self.iactions['Choose Library'].count_changed)
if not gprefs.get('quick_start_guide_added', False):
try:
add_quick_start_guide(self.library_view)
except:
import traceback
traceback.print_exc()
for view in ('library', 'memory', 'card_a', 'card_b'):
v = getattr(self, '%s_view' % view)
v.selectionModel().selectionChanged.connect(self.update_status_bar)
v.model().count_changed_signal.connect(self.update_status_bar)
self.library_view.model().count_changed()
self.bars_manager.database_changed(self.library_view.model().db)
self.library_view.model().database_changed.connect(self.bars_manager.database_changed,
type=Qt.QueuedConnection)
# ########################## Tags Browser ##############################
TagBrowserMixin.init_tag_browser_mixin(self, db)
self.library_view.model().database_changed.connect(self.populate_tb_manage_menu, type=Qt.QueuedConnection)
# ######################## Search Restriction ##########################
if db.new_api.pref('virtual_lib_on_startup'):
self.apply_virtual_library(db.new_api.pref('virtual_lib_on_startup'))
self.rebuild_vl_tabs()
# ########################## Cover Flow ################################
CoverFlowMixin.init_cover_flow_mixin(self)
self._calculated_available_height = min(max_available_height()-15,
self.height())
self.resize(self.width(), self._calculated_available_height)
self.build_context_menus()
for ac in self.iactions.values():
try:
ac.gui_layout_complete()
except:
import traceback
traceback.print_exc()
if ac.plugin_path is None:
raise
if config['autolaunch_server']:
self.start_content_server()
if show_gui:
self.show()
self.read_settings()
self.finalize_layout()
self.bars_manager.start_animation()
self.set_window_title()
for ac in self.iactions.values():
try:
ac.initialization_complete()
except:
import traceback
traceback.print_exc()
if ac.plugin_path is None:
raise
self.set_current_library_information(current_library_name(), db.library_id,
db.field_metadata)
register_keyboard_shortcuts()
self.keyboard.finalize()
if self.system_tray_icon is not None and self.system_tray_icon.isVisible() and opts.start_in_tray:
self.hide_windows()
self.auto_adder = AutoAdder(gprefs['auto_add_path'], self)
self.listener = Listener(parent=self)
self.listener.message_received.connect(self.message_from_another_instance)
QTimer.singleShot(0, self.listener.start_listening)
# Collect cycles now
gc.collect()
QApplication.instance().shutdown_signal_received.connect(self.quit)
if show_gui and self.gui_debug is not None:
QTimer.singleShot(10, self.show_gui_debug_msg)
self.iactions['Connect Share'].check_smartdevice_menus()
QTimer.singleShot(1, self.start_smartdevice)
QTimer.singleShot(100, self.update_toggle_to_tray_action)
# Once the gui is initialized we can restore the quickview state
# The same thing will be true for any action-based operation with a
# layout button. We need to let a book be selected in the book list
# before initializing quickview, so run it after an event loop tick
QTimer.singleShot(0, self.start_quickview)
class Main(MainWindow, MainWindowMixin, DeviceMixin, EmailMixin, # {{{
TagBrowserMixin, CoverFlowMixin, LibraryViewMixin, SearchBoxMixin,
SavedSearchBoxMixin, SearchRestrictionMixin, LayoutMixin, UpdateMixin,
EbookDownloadMixin
):
'The main GUI'
proceed_requested = pyqtSignal(object, object)
book_converted = pyqtSignal(object, object)
shutting_down = False
def __init__(self, opts, parent=None, gui_debug=None):
MainWindow.__init__(self, opts, parent=parent, disable_automatic_gc=True)
self.setWindowIcon(QApplication.instance().windowIcon())
self.jobs_pointer = Pointer(self)
self.proceed_requested.connect(self.do_proceed,
type=Qt.QueuedConnection)
self.proceed_question = ProceedQuestion(self)
self.job_error_dialog = JobError(self)
self.keyboard = Manager(self)
get_gui.ans = self
self.opts = opts
self.device_connected = None
self.gui_debug = gui_debug
self.iactions = OrderedDict()
# Actions
for action in interface_actions():
if opts.ignore_plugins and action.plugin_path is not None:
continue
try:
ac = self.init_iaction(action)
except:
# Ignore errors in loading user supplied plugins
import traceback
traceback.print_exc()
if action.plugin_path is None:
raise
continue
ac.plugin_path = action.plugin_path
ac.interface_action_base_plugin = action
self.add_iaction(ac)
self.load_store_plugins()
def init_iaction(self, action):
ac = action.load_actual_plugin(self)
ac.plugin_path = action.plugin_path
ac.interface_action_base_plugin = action
action.actual_iaction_plugin_loaded = True
return ac
def add_iaction(self, ac):
acmap = self.iactions
if ac.name in acmap:
if ac.priority >= acmap[ac.name].priority:
acmap[ac.name] = ac
else:
acmap[ac.name] = ac
def load_store_plugins(self):
from calibre.gui2.store.loader import Stores
self.istores = Stores()
for store in available_store_plugins():
if self.opts.ignore_plugins and store.plugin_path is not None:
continue
try:
st = self.init_istore(store)
self.add_istore(st)
except:
# Ignore errors in loading user supplied plugins
import traceback
traceback.print_exc()
if store.plugin_path is None:
raise
continue
self.istores.builtins_loaded()
def init_istore(self, store):
st = store.load_actual_plugin(self)
st.plugin_path = store.plugin_path
st.base_plugin = store
store.actual_istore_plugin_loaded = True
return st
def add_istore(self, st):
stmap = self.istores
if st.name in stmap:
if st.priority >= stmap[st.name].priority:
stmap[st.name] = st
else:
stmap[st.name] = st
def initialize(self, library_path, db, actions, show_gui=True):
opts = self.opts
self.preferences_action, self.quit_action = actions
self.library_path = library_path
self.library_broker = GuiLibraryBroker(db)
self.content_server = None
self.server_change_notification_timer = t = QTimer(self)
self.server_changes = Queue()
t.setInterval(1000), t.timeout.connect(self.handle_changes_from_server_debounced), t.setSingleShot(True)
self._spare_pool = None
self.must_restart_before_config = False
for ac in self.iactions.values():
try:
ac.do_genesis()
except Exception:
# Ignore errors in third party plugins
import traceback
traceback.print_exc()
if getattr(ac, 'plugin_path', None) is None:
raise
self.donate_action = QAction(QIcon(I('donate.png')),
_('&Donate to support calibre'), self)
for st in self.istores.values():
st.do_genesis()
MainWindowMixin.init_main_window_mixin(self, db)
# Jobs Button {{{
self.job_manager = JobManager()
self.jobs_dialog = JobsDialog(self, self.job_manager)
self.jobs_button = JobsButton(parent=self)
self.jobs_button.initialize(self.jobs_dialog, self.job_manager)
# }}}
LayoutMixin.init_layout_mixin(self)
DeviceMixin.init_device_mixin(self)
self.progress_indicator = ProgressIndicator(self)
self.progress_indicator.pos = (0, 20)
self.verbose = opts.verbose
self.get_metadata = GetMetadata()
self.upload_memory = {}
self.metadata_dialogs = []
self.default_thumbnail = None
self.tb_wrapper = textwrap.TextWrapper(width=40)
self.viewers = collections.deque()
self.system_tray_icon = None
do_systray = config['systray_icon'] or opts.start_in_tray
if do_systray:
self.system_tray_icon = factory(app_id='com.calibre-ebook.gui').create_system_tray_icon(parent=self, title='calibre')
if self.system_tray_icon is not None:
self.system_tray_icon.setIcon(QIcon(I('lt.png', allow_user_override=False)))
if not (iswindows or ismacos):
self.system_tray_icon.setIcon(QIcon.fromTheme('calibre-tray', self.system_tray_icon.icon()))
self.system_tray_icon.setToolTip(self.jobs_button.tray_tooltip())
self.system_tray_icon.setVisible(True)
self.jobs_button.tray_tooltip_updated.connect(self.system_tray_icon.setToolTip)
elif do_systray:
prints('Failed to create system tray icon, your desktop environment probably'
' does not support the StatusNotifier spec https://www.freedesktop.org/wiki/Specifications/StatusNotifierItem/')
self.system_tray_menu = QMenu(self)
self.toggle_to_tray_action = self.system_tray_menu.addAction(QIcon(I('page.png')), '')
self.toggle_to_tray_action.triggered.connect(self.system_tray_icon_activated)
self.system_tray_menu.addAction(self.donate_action)
self.eject_action = self.system_tray_menu.addAction(
QIcon(I('eject.png')), _('&Eject connected device'))
self.eject_action.setEnabled(False)
self.addAction(self.quit_action)
self.system_tray_menu.addAction(self.quit_action)
self.keyboard.register_shortcut('quit calibre', _('Quit calibre'),
default_keys=('Ctrl+Q',), action=self.quit_action)
if self.system_tray_icon is not None:
self.system_tray_icon.setContextMenu(self.system_tray_menu)
self.system_tray_icon.activated.connect(self.system_tray_icon_activated)
self.quit_action.triggered[bool].connect(self.quit)
self.donate_action.triggered[bool].connect(self.donate)
self.minimize_action = QAction(_('Minimize the calibre window'), self)
self.addAction(self.minimize_action)
self.keyboard.register_shortcut('minimize calibre', self.minimize_action.text(),
default_keys=(), action=self.minimize_action)
self.minimize_action.triggered.connect(self.showMinimized)
self.esc_action = QAction(self)
self.addAction(self.esc_action)
self.keyboard.register_shortcut('clear current search',
_('Clear the current search'), default_keys=('Esc',),
action=self.esc_action)
self.esc_action.triggered.connect(self.esc)
self.shift_esc_action = QAction(self)
self.addAction(self.shift_esc_action)
self.keyboard.register_shortcut('focus book list',
_('Focus the book list'), default_keys=('Shift+Esc',),
action=self.shift_esc_action)
self.shift_esc_action.triggered.connect(self.shift_esc)
self.ctrl_esc_action = QAction(self)
self.addAction(self.ctrl_esc_action)
self.keyboard.register_shortcut('clear virtual library',
_('Clear the Virtual library'), default_keys=('Ctrl+Esc',),
action=self.ctrl_esc_action)
self.ctrl_esc_action.triggered.connect(self.ctrl_esc)
self.alt_esc_action = QAction(self)
self.addAction(self.alt_esc_action)
self.keyboard.register_shortcut('clear additional restriction',
_('Clear the additional restriction'), default_keys=('Alt+Esc',),
action=self.alt_esc_action)
self.alt_esc_action.triggered.connect(self.clear_additional_restriction)
# ###################### Start spare job server ########################
QTimer.singleShot(1000, self.create_spare_pool)
# ###################### Location Manager ########################
self.location_manager.location_selected.connect(self.location_selected)
self.location_manager.unmount_device.connect(self.device_manager.umount_device)
self.location_manager.configure_device.connect(self.configure_connected_device)
self.location_manager.update_device_metadata.connect(self.update_metadata_on_device)
self.eject_action.triggered.connect(self.device_manager.umount_device)
# ################### Update notification ###################
UpdateMixin.init_update_mixin(self, opts)
# ###################### Search boxes ########################
SearchRestrictionMixin.init_search_restriction_mixin(self)
SavedSearchBoxMixin.init_saved_seach_box_mixin(self)
# ###################### Library view ########################
LibraryViewMixin.init_library_view_mixin(self, db)
SearchBoxMixin.init_search_box_mixin(self) # Requires current_db
self.library_view.model().count_changed_signal.connect(
self.iactions['Choose Library'].count_changed)
if not gprefs.get('quick_start_guide_added', False):
try:
add_quick_start_guide(self.library_view)
except:
import traceback
traceback.print_exc()
for view in ('library', 'memory', 'card_a', 'card_b'):
v = getattr(self, '%s_view' % view)
v.selectionModel().selectionChanged.connect(self.update_status_bar)
v.model().count_changed_signal.connect(self.update_status_bar)
self.library_view.model().count_changed()
self.bars_manager.database_changed(self.library_view.model().db)
self.library_view.model().database_changed.connect(self.bars_manager.database_changed,
type=Qt.QueuedConnection)
# ########################## Tags Browser ##############################
TagBrowserMixin.init_tag_browser_mixin(self, db)
self.library_view.model().database_changed.connect(self.populate_tb_manage_menu, type=Qt.QueuedConnection)
# ######################## Search Restriction ##########################
if db.new_api.pref('virtual_lib_on_startup'):
self.apply_virtual_library(db.new_api.pref('virtual_lib_on_startup'))
self.rebuild_vl_tabs()
# ########################## Cover Flow ################################
CoverFlowMixin.init_cover_flow_mixin(self)
self._calculated_available_height = min(max_available_height()-15,
self.height())
self.resize(self.width(), self._calculated_available_height)
self.build_context_menus()
for ac in self.iactions.values():
try:
ac.gui_layout_complete()
except:
import traceback
traceback.print_exc()
if ac.plugin_path is None:
raise
if config['autolaunch_server']:
self.start_content_server()
if show_gui:
self.show()
self.read_settings()
self.finalize_layout()
self.bars_manager.start_animation()
self.set_window_title()
for ac in self.iactions.values():
try:
ac.initialization_complete()
except:
import traceback
traceback.print_exc()
if ac.plugin_path is None:
raise
self.set_current_library_information(current_library_name(), db.library_id,
db.field_metadata)
register_keyboard_shortcuts()
self.keyboard.finalize()
if self.system_tray_icon is not None and self.system_tray_icon.isVisible() and opts.start_in_tray:
self.hide_windows()
self.auto_adder = AutoAdder(gprefs['auto_add_path'], self)
self.listener = Listener(parent=self)
self.listener.message_received.connect(self.message_from_another_instance)
QTimer.singleShot(0, self.listener.start_listening)
# Collect cycles now
gc.collect()
QApplication.instance().shutdown_signal_received.connect(self.quit)
if show_gui and self.gui_debug is not None:
QTimer.singleShot(10, self.show_gui_debug_msg)
self.iactions['Connect Share'].check_smartdevice_menus()
QTimer.singleShot(1, self.start_smartdevice)
QTimer.singleShot(100, self.update_toggle_to_tray_action)
# Once the gui is initialized we can restore the quickview state
# The same thing will be true for any action-based operation with a
# layout button. We need to let a book be selected in the book list
# before initializing quickview, so run it after an event loop tick
QTimer.singleShot(0, self.start_quickview)
def start_quickview(self):
from calibre.gui2.actions.show_quickview import get_quickview_action_plugin
qv = get_quickview_action_plugin()
if qv:
if DEBUG:
prints('Starting QuickView')
qv.qv_button.restore_state()
self.save_layout_state()
self.library_view.setFocus(Qt.OtherFocusReason)
def show_gui_debug_msg(self):
info_dialog(self, _('Debug mode'), '<p>' +
_('You have started calibre in debug mode. After you '
'quit calibre, the debug log will be available in '
'the file: %s<p>The '
'log will be displayed automatically.')%self.gui_debug, show=True)
def esc(self, *args):
self.search.clear()
def shift_esc(self):
self.current_view().setFocus(Qt.OtherFocusReason)
def ctrl_esc(self):
self.apply_virtual_library()
self.current_view().setFocus(Qt.OtherFocusReason)
def start_smartdevice(self):
message = None
if self.device_manager.get_option('smartdevice', 'autostart'):
try:
message = self.device_manager.start_plugin('smartdevice')
except:
message = 'start smartdevice unknown exception'
prints(message)
import traceback
traceback.print_exc()
if message:
if not self.device_manager.is_running('Wireless Devices'):
error_dialog(self, _('Problem starting the wireless device'),
_('The wireless device driver had problems starting. '
'It said "%s"')%message, show=True)
self.iactions['Connect Share'].set_smartdevice_action_state()
def start_content_server(self, check_started=True):
from calibre.srv.embedded import Server
if not gprefs.get('server3_warning_done', False):
gprefs.set('server3_warning_done', True)
if os.path.exists(os.path.join(config_dir, 'server.py')):
try:
os.remove(os.path.join(config_dir, 'server.py'))
except EnvironmentError:
pass
warning_dialog(self, _('Content server changed!'), _(
'calibre 3 comes with a completely re-written content server.'
' As such any custom configuration you have for the content'
' server no longer applies. You should check and refresh your'
' settings in Preferences->Sharing->Sharing over the net'), show=True)
self.content_server = Server(self.library_broker, Dispatcher(self.handle_changes_from_server))
self.content_server.state_callback = Dispatcher(
self.iactions['Connect Share'].content_server_state_changed)
if check_started:
self.content_server.start_failure_callback = \
Dispatcher(self.content_server_start_failed)
self.content_server.start()
def handle_changes_from_server(self, library_path, change_event):
if DEBUG:
prints('Received server change event: {} for {}'.format(change_event, library_path))
if self.library_broker.is_gui_library(library_path):
self.server_changes.put((library_path, change_event))
self.server_change_notification_timer.start()
def handle_changes_from_server_debounced(self):
if self.shutting_down:
return
changes = []
while True:
try:
library_path, change_event = self.server_changes.get_nowait()
except Empty:
break
if self.library_broker.is_gui_library(library_path):
changes.append(change_event)
if changes:
handle_changes(changes, self)
def content_server_start_failed(self, msg):
self.content_server = None
error_dialog(self, _('Failed to start Content server'),
_('Could not start the Content server. Error:\n\n%s')%msg,
show=True)
def resizeEvent(self, ev):
MainWindow.resizeEvent(self, ev)
self.search.setMaximumWidth(self.width()-150)
def create_spare_pool(self, *args):
if self._spare_pool is None:
num = min(detect_ncpus(), config['worker_limit']//2)
self._spare_pool = Pool(max_workers=num, name='GUIPool')
def spare_pool(self):
ans, self._spare_pool = self._spare_pool, None
QTimer.singleShot(1000, self.create_spare_pool)
return ans
def do_proceed(self, func, payload):
if callable(func):
func(payload)
def no_op(self, *args):
pass
def system_tray_icon_activated(self, r=False):
if r in (QSystemTrayIcon.Trigger, QSystemTrayIcon.MiddleClick, False):
if self.isVisible():
if self.isMinimized():
self.showNormal()
else:
self.hide_windows()
else:
self.show_windows()
if self.isMinimized():
self.showNormal()
@property
def is_minimized_to_tray(self):
return getattr(self, '__systray_minimized', False)
def ask_a_yes_no_question(self, title, msg, det_msg='',
show_copy_button=False, ans_when_user_unavailable=True,
skip_dialog_name=None, skipped_value=True):
if self.is_minimized_to_tray:
return ans_when_user_unavailable
return question_dialog(self, title, msg, det_msg=det_msg,
show_copy_button=show_copy_button,
skip_dialog_name=skip_dialog_name,
skip_dialog_skipped_value=skipped_value)
def update_toggle_to_tray_action(self, *args):
if hasattr(self, 'toggle_to_tray_action'):
self.toggle_to_tray_action.setText(
_('Hide main window') if self.isVisible() else _('Show main window'))
def hide_windows(self):
for window in QApplication.topLevelWidgets():
if isinstance(window, (MainWindow, QDialog)) and \
window.isVisible():
window.hide()
setattr(window, '__systray_minimized', True)
self.update_toggle_to_tray_action()
def show_windows(self, *args):
for window in QApplication.topLevelWidgets():
if getattr(window, '__systray_minimized', False):
window.show()
setattr(window, '__systray_minimized', False)
self.update_toggle_to_tray_action()
def test_server(self, *args):
if self.content_server is not None and \
self.content_server.exception is not None:
error_dialog(self, _('Failed to start Content server'),
unicode_type(self.content_server.exception)).exec_()
@property
def current_db(self):
return self.library_view.model().db
def refresh_all(self):
m = self.library_view.model()
m.db.data.refresh(clear_caches=False, do_search=False)
self.saved_searches_changed(recount=False)
m.resort()
m.research()
self.tags_view.recount()
def handle_cli_args(self, args):
if isinstance(args, string_or_bytes):
args = [args]
files = [os.path.abspath(p) for p in args if not os.path.isdir(p) and os.access(p, os.R_OK)]
if files:
self.iactions['Add Books'].add_filesystem_book(files)
def message_from_another_instance(self, msg):
if isinstance(msg, bytes):
msg = msg.decode('utf-8', 'replace')
if msg.startswith('launched:'):
import json
try:
argv = json.loads(msg[len('launched:'):])
except ValueError:
prints('Failed to decode message from other instance: %r' % msg)
if DEBUG:
error_dialog(self, 'Invalid message',
'Received an invalid message from other calibre instance.'
' Do you have multiple versions of calibre installed?',
det_msg='Invalid msg: %r' % msg, show=True)
argv = ()
if isinstance(argv, (list, tuple)) and len(argv) > 1:
self.handle_cli_args(argv[1:])
self.setWindowState(self.windowState() & ~Qt.WindowMinimized|Qt.WindowActive)
self.show_windows()
self.raise_()
self.activateWindow()
elif msg.startswith('shutdown:'):
self.quit(confirm_quit=False)
elif msg.startswith('bookedited:'):
parts = msg.split(':')[1:]
try:
book_id, fmt, library_id = parts[:3]
book_id = int(book_id)
m = self.library_view.model()
db = m.db.new_api
if m.db.library_id == library_id and db.has_id(book_id):
db.format_metadata(book_id, fmt, allow_cache=False, update_db=True)
db.update_last_modified((book_id,))
m.refresh_ids((book_id,))
except Exception:
import traceback
traceback.print_exc()
elif msg.startswith('web-store:'):
import json
try:
data = json.loads(msg[len('web-store:'):])
except ValueError:
prints('Failed to decode message from other instance: %r' % msg)
path = data['path']
if data['tags']:
before = self.current_db.new_api.all_book_ids()
self.iactions['Add Books'].add_filesystem_book([path], allow_device=False)
if data['tags']:
db = self.current_db.new_api
after = self.current_db.new_api.all_book_ids()
for book_id in after - before:
tags = list(db.field_for('tags', book_id))
tags += list(data['tags'])
self.current_db.new_api.set_field('tags', {book_id: tags})
else:
prints('Ignoring unknown message from other instance: %r' % msg[:20])
def current_view(self):
'''Convenience method that returns the currently visible view '''
idx = self.stack.currentIndex()
if idx == 0:
return self.library_view
if idx == 1:
return self.memory_view
if idx == 2:
return self.card_a_view
if idx == 3:
return self.card_b_view
def booklists(self):
return self.memory_view.model().db, self.card_a_view.model().db, self.card_b_view.model().db
def library_moved(self, newloc, copy_structure=False, allow_rebuild=False):
if newloc is None:
return
with self.library_broker:
default_prefs = None
try:
olddb = self.library_view.model().db
if copy_structure:
default_prefs = dict(olddb.prefs)
except:
olddb = None
if copy_structure and olddb is not None and default_prefs is not None:
default_prefs['field_metadata'] = olddb.new_api.field_metadata.all_metadata()
db = self.library_broker.prepare_for_gui_library_change(newloc)
if db is None:
try:
db = LibraryDatabase(newloc, default_prefs=default_prefs)
except apsw.Error:
if not allow_rebuild:
raise
import traceback
repair = question_dialog(self, _('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.')
% force_unicode(newloc, filesystem_encoding),
det_msg=traceback.format_exc()
)
if repair:
from calibre.gui2.dialogs.restore_library import (
repair_library_at
)
if repair_library_at(newloc, parent=self):
db = LibraryDatabase(newloc, default_prefs=default_prefs)
else:
return
else:
return
self.library_path = newloc
prefs['library_path'] = self.library_path
self.book_on_device(None, reset=True)
db.set_book_on_device_func(self.book_on_device)
self.library_view.set_database(db)
self.tags_view.set_database(db, self.alter_tb)
self.library_view.model().set_book_on_device_func(self.book_on_device)
self.status_bar.clear_message()
self.search.clear()
self.saved_search.clear()
self.book_details.reset_info()
# self.library_view.model().count_changed()
db = self.library_view.model().db
self.iactions['Choose Library'].count_changed(db.count())
self.set_window_title()
self.apply_named_search_restriction('') # reset restriction to null
self.saved_searches_changed(recount=False) # reload the search restrictions combo box
if db.new_api.pref('virtual_lib_on_startup'):
self.apply_virtual_library(db.new_api.pref('virtual_lib_on_startup'))
self.rebuild_vl_tabs()
for action in self.iactions.values():
action.library_changed(db)
self.library_broker.gui_library_changed(db, olddb)
if self.device_connected:
self.set_books_in_library(self.booklists(), reset=True)
self.refresh_ondevice()
self.memory_view.reset()
self.card_a_view.reset()
self.card_b_view.reset()
self.set_current_library_information(current_library_name(), db.library_id,
db.field_metadata)
self.library_view.set_current_row(0)
# Run a garbage collection now so that it does not freeze the
# interface later
gc.collect()
def set_window_title(self):
db = self.current_db
restrictions = [x for x in (db.data.get_base_restriction_name(),
db.data.get_search_restriction_name()) if x]
restrictions = ' :: '.join(restrictions)
font = QFont()
if restrictions:
restrictions = ' :: ' + restrictions
font.setBold(True)
font.setItalic(True)
self.virtual_library.setFont(font)
title = '{0} - || {1}{2} ||'.format(
__appname__, self.iactions['Choose Library'].library_name(), restrictions)
self.setWindowTitle(title)
def location_selected(self, location):
'''
Called when a location icon is clicked (e.g. Library)
'''
page = 0 if location == 'library' else 1 if location == 'main' else 2 if location == 'carda' else 3
self.stack.setCurrentIndex(page)
self.book_details.reset_info()
for x in ('tb', 'cb'):
splitter = getattr(self, x+'_splitter')
splitter.button.setEnabled(location == 'library')
for action in self.iactions.values():
action.location_selected(location)
if location == 'library':
self.virtual_library_menu.setEnabled(True)
self.highlight_only_button.setEnabled(True)
self.vl_tabs.setEnabled(True)
else:
self.virtual_library_menu.setEnabled(False)
self.highlight_only_button.setEnabled(False)
self.vl_tabs.setEnabled(False)
# Reset the view in case something changed while it was invisible
self.current_view().reset()
self.set_number_of_books_shown()
self.update_status_bar()
def job_exception(self, job, dialog_title=_('Conversion error'), retry_func=None):
if not hasattr(self, '_modeless_dialogs'):
self._modeless_dialogs = []
minz = self.is_minimized_to_tray
if self.isVisible():
for x in list(self._modeless_dialogs):
if not x.isVisible():
self._modeless_dialogs.remove(x)
try:
if 'calibre.ebooks.DRMError' in job.details:
if not minz:
from calibre.gui2.dialogs.drm_error import DRMErrorMessage
d = DRMErrorMessage(self, _('Cannot convert') + ' ' +
job.description.split(':')[-1].partition('(')[-1][:-1])
d.setModal(False)
d.show()
self._modeless_dialogs.append(d)
return
if 'calibre.ebooks.oeb.transforms.split.SplitError' in job.details:
title = job.description.split(':')[-1].partition('(')[-1][:-1]
msg = _('<p><b>Failed to convert: %s')%title
msg += '<p>'+_('''
Many older e-book reader devices are incapable of displaying
EPUB files that have internal components over a certain size.
Therefore, when converting to EPUB, calibre automatically tries
to split up the EPUB into smaller sized pieces. For some
files that are large undifferentiated blocks of text, this
splitting fails.
<p>You can <b>work around the problem</b> by either increasing the
maximum split size under <i>EPUB output</i> in the conversion dialog,
or by turning on Heuristic Processing, also in the conversion
dialog. Note that if you make the maximum split size too large,
your e-book reader may have trouble with the EPUB.
''')
if not minz:
d = error_dialog(self, _('Conversion Failed'), msg,
det_msg=job.details)
d.setModal(False)
d.show()
self._modeless_dialogs.append(d)
return
if 'calibre.ebooks.mobi.reader.mobi6.KFXError:' in job.details:
if not minz:
title = job.description.split(':')[-1].partition('(')[-1][:-1]
msg = _('<p><b>Failed to convert: %s') % title
idx = job.details.index('calibre.ebooks.mobi.reader.mobi6.KFXError:')
msg += '<p>' + re.sub(r'(https:\S+)', r'<a href="\1">{}</a>'.format(_('here')),
job.details[idx:].partition(':')[2].strip())
d = error_dialog(self, _('Conversion failed'), msg, det_msg=job.details)
d.setModal(False)
d.show()
self._modeless_dialogs.append(d)
return
if 'calibre.web.feeds.input.RecipeDisabled' in job.details:
if not minz:
msg = job.details
msg = msg[msg.find('calibre.web.feeds.input.RecipeDisabled:'):]
msg = msg.partition(':')[-1]
d = error_dialog(self, _('Recipe Disabled'),
'<p>%s</p>'%msg)
d.setModal(False)
d.show()
self._modeless_dialogs.append(d)
return
if 'calibre.ebooks.conversion.ConversionUserFeedBack:' in job.details:
if not minz:
import json
payload = job.details.rpartition(
'calibre.ebooks.conversion.ConversionUserFeedBack:')[-1]
payload = json.loads('{' + payload.partition('{')[-1])
d = {'info':info_dialog, 'warn':warning_dialog,
'error':error_dialog}.get(payload['level'],
error_dialog)
d = d(self, payload['title'],
'<p>%s</p>'%payload['msg'],
det_msg=payload['det_msg'])
d.setModal(False)
d.show()
self._modeless_dialogs.append(d)
return
except:
pass
if job.killed:
return
try:
prints(job.details, file=sys.stderr)
except:
pass
if not minz:
self.job_error_dialog.show_error(dialog_title,
_('<b>Failed</b>')+': '+unicode_type(job.description),
det_msg=job.details, retry_func=retry_func)
def read_settings(self):
geometry = config['main_window_geometry']
if geometry is not None:
QApplication.instance().safe_restore_geometry(self, geometry)
self.read_layout_settings()
def write_settings(self):
with gprefs: # Only write to gprefs once
config.set('main_window_geometry', self.saveGeometry())
dynamic.set('sort_history', self.library_view.model().sort_history)
self.save_layout_state()
self.stack.tb_widget.save_state()
def quit(self, checked=True, restart=False, debug_on_restart=False,
confirm_quit=True):
if self.shutting_down:
return
if confirm_quit and not self.confirm_quit():
return
try:
self.shutdown()
except:
import traceback
traceback.print_exc()
self.restart_after_quit = restart
self.debug_on_restart = debug_on_restart
if self.system_tray_icon is not None and self.restart_after_quit:
# Needed on windows to prevent multiple systray icons
self.system_tray_icon.setVisible(False)
QApplication.instance().quit()
def donate(self, *args):
from calibre.utils.localization import localize_website_link
open_url(QUrl(localize_website_link('https://calibre-ebook.com/donate')))
def confirm_quit(self):
if self.job_manager.has_jobs():
msg = _('There are active jobs. Are you sure you want to quit?')
if self.job_manager.has_device_jobs():
msg = '<p>'+__appname__ + \
_(''' is communicating with the device!<br>
Quitting may cause corruption on the device.<br>
Are you sure you want to quit?''')+'</p>'
if not question_dialog(self, _('Active jobs'), msg):
return False
if self.proceed_question.questions:
msg = _('There are library updates waiting. Are you sure you want to quit?')
if not question_dialog(self, _('Library updates waiting'), msg):
return False
from calibre.db.delete_service import has_jobs
if has_jobs():
msg = _('Some deleted books are still being moved to the Recycle '
'Bin, if you quit now, they will be left behind. Are you '
'sure you want to quit?')
if not question_dialog(self, _('Active jobs'), msg):
return False
return True
def shutdown(self, write_settings=True):
self.shutting_down = True
self.show_shutdown_message()
self.server_change_notification_timer.stop()
from calibre.customize.ui import has_library_closed_plugins
if has_library_closed_plugins():
self.show_shutdown_message(
_('Running database shutdown plugins. This could take a few seconds...'))
self.grid_view.shutdown()
db = None
try:
db = self.library_view.model().db
cf = db.clean
except:
pass
else:
cf()
# Save the current field_metadata for applications like calibre2opds
# Goes here, because if cf is valid, db is valid.
db.new_api.set_pref('field_metadata', db.field_metadata.all_metadata())
db.commit_dirty_cache()
db.prefs.write_serialized(prefs['library_path'])
for action in self.iactions.values():
action.shutting_down()
if write_settings:
self.write_settings()
if getattr(self, 'update_checker', None):
self.update_checker.shutdown()
self.listener.close()
self.job_manager.server.close()
self.job_manager.threaded_server.close()
self.device_manager.keep_going = False
self.auto_adder.stop()
# Do not report any errors that happen after the shutdown
# We cannot restore the original excepthook as that causes PyQt to
# call abort() on unhandled exceptions
import traceback
def eh(t, v, tb):
try:
traceback.print_exception(t, v, tb, file=sys.stderr)
except:
pass
sys.excepthook = eh
mb = self.library_view.model().metadata_backup
if mb is not None:
mb.stop()
self.library_view.model().close()
try:
try:
if self.content_server is not None:
# If the Content server has any sockets being closed then
# this can take quite a long time (minutes). Tell the user that it is
# happening.
self.show_shutdown_message(
_('Shutting down the Content server. This could take a while...'))
s = self.content_server
self.content_server = None
s.exit()
except:
pass
except KeyboardInterrupt:
pass
self.hide_windows()
if self._spare_pool is not None:
self._spare_pool.shutdown()
from calibre.db.delete_service import shutdown
shutdown()
time.sleep(2)
self.istores.join()
return True
def run_wizard(self, *args):
if self.confirm_quit():
self.run_wizard_b4_shutdown = True
self.restart_after_quit = True
try:
self.shutdown(write_settings=False)
except:
pass
QApplication.instance().quit()
def closeEvent(self, e):
if self.shutting_down:
return
self.write_settings()
if self.system_tray_icon is not None and self.system_tray_icon.isVisible():
if not dynamic['systray_msg'] and not ismacos:
info_dialog(self, 'calibre', 'calibre '+
_('will keep running in the system tray. To close it, '
'choose <b>Quit</b> in the context menu of the '
'system tray.'), show_copy_button=False).exec_()
dynamic['systray_msg'] = True
self.hide_windows()
e.ignore()
else:
if self.confirm_quit():
try:
self.shutdown(write_settings=False)
except:
import traceback
traceback.print_exc()
e.accept()
else:
e.ignore()